JP2019118628A - Human body monitoring system by micro wave doppler sensor - Google Patents

Abstract

[Problem] Eliminate unnecessary time for doctors and nurses to go to medical examination and treatment when a hospitalized patient leaves the room and is absent. In addition, we will promptly detect patients who have become abnormal in the toilet room of the hospital. Furthermore, early detection of guests who became abnormal condition in the bath and toilet room of the business hotel.
SOLUTION: In a system using biological information of a human body using a microwave Doppler sensor, a Doppler frequency corresponding to an operation speed of a detection signal of body movement, respiration and heart rate of a patient detected by the microwave Doppler sensor is detected. At the same time, the detection of the Doppler frequency is monitored, and when a predetermined condition is detected, the communication means plugs in the patient management system by the communication network already built in the hospital and the computer introduced already. It was made for the patient to display in real time the presence or absence of a bed, and the presence or absence of a bed on the terminal display of this patient management system.
[Selected figure] Figure 1

Description

  The present invention relates to a system for monitoring a human body in a personal space such as a hospital bed or toilet private room or a business hotel toilet / bathroom by a microwave Doppler sensor.

  In recent years, many systems have been proposed to monitor the biological information of hospital inpatients and business hotel guests using a microwave Doppler sensor. The microwave Doppler sensor irradiates microwaves toward the human body and receives and measures the reflected wave from the human body, thereby measuring the frequency of the transmitted wave and the reflected wave received by the Doppler effect due to the movement of the human body. A difference arises, and it is possible to detect body movement, respiration, heart rate etc. by comparing this difference.

  For example, the nurse call system disclosed in JP 2012-205770 A (Patent Document 1) reliably detects a patient's heartbeat in a non-contact state with a Doppler sensor placed at the bottom of a bed, and moves during movement measurement. If the heart rate is not detected after the Doppler sensor detects abnormal data because of a problem etc., it is judged that the patient has left the bed and an alert is sent to the nurse call master unit, and the patient's hemorrhoids are taken early To detect.

  In addition, the non-contact getting-out management system of utility model registration 3202674 (patent document 2) monitors vital information such as pulse and respiration of the care recipient etc. with a Doppler sensor, and requires nursing care using an image sensor. By monitoring the image of the person's position, movement, etc., it is possible to manage the caretaker's leaving state collectively.

  In addition, as described in the background art of the related art of the biometric information detection system built-in lamp by the microwave sensor of Japanese Patent Application Laid-Open No. 2013-92512 (patent document 3), a toilet and a bathroom of an accommodation facility such as a business hotel The invention was made in view of the sudden death of middle-aged and elderly people while taking a bath, and detects the presence of the human body with a microwave sensor, as well as detecting and monitoring body movement, respiration and heart rate, any of respiration and heart beat. When either or both of them are not detected for a predetermined time, an alarm is issued to the outside by the notification means to enable early lifesaving treatment.

JP 2012-205770 A Utility model registration No. 3202674 JP, 2013-92512, A

  First of all, the issues in the hospital ward of a hospital will be described. In the inpatient ward, doctors and nurses visit beds for examination and treatment of patients regardless of whether they are in a single room or multiple beds, but in the case of patients who can leave the bed on their own, they leave the bed for reasons such as change of mind and toilets. Are often absent. This situation is an immediate problem for doctors and nurses because they are extremely busy and lack of human resources, and for doctors and nurses, it spends a lot of wasted time leading to a decline in work efficiency.

  The system for monitoring biological information of inpatients using microwave Doppler sensors of Patent Documents 1 and 2 is particularly close to a bed in a multi-bed room divided by curtains such as a private room, a quadruple room, and a quadruple room. It is a fact that the Doppler sensor misdetects the movement of a visitee visiting a hospitalized patient and can not obtain the patient's biological information correctly. Further, in Patent Document 2, the place where the Doppler sensor is installed in the paragraph number 0028 of the publication is basically a private room, and in the multi-floor room, the bed leaving states of a plurality of subjects are managed by the plurality of Doppler sensors. In this case, transmission waves and reception waves of the Doppler sensors interfere with each other, and accurate biological information of individual subjects can not be obtained. It can also be seen that As described above, it is an issue to remove the noise of visiting guests and to reliably detect the biological information of only the hospitalized patient regardless of the single room or the multi-bed room.

  Second, I will describe the problems in the private toilet room of the hospital. A private room in the toilet of the hospital is provided with a notification button to be pressed when an abnormality occurs such as a deterioration in physical condition, and the nurse station is notified when the button is pressed. However, in the case where the patient in use is fainting soon after pressing the button, it is impossible to press the button despite the abnormal condition. For this reason, if discovery is delayed, it may be life-threatening, so early detection of the situation where the private bathroom is used for a long time has become a problem.

  In addition, it is easy to detect the presence or absence of a patient who uses a private room by using a microwave Doppler sensor in the private room of the toilet in the hospital, but in particular the private room of the shared toilet is frequently used as a substitute In the conventional system, the biological information of the human body is constantly detected, and it may be erroneously judged that one patient uses for a long time.

  Third, I will talk about issues in toilets and bathrooms such as business hotels. Although the increase in the sudden death of middle-aged and elderly people while bathing in a toilet or bathroom of a hotel or other accommodation is also described in Patent Document 3, when using a business hotel on a business trip, etc. Because of different environmental changes, stress such as drinking, fatigue and various factors, the probability of causing stroke or myocardial infarction etc. in the bathroom will increase. Should a guest die and be found, the room would become unusable for several days, which would have a great impact on the business of the business hotel, causing the guest to change the bathroom or toilet The problem is to find out early and avoid the worst.

  In addition, a lamp with a built-in biological information detection system by a microwave sensor of Patent Document 3 includes communication means in the lamp, and the communication means is a power line carrier communication (PLC), a weak radio wave which does not need to receive a license of a radio station. It is described that an alarm is issued to the outside by using wireless communication (for specific low power wireless, for radio control, wireless microphone, etc., Bluetooth (registered trademark)).

Then, the present invention solves the above-mentioned subject,
(1) Determine the patient's leaving and landing of the hospitalized ward surely (2) Determine the long-term use in the toilet of the hospital surely (3) Early detection of the strangeness of the guests in the bathroom of the business hotel It is an object of the present invention to provide a system for monitoring the presence or absence of a human body by means of a microwave Doppler sensor capable of

  According to claim 1 of the present invention, in a system using biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the microwave Doppler The Doppler frequency corresponding to the motion speed of the motion signal of the patient's body motion, respiration and heart beat detected by the sensor is detected, and the detection of the Doppler frequency is monitored, and when a predetermined condition is detected, the hospital By plugging in a patient management system based on a communication network already built in the computer and a computer that has already been installed, the patient can display in real time on the terminal display of the patient management system the presence or absence of bed landing and bed leaving the bed It is solved by having done it.

According to claim 2 of the present invention, the above problem is
In a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the patient's motion, respiration and heart rate detected by the microwave Doppler sensor. The analog signal is A / D converted and processed as a digital signal by phase detection synthesis based on I (in-phase component of waveform) and Q (quadrature-phase component) to output a static value and a body motion value. When a predetermined condition is detected using motion values, the communication means plugs in a patient management system with a communication network already built in the hospital and a computer installed already in the hospital, and the patient enters the bed This is solved by displaying in real time the terminal display of the patient management system about the presence / absence status of landing / leaving.

  According to a third aspect of the present invention, in a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body includes a microwave Doppler sensor, a control circuit, and a communication unit. By processing the analog signal A / D and processing it as a digital signal by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature-phase component) signals of patient motion, respiration and heartbeat detected by sensor A static value and a body motion value are output, and a static value is in a range of 0.2 to 0.3 Hz, and a body motion value is in a range of 1 to 2 Hz. Both the static value and the body motion value are within a range When it becomes, it is determined that the patient has landed in the bed, and when either one of the static value and the body movement value is out of the range, it is determined that the patient has gone out of bed, and by communication means Already built in the hospital By plugging in a patient management system based on a communication network and a computer which has already been installed, the patient can display in real time on the terminal display of the patient management system the presence or absence of bed landing / leaving in the bed. Resolved.

  According to a fourth aspect of the present invention, in a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the microwave Doppler By processing the analog signal A / D and processing it as a digital signal by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature-phase component) signals of patient motion, respiration and heartbeat detected by sensor A static value and a body motion value are output, and a static value is in a range of 0.2 to 0.3 Hz, and a body motion value is in a range of 1 to 2 Hz. Both the static value and the body motion value are within a range When it is detected, it is determined that the patient is seated in the bed, and even if a motion other than the patient is detected, it is canceled as noise and resolved by maintaining the determination that the patient is seated in the bed. Ru.

  According to claim 5 of the present invention, the communication means is any one of wired LAN, telephone modular, wired connection of nurse call if wired, wireless LAN if wireless and wireless LAN, near field wireless communication, IoT network if wireless. It is solved by being either.

  According to Claim 6 of the present invention, the task can set an arbitrary occupancy time in the main body, or can select and set a plurality of set occupancy times, and the patient enters the private toilet room and the main body is the patient's When entering the room is judged, after the set room time has elapsed, the communication means will plug in the patient management system with the communication network already built in the hospital and the computer already installed in the hospital, and the patient will be in the toilet room It is resolved by displaying in real time on the terminal display of the patient management system that the patient is staying at the time.

  According to the seventh aspect of the present invention, the magnet switch is connected to the main body and the magnet switch is installed at the door opening / closing part of the toilet single room, and any room time can be set in the main body When the patient enters the toilet room and the main body determines the patient's entry, the communication means has already been established in the hospital by the communication means after the lapse of the set room time. By plugging in a patient management system based on a network and a computer that has already been installed, it is displayed in real time on the terminal display of the patient management system that the patient has been in the private bathroom for a long time, and set When a patient who has been in the private toilet room before leaving the room has left, a magnet switch installed at the opening and closing part of the private toilet room Occupancy time by on-off signal is resolved by being reset.

  According to claim 8 of the present invention, in a system using biological information of a human body using a microwave Doppler sensor according to claim 8, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the microwave Doppler sensor While detecting the Doppler frequency corresponding to the motion speed of the detection signal of the guest's movement detected in the room, breathing, and heart rate, the detection of the Doppler frequency is monitored, and when a predetermined condition is detected, the communication means A terminal of the guest management system when an abnormality occurs in a guest room by plugging in a guest management system based on a communication network already built in a hotel and a computer already installed. It is solved by displaying an alarm in real time on the display.

  According to a ninth aspect of the present invention, the above-mentioned problem is solved by switching the plurality of channels to enable oscillation of the oscillation frequency of the microwave Doppler sensor of the main body.

According to claim 1 of the present invention,
In a system utilizing biological information of the human body by using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the patient's body motion, respiration and heart rate detected by the microwave Doppler sensor. While detecting the Doppler frequency corresponding to the operation speed of the detection signal and monitoring the detection of the Doppler frequency, when a predetermined condition is detected, the communication network and communication network already built in the hospital are installed by the communication means. By plugging in the current computerized patient management system so that the patient can display the status of arrival and departure on the bed in real time on the terminal display of the patient management system, the patient's bed attachment can be seen at a glance. The presence or absence of floor and bed can be determined in real time, and doctors and nurses If you visit a patient looking at the stomach after confirming that you have landed on the bed, it has become possible to efficiently perform medical practice without having to spend unnecessary time.

  According to a second aspect of the present invention, in a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the microwave Doppler sensor detects And A / D convert the analog signal into a digital signal by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature-phase component) signals of body motion, respiration and heart rate of the patient. Patient management system with communication network already built in the hospital and computer already installed in the hospital by communication means, outputting body motion values and when predetermined conditions are detected using static values and body motion values To allow the patient to arrive and leave the bed in real time on the terminal display of the patient management system Therefore, even if the movement of the guest in the next bed is detected in the narrow multi-bed room divided by the curtains, it cancels as noise, and the false situation of the patient's bed landing / leaving state is false. There is no determination, and it is possible to determine in real time whether the patient's bed landing / leaving status is present or not at a glance, and the doctor or nurse sees the display and confirms that the patient has landed in the bed. It made it possible to conduct medical services efficiently without spending wasted time by visiting.

  According to a third aspect of the present invention, in a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the microwave Doppler sensor detects And A / D convert the analog signal into a digital signal by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature-phase component) signals of body motion, respiration and heart rate of the patient. Body motion value is output, and the stillness value is in the range of 0.2 to 0.3 Hz, and the body movement value is in the range of 1 to 2 Hz when both the still value and the body movement value fall within the range It is determined that the patient has landed in the bed, and it is determined that the patient has left the bed if either one of the static value and the body movement value is out of the range, and communication is made in the hospital. Communication already established By plugging in the patient management system based on the network and computer already introduced, the patient can display the presence or absence of the bed in the bed in real time on the terminal display of the patient management system. There is no misjudgment of the presence or absence of bed landing / leaving, and the presence / absence status of the patient's bed landing / leaving can be determined in real time at a glance, and the doctor or nurse sees the display and the patient goes to bed It is possible to conduct medical work efficiently without spending wasted time, if you visit after confirming that you are seated in the hospital.

  According to a fourth aspect of the present invention, in a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the microwave Doppler sensor detects And A / D convert the analog signal into a digital signal by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature-phase component) signals of body motion, respiration and heart rate of the patient. Body motion value is output, and the stillness value is in the range of 0.2 to 0.3 Hz, and the body movement value is in the range of 1 to 2 Hz when both the still value and the body movement value fall within the range In this case, it was determined that the patient was seated in the bed, and even if motions other than the patient were detected, they were canceled as noise, and the patient was kept in the determination of being seated in the bed. bed There is no misjudgment of the presence / absence status of landing / leaving, and the presence / absence status of the patient's bed landing / leaving can be determined in real time at a glance, and the doctor or nurse sees the display and the patient arrives at the bed It was possible to carry out medical services efficiently without spending wasted time by confirming that they were on the floor before visiting.

  According to claim 5 of the present invention, the communication means is any of wired LAN, telephone modular, wired connection of nurse call if wired, and wireless LAN, near field wireless communication, IoT network if wireless. As a result, regardless of the type of communication network already built in the hospital, it becomes possible to use the human body presence monitoring system by the microwave Doppler sensor of the present invention.

  According to the sixth aspect of the present invention, an arbitrary occupancy time can be set in the main body, or a plurality of set occupancy times can be selected and set, and the patient enters the private toilet room and the main body determines the patient's admission. When the patient's room has been set up, they are plugged in to the patient management system based on the communication network already built in the hospital and the computer introduced by the communication means by the communication means, and the patient stays in the private bathroom for a long time. By displaying an alarm on the terminal display of the patient management system in real time on the display of the patient management system, it is determined that the patient is staying for a long time in the private room of the toilet of the hospital, and the patient is unable to move due to faintness etc. It was possible to discover early.

  According to the seventh aspect of the present invention, a magnet switch is connected to the main body and the magnet switch is installed at the door opening / closing portion of the toilet single room, and an arbitrary occupancy time can be set to the main body, or a plurality of settings When the patient enters the private toilet room and the main body determines the entrance of the patient, the communication network already established in the hospital by communication means after the lapse of the set occupancy time By plugging in a patient management system based on a computer that has already been introduced, it is displayed in real time on the terminal display of the patient management system that the patient has been in the private toilet room for a long time, When the patient who had been in the private toilet room before the lapse of time left, the magnet switch installed at the opening and closing part of the private toilet room was turned on. By resetting the occupancy time by a signal, it is displayed in real time on the terminal display of the patient management system that the patient is staying in the private toilet room for a long time, whereby the patient's private room in the hospital toilet room is displayed. It enables early detection of abnormal conditions such as patients becoming immobile due to fainting or the like without falsely determining occupancy for a long time.

  According to the eighth aspect of the present invention, in a system using biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and is detected by the microwave Doppler sensor In addition to detecting the Doppler frequency corresponding to the operation speed of the motion signal of the guest, the movement detection and the heartbeat of the guest, the detection of the Doppler frequency is monitored, and when a predetermined condition is detected, the communication means The customer management system with the communication network already built in and the guest management system by the computer which has already been installed is plugged in, and when an abnormality occurs in the bathroom and toilet room, the terminal display of the guest management system Since the alarm is displayed in real time, the guest is bathing, due to some disease When you are unconscious and your breathing and heart rate stop, you may find an abnormal condition such as your mind falling into a bath due to tiredness or alcohol, and your breathing may stop. Made possible.

  According to the ninth aspect of the present invention, since the oscillation frequency of the microwave Doppler sensor of the body can be oscillated by switching a plurality of channels, there are a plurality of narrow multi-floored rooms separated by curtains and a plurality of separate rooms of toilets. Even if multiple units are installed, it is possible to reliably determine the patient's presence or absence and long-term use of a specific bed or a specific toilet room without interfering with each other's microwave Doppler sensors in multiple units. And

It is a general view of the presence-or-absence monitoring system of the human body by the microwave Doppler sensor of 1st Example. It is a figure which shows the example of a display on the display of a patient's landing / leaving condition. It is a block diagram of a main part. It is an explanatory view for detecting a predetermined condition which judges existence of a patient's arrival and departure. It is a front view showing a setting switch etc. of a main part. It is a general view of the surveillance system of the human body by the microwave Doppler sensor of a 2nd example. It is a figure which shows the example of a display on the display that a patient has stayed in the toilet for a long time. It is a front view showing a setting switch etc. of a main part. It is a general view of the presence-or-absence monitoring system of the human body by the microwave Doppler sensor of 3rd Example. It is a figure which shows the example of a display on a display when a visitor has produced an abnormality in a toilet and a bathroom. It is a wave form diagram of normal body movement, a heart beat, and respiration which were detected with a microwave sensor. It is a wave form diagram of abnormal body movement, a heart beat, and respiration which were detected with a microwave sensor.

Mode for carrying out the invention

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall view of a system for monitoring the presence or absence of a human body by a microwave Doppler sensor. In the present embodiment, the human body refers to a patient. The microwave Doppler sensor unit (1) (hereinafter referred to as the main body (1)) is a micro room from the top of the chest toward the patient's chest lying in bed, one for each bed, regardless of whether it is a single room or multibed room. It is installed on the wall of a hospital room to irradiate waves. Then, the motion, respiration and heart rate of the patient detected by the main body (1) are obtained by the communication network already established in the hospital and the computer already introduced by the communication means provided in the main body (1). Connect and plug in the patient management system and display in real time on the display (5) the presence or absence of the patient's arrival and departure for each bed.

  FIG. 2 is a view showing a display example of the presence / absence status of landing / leaving on the display (5). On the display (5), as an example, each room number on the fifth floor and the patient name of the bed in each room are displayed. As shown in the lower display example of FIG. 2, the identification of the patient's arrival, departure, or vacancy changes the color of the individual bed color or character in which the patient's name is displayed, or makes the blinking or lighting condition different. It is possible to determine in real time the presence or absence of the patient's landing on the bed or leaving the bed at a glance. If doctors and nurses see the display (5) and confirm that the patient is seated in the bed before visiting, it is possible to carry out medical work efficiently without spending unnecessary time. Become.

  The main body (1) is a microwave Doppler sensor unit, and is installed so as to irradiate microwaves from obliquely above toward the chest of the patient lying on the bed in the wall of the hospital room. As a result, the bed can be moved quickly and easily without moving the power source or the cable of the main body during movement of the bed, between rooms, at the time of treatment, etc.

  FIG. 3 is a block diagram of the main body (1). In addition, FIG. 3 shows a general block diagram for detecting body motion, respiration and heart rate of a human body by a microwave Doppler sensor, and is not limited to this configuration. As shown in FIG. 3, the main body (1) comprises a microwave Doppler sensor (2), a control circuit (3), and communication means (4).

  The microwave Doppler sensor (2) is configured by disposing on the substrate a microwave circuit including a microwave transmission / reception circuit and a transmission path, and detects a patient's body movement, respiration and heart rate, and a control circuit (3) Output the detection signal to In addition, since the oscillation frequency of the microwave of the microwave Doppler sensor (2) is configured to be switchable to a plurality of channels, it is when a plurality of main bodies (1) are installed in multiple floor rooms for individual beds. However, by setting the oscillation frequency of each of the plurality of main bodies (1) to different channels, false detection due to interference of the oscillation frequency is prevented, and even in a multi-bed room, the presence or absence of landing / leaving of each patient It becomes possible to make a reliable determination of no.

  The control circuit (3) comprises an amplification circuit (3a), a digital signal processor (3b), and a band pass filter (3c), and detects a patient's motion, respiration and heart rate detected by the microwave Doppler sensor (2) The Doppler frequency corresponding to the operation speed of the signal is monitored, and when a predetermined condition (described later) is detected, the presence or absence of the patient landing / leaving is determined, and the communication means (4) is It outputs a determination signal of the presence or absence of a bed. Note that the waveform diagram of the movement of the human body detected by the microwave Doppler sensor (2) is a waveform diagram of normal body movement, heartbeat and respiration detected by the microwave Doppler sensor (2) in FIG. It is expressed as a waveform diagram of abnormal motion, heart rate and respiration detected by the sensor (2).

  The communication means (4) is not particularly limited by wired or wireless communication, but the existing wireless LAN such as Wi-Fi (registered trademark) which has already been introduced in hospitals, near field wireless communication such as Bluetooth (registered trademark), SIGFOX A corresponding communication unit such as Wi-Fi (registered trademark) or Bluetooth (registered trademark) is provided to be connected to an in-hospital communication network such as an IoT network such as (registered trademark). Then, it is plugged into the existing patient management system (workstation, personal computer, etc.) already installed in the hospital, and the presence / absence information of the patient's landing / leaving is output, and the display of the terminal of the nurse station (5) In addition, the presence / absence status of the patient's landing / leaving is displayed in real time as shown in the example of FIG. 2 showing the display example of the presence / absence status of the landing / leaving on the display (5). When the communication means (4) is a wired connection, it is connected to a wired LAN, a telephone modular, a nurse call wiring, and the like.

  FIG. 4 is an explanatory diagram for detecting a predetermined condition for determining the presence or absence of the patient's landing / leaving. In the case of the configuration using a microwave Doppler sensor as shown in FIG. 3, it is easy to detect the motion, respiration and heart rate of the patient. However, in a multi-bed room such as a 2- or 4-person room, the individual beds are placed close to each other and separated by curtains, so movement, breathing and heartbeat of the visitors visiting the next bed And the patient in the specific bed monitored by the main unit (1) is actually going out of bed, and it is misjudged as landing in spite of absence, or landing Nevertheless, it is impossible to make a correct decision, such as detecting a large movement of the visitor or the like. Therefore, it is necessary to set predetermined conditions in order to reliably determine the presence / absence of landing / leaving of a specific patient monitored by the main body (1).

  As shown in FIG. 4, the analog signal is A / D converted by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature-phase component) of the patient's signal detected by the microwave Doppler sensor (2) Processing as a digital signal outputs a static value and a body movement value. The static value can be obtained by A / D converting the respiration value and the heartbeat value detected by the microwave Doppler sensor (2) and passing it through a low pass filter under the condition that the patient is at rest. Among the static values, the respiration value is set to 0.2 to 0.3 Hz, and the heart rate is set to 1 to 2 Hz as the determination condition. The body motion value is a large body motion detected when the patient lands on the bed, and the body motion value detected by the microwave Doppler sensor (2) is A / D converted and passed through a low pass filter. Can be obtained by The body movement value is set as a setting condition that is a respiration value upper limit of 0.3 Hz, which is a static value, and a value exceeding a heart rate upper limit of 2 Hz.

The conditions for determining the patient's arrival and departure are as follows.
(1) Judgment when the patient lands in the bed A large body movement value when the patient lands on the bed is detected (respiratory value upper limit 0.3 Hz, which is a static value, a value exceeding the heart rate upper limit 2 Hz), and then , When the static value (breathing value 0.2 to 0.3 Hz, heart rate 1 to 2 Hz) is detected.
(2) Judgment when leaving the bed from the landing state Detect a large body movement value when the patient leaves the bed (respiratory value upper limit 0.3 Hz which is a static value, a value exceeding the heart rate upper limit 2 Hz), and then When the resting value (breathing value 0.2 to 0.3 Hz, heart rate 1 to 2 Hz) disappears.
(3) Prevention of misjudgment when a large level of movement of a patient or visiter in the surrounding bed is detected A patient in the surrounding bed gets out of bed, and although it has been judged that the bed leaves If a large level of movement of the visitor is detected, it is determined that the user has left the bed, since the stationary value is not detected after that, and the determination of leaving is maintained. In addition, even if the patient has landed in the bed and the landing status has been determined, if a high level of movement of the patient or visitor in the surrounding bed is detected, the still value is continuously detected. Maintain a determination of landing.

  By setting the above conditions, it is possible to reliably prevent incorrect determination of the implantation due to detection of a large level of body movement of the patient and visiting guests in the surrounding bed, especially at the time of leaving the bed.

  FIG. 5 is a front view showing a setting switch etc. of the main body (1). In addition to the microwave Doppler sensor (2), a control circuit (3) and communication means (4) (not shown) are installed in the main body (1). And, a bed leaving time setting switch, a landing sensitivity setting switch, and an oscillation frequency channel switching switch (switch is abbreviated as SW in the figure) are provided. The bed leaving time setting switch can set whether it is determined that the patient leaves the bed when the stationary value and the body movement value are not detected for a set time after the patient leaves the bed. The bed leaving time setting switch is provided with 15 seconds, 1 minute, 5 minutes, and 10 minutes positions, and by setting to the desired position, the static value and the body movement value are set for each time after patient getting out of bed. When not detected, it is determined that the bed has left. The implantation sensitivity setting switch sets LOW, MEDIUM, and HIGH depending on the level of movement of the patient. By setting the sensitivity high for a patient with little movement and setting the sensitivity low for a patient with high movement, it is possible to more reliably determine landing / leaving. The oscillation frequency channel switching switch is a switch for switching the channel of the oscillation frequency of the microwave Doppler sensor (2). By setting so that the oscillation frequency channels of multiple bodies (1) installed in the same room of the multi-floor room do not have the same channel setting, interference between the oscillation frequencies of the bodies (1) is eliminated and false detection or It is possible to prevent a situation such as undetectable.

  A second embodiment of the present invention will be described with reference to the drawings. In this embodiment, an abnormal condition such as a patient being unable to move due to fainting or the like is detected at an early stage by determining the long-time occupancy of the patient in the private room of the toilet of the hospital. Monitoring system. In the present embodiment, the circuit configuration of the system, the block diagram, the communication means, the predetermined condition for determining the presence or absence of the patient, and the like are the same as those in the first embodiment, and thus the description thereof is omitted.

  FIG. 6 is an overall view of a system for monitoring the presence or absence of a human body by the microwave Doppler sensor according to the second embodiment. In the present embodiment, the human body refers to a patient. As shown in FIG. 6, the microwave Doppler sensor unit (11) (hereinafter referred to as the main body (11)) can irradiate microwaves obliquely from the upper side toward a patient who uses a private room of the hospital's toilet It will be installed on the wall of the private bathroom so that it can be done. The motion, respiration and heart rate of the patient detected by the main body (11) are plugged into the existing patient management system through the existing hospital communication network by the communication means (4) provided in the main body (11), and the patient It outputs that it has been in the toilet for a long time, and displays it on the display (5) of the terminal of the nurse station.

  FIG. 7 is a view showing a display example on the display (5) that the patient has been in the toilet for a long time. The alarm display part was provided in the space under the display of each room number etc. shown in FIG. On the display (5), as an example of the alarm display, the notification time was displayed as "5th floor east toilet room 1 abnormality". Since this alarm is blinked at the same time as the alarm is sounded, it is possible to detect a patient's abnormality early and carry out a life-saving treatment by rushing to the toilet where the abnormality has been detected by surely detecting the alarm.

  FIG. 8 is a front view showing a setting switch etc. of the main body (11). In addition to the microwave Doppler sensor (2), a control circuit (3) and communication means (4) (not shown) are installed in the main body (11). The room time setting switch, the static value setting switch, the output setting switch, the oscillation frequency channel switching switch (switch is abbreviated as SW in the drawing), and the magnet switch (6) are connected to the external input terminal.

  The room time setting switch is provided with positions of 0.5 minutes, 5 minutes, 10 minutes, and 20 minutes, and by setting them to the desired positions, it is determined that the patient is present in the private toilet room, after the start of each determination. After the time set to the position has elapsed, an alarm signal is output and an alarm is displayed on the display (5) of the nurse station.

  In addition, it is necessary to keep in mind that the toilet private room in the hospital should be used frequently with multiple patients being replaced instead of turning in the gaps, and in the case of the toilet private room usage pattern shown below, false reports may occur. It is necessary to prevent this because it will occur.

  We will explain the usage pattern of the toilet single room where false alarms occur. For example, in a state where the occupancy time setting switch is set to 10 minutes, a description will be given using a pattern in which a plurality of patients continuously use a toilet single room in a short time. First, when the patient A enters the private toilet room, the main body (11) detects a large body movement or the like accompanying the entry, and then detects breathing and heartbeat, and determines that the patient A is in the room and is in the room. At this stage, counting for 10 minutes set by the occupancy time setting switch is started. Then, the patient A enters and leaves the room 6 minutes after the start of counting in the room, and immediately after that, when the patient B enters the same toilet room, the main body (11) performs a large body movement associated with the patient A leaving. It will detect and will detect the large body movement accompanying patient B's entrance continuously. In addition, since the respiration and heartbeat of the patient B are to be detected after that, the erroneous determination is made that the patient A continues to be in the room despite replacement with the patient B. In this case, 10 minutes set by the occupancy time setting switch elapses in just 4 minutes after the patient B enters the room, the main body (11) outputs an alarm signal, and the alarm display is displayed on the nurse station display (5). It will be done. Due to this alarm, the nurse rushes to the toilet room, but the patient B notices that it was a false alarm since there was no abnormality in the patient B in the first place.

  In order to prevent this, the terminal of the magnet switch (6) is connected to the external input terminal of the main body (11), the magnet switch (6) is installed at the opening and closing part of the door of the toilet room, and the magnet is opened and closed When the switch (6) is turned on and off, it is detected that the patient A has opened the door in order to leave the toilet room, and the room is switched to the absence judgment. As a result, even if patient B enters the room immediately after leaving patient A, since it is once determined to be absent, counting for 10 minutes will be started again from the time of patient B entering, and false notification can be prevented. It is

The conditions which determine the patient presence or absence in the several toilet single room in a present Example are demonstrated. Note that this is basically the same as the first embodiment.
(1) Determination that a patient has entered the private toilet room A large body movement value when the patient enters the private toilet room is detected (respiratory value upper limit 0.3 Hz which is a static value, a value exceeding a heart rate upper limit 2 Hz), After that, when a static value (breathing value 0.2 to 0.3 Hz, heart rate 1 to 2 Hz) is detected.
(2) Judgment that the patient has left the private toilet room A large body movement value when the patient leaves the private toilet room is detected (respiratory value upper limit 0.3 Hz which is a static value, a value exceeding the heart rate upper limit 2 Hz), Then, when the resting value (breathing value 0.2 to 0.3 Hz, heart rate 1 to 2 Hz) disappears.
(3) Prevention of false determination when detecting a large level of movement of a patient in the close room private room or a surrounding patient Despite the absence of the patient in the private room and the judgment of absence, the close room toilet If a large level of movement of the patient in the private room or the surrounding area is detected, the absence determination is maintained because the static value is not detected after that and the room is not entered. In addition, even if the patient enters the private toilet room and it is determined to be in the room, if a large level of movement of the patient in the adjacent private room or nearby is detected, the still value is continuously detected. As a result, the judgment of occupancy is maintained. By setting the above conditions, it is possible to reliably prevent an erroneous determination of the occupancy, even if a large level of movement of the patient in the close room or in the close room is detected.

  A third embodiment of the present invention will be described with reference to the drawings. The present embodiment is intended to detect an abnormal condition of a guest at a toilet / bathroom of a business hotel at an early stage, and is a system for monitoring a human body in a personal space as in the first and second embodiments. In the present embodiment, the circuit configuration of the system, the block diagram, the communication means, the predetermined condition for determining the presence or absence of the patient, and the like are the same as those of the first and second embodiments, and thus the description thereof is omitted.

  FIG. 9 is an overall view of a human body presence / absence monitoring system by a microwave Doppler sensor according to a third embodiment. In the present embodiment, the human body indicates a guest. The microwave Doppler sensor unit (111) (hereinafter referred to as the main body (111)) can irradiate microwaves from diagonally above towards the guests sitting in the bath or in the bathroom of the bath and toilet room of the business hotel Installed on the wall of the bathroom and toilet room. Since the bath and toilet room of the business hotel is the minimum necessary space, it can be detected with one main body (111) even if the guest is bathing in the bath or sitting in the toilet. The main body (111) has a waterproof property in consideration of installation in a bathroom / bathroom, and the body (1) of the first embodiment is used as it is as a human body by a microwave Doppler sensor for the bathroom / bathroom of a business hotel. The presence or absence monitoring system of And the movement, breathing and heart rate of the guest in the bathroom, which is detected by the main body (111), are transmitted through the existing in-hotel communication network by the communication means (4) provided in the main body (111). Plug in the guest management system, output an abnormality in the guest room and bathroom, and display it on the front terminal display (5).

  FIG. 10 is a view showing a display example on the display (5) when a guest has made a mistake in the toilet and bathroom. As shown in FIG. 10, an alarm is displayed in the space below the list in which each room number, guest's name, etc. are displayed. On the display (5), as an example of the alarm display, the alarm time was displayed as "room 306 abnormal". Since this display is an alarm, blink the display part at the same time and sound an alarm at the same time to make sure that there is an abnormality in the room where there is an abnormality and discover the abnormality of the guest and take measures such as life-saving treatment. can do.

  FIG. 11 is a waveform chart of normal body movement, heart rate and respiration detected by the microwave sensor (2). Body movement slightly moves even when the guest is quietly immersed in the bathtub Is detected by Breathing usually detects the movement of the chest and abdomen, but if the chest and abdomen are all immersed in the bath water, it is detected by a bath surface that rises and falls by breathing. The heartbeat penetrates the skin of the human body to detect the heartbeat, but even if the chest is immersed in the bath water, the microwave can permeate the hot water to detect the heartbeat of the human body .

  FIG. 12 is a waveform chart of abnormal body movement, heartbeat, and respiration detected by the microwave sensor (2), and shows that body movement, respiration, and heartbeat stop on the way. As described above, when the abnormal state as shown in FIG. 12 is detected by the microwave sensor (2), the control unit (3) outputs an alarm signal by the communication means (4), and passes through the existing in-hotel communication network Plug in the existing guest management system and display an alarm on the front terminal display (5). When such an abnormality occurs in a guest, the survival rate changes depending on how early they are detected and rescued. When you are unconscious and take a breath or heart beat due to some kind of illness while taking a bath, or when you fall asleep due to fatigue or alcohol, your face may enter the hot water of the bathtub and stare to death. As it is supposed, it is possible to detect the abnormality in the bath and the toilet of the guest at an early stage and carry out the lifesaving treatment.

  As described above, the present invention is a system for monitoring a human body in a personal space such as a hospital bed or toilet private room, a toilet / bathroom of a business hotel, etc. by a microwave Doppler sensor, It can be applied to various facilities such as corporate dormitories and nursing homes.

DESCRIPTION OF SYMBOLS 1 main body 11 main body 111 main body 2 microwave Doppler sensor 3 control circuit 3a amplifier circuit 3b digital signal processor 3c band pass filter 4 communication means 5 display 6 magnet switch

Claims (9)

  In a system utilizing biological information of the human body by using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the patient's body motion, respiration and heart rate detected by the microwave Doppler sensor. While detecting the Doppler frequency corresponding to the operation speed of the detection signal and monitoring the detection of the Doppler frequency, when a predetermined condition is detected, the communication network and communication network already built in the hospital are installed by the communication means. A microwave Doppler sensor characterized in that it is plugged into a computer management system based on a computer so that the presence or absence of the patient getting on / off on the bed can be displayed on the terminal display of the patient management system in real time. Human body monitoring system.   In a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the patient's motion, respiration and heart rate detected by the microwave Doppler sensor. The analog signal is A / D converted and processed as a digital signal by phase detection synthesis based on I (in-phase component of waveform) and Q (quadrature-phase component) to output a static value and a body motion value. When a predetermined condition is detected using motion values, the communication means plugs in a patient management system with a communication network already built in the hospital and a computer installed already in the hospital, and the patient enters the bed A microphone characterized in that the presence / absence status of landing / leaving is displayed on the terminal display of the patient management system in real time. Human body monitoring system according to wave Doppler sensor.   In a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the patient's motion, respiration and heart rate detected by the microwave Doppler sensor. By detecting the signal A / D and processing it as a digital signal by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature phase component), a static value and a motion value are output, and the static value is The patient's landing on the bed when the values of both the static value and the motion value fall within the range of 0.2 to 0.3 Hz, the motion value is in the range of 1 to 2 Hz. If it is determined that one of the static value and the motion value is out of the range, it is determined that the user has left the bed, and the communication network already built in the hospital by the communication means and the system have already been installed. The A microwave Doppler sensor characterized in that it is plugged into a computer management system based on a computer so that the presence or absence of the patient getting on / off on the bed can be displayed on the terminal display of the patient management system in real time. Human body monitoring system.   In a system for monitoring biological information of a human body using a microwave Doppler sensor, the main body comprises a microwave Doppler sensor, a control circuit, and communication means, and the patient's motion, respiration and heart rate detected by the microwave Doppler sensor. By detecting the signal A / D and processing it as a digital signal by phase detection synthesis using I (in-phase component of waveform) and Q (quadrature phase component), a static value and a motion value are output, and the static value is The patient's landing on the bed when the values of both the static value and the motion value fall within the range of 0.2 to 0.3 Hz, the motion value is in the range of 1 to 2 Hz. 4. The apparatus according to any one of claims 1 to 3, characterized in that it is determined that there is motion, and even if a body movement other than the patient is detected, it is canceled as noise and the determination that the patient is seated in the bed is maintained. Ma Body monitoring system according to black wave Doppler sensor.   The communication means is any one of wired LAN, telephone modular, wired connection of nurse call if wired, and wireless LAN, near field wireless communication, IoT network if wireless. A human body monitoring system by the microwave Doppler sensor according to any one of claims 1 to 4.   Arbitrary occupancy time can be set to the main body, or multiple set occupancy times can be selected and set, and when the patient enters the private toilet room and the main body determines entry of the patient, after the set occupancy time elapses The patient management system that the patient is staying in the private room for a long time by plugging in the communication system already built in the hospital and the patient management system by the computer already introduced by the communication means The human body monitoring system by the microwave Doppler sensor according to any one of claims 1 to 5, wherein an alarm is displayed on the terminal display of (1) in real time.   A magnet switch is connected to the main unit, and the magnet switch is installed in the door opening and closing part of the toilet single room, and an optional stay time can be set to the main body, or a plurality of set stay times can be selected and set. When the patient enters the private bathroom and the main body determines the patient's entry, the patient management system based on the communication network and the computer already installed in the hospital by the communication means after the set occupancy time has elapsed Plug-in to display in real time on the terminal display of the patient management system that the patient is staying in the private bathroom for a long time on the other hand, while staying in the private toilet room before the set occupancy time elapses When the patient who was moving out of the room, the on-time is reset by the on / off signal of the magnet switch installed at the opening and closing part of the private bathroom. Body monitoring system according to the microwave Doppler sensor according to claim 1 to claim 6, characterized in that it is Tsu bets.   In a system using biological information of a human body by using a microwave Doppler sensor, the main body is composed of a microwave Doppler sensor, a control circuit, and communication means, and body movement, respiration and heart rate of a guest detected by the microwave Doppler sensor While detecting the Doppler frequency corresponding to the operation speed of the detection signal and monitoring the detection of the Doppler frequency, the communication means already constructed in the business hotel by the communication means when the predetermined condition is detected It is plugged in to the guest management system by the introduced computer, and when the guest has an abnormality in the bathroom, the alarm display on the terminal display of the guest management system is made in real time The microwave dot according to any one of claims 1 to 7, which is characterized by Human body monitoring system according to Rasensa.   The oscillation frequency of the microwave Doppler sensor of the main body is switched by switching a plurality of channels so that oscillation can be performed. Item 9. A human body monitoring system by the microwave Doppler sensor according to any one of items 8.