JP2004234061A - Personal danger warning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an individually adapted danger warning system. <P>SOLUTION: This system is provided with storage means 7 for storing predetermined individual danger areas 105a, 105b and 105c, a person's location detecting means 21 for detecting the location of a person, an individual identifying means 5 for identifying a predetermined individual, a warning issuing means 8 for issuing a warning and a control means 1 for specifying the predetermined person identified by the individual identifying means 5 and a person whose location is detected by the person's location detecting means 21, and for issuing a warning by the warning issuing means 8 when the identified predetermined person intrudes the danger areas 105, 105b and 105c corresponding to the predetermined individuals stored in the storage means 1. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a danger warning system, and more particularly to a danger warning system capable of issuing a danger warning individually.
[0002]
[Prior art]
In recent years, nursing care for the elderly has been receiving attention in the context of the advent of an aging society. In particular, nursing care for patients with dementia and elderly people who wander is very important, and various techniques have been proposed. It is considered that the means of tracking the behavior of these elderly people and reporting them to the person and the outside are very important from the viewpoint of nursing care. In addition, a safe life can be obtained by detecting the behavior of not only elderly people but also those who need monitoring, such as infants. It is very important to detect "who" and "where" in grasping the behavior of a person and issuing an alert in a dangerous case. For this purpose, it is necessary to identify an individual and detect the position of the identified individual in the room. Here, when it is not possible to simultaneously perform the identification of the individual and the detection of the position of the person, it is necessary to identify the identified person and the person whose position in the room is to be detected.
[0003]
Examples of a method for identifying an individual include a radio frequency identification (RF-ID) (for example, see Patent Literature 1) and a method based on image recognition from a CCD image (for example, see Patent Literature 2).
[0004]
RF-ID uses radio waves of a specific frequency to perform bidirectional communication between a tag attached to a human body (also called a transponder) and an antenna connected to a host device such as a computer (also called a reader). Is a system that receives identification information of a tag and automatically identifies a target human body. This system can be broadly classified into two types according to a readable distance of the tag (hereinafter, referred to as a reading distance). One is a short distance type system using a low frequency, in which the reading distance between a tag and an antenna is around 50 cm or less. In this system, it is common to hold the tag over the antenna or sew the tag at the end of the pants and read it with the antenna installed on the floor. The other is a long-distance type system in which a battery is built in the tag and microwaves are used as radio waves, in which the reading distance between the tag and the antenna exceeds 1 m. When these are carried by a person, tag information can be read without being conscious when passing through the vicinity of the antenna.
[0005]
Examples of a method of specifying the position of a human body in a room include a method of extracting a human body position from a CCD image and a method of extracting a human body position from temperature distribution information obtained by a two-dimensional infrared sensor. A method of using a CCD image is to take a close-up photograph of a human body at a doorway with a CCD camera, extract features such as the face of the human body by image recognition, and collate the features with a pre-registered unique feature to obtain a personal information. The identification is performed. In addition, a method of specifying an approximate position from the intensity of radio waves from a plurality of base stations using a PHS or the like in a very large building has been proposed.
[0006]
Further, by integrating these technologies, a person is identified by RF-ID when entering a room, a person detected by a CCD camera is identified using the identification information, and a position of the identified person is identified. Has been devised by the present applicant and has already been proposed (see Patent Document 3).
[0007]
[Patent Document 1]
JP-A-62-287727
[Patent Document 2]
JP 05-2198 A
[Patent Document 3]
JP 2001-74855 A
[0008]
[Problems to be solved by the invention]
Many methods for detecting the position of a specific person as described above have been proposed. By the way, when living in a house, there are many dangerous areas that lead to an accident such as a bath or stairs.
[0009]
However, when the interior of the house is examined in more detail, there is a dangerous place not only for all the residents but only for a specific person (such as an infant or a physically handicapped person). For example, around a gas stove is not dangerous if the mother cooks there, and Belanda is not dangerous if the mother does laundry there. In addition, automatic doors, in-home elevators, and the like are not necessarily dangerous for healthy persons.
[0010]
Originally, the need to detect danger in advance differs from person to person and should not be standardized.However, in the danger warning system derived from the human position detection system described above, individual No adaptation has been proposed.
[0011]
The present invention has been made to solve the above-described problems, and has as its object to provide a danger warning system adapted to an individual.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, an individual danger warning system according to the present invention includes a storage unit that stores a predetermined individual danger area, a human position detection unit that detects a position of a person, and the predetermined individual. A personal identification means for identifying, a warning means for issuing an alarm, a predetermined individual identified by the personal identification means and a person whose position is detected by the human position detection means, and the identified predetermined When an individual enters a danger area corresponding to the identified predetermined individual stored in the storage unit, a control unit that issues an alarm by the alarm unit is provided (claim 1). With such a configuration, a danger area is set for each predetermined individual, and an alarm is issued when the individual enters the danger area, so that an alert suitable for the individual can be issued.
[0013]
The control means may further issue an alarm based on the approach speed of the predetermined individual to the dangerous area before the predetermined individual enters the dangerous area (claim 2). With this configuration, a warning is issued in consideration of the approach speed to the dangerous area, so that a more appropriate alarm can be issued.
[0014]
Further, the control means may issue different levels of alarms according to the speed at which the predetermined individual approaches the dangerous area (claim 3). With such a configuration, a warning can be issued according to the degree of danger.
[0015]
Further, the alarm means may issue an alarm to a third party (claim 4). With this configuration, the safety of the person can be achieved by a third party.
[0016]
Further, the alarm means may issue an alarm to the person (claim 5). With this configuration, the safety of the person can be quickly achieved.
[0017]
Further, the alarm means may be a means for giving vibration to the person by a vibrator (claim 6). With this configuration, it is possible to easily realize the alarming means that can ensure the safety of the person.
[0018]
Further, the human position detecting means may be constituted by an image sensor which extracts a human image from an image in a visual field and specifies the position thereof. With this configuration, the human position detecting means can be easily realized.
[0019]
Further, the human position detecting means is provided so as to have a human position detection area capable of detecting the position of a person in a behavior space of a person having an entrance, and the dangerous area is set in the human position detection area, As means for identifying the predetermined individual, a human position detection area display device provided in the entrance or action space and indicating the presence of the human position detection area, and personal identification information corresponding to the predetermined individual are stored. A portable terminal for carrying to a predetermined individual, and personal identification information sending means for sending the personal identification information when the portable terminal is located near the human position detection area display device, wherein the control means comprises: The person whose position is detected by the human position detecting means may be identified as the predetermined individual based on the personal identification information transmitted from the personal identification information transmitting means (claim 8). . In general, when detecting a detailed position of an individual, it is difficult to identify the individual at the same time as the position detection. Therefore, it is necessary to identify the individual whose position is to be detected and the monitored individual. Then, a position detection area including a danger area is set in an action space (a room in a building, etc.) in which a person's access is limited to an entrance, and when a portable terminal to be carried by an individual to be monitored is located at the entrance, Since the personal identification information for identifying the individual is transmitted, the individual whose position is to be detected and the monitored individual can be easily identified.
[0020]
The human position detection area display device transmits an energy wave that can be received in the vicinity thereof, and the personal identification information transmitting unit is built in the portable terminal, and the personal identification information transmitting device is configured to receive the energy wave when receiving the energy wave. Identification information may be transmitted (claim 9). With this configuration, it is possible to easily realize a configuration in which the personal identification information is transmitted when the mobile terminal is located near the human position detection area display device.
[0021]
Further, passing direction detecting means for detecting a passing direction of the object at the entrance of the action space is further provided, and the control means receives the personal identification information sent from the personal identification information sending means and controls the passing direction means. When the passing direction of the detected object is the direction entering the action space, the person whose position is detected by the person position detecting means may be identified as the predetermined individual (claim 10). With this configuration, it is considered that the individual to be monitored goes to the action space, so that the individual whose position is to be detected and the individual to be monitored can be accurately identified.
[0022]
Further, the passing direction detecting means may use a distance sensor. With this configuration, the passing direction detecting means can be easily configured.
[0023]
Further, the action space has a plurality of entrances and exits, and a plurality of the human position detection area display devices are provided so as to correspond to the plurality of entrances and exits, and the plurality of position area display devices correspond to the entrances and exits. Sending out the identification information, the personal identification information sending means sends out the entrance identification information together with the personal identification information, and the control means, among the persons detected by the person position detecting means, the entrance identification information The person located closest to the corresponding doorway may be identified as the predetermined person corresponding to the personal identification information (claim 12). With this configuration, even when there are a plurality of entrances, it is possible to accurately identify the individual whose position is to be detected and the individual to be monitored.
[0024]
Further, the plurality of human position detection area display devices transmit energy waves having different waveforms from each other as the entrance identification information, and the personal identification information transmission unit is configured to transmit the energy waves unique to the entrance according to the waveform of the energy waves. The doorway number may be transmitted (claim 13).
[0025]
Further, the personal identification information may be a terminal number assigned to each terminal (claim 14).
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1
FIG. 1 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 1 of the present invention, FIG. 2 is a functional block diagram showing a configuration of an individual danger warning system of FIG. 1, and FIG. 3 is an individual of FIG. It is a figure which shows the example of a structure of the human position detection area display apparatus of another danger warning system, and the human position detection area detection part of a portable terminal, (a) is a schematic diagram which shows the structure, (b) generates an electromagnet. FIG. 4 is a graph showing a change in magnetic field intensity, and FIG. 4 is a table showing danger area information stored in the database of the individual danger warning system of FIG.
[0027]
1 and 2, the individual danger warning system includes a control device (control means) 1, a human position detection device (human position detection means) 21, a human position detection area display device (human position detection area display means) 2. , A mobile terminal 5, a base station 6, a database (storage means), and an alarm device (notification means) 8.
[0028]
In the present embodiment, the human position detecting device 21 is installed at an appropriate position in a room 102 of a building as a human activity space having an entrance 103, and the human position detecting area 9 extends over the entire area of the floor of the room 102. Is set. That is, the human position detecting device 21 here is configured by, for example, a CCD camera, and is installed on the ceiling of the room 102. The CCD camera 21 is installed so that an area up to a predetermined height of the room 102 falls within its field of view, whereby the entire area of the floor of the room 102 becomes the human position detection area 9. The human position detecting device 21 is connected to the control device 1 installed at an appropriate place in the building, and sends the captured image to the control device 1 as human position information. The control device 1 will be described later in detail.
[0029]
A person position detection area display device 2 is installed at an entrance 103 of the room 102. The mobile terminal 5 is to be carried by the person 22 to be monitored, and has a person position detection area detection unit 3 and a personal identification information transmission unit 4. The human position detection area detection unit 3 and the personal identification information transmission unit 4 of the portable terminal 5 and the human position detection area display device 2 are configured by a well-known RF-ID.
[0030]
3A, the RF-ID includes an electromagnet 62 forming a main part of the human position detection area display device 2, a coil 63 forming a main part of the human position detection area detection unit 3, When the electromagnet 62 generates a magnetic field 61 whose intensity H changes with respect to the time axis as shown in FIG. 3B and the coil 63 is located in this magnetic field, as shown in FIG. A voltage is generated in the coil 63 by electromagnetic induction, and when the voltage is equal to or higher than a predetermined value, the personal identification information transmitting section 4 transmits the personal identification information. That is, the personal identification information sending section 4 has a processing device (not shown) composed of a wireless communication circuit (not shown) and an arithmetic processing device such as a microcomputer, and the main memory of the processing device stores each terminal. Is stored as a personal identification number assigned to the terminal. When the voltage generated in the coil 63 is equal to or higher than a predetermined value, the processing device reads the terminal number stored in the main memory and transmits the terminal number to the outside through the wireless communication circuit. Here, since the magnetic field generated by the electromagnet 62 is formed substantially near the electromagnet 62, when the terminal 5 is positioned near the electromagnet 62, in other words, when the terminal 5 is positioned near the human position detection area 9. Only when is the terminal number transmitted from the portable terminal 5 to the outside. Therefore, the electromagnet 62 and, consequently, the human position detection area display device 2 serve to display the human position detection area 9. Further, the magnetic field 61 generated by the human position detection area display device 2 constitutes human position area display information. Note that the detection range of the magnetic field 61 generated by the human position detection area display device 2 by the human position detection area detection unit 3 is preferably about 1 to 2 m from the human position detection area display device 2. This is to ensure that the portable terminal 5 is detected when being carried by a human, and that no erroneous detection is performed when a plurality of human position detection area display devices 2 are present. It is desirable that the human position detection area display device 2 be provided as close to the human position detection area 9 as possible. This is because the closer the person is, the more accurate it is to identify and track a human body entering the room 102. The base station 6 is installed at an appropriate place in a building and has a communication circuit (not shown). The base station 6 relays two-way communication between the mobile terminal 5 and the control device 1 by wireless communication with the mobile terminal 5. Therefore, the terminal number transmitted from the mobile terminal 5 is transmitted to the control device 1 via the base station 6. The control device 1 is composed of, for example, a microcomputer. For example, the main memory of the microcomputer constitutes the database 7. An alarm device 8 is connected to the control device 1. The alarm device 8 is composed of, for example, a buzzer installed at an appropriate place in a building.
[0031]
Next, dangerous area information, which is a characteristic configuration of the present invention, will be described with reference to FIGS. The database 7 stores dangerous area information as shown in FIG. In this dangerous area information, a terminal number and a dangerous area are defined in association with an individual. In the present embodiment, for example, it is assumed that a family resides in the building of FIG. 1 and that the family is composed of a father, mother, brother, sister, grandmother, and great-grandfather. Individuals constituting the family are monitored by the individual danger warning system, and terminal numbers "001" to "006" are assigned to the individuals. That is, six portable terminals 5 for carrying the father, mother, brother, sister, grandmother, and great-grandfather are prepared, and portable terminals 5 for the father, mother, brother, sister, grandmother, and great-grandfather are provided. The terminal numbers “001”, “002”, “003”, “004”, “005”, and “006” are stored in the personal identification information sending unit 4 of the “1”. Further, as shown in FIG. 1, in the present embodiment, it is assumed that a stove 104 exists as a dangerous place in the room 102. Referring to FIG. 1 and FIG. 4, ranges of 1 m, 0.5 m, and 3 m around the stove 104 are set as a danger area 105b for the younger sister, a danger area 105a for the grandmother, and a danger area 105c for the great-grandfather, respectively. I have. In this case, the type (level) of an alarm when each individual enters each of the danger areas 105a to 105c is set to "alert", that is, an alarm is issued from the alarm device 8. In addition, here, a veranda exists as another dangerous place in the building, and a human position detecting device similar to the human position detecting device 21 in FIG. 1 is separately installed in a room having the veranda and connected to the control device 1, and Around the veranda, a danger area is set for each individual similarly to the case of the stove.
[0032]
In FIG. 1, a control device 1 extracts a human body from an image transmitted from a CCD camera 21 constituting a human position detecting device, and specifies a position of the extracted human body in a room 102. As a method of specifying the position of the extracted human body in the room 102, for example, a CCD camera 21 is installed at the upper corner of the room 102, an oblique lower part is photographed, the top of the human body is extracted, and the human body is extracted by its coordinates. Is estimated. Further, when receiving the mobile number from the mobile terminal 5 via the base station 6, the control device 1 searches the database 7 and acquires the danger area corresponding to the terminal number. Then, when the extracted human body enters the acquired dangerous area, an alarm signal is output to the alarm device 8.
[0033]
Next, the operation of the individual danger warning system configured as described above will be described.
[0034]
1 to 4, an example will be described in which a person 22 is a great-grandfather and the great-grandfather 22 carries the portable terminal 5, enters the room 102 from the entrance 103, and approaches the stove 104.
[0035]
When the great-grandfather 22 is located on the human position detection area display device 2, the human position detection area detection unit 3 of the portable terminal 5 generates a voltage higher than a predetermined voltage by the magnetic field generated by the human position detection area display device 2. Then, the personal identification information sending section 4 reads out the terminal number “006” stored in the main memory and transmits it wirelessly. The transmitted terminal number is received by the base station 6 and transmitted to the control device 1. When receiving the terminal number, the control device 1 searches the database 7 using the terminal number “006” as a keyword and acquires the dangerous area 105c corresponding to the terminal number “006”. Thereby, control device 1 identifies that the person who carries portable terminal 5 is the person corresponding to terminal number “006”, that is, his great-grandfather.
[0036]
On the other hand, the human position detecting device 21 constantly captures the image in the room 102 and sends it to the control device 1 (while the individual danger warning system 101 is operating). When the person 22 enters the room 102, the human position detecting device 21 sends an image of the great-grandfather 22 to the control device 1. Then, the control device 1 extracts a person (more precisely, a human body) from this image, and performs the subsequent processing assuming that this person is the person corresponding to the terminal number “006”, that is, his great-grandfather. At the same time, the control device 1 specifies the position of the great grandfather 22 in the room 102. As a result, the person whose position in the room 102 is specified by the person position detecting device 21 and the person identified by the portable terminal 5 are identified by the control device 1, and thereafter, the position of the identified person in the room 102 Are tracked by the control device 1.
[0037]
Then, when the great-grandfather 22 enters the dangerous area 105c, the control device 1 sends an alarm signal to the alarm device 8. Then, the alarm device 8 sounds a buzzer. As a result, the other grandfather in the building is notified that the great-grandfather 22 has entered the danger area 105c, and the safety is ensured.
[0038]
Further, when the person 22 carrying the portable terminal 5 is a younger sister, similarly to the above, when the younger sister 22 enters the dangerous area 105b, the alarm device 8 is controlled by the control device 1 and issues an alarm.
[0039]
If the person 22 carrying the portable terminal 5 is a grandmother, when the grandmother 22 enters the danger area 105a, the alarm device 8 is controlled by the control device 1 and issues an alarm.
[0040]
On the other hand, if the person 22 carrying the portable terminal 5 is one of a father, a mother, and a brother, since the dangerous area is not set, the control device 1 identifies these persons and tracks their positions. The alarm is not activated by operating the alarm device 8.
[0041]
Therefore, according to the present embodiment, it is possible to issue a danger warning suitable for individuals constituting a family.
[0042]
In the above description, the case where one person enters the room 102 is described. However, when a plurality of persons sequentially enter the room 102, each person is identified as described above, and the person position detection is performed. The position in the area 9 is tracked, and the presence or absence of intrusion into the dangerous areas 105a to 105c set for each person is monitored.
[0043]
Further, information such as height and shoulder width specific to each individual is stored in the main memory of the personal identification information transmitting unit 4 of the portable terminal 5 and transmitted together with the terminal number. When a human body is extracted from an image captured by the device 21, this may be effectively used as an image processing parameter. In this way, the control device 1 can perform position detection with higher accuracy for each individual.
[0044]
In addition, the personal identification information sending means (personal identification information sending unit 4) may be provided in the person position detection area display device 2 instead of the portable terminal 5. For example, the electromagnet 63 is provided on the mobile terminal 5 and the coil 3 is provided on the human position detection area display device 2, and the waveform of the magnetic field is changed in accordance with the terminal number of the mobile terminal 5 so that The terminal number may be transmitted to the control device 1.
Embodiment 2
FIG. 5 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 2 of the present invention. 5, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.
[0045]
As shown in FIG. 5, in the individual danger warning system according to the present embodiment, a passing direction detecting device 41 is further installed at the entrance 103 of the room 102. Other points are the same as the first embodiment.
[0046]
The passing direction detecting device 41 detects a passing direction of an object passing through a predetermined area, and its detection output is sent to the control device 1. The passing direction detecting device 41 includes, for example, an infrared sensor or a distance sensor using light or ultrasonic waves. When a pyroelectric infrared sensor is used, it is mounted on the ceiling of the room to detect the floor surface and has a plurality of infrared light receiving units, and the order of reaction to the object passing between the floor surface and the light receiving unit By analyzing the data, the moving direction of the object may be detected.
[0047]
The passing direction detecting device 41 is installed so that its detection area is located at the entrance / exit 103 of the room 102, that is, at the entrance / exit to the human position detection area 9, and overlaps the range where the human position detection area display device 2 can be detected. You. Since the detection area of the passing direction detection device 41 overlaps the range in which the human position detection area display device 2 can be detected, a person who has passed can be automatically identified as an individual corresponding to the terminal number of the mobile terminal. At the same time, since the detection area of the passing direction detection device 41 is located at the entrance to the human position detection area 9, it is possible to detect whether a passing person has entered or exited the human position detection area 9.
[0048]
In the individual danger warning system 101 configured as described above, when the person 22 carrying the portable terminal 5 enters the room 102, the portable number corresponding to the person 22 is controlled from the portable terminal 5 via the base station 6. While being sent to the device 1, the passing direction indicating the entry of the person 22 is sent from the passing direction detecting device 41 to the control device 1. Then, the control device 1 identifies a person who has entered the room 103 through the entrance 103 among the persons shown in the image in the room 102 received from the person position detecting device 21 as the individual corresponding to the terminal number of the portable terminal 5. On the other hand, when the person 22 who carries the portable terminal 5 leaves the room 102, the portable number corresponding to the person 22 is transmitted from the portable terminal 5 to the control device 1 via the base station 6, and the passing direction detecting device 41 The passing direction indicating the exit of the person 22 is sent to the control device 1. Then, the control device 1 identifies the person who has exited from the entrance 103 as the individual corresponding to the terminal number of the mobile terminal 5, and ends the tracking of that person.
[0049]
Thereby, the following effects can be obtained. For example, suppose that one person leaves room 102 and another person stays in room 102 in a situation where two people originally existed in room 102. In this case, if the passing direction detection device 41 is not installed, the person 22 identified by the interaction between the mobile terminal 5 and the human position detection area display device 2 then reenters the room 102 or exits. Since it is not known whether or not the person has stayed in the room 102 and then detected by the human position detecting device 21, there is a possibility that the person who has already left the room and is erroneously identified as the above-identified person 22. However, in the present embodiment, since the passing direction detecting device 41 is installed, the leaving of the person 22 is detected simultaneously with the identification of the person 22 by the interaction between the portable terminal 5 and the human position detection area display device 2. Therefore, such incorrect identification is prevented.
Embodiment 3
FIG. 6 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 3 of the present invention, and FIG. 7 is a diagram showing a change in the intensity of a magnetic field generated by the human position detection area display device of the individual danger warning system of FIG. 5A is a graph showing a change in the intensity of a magnetic field generated by a first human position detection area display device, and FIG. 6B is a graph showing a change in the intensity of a magnetic field generated by a second human position detection area display device. FIG. 6, the same reference numerals as those in FIG. 5 indicate the same or corresponding parts.
[0050]
As shown in FIG. 6, in the present embodiment, the room 102 has two entrances 103A and 103B, and the entrances 103A and 103B are respectively provided with first and second person position detection area display devices 2A and 2B. And first and second passing direction detecting devices 41A and 41B. As shown in FIGS. 7A and 7B, the first and second human position detection area display devices 2A and 2B generate magnetic fields having different waveforms (here, frequencies) from each other. On the other hand, the main memory of the personal identification information transmitting section 4 (see FIG. 1) of the portable terminal 5 (5A, 5B...) Stores the magnetic fields generated by the first and second person position detection area display devices 2A and 2B. Are stored in correspondence with the entrance numbers of the entrances and exits where each of them is installed. Then, the personal identification information sending unit 4 sets the frequency of the voltage induced in the coil 63 (see FIG. 3) constituting the human position detection area detection unit 3 to the first and second human position detection area display devices 2A and 2B. Then, it is determined whether or not the frequency matches the frequency of the magnetic field generated, and if so, the entrance / exit number corresponding to the matching frequency is transmitted together with the terminal number. When receiving the entrance number and the terminal number via the base station 6, the control device 1 is close to the entrances 103A and 103B corresponding to the received entrance number among the persons extracted from the image of the human position detecting device 21. The other person is identified as the individual corresponding to the received terminal number. Other points are the same as those of the second embodiment.
[0051]
Next, the operation of the individual danger warning system 101 configured as described above will be described. Here, it is assumed that persons 22A and 22B who carry portable terminals 5A and 5B from entrances 103A and 103B of room 102 enter room 102, respectively.
[0052]
When the person 22A enters from the entrance 103A, when the portable terminal 5A to be carried is located in the magnetic field H generated by the first person position detection area display device 2A, a voltage of a frequency corresponding to the frequency is applied to the portable terminal 5A. It is induced in the coil 63. Then, the personal identification information sending unit 4 of the portable terminal 5 sends out the entrance / exit number corresponding to the frequency of the induced voltage, that is, the entrance / exit number corresponding to the entrance / exit 103A together with the terminal number. Then, the control device 1 receives the entrance number and the terminal number via the base station 6, and among the people extracted from the image of the human position detecting device 21, the person closest to the entrance 103A is the terminal number of the portable terminal 5A. Is identified as an individual corresponding to. Similarly, when the person 22B enters the room through the entrance 103B, the control device 1 determines the person closest to the entrance 103B among the persons extracted from the image of the person position detecting device 21 in the portable terminal 5B. The individual corresponding to the terminal number is identified. Thus, even when the room 102 has a plurality of entrances 103a and 103b, it is possible to identify individuals entering and exiting the room 102, and to accurately track and alert the position.
[0053]
In addition, although the case where the number of entrances is two has been described above, the present invention can be applied to the case where the number of entrances is three or more in the same manner as described above.
Embodiment 4
FIG. 8 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 4 of the present invention. 8, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.
[0054]
As shown in FIG. 8, in the present embodiment, the alarm device 8 is carried by a person 22. The alarm device 8 is controlled by the control device 1 wirelessly via the base station 6. Other points are the same as the first embodiment. The alarm device 8 is configured by a vibrator provided with a wireless communication circuit here.
[0055]
In the individual danger warning system 101 configured as described above, when the control device 1 sends an alarm signal to the alarm device 8 via the base station 6, the danger is notified to the person by the vibrator. As a result, the safety of the person can be quickly achieved.
[0056]
In the alarm device 8, a switch / speaker may be used instead of the vibrator. In this case, a warning is issued to the person by voice such as a message. Embodiment 5
FIG. 9 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 5 of the present invention. 9, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.
[0057]
As shown in FIG. 9, in the present embodiment, the mobile terminal 5 has a built-in acceleration sensor 45, and the personal identification information transmitting unit 4 of the mobile terminal 5 sequentially transmits the acceleration detected by the acceleration sensor 4. When receiving the acceleration via the base station 6, the control device 1 moves to the dangerous areas 105a to 105c corresponding to the terminal number of the portable terminal 5 based on the acceleration and the image transmitted from the human position detecting device 21. The approach speed of the person 22 is calculated, and if the approach speed is equal to or higher than a predetermined value, the alarm device 8 is controlled to generate an alarm. In the present embodiment, the control device 1 ranks the approach speeds into, for example, “large”, “medium”, and “small”, and causes the alarm device 8 to issue a warning at a level corresponding to the approach speed rank. The alarm level corresponds to, for example, an approach speed rank of “large”, “medium”, and “small”, and sets the buzzer sounding time to three lengths of “long”, “medium”, and “short”. Change. Other points are the same as the first embodiment.
[0058]
With such a configuration, a warning is issued in consideration of the approach speed to the dangerous area, so that a more appropriate alarm can be issued. Further, different levels of warnings are issued according to the approach speed to the dangerous area, so that a warning according to the degree of risk can be issued.
[0059]
In the first to fifth embodiments, the human position detection device 21 and the control device 1 may be connected wirelessly. Further, in the first to third and fifth embodiments, the alarm device 8 and the control device 1 may be wirelessly connected.
[0060]
Further, in Embodiments 1 to 5, in addition to using an image sensor such as an infrared camera as the human position detecting device 21, a pressure sensor may be provided over the entire surface of the floor of the room 102.
[0061]
In Embodiments 1 to 5, the human position detection area display device 2 and the human position detection area detection unit 3 of the portable terminal 5 are configured to transmit and receive energy waves such as radio waves, ultrasonic waves, and infrared rays. May be.
[0062]
Further, in the first to fifth embodiments, a configuration may be employed in which the individual is identified by, for example, a CCD camera or the like, instead of the terminal 5 in which the terminal number is stored, as the individual identification means.
[0063]
Further, in the first to fifth embodiments, a configuration that emits light such as a patrol light may be adopted as the alarm device in addition to a configuration that emits a sound such as a bell or an alarm.
[0064]
Further, in Embodiments 1 to 5, the case where the present invention is applied to a room as a person's action space has been described. The invention can be applied.
[0065]
【The invention's effect】
The present invention is implemented in the form as described above, and has an effect that a danger warning system adapted to an individual can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 1 of the present invention.
FIG. 2 is a functional block diagram showing a configuration of an individual danger warning system of FIG. 1;
3A and 3B are diagrams illustrating a configuration example of a person position detection area display device of the individual danger warning system of FIG. 1 and a person position detection area detection unit of a portable terminal, wherein FIG. (B) is a graph showing a change in the intensity of the magnetic field generated by the electromagnet.
FIG. 4 is a table showing danger area information stored in a database of the individual danger warning system of FIG. 1;
FIG. 5 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 2 of the present invention.
FIG. 6 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 3 of the present invention.
7 is a graph showing a change in the intensity of a magnetic field generated by the person position detection area display device of the individual danger warning system of FIG. 6, wherein (a) is a magnetic field generated by the first person position detection area display device; And (b) is a graph showing the intensity change of the magnetic field generated by the second human position detection area display device.
FIG. 8 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 4 of the present invention.
FIG. 9 is a schematic diagram showing a configuration of an individual danger warning system according to Embodiment 5 of the present invention.
[Explanation of symbols]
1 controller
2 person position detection area display device
3 person position detection area detector
4 Personal identification information sending section
5 mobile terminals
6 base stations
7 Database
8 Alarm device
9 People position detection area
21 Human position detection device
22 people
41 Passing direction detector
45 acceleration sensor
61 Magnetic field
62 electromagnet
63 coil
101 Individual danger warning system
102 rooms
103 doorway
104 Danger spot
105a-105c dangerous area

Claims (14)

Storage means for storing a predetermined individual danger area;
Human position detecting means for detecting the position of a person;
Personal identification means for identifying the predetermined individual;
Alarm means for issuing an alarm;
A predetermined individual identified by the personal identification means and a person whose position is detected by the person position detection means are identified, and the identified predetermined individual is stored in the storage means. A danger warning system for an individual, comprising: a control unit for issuing an alarm by the alarm unit when a danger area corresponding to an individual is entered. 2. The individual danger warning system according to claim 1, wherein the control unit further issues an alarm based on a speed of the predetermined individual approaching the dangerous area before the predetermined individual enters the dangerous area. 3. The individual danger alarm system according to claim 2, wherein the control unit issues an alarm of a different level according to a speed at which the predetermined individual approaches the dangerous area. 2. The individual danger alarm system according to claim 1, wherein the alarm unit issues an alarm to a third party. 2. The individual danger warning system according to claim 1, wherein said alarm means issues an alarm to the person. 6. The individual danger warning system according to claim 5, wherein the alarm means vibrates the person by a vibrator. 2. The individual danger warning system according to claim 1, wherein said human position detecting means comprises an image sensor for extracting a human image from an image in a visual field and specifying the position. The human position detection means is provided to have a human position detection area capable of detecting the position of a person in the action space of a person having an entrance,
The danger area is set in the human position detection area,
As means for identifying the predetermined individual, a human position detection area display device provided in the entrance or action space and indicating the presence of the human position detection area, and personal identification information corresponding to the predetermined individual are stored. A portable terminal for carrying to a predetermined person, and personal identification information sending means for sending the personal identification information when the portable terminal is located near the human position detection area display device,
2. The individual danger according to claim 1, wherein the control unit identifies a person whose position is detected by the person position detection unit as the predetermined individual based on the personal identification information transmitted from the personal identification information transmission unit. Alarm system. The human position detection area display device transmits an energy wave that can be received in the vicinity thereof,
9. The individual danger alarm system according to claim 8, wherein said personal identification information transmitting means is built in said portable terminal, and transmits said personal identification information when said energy wave is received. Passing direction detecting means for detecting a passing direction of the object at the entrance of the action space is further provided,
The control means receives the personal identification information sent from the personal identification information sending means, and when the passing direction of the object detected by the passing direction means is a direction to enter the action space, the human position detecting means 9. The individual danger warning system according to claim 8, wherein a person whose position is detected is identified as the predetermined individual. The individual danger warning system according to claim 10, wherein the passing direction detecting means uses a distance sensor. The action space has a plurality of doorways, and a plurality of the human position detection area display devices are provided so as to correspond to the plurality of doorways,
The plurality of position area display devices each send out doorway identification information corresponding to the doorway,
The personal identification information sending means sends the entrance identification information together with the personal identification information,
The said control means identifies the person located closest to the entrance corresponding to the said entrance identification information among the persons detected by the person position detection means as a predetermined individual corresponding to the said personal identification information. Personal danger alert system. The plurality of human position detection area display devices transmit energy waves having different waveforms as the entrance identification information,
9. The individual danger warning system according to claim 8, wherein said personal identification information transmitting means transmits an entrance / exit number unique to said entrance / exit according to a waveform of said energy wave. The individual danger warning system according to claim 8, wherein the personal identification information is a terminal number assigned to each terminal.

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