JP5660505B2 - Radiation measurement apparatus, management system using the same, and multi-item monitoring system - Google Patents

Description

  The present invention relates to a radiation measuring apparatus, a management system using the same, and a multi-item monitoring system.

Conventionally, workers at nuclear power plants and workers for various inspections using radiation have been equipped with radiation measuring devices in order to manage the exposure dose for each individual. In recent years, exposure management of neighboring residents such as nuclear power plants is also regarded as important, and the number of neighboring residents equipped with radiation measuring devices is increasing.
For example, a proportional counter, a GM counter, a semiconductor detector, and a scintillation detector are used as a radiation measurement device that manages the exposure dose of an individual.

Such a radiation measurement device pulses light, charge, etc. emitted when incident radiation causes ionization or excitation of a substance, or when light emission or chemical reaction occurs due to interaction with radiation. It is converted into an electrical signal such as a number or an integral value of current. Then, this electric signal is counted and converted into a radiation dose (hereinafter referred to as “dose”) (for example, see Patent Document 1).
In order to accurately convert an electric signal into a dose, it is necessary to obtain in advance a conversion coefficient for converting the electric signal into a dose and a correction coefficient for correcting variations in the apparatus. In general, radioactive materials are used for such calibration work.

  By the way, it is known that the influence of radiation on the human body may accumulate in the human body every time exposure occurs. For this reason, the cumulative value of radiation that each individual is exposed to while alive (hereinafter referred to as “cumulative dose”), or the cumulative dose for each individual over a long period of time, must be less than or equal to a predetermined upper limit. ing. Therefore, for example, Patent Document 2 describes a portable personal dosimeter having a function of integrating dose measurement values.

JP 2010-151615 A JP 2011-099792 A

However, the degree of influence of radiation varies depending on age, sex, presence of pregnancy, and the like. For example, the lower the age, the more susceptible to radiation.
For this reason, if a high dose is detected or if the cumulative exposure level is high, the radiation measurement value, cumulative exposure level, and physical status of each individual (eg, age, gender, pregnancy status) It is necessary to judge comprehensively and select an action to be taken. It is difficult for individuals without specialized knowledge to select appropriate actions based on this information.

  In addition, the cumulative exposure dose does not increase even if it increases over time or maintains a constant value. For this reason, when the cumulative exposure amount reaches the above-described upper limit, the situation becomes serious, and it may be too late to take some countermeasures.

  Furthermore, when each individual is equipped with a radiation measurement device, the power supply of the radiation measurement device may be temporarily turned off due to insufficient power. In such a case, a period during which radiation cannot be measured occurs, and the cumulative exposure dose cannot be calculated appropriately.

Furthermore, for example, the radiation measuring apparatus described in Patent Document 1 is complicated in structure, takes time to operate, and is expensive to manufacture. In addition, such a radiation measurement apparatus needs to periodically calibrate the conversion coefficient and correction coefficient described above using a radioactive substance. Since it is dangerous for individuals without specialized knowledge to handle radioactive materials, it is difficult to perform such calibration work by individuals.
For this reason, it is difficult for residents in the vicinity such as a nuclear power plant to purchase a radiation measuring apparatus as described in Patent Document 1, appropriately operate, and perform maintenance management.

  The present invention has been made in order to solve the above-described problems of the prior art, and a radiation measuring apparatus capable of appropriately detecting the radiation dose and appropriately managing the radiation dose, and the same are used. It is an object to provide a management system and a multi-item monitoring system.

A first aspect of the present invention is a portable radiation measurement device, which measures a radiation dose measurement value at regular intervals based on measurement means for measuring a radiation dose and time-series data of the radiation dose measurement value. Create a data table that calculates the accumulated time accumulated exposure dose and shows the correspondence between the time information related to the measurement of radiation dose and the time accumulated exposure dose. If the time series data is missing, An estimation means for estimating the time cumulative exposure dose including the data table, and a cumulative value obtained by accumulating the measurement values of the radiation dose in the past period using the time cumulative exposure dose estimated through the estimation means. And a calculating means for calculating the exposure dose.
More specifically, it is a portable radiation measurement device that includes a measurement means for measuring the radiation dose of the user wearing the radiation measurement device or the surrounding environment of the user, and time-series data of the measurement values of the radiation dose. Based on the above, the time accumulated exposure dose obtained by accumulating the measurement value of the radiation dose at regular intervals is calculated, and a data table indicating the correspondence between the time information related to the measurement of the radiation dose and the time accumulated exposure dose is created. When there is a missing measurement in the series data, the estimation unit that estimates the time accumulated exposure amount including the missing measurement by referring to the data table, and the time accumulated exposure amount estimated through the estimation unit are used. And a calculation means for calculating a cumulative exposure dose obtained by accumulating the measurement values of the radiation dose in the past period.

  In general, users often act according to a certain pattern according to the day of the week, time of day, etc., so the measured value of radiation dose and the time cumulative exposure amount depend on the day of the week, time of day, etc. Often changes in a certain pattern. According to the same configuration, when there is a missing measurement in the time cumulative exposure dose, the time cumulative exposure dose including the missing measurement is estimated by referring to the data table indicating the correspondence relationship between the time cumulative exposure dose and the time information. In addition, it is possible to appropriately estimate the time accumulated exposure dose including missing measurement along the user's behavior pattern. Therefore, even when the measurement value is missing due to, for example, the radiation measurement apparatus being turned off, the cumulative exposure dose can be calculated appropriately.

The time information includes the date, day of the week, and time zone when the radiation dose was measured.
In addition, if the calculation means estimates the time accumulated exposure dose including missing data when there is missing data, the missing data is generated from the data table created based on the time series data of the past radiation dose measurements. The time cumulative exposure dose corresponding to the time information may be extracted, and the time cumulative exposure dose may be estimated as the time cumulative exposure dose including the missing measurement.

  According to a second aspect of the present invention, there is provided the radiation measurement apparatus according to the first aspect, wherein the cumulative value of the measurement value of the radiation dose after a predetermined time has elapsed is predicted as an estimated cumulative exposure dose with reference to the data table. Means and a display means for displaying the estimated cumulative exposure based on an output from the prediction means, the display means being capable of classifying and displaying the estimated cumulative exposure in a plurality of grades. Features.

According to this configuration, since the estimated cumulative exposure dose is displayed, the user can act while predicting how the cumulative exposure dose will change. For this reason, it is possible to prevent the cumulative exposure amount from reaching the upper limit value and causing a serious situation. In addition, when the estimated cumulative exposure is predicted, the data table indicating the correspondence between the time information and the time cumulative exposure is referred to, so the estimated cumulative exposure is appropriately predicted according to the user's behavior pattern. be able to.
When an individual without expertise is provided with information on radiation dose measurements and cumulative exposure, understand what these values mean and use scientific knowledge to properly understand the exposure situation. It is difficult to understand. In this respect, according to the same configuration, the estimated accumulated exposure dose is classified into a plurality of grades and displayed, so that the user can intuitively understand the meaning of the provided numerical value and the exposure state.
Note that the estimated cumulative exposure dose may be a cumulative value of measured values after a predetermined time has elapsed from the time of measurement.

A third aspect of the present invention is an exposure comprising a portable radiation measurement device and a central monitoring device that outputs a command selected based on information output from the radiation measurement device to the radiation measurement device. In the management system, the radiation measurement device and the central monitoring device each include a wireless communication unit and can perform wireless communication with each other. The radiation measurement device includes a measurement unit that measures a radiation dose, and a user. Storage means for storing user information comprising at least one of age, sex and presence / absence of pregnancy; setting means for setting a first predetermined value based on the user information; A determination means for determining whether or not a predetermined value is greater than or equal to a radiation value greater than or equal to the first predetermined value when the measured radiation dose is determined to be less than the first predetermined value through the determination means; An anticipation determining means for determining whether or not an amount is expected to be measured, and when it is determined through the determining means that the measured value of the radiation dose is not less than the first predetermined value, or the first When it is determined through the anticipation determining means that a radiation dose of one predetermined value or more is expected to be measured, a first wireless signal requesting a command including the user information and the measurement value of the radiation dose is provided. Transmitting to the central monitoring apparatus, the central monitoring apparatus transmits a command set based on information included in the first radio signal to the radiation measuring apparatus.
More specifically, in an exposure management system including a portable radiation measurement device and a central monitoring device that outputs a command selected based on information output from the radiation measurement device to the radiation measurement device. The radiation measurement device and the central monitoring device each include a wireless communication unit and can perform wireless communication with each other, and the radiation measurement device is a user wearing the radiation measurement device or a surrounding area of the user Measuring means for measuring the radiation dose of the environment, storage means for storing user information consisting of at least one of the user's age, sex and presence / absence of pregnancy, and a first predetermined value is set based on the user information A setting unit; a determination unit that determines whether or not a measured value of the radiation dose is equal to or greater than the first predetermined value; and a measured value of the radiation dose that has not reached the first predetermined value through the determination unit. Prediction determination means for determining whether or not a radiation dose greater than or equal to the first predetermined value is expected to be measured when it is determined that the measured value of the radiation dose is the first predetermined value. When it is determined through the determination means that it is above, or when it is determined through the prediction determination means that a radiation dose greater than the first predetermined value is expected, the user information and radiation A first wireless signal that requests a command including a measured value of the amount, and transmits the command set based on information included in the first wireless signal to the central monitoring device. It transmits to a radiation measuring device, It is characterized by the above-mentioned.

  According to this configuration, when a radiation dose greater than or equal to the first predetermined value is measured, and when the radiation dose measurement value is expected to rise and become greater than or equal to the first predetermined value, a command is requested to the central monitoring device. The first radio signal to be transmitted is transmitted. Thus, even if the measured value of the radiation dose is less than the first predetermined value, if the radiation dose greater than the first predetermined value is expected to be measured, the central monitoring device is instructed. Therefore, it is possible to prevent the user from being exposed to radiation of a first predetermined value or more.

  A fourth aspect of the present invention is the exposure management system according to the third aspect, wherein when the central monitoring device receives the one radio signal, a standby time set according to the user information and the measured value is set. Transmitting to the radiation measuring device, and receiving the waiting time, the radiation measuring device prohibits wireless communication with the central monitoring device until the waiting time elapses. .

  Since wireless communication consumes a large amount of power, when the amount of charge of the radiation measurement apparatus is small, the power of the radiation measurement apparatus may be turned off by performing wireless communication. When the power is turned off, the radiation dose cannot be measured. In this regard, according to the same configuration, when the standby time is received, wireless communication with the central monitoring device is prohibited until the standby time elapses, so that power is consumed by the wireless communication. This can be suppressed.

A fifth aspect of the present invention is an exposure comprising a portable radiation measurement device and a central monitoring device that outputs a command selected based on information output from the radiation measurement device to the radiation measurement device. In the management system, the radiation measurement device and the central monitoring device each include a wireless communication unit and can perform wireless communication with each other. The radiation measurement device includes a measurement unit that measures a radiation dose, and a user. Storage means for storing user information consisting of at least one of age, sex and presence / absence of pregnancy, calculation means for calculating a cumulative exposure dose by accumulating radiation dose measurements in the past period, and the user information Setting means for setting a second predetermined value on the basis thereof, and when the cumulative exposure dose is equal to or greater than the second predetermined value, a command including the user information and the cumulative exposure dose is requested. A second wireless signal is transmitted to the central monitoring device, and the central monitoring device transmits a command set based on information included in the second wireless signal to the radiation measuring device. .
More specifically, in an exposure management system including a portable radiation measurement device and a central monitoring device that outputs a command selected based on information output from the radiation measurement device to the radiation measurement device. The radiation measurement device and the central monitoring device each include a wireless communication unit and can perform wireless communication with each other, and the radiation measurement device is a user wearing the radiation measurement device or a surrounding area of the user Measurement means for measuring the radiation dose of the environment, storage means for storing user information consisting of at least one of the user's age, gender and pregnancy status, and cumulative exposure that accumulates measurements of radiation dose in the past period A calculating means for calculating an amount; and a setting means for setting a second predetermined value based on the user information, and when the cumulative exposure amount is not less than the second predetermined value, A second wireless signal requesting a command including the user information and the cumulative exposure dose is transmitted to the central monitoring device, and the central monitoring device is based on information included in the second wireless signal. The set command is transmitted to the radiation measuring apparatus.

  According to this configuration, when the cumulative exposure amount exceeds the second predetermined value, the central monitoring device issues a command based on at least one piece of information on the user's age, sex, and the presence of pregnancy and the cumulative exposure amount. Can be selected and transmitted to the radiation measurement device. Therefore, the user can select an action to be taken based on a command output from the central monitoring device without determining how to act for each individual.

  In addition, when transmitting the second radio signal from the radiation measuring apparatus to the central monitoring apparatus, user information including at least one of the age, sex and presence / absence of pregnancy is transmitted together with the measurement value of the radiation dose. Therefore, an appropriate command can be set and transmitted to the user without managing or searching for information about the user with the central monitoring device. Therefore, it is possible to suppress the processing from being stagnated by the central monitoring device.

The cumulative exposure dose may be a value obtained by accumulating the measurement value, or calculating the time cumulative exposure dose obtained by accumulating the measurement value of the radiation dose at regular intervals, and time information on the time when the radiation dose is measured and the radiation dose. A data table indicating the correspondence relationship between the measured values may be created and calculated based on this data table.
Further, the radiation measuring apparatus may display a predetermined warning determined according to the user information and the cumulative exposure dose.

  A sixth aspect of the present invention is the exposure management system according to the fifth aspect, wherein the radiation measurement apparatus includes a prediction unit that predicts the cumulative exposure dose after a predetermined time has elapsed as an estimated cumulative exposure dose, and the setting The means sets a third predetermined value based on the user information, and when the estimated cumulative exposure dose is equal to or greater than a third predetermined value, the user information and the estimated cumulative exposure dose of the radiation dose are obtained. A third wireless signal for requesting an inclusive command is transmitted to the central monitoring device, and the central monitoring device transmits a command set based on information included in the third wireless signal to the radiation measuring device. And

According to this configuration, since the third radio signal is transmitted to the central monitoring device based on the estimated cumulative exposure dose, the transition of the cumulative exposure dose is predicted and the third radio signal is transmitted to the central monitoring device. The command from the central monitoring device can be received. For this reason, even if the cumulative exposure dose does not reach the upper limit value, if there is a possibility that the cumulative exposure dose will reach the upper limit value, it can be transmitted to the central monitoring device and a predetermined instruction can be requested.
Note that the estimated cumulative exposure dose can be calculated based on a data table that shows the correspondence between the time information related to the time when the radiation dose is measured and the time cumulative exposure dose.

  An exposure management system comprising a portable radiation measurement device and a central monitoring device that outputs a command selected based on information output from the radiation measurement device to the radiation measurement device, The radiation measurement device and the central monitoring device each include a wireless communication unit and can wirelessly communicate with each other. The radiation measurement device includes a measurement unit that measures a radiation dose, a user's age, sex, and pregnancy. Storage means for storing user information consisting of at least one of the presence or absence, a calculation means for calculating a cumulative exposure dose by accumulating the measurement values of radiation dose in the past period, and a third predetermined value based on the user information And setting means for predicting the cumulative exposure dose after a lapse of a predetermined period as an estimated cumulative exposure dose, wherein the estimated cumulative exposure dose is not less than the third predetermined value. And transmitting the third radio signal requesting a command including the user information and the estimated cumulative exposure dose to the central monitoring device, the central monitoring device included in the third radio signal A command set based on the information to be transmitted may be transmitted to the radiation measuring apparatus.

  A seventh aspect of the present invention is the exposure management system according to the fifth aspect or the sixth aspect, wherein the central monitoring device receives the second radio signal or the third radio signal, and receives the user information and the third radio signal. The standby time set according to the measured value is transmitted to the radiation measuring apparatus. When the radiation measuring apparatus receives the standby time, it performs wireless communication with the central monitoring apparatus until the standby time elapses. It is forbidden to perform.

  Since wireless communication consumes a large amount of power, when the amount of charge of the radiation measurement apparatus is small, the power of the radiation measurement apparatus may be turned off by performing wireless communication. When the power is turned off, the radiation dose cannot be measured. In this regard, according to the same configuration, when the standby time is received, wireless communication with the central monitoring device is prohibited until the standby time elapses, so that power is consumed by the wireless communication. This can be suppressed.

  An eighth aspect of the present invention is the exposure management system according to any one of the third aspect to the seventh aspect, wherein the central monitoring device is a radiation dose measurement value transmitted from the radiation measurement device and the cumulative exposure. An exposure management system characterized in that at least one of a dose and the estimated accumulated exposure dose can be displayed on a map together with a current position of the radiation measuring apparatus.

According to this configuration, it is possible to visually represent how much radiation dose has been measured in each region. Moreover, since not only the radiation dose measurement value but also each user information can be displayed together, it is possible to take detailed measures according to the situation of each region.
The information processing apparatus may further include an information terminal capable of communicating with the radiation measurement apparatus through short-range wireless communication and capable of communicating with a contact organization, and the transmission process may be executed via the information terminal. .

A ninth aspect of the present invention is a radiation management system comprising a portable radiation measurement device and a portable simple radiation detector configured independently of the radiation measurement device, the radiation measurement device and The simple radiation detector includes a short-range wireless communication unit and can perform short-range wireless communication with each other. The simple radiation detector includes a detection unit for detecting radiation and a signal output from the detection unit. And when the counting result output from the counting unit is equal to or greater than a predetermined threshold, the radiation measuring apparatus is notified via the short-range wireless communication unit. To do.
More specifically, the radiation management system includes a portable radiation measurement device and a portable radiation detector that is configured independently of the radiation measurement device, and includes the radiation measurement device and the simplified radiation. Each of the detectors has a short-range wireless communication unit and can perform short-range wireless communication with each other. The simple radiation detector detects radiation in a user wearing the radiation measurement device or in the surrounding environment of the user. And a counter that counts a signal output from the detector, and when the counting result output from the counter is equal to or greater than a predetermined threshold, the short-range wireless communication unit is And reporting to the radiation measurement apparatus.

  According to this configuration, since the radiation measuring apparatus is notified based on the signal output from the counting unit, it is not necessary to convert the signal output from the counting unit into a radiation dose. For this reason, it is not necessary to obtain a conversion coefficient for converting an electric signal into a radiation dose, obtain a correction coefficient for correcting variations in the apparatus, and regularly check these coefficients. For this reason, radiation can be detected with a simple configuration.

  According to a tenth aspect of the present invention, in the radiation management system according to the ninth aspect, the radiation measurement device includes a detection unit that detects radiation, a counting unit that counts a signal output from the detection unit, and the counting unit. A measurement unit configured to store a conversion constant for converting the counting result output from the measurement unit into a measurement value and calculate a measurement value of the radiation dose based on the output from the counting unit It is characterized by that.

  According to this configuration, when the radiation is detected using the simple radiation detector, the radiation dose can be accurately measured using the radiation measuring apparatus. Note that the conversion constant includes a conversion coefficient for converting an electrical signal into a radiation dose and a correction coefficient for correcting variations in the apparatus.

An eleventh aspect of the present invention is a multi-item monitoring system capable of monitoring at least one of heart failure or respiratory failure and radiation dose, and monitoring a blood oxygen saturation level of a user at a predetermined interval And detecting that the blood oxygen saturation is below a predetermined threshold based on the output from the monitoring unit, the user's blood oxygen saturation, body temperature, pulse rate, blood pressure, respiratory rate And measurement of radiation dose, and when any one of blood oxygen saturation, body temperature, pulse rate, blood pressure, respiratory rate, and radiation dose is not in a predetermined region, an abnormality determination process is executed. A portable monitoring device including a determination unit and a current position acquisition unit for acquiring a current position, and capable of communicating with the portable monitoring device by short-range wireless communication, and a contact organization An information terminal capable of communicating, and when the abnormality determination process is executed, the information terminal has a blood oxygen concentration, a body temperature, a pulse rate, a blood pressure, a respiratory rate, a radiation dose, and a user dose of the user. The current position is transmitted to the contact organization, and the determination unit is expected to measure the radiation dose outside the region even when the radiation dose is in the predetermined region. It is characterized by comprising anticipation determination means for determining whether or not.
More specifically, a multi-item monitoring system capable of monitoring at least one of heart failure or respiratory failure and radiation dose, the monitoring unit monitoring a user's blood oxygen saturation at predetermined intervals, and the monitoring The blood oxygen saturation, body temperature, pulse rate, blood pressure, respiratory rate, and radiation dose of the user is detected when the blood oxygen saturation is detected to be below a predetermined threshold based on the output from the unit. When starting measurement, when any one of these blood oxygen saturation, body temperature, pulse rate, blood pressure, respiratory rate, and radiation dose is not in a predetermined region, a determination unit that executes an abnormality determination process, A portable monitoring device that includes a current position acquisition unit that acquires a current position, and can communicate with the portable monitoring device by short-range wireless communication and can communicate with a contact organization. The information terminal, when the abnormality determination process is executed, the user's blood oxygen concentration, body temperature, pulse rate, blood pressure, respiratory rate, radiation dose, and the current position of the user Whether the radiation dose outside the area is expected to be measured even when the radiation dose is in the predetermined area. The portable monitoring apparatus is characterized by measuring radiation of a user wearing the portable monitoring apparatus or a surrounding environment of the user.

  According to the present invention, it is possible to provide a radiation measuring apparatus capable of appropriately detecting a radiation dose and appropriately managing the radiation dose, a management system using the radiation measuring apparatus, and a multi-item monitoring system.

(A) is a top view which shows the plane structure of the radiation measuring device concerning 1st embodiment of this invention, (b) is a bottom view which shows the bottom face structure of the radiation measuring device concerning the embodiment. The block diagram which shows the structure of the radiation measuring device concerning the embodiment. (A) is a graph which shows an example of the time series data of the measured value of the dose concerning the embodiment, (b) shows the correspondence between the time accumulated exposure dose and the measured day of the week and time according to the embodiment. table. (A) And (b) is a table which shows the correspondence of the time accumulation exposure amount concerning the embodiment, and the measured day of the week and time. An example of the grade table concerning the embodiment. The block diagram which shows the structure of the radiation measuring device, central monitoring apparatus, and exposure management system concerning 2nd embodiment of this invention. The flowchart explaining the flow of the process concerning the embodiment. (A) And (b) is a graph which shows an example of transition of the measured value of a dose. 6 is a flowchart for explaining a flow of information acquisition processing according to the embodiment. The timing chart which shows an example of transition of the measured value of the dose concerning the embodiment. The flowchart explaining the flow of the process concerning 3rd embodiment of this invention. The timing chart explaining an example of transition of the accumulation exposure dose concerning the same embodiment, and an estimation accumulation exposure dose. (A) is a top view which shows the plane structure of the radiation measuring device concerning 4th embodiment of this invention, and a bottom view which shows the bottom face structure of the radiation measuring device, (b) is simple radiation detection concerning the embodiment. The top view which shows the plane structure of a detector, and the bottom view which shows the bottom face structure of the same simple radiation detector. The block diagram which shows the structure of the radiation measuring device concerning the same embodiment, and a simple radiation detector. Schematic which shows an example of the exposure management system concerning other embodiment. Schematic which shows an example of the data list and map concerning other embodiment. The block diagram which shows the structure of the radiation measuring device, central monitoring apparatus, and exposure management system concerning other embodiment.

(First embodiment)
Hereinafter, a first embodiment embodying the present invention will be described with reference to FIGS.
The radiation measuring apparatus 10 measures a radiation dose (hereinafter referred to as “dose”), and based on this measurement value, a value obtained by accumulating the measured dose values up to the present (during measurement) (hereinafter referred to as “cumulative exposure dose”). And the cumulative exposure dose at the time when one year has elapsed from the time of measurement is estimated and displayed on the display unit 12 (corresponding to “display means” of the present invention).
First, a schematic configuration of the radiation measuring apparatus 10 according to the present embodiment will be described with reference to FIGS. 1 and 2.

As shown in FIG. 1, the radiation measuring apparatus 10 includes an apparatus main body 11 and a band 14 and is formed in a shape simulating a wristwatch. The user can carry the apparatus main body 11 on the body by winding the band 14 around the wrist.
On the upper surface of the apparatus main body 11 of the radiation measuring apparatus 10, a display unit 12 made of liquid crystal and displaying a measured value of a dose, and an alarm unit 15 for outputting various alarms are provided. The alarm unit 15 emits light whose color changes according to the output alarm. For example, blue light is output when the first alarm is output, green light is output when the second alarm is output, yellow light is output when the third alarm is output, and a fourth alarm is output. Emits red light.
In addition, an operation unit 13 including switches 13 a to 13 c for performing mode switching, time operation, and the like is provided around the apparatus main body 11.

  A buzzer 16 is built in the bottom surface of the apparatus main body 11. An alarm sound is output from the buzzer 16. The buzzer 16 emits a different sound depending on the alarm output to the alarm unit 15.

FIG. 2 is a block diagram showing the configuration of the apparatus main body 11 shown in FIG.
As shown in FIG. 2, the apparatus main body 11 includes a measuring unit 21 that measures a dose (corresponding to “measuring means” of the present invention), a control unit 23 that executes various calculations, an alarm unit 15, and the like. ing.

The measurement unit 21 includes a radiation detection unit 31 that detects radiation, a signal amplification unit and a pulse height discrimination unit (not shown), a counting unit 32 that counts processed signals, and a pulse signal output from the counting unit 32 And a calculation unit 33 that performs a calculation related to.
The radiation detection unit 31 is a semiconductor element sensitive to radiation. For example, when γ rays enter the radiation detection unit 31, a signal having a peak value corresponding to the energy of the incident γ rays is output to the counting unit 32. As the radiation detection unit 31, a semiconductor element such as silicon or cadmium telluride may be used, or a combination of a scintillator and a photomultiplier tube may be used.

As described above, the counting unit 32 includes a signal amplifying unit and a wave height discriminating unit. After the signal output from the radiation detection unit 31 is amplified by the signal amplification unit, only the signal having a certain peak value is discriminated by the pulse height discrimination unit and output as a corresponding pulse signal.
The calculation unit 33 stores a conversion coefficient for converting an electrical signal into a dose, and a correction coefficient for correcting variation in the apparatus. Then, the pulse signal output from the counting unit 32 is counted and converted to a value (in this embodiment, “μSV / h”) expressed in a unit such as a 1 cm dose equivalent (rate), for example. This value is integrated every minute and output to the shared memory 22.
The shared memory 22 temporarily stores the output value from the measurement unit 21 and outputs it to the control unit 23.

The control unit 23 stores the output value from the measurement unit 21 and the date and time (day of the week, date and time) when the measurement was performed (corresponding to the “storage unit” of the present invention), and calculation for performing various calculations. Unit 35 (corresponding to “estimating means”, “calculating means”, and “predicting means” of the present invention), and performs various processes in an integrated manner.
The control unit 23 performs display control of the display unit 12 and the alarm unit 15 and control of an alarm sound of the buzzer 16 and performs predetermined processing according to the operation signal input from the operation unit 13. For example, when the switch 13a is pressed, the mode shifts to an input mode in which the user can input the age and the like. When the switch 13b is pressed, the measured dose value and each value calculated based on the measured dose value are displayed. When the switch 13c is pressed, the calculated values are cleared.

The storage unit 34 includes a RAM, a ROM (not shown), and the like. Based on the measured dose value output from the measurement unit 21, the user's age, sex, and presence / absence of pregnancy input in advance by the user. An area for storing user information is provided.
The calculation unit 35 is configured by a CPU or the like that executes various processes, and is based on various pieces of information stored in the storage unit 34 and the measured values of doses measured by the measurement unit 21. Calculate cumulative exposure and cumulative exposure.

  Here, the cumulative exposure dose is a value obtained by accumulating the measurement values of the dose up to the present (during measurement) as described above. The reference cumulative exposure is a value obtained by estimating the cumulative exposure at the time when one year has elapsed from the time of measurement based on the current measured value, and is calculated by multiplying the measured dose by 24 × 365. It is a value obtained by adding the cumulative exposure to the obtained value. The estimated cumulative exposure is a value obtained by predicting the cumulative exposure at the time when one year has elapsed from the time of measurement based on time-series data of measured values.

Next, a method for calculating the cumulative exposure dose and the estimated cumulative exposure dose will be described in detail.
As described above, the measurement unit 21 outputs the measured dose value to the control unit 23 through the shared memory 22. As illustrated in FIG. 3A, the storage unit 34 sequentially stores time-series data of measurement values including the date and day of week when the dose is measured, and the measurement value of the dose. If a missing measurement occurs or an abnormal value is included, as shown in FIG. 3 (a), only the date and day of the week are stored, and the measured value is a missing measurement (in FIG. 3 (a), An example of missing data occurred on Tuesday, January 3, 2012, from 0:30 to 1:59).

  Based on the output from the storage unit 34, the calculation unit 35 integrates the measured values of the dose up to the present time (at the time of measurement) every hour as shown in FIG. Equivalent to “cumulative exposure dose”), a data table in which the time cumulative exposure dose at each time is arranged for each day of the week is created.

Further, the calculation unit 35 updates the data table every time the time cumulative exposure dose is calculated.
For example, as shown in FIG. 4A, the time accumulated exposure amount of Monday from 0:00 to 1:00 in the data table is “Y1” at 0:00 on Monday, January 2, 2012. The case will be described.
When one hour elapses from 2:00 on Monday, January 2, 2012, and reaches 1:00 on Monday, January 2, 2012, the calculation unit 35 sets 0 on Monday, January 2, 2012. : Calculate the cumulative cumulative exposure dose from 00 to 1:00. It is assumed that this time cumulative exposure dose is “Y2”. As shown in FIG. 4B, the calculation unit 35 calculates “(Y1 + Y2) / 2” as a time accumulated exposure amount from 00:00 to 10:00 on Monday, and updates the data table.

By the way, as described above, when missing measurement occurs, the time accumulated exposure dose in the time zone including the missing measurement is not updated, and the time accumulated exposure dose is estimated using the data table. For example, as shown in FIG. 3A, when a missing measurement occurs on Tuesday, January 3, 2012, from 0:30 to 1:59, the data table shown in FIG. 3B is used. The time cumulative exposure at 00:00 to 1:00 on Tuesday, January 3, 2012 is X1 μSV, and the time cumulative exposure at 1:00 to 2:00 on Tuesday, January 3, 2012 is Estimated to be X2 μSV.
Note that no missing measurement occurred between 0:00 and 0:29. However, in this case, it is difficult to appropriately calculate the time accumulated exposure dose from 0:00 to 1:00 by using the measured dose value. Therefore, the measured dose value from 0:00 to 0:29. Is not used to calculate the cumulative dose and the time cumulative dose.

The calculation unit 35 calculates the cumulative exposure dose after estimating the time cumulative exposure dose in the time zone when the missing measurement has occurred by such a method.
That is, for example, in the above-described example, when calculating the cumulative exposure dose at 2:00 on Tuesday, January 3, 2012, the cumulative exposure dose until 0:00 on January 3, 2012, Based on the output from the storage unit 34, the measured dose values are calculated by sequentially integrating. Then, the cumulative exposure is obtained by adding the time cumulative exposure dose (X1 μSV, X2 μSV) at 00:00 to 2:00 on Tuesday, January 3, 2012 estimated by the above-described method. Amount.

  Further, the calculation unit 35, based on the above-described data table, accumulates the cumulative exposure when 30 days have elapsed from the time of measurement (hereinafter, “cumulative value after 30 days”), and cumulative when 90 days have elapsed since the time of measurement. Exposure dose (hereinafter “cumulative value after 90 days”), cumulative exposure dose when half a year has passed since measurement (hereinafter “cumulative value after half a year”), cumulative exposure dose when a year has passed since measurement ( Estimate cumulative exposure dose).

A method of predicting the cumulative value after 30 days at 2:00 on Monday, January 2, 2012 will be described. First, the control unit 23 accumulates the time accumulated exposure dose for each day of the week. Here, since the next 30 days elapse, Monday and Tuesday are 5 times, and Wednesday to Sunday are 4 times. Therefore, a value obtained by multiplying the accumulated value of time accumulated exposure on Monday by “5” (hereinafter, “value”) H1 ”), a value obtained by multiplying the cumulative value of time cumulative exposure on Tuesday by“ 5 ”(hereinafter“ value H2 ”), and a value obtained by multiplying the cumulative value of time cumulative exposure on Wednesday by“ 4 ”( Hereinafter, “value H3”), a value obtained by multiplying the accumulated value of time accumulated exposure dose on Thursday by “4” (hereinafter, “value H4”), and an accumulated value of time accumulated exposure dose on Friday are set to “4”. The value obtained by multiplying the multiplied value (hereinafter referred to as “value H5”), the accumulated value of time accumulated exposure dose on Saturday by “4” (hereinafter referred to as “value H6”), and the accumulated value of time accumulated exposure dose on Sunday. A value obtained by multiplying “4” (hereinafter, “value H7”) is calculated. Then, a value obtained by integrating the values H1 to H7 (hereinafter, “value H8”) is calculated. Thereafter, the control unit 23 sets a value obtained by integrating the cumulative exposure dose to the value H8 as a cumulative value after 30 days.
The control unit 23 predicts the 90-day cumulative value, the half-year cumulative value, and the estimated cumulative exposure dose by a method according to this.

  The control unit 23 causes the display unit 12 to display the reference cumulative exposure amount, the estimated cumulative exposure amount, and the cumulative exposure amount calculated in this way together with the measured dose value.

  By the way, as described above, the storage unit 34 stores user information including the age, sex, and presence / absence of pregnancy of the user. Further, a grade table for classifying the measured dose value, the accumulated value after 30 days, the accumulated value after 90 days, and the accumulated value after six months into each grade based on this user information is stored.

FIG. 5 shows an example of a grade table for pregnant Z-year-old women. As shown in FIG. 5, the grade table represents the correspondence between each measured grade, the accumulated value after 30 days, the accumulated value after 90 days, and the accumulated value after six months, and each grade. The control unit 23 refers to the grade table to determine which grade each of the measured value, the accumulated value after 30 days, the accumulated value after 90 days, and the accumulated value after six months and outputs the corresponding grade to the display unit 12. And display.
In addition, the memory | storage part 34 has memorize | stored the grade table which changes according to a user's age, sex, and the presence or absence of pregnancy.

According to said 1st embodiment, there can exist the effect described below.
(1) Generally, users often act under a certain pattern according to the day of the week or time of day. It often changes in a certain pattern. According to the present embodiment, referring to the data table, in order to estimate the time cumulative exposure dose including the time zone in which the missing measurement occurs, the time cumulative exposure dose including the missing measurement is appropriately determined based on the user's behavior pattern. Can be estimated. Therefore, even if the measurement value is missing due to, for example, the power supply of the radiation measuring apparatus 10 being turned off, the cumulative exposure dose can be calculated appropriately.

  (2) Moreover, since the estimated accumulated exposure dose is displayed on the radiation measuring apparatus 10, the user can predict how the accumulated exposure dose will change. For this reason, it is possible to prevent the cumulative exposure amount from reaching the upper limit value and causing a serious situation.

  (3) Since the estimated cumulative exposure is predicted using the data table indicating the correspondence between the time information and the time cumulative exposure, the estimated cumulative exposure is appropriately determined based on the user's behavior pattern. The cumulative value after day, the cumulative value after 90 days, and the cumulative value after six months can be calculated.

  (4) In addition, when the measured value of the dose is low, it is difficult for a user who does not have expert knowledge to understand what the measured value means. In this regard, in the present embodiment, since the reference cumulative exposure dose is displayed, it is easier to understand the meaning of the measurement value by referring to the reference cumulative exposure dose even when the measurement value is low. .

(5) Even if individuals without specialized knowledge are provided with dose measurements and cumulative exposure, it is difficult to understand what these values mean and to understand the status of exposure It is. In this respect, in this embodiment, the measured dose value, the cumulative value after 30 days, the cumulative value after 90 days, and the cumulative value after six months are classified and displayed in a plurality of grades. It is possible to intuitively grasp the state of exposure.
Note that the cumulative exposure dose and the estimated cumulative exposure dose may be classified into a plurality of grades and displayed by a method according to the method described above.

(Second embodiment)
Hereinafter, a second embodiment embodying the present invention will be described based on FIGS. 6 to 10 with a focus on differences from the first embodiment. In addition, in these FIGS. 6-10, about the element same as each element demonstrated in 1st embodiment, the respectively same code | symbol is shown, The overlapping description about these elements is omitted.

In the present embodiment, an exposure management system including the radiation measuring apparatus 10 and the central monitoring apparatus 70 will be described.
As shown in FIG. 6, the apparatus main body 11 of the radiation measurement apparatus 10 according to the present embodiment acquires the current position of the radiation measurement apparatus 10 in addition to the apparatus main body 11 described in the first embodiment. Wireless communication unit 27 capable of mutual wireless communication with position information acquisition unit 26 and central monitoring device 70. The position information acquisition unit 26 acquires the current position of the radiation measurement apparatus 10 through a GPS (Global Positioning System) or the like.
The central monitoring device 70 includes a wireless communication unit 71 that can wirelessly communicate with the wireless communication unit 27 and a command unit 72 that executes various processes.

  The apparatus main body 11 outputs the measured dose value and the above-described user information previously input to the storage unit 34 to the wireless communication unit 27 through the buffer 24. The wireless communication unit 27 transmits a signal (corresponding to the “first wireless signal” of the present invention) that includes these pieces of information and requests an instruction to the central monitoring device 70 via wireless communication. In addition, a signal transmitted from the central monitoring device 70 is received through the wireless communication unit 27 and output to the control unit 23.

The command unit 72 stores a recommendation table in which the allowable value of the measured dose value, the allowable value of the cumulative exposure amount, and the allowable value of the estimated cumulative exposure amount are determined for each age, sex, and presence / absence of pregnancy of the user. These permissible values are preferably set in accordance with ICRP (World Radiation Protection Commission) recommendations. Further, when an accident occurs at a nuclear power plant or the like, or when the standard of the recommendation of ICRP is changed, it is more preferable to change appropriately.
The command unit 72 selects a command based on various information transmitted from the radiation measurement apparatus 10 and the recommendation table, and transmits the command to the radiation measurement apparatus 10.

Next, the overall flow of processing in such an exposure management system will be described with reference to FIG. This process is executed by the control unit 23 (corresponding to “setting unit”, “determination unit”, “prediction determination unit” of the present invention) every elapse of a predetermined time.
As shown in FIG. 7, when this process is started, the radiation measurement apparatus 10 first measures the dose and stores the measurement value m (step S100).

  Next, the reference cumulative exposure dose is calculated (step S105), and the measured dose m and the reference cumulative exposure dose are displayed on the display unit 12 (step S110). Then, the measurement value m is time-differentiated (primary differentiation) to calculate the increase rate of the measurement value m (step S115). In addition, since reference accumulated exposure amount was demonstrated in said 1st embodiment, detailed description here is omitted.

Thereafter, it is determined whether or not the measured value m is greater than or equal to the first alert value A1 (step S120). The first alert value A1 is a value set by the control unit 23 according to the gender, age, and presence / absence of pregnancy that is input in advance. If the user is a woman, the first alert value A1 is greater than the case where the user is a man. Is also set to a small value. Moreover, a smaller value is set as the age of the user is lower. Furthermore, when the user is a pregnant woman, the smallest value is set.
When it is determined that the measured value m is less than the first warning value A1 (step S120; NO), it is next determined whether or not a dose greater than or equal to the first warning value A1 is expected (step). S125).

A method for determining whether or not a dose greater than or equal to the first alert value A1 is expected to be measured will be described with reference to FIGS. 8 (a) and 8 (b).
FIG. 8 shows a graph showing an example of the transition of the measured value m. Here, a case where the measurement value m at the measurement time t1 is “m1” will be described.

First, the control unit 23 calculates an increase rate of the measurement value m (first derivative value of the measurement value m). Then, as shown in FIGS. 8A and 8B, an expected time t _c at which the measured value m reaches the first alert value A1 is calculated based on the increase rate and the measured value m.
As shown in FIG. 8A, when the difference between the predicted time t _c and the measurement time t1 is greater than a predetermined value C, it is determined that a dose greater than or equal to the first warning value A1 is not expected. On the other hand, as shown in FIG. 8 (b), when the difference between the predicted time t _c and the measurement time t1 is smaller than the predetermined value C is expected to first vigilance value A1 or more doses are measured It is determined that.

If it is determined that a dose greater than or equal to the first alert value A1 is not expected to be measured (step S125; NO), this process is temporarily terminated.
On the other hand, if it is determined that a dose greater than or equal to the first alert value A1 is expected (step S125; YES), a fourth alarm is output (step S130), and then radiation detection and display are displayed on the display unit 12. (Step S135), and this process is temporarily terminated.

  On the other hand, when it determines with the measured value m being 1st warning value A1 or more in step S120 (step S120; YES), the control part 23 next makes the measured value m 2nd warning value A2 ( It is determined whether or not (corresponding to “first predetermined value” of the present invention) or more (step S140). This second warning value A2 is a value larger than the first warning value A1, and, similar to the first warning value A1, according to the gender, age, and presence / absence of pregnancy input in advance, the control unit 23 is a value to be set, and is set to a smaller value when the user is female than when the user is male. Moreover, a smaller value is set as the age of the user is lower. Furthermore, when the user is a pregnant woman, the smallest value is set.

  When it is determined that the measured value m is less than the second alert value A2 (step S140; NO), it is determined whether or not a dose greater than the second alert value A2 is expected to be measured (step S145). . The procedure for determining whether or not a dose greater than or equal to the second alert value A2 is expected to be measured is a procedure that conforms to the procedure in step S125 described above, and will not be described in detail here.

When it is determined that a dose greater than or equal to the second alert value A2 is not expected to be measured (step S145; NO), a first alarm is output (step S150), and then radiation detection is displayed on the display unit 12 ( In step S135), this process is temporarily terminated.
On the other hand, if it is determined that a dose greater than or equal to the second alert value A2 is expected to be measured (step S145; YES), a fourth alarm is output (step S155), and then a warning is displayed on the display unit 12. (Step S160), and an information acquisition process is executed (Step S195). The information acquisition process will be described later.

  On the other hand, if it is determined in step 140 that the measured value m is greater than or equal to the second warning value A2 (step S140; YES), the control unit 23 then sets the measured value m to the third warning value A3 (main It is determined whether or not (corresponding to “first predetermined value” of the invention) or more (step S165). This third warning value A3 is a value larger than the second warning value A2, and, similar to the second warning value A2, according to the gender, age, and presence / absence of pregnancy input in advance, the control unit 23 is a value to be set, and is set to a smaller value when the user is female than when the user is male. Moreover, a smaller value is set as the age of the user is lower. Furthermore, when the user is a pregnant woman, the smallest value is set.

  When it is determined that the measured value m is less than the third alert value A3 (step S165; NO), it is determined whether or not a dose greater than the third alert value A3 is expected to be measured (step S170). . The procedure for determining whether or not a dose greater than or equal to the third alert value A3 is expected to be measured is a procedure that conforms to the procedure in step S125 described above, and will not be described in detail here.

When it is determined that a dose greater than or equal to the third alert value A3 is not expected to be measured (step S170; NO), a second alarm is output (step S175), and then a warning is displayed on the display unit 12 ( Step S160), an information acquisition process is executed (Step S195).
On the other hand, if it is determined that a dose greater than or equal to the third alert value A3 is expected to be measured (step S170; YES), a fourth alarm is output (step S180), and then the display unit 12 displays evacuation required. (Step S190), and an information acquisition process is executed (Step S195).

  On the other hand, when it determines with the measured value m being 3rd warning value A3 or more in step S165 (step S165; YES), the control part 23 outputs a 3rd alarm next (step S185), Thereafter, the display unit 12 displays that evacuation is required (step S190), and executes information acquisition processing (step S195).

Next, the information acquisition process will be described with reference to FIG.
As shown in FIG. 9, when this process is started, the control unit 23 first sets a standby time T (step 300), and then determines whether or not the standby time T has elapsed (step 300). S305). The initial value of the waiting time T is set to “0”.
If it is determined that the standby time T has not elapsed (step S305; NO), the system waits until the standby time T has elapsed.

When it is determined that the standby time T has elapsed (step S305; YES), the control unit 23 acquires a command code (step S310).
The command code is acquired according to the following procedure. That is, the radiation measuring apparatus 10 first sends a signal indicating that a command is requested including the measured value m of the dose and the user information including the age, sex and presence / absence of pregnancy input in advance. Send to. As described above, the central monitoring device 70 recommends that the tolerance value of the measurement value of radiation, the tolerance value of the cumulative exposure amount, and the tolerance value of the estimated cumulative exposure amount are determined for each user's age, sex, and presence / absence of pregnancy. Since the table is stored, the command code is selected according to the received various information and transmitted to the radiation measuring apparatus 10. The control unit 23 acquires this command code through the wireless communication unit 27.

  Next, the control unit 23 acquires the standby time T (step S315). The waiting time T is set by the central monitoring device 70 based on the dose measurement value m transmitted from the radiation measuring device 10 to the central monitoring device 70 and transmitted to the radiation measuring device 10. The waiting time T is set so as to be shorter as the measured value m is larger. Moreover, it sets so that it may become short, so that a user's age is low. Furthermore, when the user is a woman, it is set to be shorter than when the user is a man, and when the user is pregnant, it is set to be the shortest.

  And the control part 23 displays the command code received from the central monitoring apparatus 70 on the display part 12 (step S320), and once complete | finishes this process.

Next, an example of display on the display unit 12 and transition of an alarm when such processing is performed will be described with reference to FIG.
As shown in FIG. 10, when it is determined that the dose measurement value m rises and a dose greater than or equal to the first alert value A1 is expected (timing t1), a fourth alarm is output. In addition, radiation detection is displayed on the display unit 12. When the measured value m reaches the first alert value A1 (timing t2), a first alarm is output. The display unit 12 continues to display radiation detection.

  Thereafter, when it is determined that the measured value m gradually rises and a dose greater than or equal to the second warning value A2 is expected to be measured (timing t3), a fourth alarm is output and the display unit 12 Is displayed as a warning. When the measured value m reaches the second alert value A2 (timing t4), a second alarm is output. Note that the display unit 12 continues to display a warning.

When the measured value m of the dose decreases and becomes the second warning value A2 again (timing t5) and then falls below the second warning value A2, the first alarm is output and the display unit 12 displays radiation detection. The
As shown in FIG. 10, when the measured value m rises again and a dose greater than the second warning value A2 is expected to be measured (timing t6), a fourth alarm is output and a warning is required. The After that, when the measured value m1 starts to fall without reaching the second warning value A2 (timing t7), a second alarm is output and the display unit 12 displays radiation detection.

  Thereafter, the measured value m of the dose continues to decrease to become the first warning value A1 (timing t8). When the dose falls below the first warning value A1, no alarm is output and no display is made on the display unit 12.

As shown in FIG. 10, when the dose measurement value m suddenly rises again and a dose greater than or equal to the first alert value A1 is expected (timing t9), the fourth alarm is While being output, the display unit 12 displays radiation detection. When the measured value m reaches the first warning value A1 (timing t10), the first alarm is output.
When the measured value m continues to rise and a dose greater than the second alert value A2 is expected to be measured (timing t11), a fourth alarm is output and a warning is displayed on the display unit 12. Is done. When the measured value m reaches the second warning value (timing t12), a second alarm is output.
When the measured value m further rises and it is expected that a dose equal to or greater than the third alert value A3 will be measured (timing A13), a fourth alarm is output and the display unit 12 indicates that evacuation is required. Is done. When the measured value m reaches the third warning value A3 (timing t14), a third alarm is output.

  As described above, the control unit 23 determines whether or not a dose exceeding a predetermined warning value is expected to be measured based on the measured dose value m and the increase rate. For this reason, as shown in FIG. 10, when the measured value m increases rapidly (for example, timing t9 to timing t13), when the measured value m of the dose increases gently (for example, timing t2 to timing). From t4), a fourth alarm is output in anticipation that a dose greater than the warning value is measured from when the actual measurement value m is lower. Therefore, when the measured value m of the dose is rapidly increasing, it is possible to display an evacuation or to send a signal to the central monitoring device 70 at an earlier stage than when the dose is slowly increasing. It becomes like this.

According to said 2nd embodiment, in addition to each effect mentioned above, there can exist the effect described below.
(6) According to the present embodiment, a command corresponding to the measured dose value m can be displayed on the display unit 12.

  (7) Moreover, the 1st warning value A1, the 2nd warning value A2, and the 3rd warning value A3 are set based on user information (a user's age, sex, the presence or absence of pregnancy). For this reason, the action which should be taken can be displayed on the display part 12, after performing the comprehensive judgment based on the measured value m and user information.

  (8) When the measured value m is equal to or greater than the second warning value A2, the central monitoring device 70 selects a command based on the information including the user's age, gender, and the presence of pregnancy and the measured value m. And transmitted to the radiation measuring apparatus 10. Therefore, the user can select an action to be taken based on a command output from the central monitoring device 70 without determining how to act for each individual. For this reason, even an individual who does not have specialized knowledge can select an appropriate action.

  (9) Since the user information including the age, sex and presence / absence of pregnancy is transmitted from the radiation measuring apparatus 10 to the central monitoring apparatus 70 together with the measured dose m, the central monitoring apparatus In 70, an appropriate command can be set and transmitted to the user without managing or searching for information about the user. Therefore, it is possible to prevent the central monitoring device 70 from stagnating in processing.

  (10) The radiation measuring apparatus 10 displays various commands transmitted from the central monitoring apparatus 70. For this reason, for example, when a recommendation in the ICRP (World Radiation Protection Commission) is changed due to a change in knowledge about the influence of radiation on the human body in the future, the recommendation stored in the central monitoring device 70 is stored. By changing the table, a command corresponding to this change can be transmitted to the radiation measuring apparatus 10. Therefore, even if such a change is made, the user can receive a command corresponding to this change without performing any processing for responding to this change. Can respond flexibly to various changes.

  (11) Even when a dose greater than the predetermined warning value is not measured, if it is determined that a dose greater than the warning value is expected to be measured, a message to that effect is displayed. Therefore, it can suppress that a user is exposed to the radiation beyond a warning value.

  (12) Even if the measured value m is low, if the signal is transmitted from the radiation measuring apparatus 10 to the central monitoring apparatus 70, the central monitoring apparatus 70 receives a large amount of signals. There is a risk that the processing will stagnate. In this regard, in this embodiment, if the measured value m is less than the second warning value A2 and it is not expected that a dose greater than the second warning value A2 is measured, the central monitoring device 70 is not notified. ing. For this reason, it is possible to prevent the central monitoring device 70 from stalling the processing.

  (13) In addition, since wireless communication consumes a large amount of power, when the amount of charge of the radiation measuring apparatus 10 is small, the power of the radiation measuring apparatus 10 is turned off by performing wireless communication, and the dose is measured. You might not be able to. In this regard, according to the present embodiment, when the standby time T is received, wireless communication with the central monitoring device 70 is prohibited until the standby time T elapses. Can be prevented from being consumed.

(Third embodiment)
Hereinafter, a third embodiment embodying the present invention will be described with reference to FIGS. 11 to 13 with a focus on differences from the second embodiment. In addition, in these FIGS. 11-13, about the element same as each element demonstrated in 2nd embodiment, the respectively same code | symbol is shown, The overlapping description about these elements is omitted.

In the second embodiment described above, the alarm and display are changed based on the measured dose value m. On the other hand, in this embodiment, an alarm and a display are changed based on the estimated accumulated exposure dose ea. Further, when the estimated cumulative exposure amount ea is equal to or greater than a predetermined value, when the command code is acquired in the above-described information acquisition process (step S310), the command including the user information and the estimated cumulative exposure amount ea is requested. A signal to the effect (corresponding to “third radio signal”) is transmitted to the central monitoring device 70.
Hereinafter, the overall flow of processing in such an exposure management system will be described with reference to FIG. This process is executed by the control unit 23 (corresponding to “setting means” of the present invention) every elapse of a predetermined time of the radiation measuring apparatus 10.

  As shown in FIG. 11, when this process is started, the control unit 23 measures the dose (step S400), and calculates the cumulative exposure dose am and the estimated cumulative exposure dose ea (step S405). Then, the measured value m, the cumulative exposure dose am, and the estimated cumulative exposure dose ea are displayed on the display unit 12 (step S410). In addition, since the calculation method of the cumulative exposure dose am and the estimated cumulative exposure dose ea has been described in the first embodiment, detailed description thereof is omitted here.

  Next, the control unit 23 determines whether or not the estimated cumulative exposure dose ea is equal to or greater than the first cumulative value C1 (corresponding to “third predetermined value” of the present invention). The first cumulative value C1 is a value set by the control unit 23 in accordance with the user's gender, age, and presence / absence of pregnancy, and when the user is female, the first cumulative value C1 is male. Is set to a smaller value. Moreover, a smaller value is set as the age of the user is lower. Furthermore, when the user is a pregnant woman, the smallest value is set.

When it is determined that the estimated accumulated exposure amount eam is less than the first accumulated value C1 (step S415; NO), the processes after step S400 are repeated.
On the other hand, when it is determined that the estimated cumulative exposure amount ea is equal to or greater than the first cumulative value C1 (step S415; YES), the estimated cumulative exposure amount eam is then set to the second cumulative value C2 ("third predetermined value" of the present invention). It is determined whether or not it is equal to or more (step S420). The second cumulative value C2 is larger than the first cumulative value C1, and, like the first cumulative value C1, is controlled according to the gender, age, and presence / absence of pregnancy input in advance. The value set by the unit 23 is set to a smaller value when the user is female than when the user is male. Moreover, a smaller value is set as the age of the user is lower. Furthermore, when the user is a pregnant woman, the smallest value is set.

When it is determined that the estimated cumulative exposure amount eam is less than the second cumulative value C2 (step S420; NO), a second alarm is output (step S425), and then a warning is displayed on the display unit 12 (step S430). ), An information acquisition process is executed (step S450). Since the information acquisition process has been described in the second embodiment, a detailed description thereof is omitted here.
When it is determined that the estimated cumulative exposure amount ea is equal to or greater than the second cumulative value C2 (step S420; YES), a third alarm is output (step S440), and then the display unit 12 is displayed to indicate evacuation (step S445). ), An information acquisition process is executed (step S450).

Next, an example of the display on the display unit 12 and an alarm transition when such a process is performed will be described with reference to FIG. 12 showing an example of the transition of the cumulative exposure amount am and the estimated cumulative exposure amount ea. .
As shown in FIG. 12, the estimated cumulative exposure amount ea increases as the cumulative exposure amount am increases. When the estimated cumulative exposure amount ea reaches the first cumulative value C1, a warning is displayed on the display unit 12, and a second alarm is output. Further, when the estimated accumulated exposure amount ea reaches the second accumulated value C2, evacuation is displayed on the display unit 12, and a third alarm is output.

According to the said 3rd embodiment, in addition to each effect mentioned above, there can exist the effect described below.
(14) According to the present embodiment, a command according to the estimated cumulative exposure dose ea can be transmitted from the central monitoring device 70 to the radiation measurement device 10. For this reason, before the cumulative exposure amount am reaches the upper limit value, an instruction such as evacuation can be transmitted to the user.

(Fourth embodiment)
Hereinafter, an embodiment of the present invention according to the radiation management system will be described with reference to FIGS. 13 and 14. The radiation management system according to the present invention includes a radiation measuring apparatus 10 and a simple radiation detector 50.
First, a detailed configuration of the radiation measuring apparatus 10 and the simple radiation detector 50 according to the embodiment of the present invention will be described with reference to FIG. FIG. 13 shows a plane configuration and a bottom configuration of the radiation measuring apparatus 10 for measuring a dose and the simple radiation detector 50. FIG. 14 is a block diagram showing the configuration of the radiation measuring apparatus 10 and the simple radiation detector 50.

  13 and 14 show a radiation management system 30 including one radiation measuring apparatus 10 and one simple radiation detector 50. The radiation management system 30 in the present invention includes a plurality of simple radiation detectors 50. FIG. It may be provided. In this case, each simple radiation detector 50 is given a unique identification number, for example, a 32-digit identification number, and each identification number is managed by the radiation measuring apparatus 10.

  As shown in FIG. 13A, the radiation measuring apparatus 10 includes an apparatus main body 11 and a band 14, and is formed in a shape simulating a wristwatch. The user can carry the apparatus main body 11 on the body by winding the band 14 around the wrist. As shown in FIG. 13B, the simple radiation detector 50 includes a detector main body 51 and a band 54, and is formed in a shape simulating a wristwatch. The user can carry the detector main body 51 on his / her body by winding the band 54 around the wrist.

  On the upper surface of the apparatus main body 11 of the radiation measuring apparatus 10, a display unit 12 made of liquid crystal and displaying a measured dose value and an alarm unit 15 for displaying an alarm are provided. An operation unit 13 including a plurality of switches 13 a to 13 c for performing mode switching, time operation, and the like is provided around the apparatus main body 11. A buzzer 16 is built in the bottom surface of the apparatus main body 11. The buzzer 16 emits a different sound depending on the alarm output to the alarm unit 15.

  An alarm unit 52 for displaying an alarm is provided on the upper surface of the detector main body 51 of the simple radiation detector 50, and a DIP switch 53 for identifying the identification of the simple radiation detector 50 is provided on the bottom surface. It has been. The DIP switch 53 is a switch for setting identification information of the simple radiation detector 50. For example, the ID of the simple radiation detector 50 consisting of a numerical value of 8 bits can be set. In the present embodiment, the switches 53a to 53e are configured, and the setting is performed by each ON / OFF. When there are five switches as in the present embodiment, 32 types of IDs can be set according to the combination of ON / OFF of each switch. The radiation measuring apparatus 10 identifies and manages each simple radiation detector 50 based on this ID.

  The radiation measuring apparatus 10 and the simple radiation detector 50 communicate using a communication standard such as NFC (Near Field Communication). Since the communication function using such a communication standard is provided, near field communication can be performed between the radiation measurement apparatus 10 and the simple radiation detector 50 without using a communication network.

FIG. 14 is a block diagram illustrating the configuration of the apparatus main body 11 of the radiation measurement apparatus 10 illustrated in FIG. 13 and the detector main body 51 of the simple radiation detector 50.
First, the apparatus main body 11 of the radiation measuring apparatus 10 will be described. As shown in FIG. 14, the apparatus main body 11 includes a measurement unit 21 that measures radiation, a control unit 23 that executes various calculations, a short-range wireless communication unit 25, a position information acquisition unit 26, and the like.

The measurement unit 21 includes a radiation detection unit 31 that detects radiation, a signal amplification unit and a pulse height discrimination unit (not shown), a counting unit 32 that counts processed signals, and a pulse signal output from the counting unit 32 And a calculation unit 33 for calculating
The radiation detection unit 31 is a semiconductor element sensitive to radiation. For example, when γ rays are incident on the radiation detection unit 31, a signal having a peak value corresponding to the energy of the incident radiation is output to the counting unit 32. Output.
As the radiation detection unit 31, a semiconductor element such as silicon or cadmium telluride may be used, or a combination of a scintillator and a photomultiplier tube may be used.

As described above, the counting unit 32 includes a signal amplifying unit and a wave height discriminating unit. After the signal output from the radiation detection unit 31 is amplified by the signal amplification unit, only the signal having a certain peak value is discriminated by the peak discrimination unit, and the corresponding pulse signal is output.
The calculation unit 33 stores a conversion coefficient for converting an electric signal into a radiation dose and a correction coefficient for correcting variation of the apparatus. The pulse signal output from the counting unit 32 is counted, converted into a unit such as a 1 cm dose equivalent (rate), and output to the shared memory 22.
The shared memory 22 temporarily stores the output value from the measurement unit 21 and outputs it to the control unit 23.

  The position information acquisition unit 26 detects the current position of the radiation measurement apparatus 10 through GPS (Global Positioning System) or the like, and outputs the detected current position of the radiation measurement apparatus 10 to the short-range wireless communication unit 25.

  The short-range wireless communication unit 25 can perform short-range wireless communication (communication distance 40 to 60 m) with the simple radiation detector 50. A signal transmitted from the simple radiation detector 50 and received through the short-range wireless communication unit 25 is output to the buffer 24 together with information on the current position output from the position information acquisition unit 26.

The buffer 24 temporarily stores the output from the short-range wireless communication unit 25 and outputs it to the control unit 23.
The control unit 23 performs transmission / reception control of various signals performed with the short-range wireless communication unit 25, processing of signals transmitted from the simple radiation detector 50, and measurement output from the measurement unit 21 through the shared memory 22. Performs all kinds of processing such as value storage and computation.
In addition, display control of the display unit 12 and the alarm unit 15 and control of the alarm sound of the buzzer 16 are performed, and predetermined processing corresponding to the operation signal input from the operation unit 13 is performed.

  Next, the simple radiation detector 50 will be described. As shown in FIG. 14, the detector main body 51 includes a radiation detection unit 61 that detects radiation, a counting unit 62, a comparison unit 64 that processes a signal detected by the radiation detection unit 61, and the like.

The radiation detector 61 has the same configuration as the radiation detector 31 described above. The counting unit 62 has the same configuration as the counting unit 32 described above, and outputs a pulse signal to the shared memory 22.
The shared memory 22 temporarily stores the output value from the counting unit 62 and outputs it to the comparison unit 64.

  The comparison unit 64 performs display control of the alarm unit 52. Further, a predetermined threshold value is stored in advance, the pulse signal output from the counting unit 62 through the shared memory 63 is compared with the threshold value stored in advance, and when the pulse signal is equal to or greater than the predetermined threshold value, An alarm is displayed on the alarm unit 52.

  According to the radiation management system 30 having such a configuration, when the comparison unit 64 determines that the pulse signal output from the counting unit 62 is larger than the threshold value stored in advance, the comparison unit 64 This is output to the alarm unit 52 and the short-range wireless communication unit 65.

The short-range wireless communication unit 65 notifies the short-range wireless communication unit 25 configuring the radiation measurement apparatus 10 by wireless communication. The short-range wireless communication unit 25 outputs a report from the simple radiation detector 51 to the control unit 23.
Based on this report, the control unit 23 causes the display unit 12 to display that the simple radiation detector 50 may have detected a radiation of a predetermined threshold value or more, and outputs a fifth alarm to the alarm unit 15. .

According to the fourth embodiment, the following effects can be obtained.
(15) According to the above embodiment, the simple radiation detector 50 does not need to convert the output from the counting unit 32 into a dose. For this reason, it is not necessary to obtain a conversion coefficient for converting an electric signal into a radiation dose, obtain a correction coefficient for correcting variations in the apparatus, and regularly check these coefficients. For this reason, radiation can be detected with a simple configuration. Therefore, the manufacturing cost is reduced, and labor and running costs during use can be saved. Furthermore, it is possible to save labor for maintenance and calibration work using radioactive substances.

  (16) Since the simple radiation detectors 50 are distinguished using the DIP switch 53, a plurality of simple radiation detectors 50 can be introduced into one radiation measurement device 10. In this case, it is preferable that the alarm unit 15 outputs a different alarm for each simple radiation detector 50 when the simple radiation detector 50 notifies the radiation measuring apparatus 10.

  (17) Further, since the radiation measuring apparatus 10 can convert the output from the counting unit 32 into a dose, when determining that there is a possibility that a high dose may be detected using the simple radiation detector 50, the radiation is measured. The dose can be measured using the detection device 10.

  (18) Moreover, the radiation management system 30 can be purchased by a family member, adults can be equipped with the radiation measurement apparatus 10, and children near the adults can be equipped with the simple radiation detector 50. Since the radiation measuring apparatus 10 and the simple radiation detector 50 can communicate with each other by short-range wireless communication, when a child goes to a place slightly away from an adult and a high dose is detected there, that fact The radiation measurement apparatus 10 is notified promptly. For this reason, an adult can promptly instruct a child to go to a safe place quickly.

(Other embodiments)
In addition, the radiation measuring apparatus 10 according to the present invention, the exposure management system using the radiation measuring apparatus 10, and the radiation management system 30 are not limited to the configuration exemplified in the above embodiment, and the embodiment is appropriately changed. It can also be implemented as the following form. The following modifications are not applied only to the above-described embodiment, and different modifications can be combined with each other.

  As shown in FIG. 15, an information terminal device 81 capable of performing short-range wireless communication with the radiation measurement apparatus 10 and communicating with the central monitoring apparatus 70 may be provided. Information output from the radiation measuring apparatus 10 is transmitted to the information terminal device 81 via short-range wireless communication, and then transmitted from the information terminal device 81 to the central monitoring device 70. Then, the central monitoring device 70 transmits a predetermined command to the information terminal device 81, and the information terminal device 81 transmits this command to the radiation measurement device 10 via short-range wireless communication.

  According to this modification, the radiation measuring apparatus 10 and the central monitoring apparatus 70 can communicate with each other via the information terminal device 81 without directly communicating. That is, the central monitoring device 70 does not exchange information with each radiation measurement device 10 but exchanges information with the information terminal device 81. For this reason, since the central monitoring device 70 does not need to process a large amount of wireless communication, the central monitoring device 70 can suppress the stagnation of processing.

As shown in FIG. 16, the information transmitted from the radiation measuring apparatus 10 may be plotted on a map. In this modification, as shown in FIG. 16, it is preferable to display on a map, together with user information about each user, how many people there are in each region. . It is also possible to display on the map how much dose has been measured in which area, along with user information regarding each user.
According to this modification, it is possible to visually express how much dose has been measured in which region. Further, since not only the measured dose value but also each user information can be displayed together, it is possible to take detailed measures according to the situation of each region.

  In the above modification, the measurement value m of the dose is plotted on the map. However, the present invention is not limited to this, and the individual cumulative exposure dose am or the estimated cumulative exposure dose ea. You may show on a map with the present position. Also in this modification, the effect similar to the said modification can be show | played.

  Further, the map shown in FIG. 16 may be transmitted from the command unit 72 to each radiation measurement apparatus 10. According to this modification, each user can confirm the measured value m of the dose in other areas, and can take more appropriate action.

As shown in FIG. 17, measuring the blood oxygen concentration SPO, body temperature Tem, pulse G, blood pressure P and respiratory rate B of the user with respect to the radiation measuring apparatus 10 described in the second embodiment. It is good also as a structure (equivalent to the "portable monitoring apparatus" of this invention) which added the biometric information acquisition part 28 which can do.
In this modification, based on the output from the biological information acquisition unit 28, the control unit 23 (corresponding to the “monitoring unit” and “determination unit” of the present invention) monitors the blood oxygen saturation SPO at predetermined intervals. . When the control unit 23 detects that the blood oxygen saturation SPO is below a predetermined threshold, the control unit 23 measures the blood oxygen saturation SPO, the body temperature Tem, the pulse rate G, the blood pressure P, the respiration rate B, and the dose of the user. To start. In addition, the control unit 23 controls the central monitoring device when any one of the blood oxygen saturation SPO, the body temperature Tem, the pulse rate G, the blood pressure P, the respiratory rate B, and the measured value m of the dose is not in a predetermined region. 70 (corresponding to the “contact organization” of the present invention) relates to the blood oxygen concentration SPO of the user, the body temperature Tem, the pulse rate G, the blood pressure P, the respiratory rate B, the measured value m of the dose, and the current position of the user. Send information.

Further, the control unit 23 determines whether or not a value outside the region is expected to be measured even when the dose measurement value m is in a predetermined region. When it is determined that a certain value is expected to be measured, this is transmitted to the central monitoring device 70 to that effect.
According to this modification, based on the measured value of the blood oxygen concentration SPO, it is determined whether or not the user is in a state that requires an emergency call, and when the user is in a state that requires an emergency call, Information consisting of Tem, pulse rate G, blood pressure P, respiratory rate B, and dose measurement value m can be transmitted to the central monitoring device 70. Furthermore, it can be determined at the same time whether or not a dose of a value outside the region is expected to be measured.

  In the third embodiment, whether or not the estimated cumulative exposure amount ea is greater than or equal to the first cumulative value C1 (step S415), and whether or not the estimated cumulative exposure amount ea is greater than or equal to the second cumulative value C2 (step S420). However, the present invention is not limited to this. In step S415, it is determined whether or not the cumulative exposure dose am is greater than or equal to the third cumulative value C3 (corresponding to the “second predetermined value” of the present invention). In step 420, the cumulative exposure dose am is the fourth cumulative value. It may be determined whether it is equal to or greater than C4 (corresponding to the “second predetermined value” of the present invention).

  Note that the second cumulative value C2 is set by the control unit 23 in accordance with the user's sex, age, and presence / absence of pregnancy, as in the third cumulative value C3, the first cumulative value C1, and the like. This value is set to a smaller value when the user is female than when the user is male. Moreover, a smaller value is set as the age of the user is lower. Furthermore, when the user is a pregnant woman, the smallest value is set. Further, the fourth cumulative value C4 is a value larger than the third cumulative value C3, and, like the first cumulative value C1, etc., according to the gender, age, and presence / absence of pregnancy input in advance, The value set by the control unit 23 is set to a smaller value when the user is female than when the user is male. Moreover, a smaller value is set as the age of the user is lower.

In this modification, when the cumulative exposure am is equal to or greater than the third cumulative value C3 or the fourth cumulative value C4, when the command code is acquired in the information acquisition process (step S310), the user information and It is preferable to transmit to the central monitoring device 70 a signal (corresponding to a “second radio signal”) requesting a command, including the cumulative exposure dose am.
Moreover, it is preferable that the central monitoring apparatus 70 transmits a signal including a command based on the cumulative exposure dose am and the user information to the radiation measurement apparatus 10.

According to the above-described modification, when the cumulative exposure amount am is equal to or greater than the third cumulative value C3, the central monitoring device 70 uses at least one piece of information on the user's age, gender, and presence / absence of pregnancy and the cumulative exposure amount am. A command can be selected based on the above and transmitted to the radiation measuring apparatus 10. Therefore, the user can select an action to be taken based on a command output from the central monitoring device 70 without determining how to act for each individual.
Further, since the user information including at least one of the age, sex and presence / absence of the user is transmitted from the radiation measuring apparatus 10 to the central monitoring apparatus 70 together with the cumulative exposure dose am, the central monitoring apparatus 70. Thus, it is possible to set and transmit an appropriate command to the user without managing or searching for information about the user. Therefore, it is possible to prevent the central monitoring device 70 from stagnating in processing.

  -Moreover, in the modification mentioned above, you may make it transmit the signal to the effect of request | requiring a command to a central monitoring apparatus based on the estimated accumulation exposure amount ea and the accumulation exposure amount am.

  In the first embodiment, the time information is made up of the date and day of the measurement, and the time series data is made up of the measured dose value, the date and day of the measurement, and the day of the week. The time information and time-series data are not limited to this. The time information may be composed only of the time when the measurement is performed, and the time series data may be composed only of the measured value of the dose and the time when the measurement is performed. Further, it may be composed of only the day of the week when the time information is measured, and the time series data may be composed of only the measured day of the dose and the day of the week when the measurement is performed.

  In the first embodiment, the data table is created on the basis of the measured date and day of the week and the corresponding time accumulated exposure dose, but the data table of the present invention is not limited to this. For example, the data table may be created using only the measured time and the corresponding time accumulated exposure dose. Alternatively, the measurement value of the dose may be accumulated for each day of the week, and the data table may be created using only the measured day of the week and the value obtained by accumulating the measurement value of the dose on the corresponding day of the week.

  In the first embodiment, the time cumulative exposure dose is calculated in units of one hour, but the calculation interval of the time cumulative exposure dose is not limited to one hour, and may be longer. It may be shortened. For example, it may be calculated in units of 15 minutes.

  In the second embodiment, the first warning value A1, the second warning value A2, and the third warning value A3 are set based on the user's age, sex, and pregnancy status. The setting method of value A1, 2nd warning value A2, and 3rd warning value A3 is not restricted to this. For example, it may be set based on any one of the user's age, gender, and pregnancy status, or it may be set based on any one of the user's age, sex, and pregnancy status. Also good. Alternatively, a predetermined value may be set in advance regardless of the user's age, sex, and pregnancy. Alternatively, at least one of the first warning value A1, the second warning value A2, and the third warning value A3 may be set in the central monitoring device 70, and the set value may be transmitted to the radiation measuring device 10.

In the second embodiment, it is expected that a dose greater than or equal to the first warning value A1 is measured when the difference between the expected time t _c and the measurement time t1 is equal to or greater than the predetermined value C (step S125). However, the present invention is not limited to this. When the first derivative value of the measured dose value is larger than the predetermined value and the difference between the first warning value A1 and the measured dose value m is smaller than the predetermined value, the dose higher than the first warning value A1 is measured. It may be determined that it is expected.

  In addition, in determining whether or not a dose greater than the second warning value A2 is expected to be measured (step S145), the first-order differential value of the dose is greater than a predetermined value as in the above modification. It may be determined that a dose greater than or equal to the second alert value A2 is expected to be measured when the difference between the second alert value A2 and the measured dose value m is smaller than a predetermined value. Similarly, in determining whether or not a dose greater than or equal to the third alert value A3 is measured (step S170), the primary differential value of the dose is greater than a predetermined value, and the third alert value A3 and the dose are measured. It may be expected that a dose greater than or equal to the third alert value A3 is measured when the difference from the value m is smaller than a predetermined value.

  In the third embodiment, the first cumulative value C1 and the second cumulative value C2 are set based on the user's age, sex, and pregnancy status. The setting method of the value C2 is not limited to this. For example, it may be set based on any one of the user's age, gender, and pregnancy status, or it may be set based on any one of the user's age, sex, and pregnancy status. Also good. Alternatively, a predetermined value may be set in advance regardless of the user's age, sex, and pregnancy. Alternatively, at least one of the first cumulative value C1 and the second cumulative value C2 may be set by the central monitoring device 70, and the set value may be transmitted to the radiation measuring device 10.

  In the fourth embodiment, the radiation management system 30 including the radiation measuring apparatus 10 and the simple radiation detector 50 has been described. However, the radiation management system 30 is not limited to this. For example, the radiation measuring apparatus 10 may not be included, and only the single or plural simple radiation detectors 50 may be included. Also in the present invention, since an increase or decrease in dose can be detected, the dose can be detected simply.

  In the second embodiment or the third embodiment, the cumulative exposure amount am or the estimated cumulative exposure amount eam is calculated based on the data table, but the cumulative exposure amount or the estimated cumulative exposure amount ea in the present invention is calculated. The calculation method is not limited to this, and may be a value obtained by integrating the measurement values m.

  In each of the above embodiments, the alarm and the display are changed based on the measured value m or the estimated cumulative exposure amount eam. However, the present invention is not limited to this, and the alarm is based on the cumulative exposure amount am. The display may be changed.

  In each of the above embodiments, when estimating the estimated cumulative exposure, the cumulative exposure until one year has passed is estimated, but the present invention is not limited to this, and half a year passes. You may make it estimate the cumulative exposure amount in the past, or estimate the cumulative exposure amount until five years have passed.

  In each of the above embodiments, the user information includes the user's age, sex, and presence / absence of pregnancy, but the user information in the present invention is not limited to this. For example, the user's age, sex, and presence / absence of pregnancy may be one or any two of them. Furthermore, the presence or absence of a medical history that is easily affected by radiation may be included. In this modification, the grade table described in the first embodiment and the recommendation table described in the second embodiment are preferably changed according to user information.

DESCRIPTION OF SYMBOLS 10 ... Radiation measuring apparatus 11 ... Apparatus main body 12 ... Display part 13 ... Operation part 13a-c ... Switch 14 ... Band 15 ... Alarm part 16 ... Buzzer 21 ... Measurement part 22 ... Shared memory 23 ... Control part 24 ... Buffer 25 ... Near Distance wireless communication unit 26 ... position information acquisition unit 27 ... wireless communication unit 28 ... biological information acquisition unit 30 ... radiation management system 31 ... radiation detection unit 32 ... counting unit 33 ... calculation unit 34 ... storage unit 35 ... calculation unit 50 ... simple Radiation detector 51 ... Detector main body 52 ... Alarm unit 53 ... DIP switch 54 ... Band 61 ... Radiation detection unit 62 ... Counting unit 63 ... Shared memory 64 ... Comparison unit 65 ... Short-range wireless communication unit 70 ... Central monitoring device 71 ... Wireless communication unit 72 ... Command unit 81 ... Information terminal device

Claims (11)

A portable radiation measuring device,
Based on the measurement means to measure the radiation dose of the user wearing the radiation measurement device or the user's surrounding environment and the time series data of the radiation dose measurement value, the radiation dose measurement value is accumulated at regular intervals. Create a data table that calculates the time cumulative exposure dose and shows the correspondence between the time information related to the measurement of radiation dose and the time cumulative exposure dose. If the time series data is missing, include this missing measurement An estimation unit that estimates the time cumulative exposure dose by referring to the data table, and a cumulative exposure dose obtained by accumulating the measurement values of the radiation dose in the past period using the time cumulative exposure dose estimated through the estimation unit. A radiation measuring apparatus comprising: a calculating means for calculating The radiation measurement apparatus according to claim 1,
With reference to the data table, a predicting means for predicting the cumulative value of the measured value of the radiation dose after the lapse of a predetermined time as the estimated cumulative exposure dose,
Display means for displaying the estimated cumulative exposure based on the output from the prediction means, wherein the display means can classify and display the estimated cumulative exposure in a plurality of grades. Radiation measurement device. An exposure management system comprising a portable radiation measurement device and a central monitoring device that outputs a command selected based on information output from the radiation measurement device to the radiation measurement device,
The radiation measurement device and the central monitoring device each include a wireless communication unit, and can wirelessly communicate with each other.
The radiation measuring device is a user wearing the radiation measuring device or measuring means for measuring the radiation dose in the surrounding environment of the user ;
Storage means for storing user information comprising at least one of the user's age, gender, and presence of pregnancy;
Setting means for setting a first predetermined value based on the user information;
Determination means for determining whether or not a measured value of radiation dose is equal to or greater than the first predetermined value;
Anticipation determination for determining whether or not a radiation dose greater than or equal to the first predetermined value is expected to be measured when the measurement value of the radiation dose is determined to be less than the first predetermined value through the determination means Means and
When the determination unit determines that the measured value of the radiation dose is equal to or greater than the first predetermined value, or when it is predicted that the radiation dose equal to or greater than the first predetermined value will be measured When being done, the first radio signal requesting a command including the user information and the measurement value of the radiation dose is transmitted to the central monitoring device,
The central monitoring apparatus transmits a command set based on information included in the first radio signal to the radiation measurement apparatus. The exposure management system according to claim 3,
When the central monitoring device receives the one radio signal, the central monitoring device transmits a waiting time set according to the user information and the measurement value to the radiation measurement device,
The radiation measurement apparatus, when receiving the standby time, prohibits wireless communication with the central monitoring apparatus until the standby time elapses. An exposure management system comprising a portable radiation measurement device and a central monitoring device that outputs a command selected based on information output from the radiation measurement device to the radiation measurement device,
The radiation measurement device and the central monitoring device each include a wireless communication unit, and can wirelessly communicate with each other.
The radiation measuring device is a user wearing the radiation measuring device or measuring means for measuring the radiation dose in the surrounding environment of the user ;
Storage means for storing user information comprising at least one of the user's age, gender, and presence of pregnancy;
A calculation means for calculating a cumulative exposure dose by accumulating the measurement values of the radiation dose in the past period;
Setting means for setting a second predetermined value based on the user information,
When the cumulative exposure is greater than or equal to the second predetermined value, a second wireless signal that requests the command including the user information and the cumulative exposure is transmitted to the central monitoring device,
The central monitoring apparatus transmits an instruction set based on information included in the second radio signal to the radiation measurement apparatus. The exposure management system according to claim 5,
The radiation measuring apparatus includes a predicting unit that predicts the cumulative exposure dose after a predetermined time has elapsed as an estimated cumulative exposure dose,
The setting means sets a third predetermined value based on the user information,
When the estimated cumulative exposure is greater than or equal to a third predetermined value, a third wireless signal requesting a command including the user information and the estimated cumulative exposure of the radiation dose is transmitted to the central monitoring device,
The central monitoring apparatus transmits an instruction set based on information included in the third radio signal to the radiation measurement apparatus. The exposure management system according to claim 5 or 6,
When the central monitoring device receives the second radio signal or the third radio signal, the central monitoring device transmits a waiting time set according to the user information and the measurement value to the radiation measurement device,
The radiation measurement apparatus, when receiving the standby time, prohibits wireless communication with the central monitoring apparatus until the standby time elapses. It is an exposure management system as described in any one of Claims 3-7,
The central monitoring device can show the measured value of the radiation dose transmitted from the radiation measurement device and at least one of the cumulative exposure dose and the estimated cumulative exposure dose on a map together with the current position of the radiation measurement device. An exposure management system characterized by A radiation management system comprising a portable radiation measurement device, and the radiation measurement device configured independently and having a portable simple radiation detector,
The radiation measurement device and the simple radiation detector each include a short-range wireless communication unit, and can perform short-range wireless communication with each other,
The simple radiation detector includes a detection unit that detects radiation of a user wearing the radiation measurement device or a surrounding environment of the user, and a counting unit that counts a signal output from the detection unit. When the counting result output from the counting unit is greater than or equal to a predetermined threshold, the radiation management system is notified via the short-range wireless communication unit. The radiation management system according to claim 9,
The radiation measurement apparatus stores a detection unit that detects radiation, a counting unit that counts a signal output from the detection unit, and a conversion constant for converting a counting result output from the counting unit into a measurement value. And a measurement unit configured to include a calculation unit that calculates a measurement value of the radiation dose based on an output from the counting unit. A multi-item monitoring system capable of monitoring at least one of heart failure and respiratory failure and radiation dose,
A monitoring unit that monitors the blood oxygen saturation level of the user at a predetermined interval, and the user when it is detected that the blood oxygen saturation level is below a predetermined threshold based on an output from the monitoring unit. Start measuring blood oxygen saturation, body temperature, pulse rate, blood pressure, respiratory rate, and radiation dose of any one of these blood oxygen saturation, body temperature, pulse rate, blood pressure, respiratory rate, and radiation dose When one is not in a predetermined area, a portable monitoring device configured to include a determination unit that executes an abnormality determination process and a current position acquisition unit that acquires a current position;
An information terminal capable of communicating with the portable monitoring device by short-range wireless communication and capable of communicating with a contact organization,
When the abnormality determination process is executed, the information terminal sends the user's blood oxygen concentration, body temperature, pulse rate, blood pressure, respiratory rate, radiation dose, and user's current location to the contact organization. Is what
The determination unit, even when the radiation dose is in the region defined in advance, e Bei expected determination means for determining whether the amount of radiation that is outside the region is expected to be measured,
The multi-purpose monitoring system , wherein the portable monitoring device measures radiation of a user wearing the portable monitoring device or a surrounding environment of the user.

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