JP6350377B2 - Watch system - Google Patents

Description

  The present invention relates to a monitoring system for detecting an abnormality or the like of a health condition of a person spending at a care facility.

  In recent years, a monitoring system has been proposed in order to detect an abnormality in the health condition of a person who spends time in a nursing facility or a hospital. People who spend time in nursing care facilities or hospitals may easily fall indoors, fall from a bed, and have abnormalities such as breathing and heartbeat. There are caregivers and nurses who support their lives in the facility, but there are relatively few people and they cannot always attend. A watching system has been proposed to solve such a problem, and an example of the related art related thereto is disclosed in Patent Document 1.

  The safety monitoring device described in Patent Document 1 acquires biological information related to body movement and breathing of a subject from reflected waves of radio waves radiated toward the subject, and the safety of the subject from the biological information. Is monitoring. In order to acquire the biological information of the subject, a Doppler sensor that detects and outputs a deviation between the radiated wave using the microwave and the reflected wave is used. This makes it possible to correctly detect the body movement and breathing of the subject.

JP 2012-75861 A

  However, in the prior art described in Patent Document 1, there is a problem that when a plurality of radio wave sensors corresponding to each of a plurality of subjects are individually installed, the possibility of radio wave interference and radio wave interference increases. Accordingly, there is a possibility that the biological information of each subject cannot be accurately detected individually. In addition, there is a problem that it is necessary to add and move the radio wave sensor as the bed in the living room is increased or moved in the room, and it takes time to set the radio wave sensor that must be changed sequentially.

  In addition, the radio wave sensor has a specification in which the frequency of the radiated radio wave can be arbitrarily changed digitally by external register settings, etc., and a specification in which the frequency is fixed to a predetermined value and cannot be changed by external settings. There are things. When the plurality of radio wave sensors of the above-described prior art have specifications that the frequency of the radiated radio wave cannot be changed by setting or the like, there is a problem that the possibility of radio wave interference and radio wave interference is increased.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a monitoring system capable of individually and accurately detecting biological information of a plurality of subjects with a simple configuration.

  In order to solve the above problems, the monitoring system of the present invention corresponds to each of a plurality of radio wave detection units that radiate and receive radio waves and individually detect biological information of the subject, and the plurality of radio wave detection units. A plurality of temperature control units arranged in close proximity to each other and capable of changing the ambient temperature of the radio wave detection unit, and a setting unit for individually setting a set temperature of the plurality of temperature control units, The radio wave detection unit has a characteristic that the frequency of the radio wave radiated varies due to the influence of ambient temperature, and the setting unit includes a plurality of settings so that the frequency of the radio wave radiated by each of the radio wave detection units does not interfere with or interfere with each other. The set temperature of the temperature control unit is individually set.

  Many radio wave detectors with specifications that the frequency of the radiated radio wave is fixed to a predetermined value and cannot be changed from the outside by setting etc. often have characteristics that the frequency of the radiated radio wave varies due to the influence of the ambient temperature. Generally known. Correspondingly, according to the above configuration, the frequency of the radio wave radiated by each of the plurality of radio wave detection units is individually changed by individually setting the set temperature of the temperature control unit corresponding to each of the plurality of radio wave detection units. Is done. Thereby, for example, radio waves having a frequency at which interference and interference do not occur in each of a plurality of radio wave detection units corresponding to a plurality of subjects who spend at the facility are emitted. Then, using the plurality of radio wave detection units, the biological information of the plurality of subjects is individually accurately detected.

  In the monitoring system having the above-described configuration, the setting unit individually sets the set temperatures of the plurality of temperature control units so that the frequencies of the radio waves emitted from the plurality of radio wave detection units are different from each other. .

  In the monitoring system configured as described above, when the interference or interference of the radio waves radiated from the plurality of radio wave detection units is constantly monitored and the radio wave interference and radio interference are detected, the setting unit is A previous set temperature of the temperature control unit is changed.

  In the monitoring system having the above-described configuration, the temperature control unit includes a Peltier element for changing the ambient temperature of the radio wave detection unit.

  The monitoring system having the above configuration further includes a control unit that receives a command from the setting unit and controls operations of the radio wave detection unit and the temperature control unit, and the setting unit relates to a set temperature of the temperature control unit. A setting command is transmitted to the control unit, and the control unit controls the operation of the temperature control unit according to the setting command related to the set temperature received from the setting unit.

  The monitoring system having the above configuration further includes a control unit that receives a command from the setting unit and controls operations of the radio wave detection unit and the temperature control unit, and the setting unit emits the radio wave radiated from the radio wave detection unit. A setting command related to the frequency of the temperature is transmitted to the control unit, and the setting command related to the frequency received by the control unit from the setting unit is converted into a setting command related to the set temperature of the temperature control unit to convert the temperature It is characterized by controlling the operation of the control unit.

  According to the present invention, even if the specifications of the plurality of radio wave detection units cannot be changed by setting or the like, the frequency of these radio waves can be changed by using the temperature control unit. Furthermore, it is possible to suppress the occurrence of radio wave interference and radio wave interference in a plurality of radio wave detectors installed corresponding to each of the plurality of subjects. And it becomes possible to detect the biological information of a several subject separately with a simple structure correctly.

1 is a schematic configuration diagram of a watching system according to a first embodiment of the present invention. It is a block diagram of the sensor box of the watching system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the detection condition of the subject's biometric information by the sensor box of the watching system which concerns on 1st Embodiment of this invention. It is a graph which shows the temperature characteristic of the radiation frequency of the electromagnetic wave detection part of the sensor box of the monitoring system which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the setting method of the sensor box by the watching system which concerns on 1st Embodiment of this invention. It is a flowchart which shows an example of the setting process with respect to the sensor box by the watching system which concerns on 1st Embodiment of this invention. It is a graph which shows the output signal of the electromagnetic wave detection part of the sensor box of the watching system which concerns on 2nd Embodiment of this invention. It is a flowchart which shows an example of the monitoring and reset process with respect to the sensor box by the watching system which concerns on 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
Initially, the structure of the watching system which concerns on 1st Embodiment of this invention is demonstrated using FIG.1 and FIG.2. FIG. 1 is a schematic configuration diagram of a watching system. FIG. 2 is a configuration diagram of a sensor box of the watching system.

  The watching system 1 is installed, for example, in a care facility shown in FIG. The care facility includes, for example, a staff station 100, living rooms 101 to 114, and a wired LAN (Local Area Network) 400. In addition, FIG. 1 shows the outline which looked at the floor of one of the care facilities planarly.

  The staff station 100 is a so-called stuffing station for caregivers who support the lives of the cared people who spend at the care facilities.

  In the care receiver's room, the living rooms 106 to 109 which are single rooms, the living rooms 101 to 105 and the living rooms 110 to 114 which are double rooms are mixed. In each room, beds 201 to 214 for the number of care recipients are installed. In addition, in the living rooms 101 to 105 and the living rooms 110 to 114 which are two-person rooms, beds 201w and 202w to 214w installed on the window side (not shown), and beds 202p and 204p to 214p installed on the passage side (not shown) , Exists. In this description, the identification codes “w” and “p” may be omitted unless particularly limited.

  The wired LAN 400 is installed for communication between the staff station 100 and the rooms 101 to 114. A wireless LAN may be installed instead of the wired LAN 400.

  The watching system 1 includes a management server 2 and sensor boxes 11 to 24.

  The management server 2 is installed in the staff station 100 and is communicably connected to the wired LAN 400. The management server 2 can also be controlled remotely.

  The management server 2 includes a main control unit 3 that includes an arithmetic unit, a storage unit, and other electronic components (not shown). The main control unit 3 obtains information from the sensor boxes 11 to 24 based on programs and data stored and input in advance in a storage unit or the like, and detects a care recipient (subject) abnormality or the like. Is realized. The main control unit 3 includes a setting unit 4 and a radio wave detection unit setting list 5.

  The setting unit 4 individually sets operating conditions of a radio wave detection unit 42 described later mounted on the sensor boxes 11 to 24. As operating conditions of the radio wave detection unit 42, a radiation frequency and a set temperature of a temperature control unit 46 described later corresponding to the radiation frequency are individually stored in the radio wave detection unit setting list 5 corresponding to each radio wave detection unit 42. Yes.

  The sensor boxes 11 to 24 are installed on the ceiling of each room in association with the bed of each room, and are communicably connected to the wired LAN 400. Sensor boxes 16 to 19 are installed in the living rooms 106 to 109 which are single rooms. In the living rooms 101 to 105 and the living rooms 110 to 114 which are two-person rooms, sensor boxes 11w and 12w to 24w are installed in association with the beds 201w and 202w to 214w installed on the window side, and the bed 202p installed on the passage side , 204p to 214p, sensor boxes 12p and 14p to 24p are installed.

  Next, the detailed structure of the sensor box will be described. Since all the sensor boxes have the same basic structure, the sensor box 16 installed in the living room 106 will be described as a representative example with reference to FIG.

  As shown in FIG. 2, the sensor box 16 includes an optical detection unit 41, a radio wave detection unit 42, a temperature control unit 46, and a control unit 43.

  The optical detection unit 41 is configured by a camera for detecting the state of the subject from an image. The optical detection unit 41 is installed toward the bed of each living room, and detects a subject's getting up, getting out of bed, falling, or the like by an image. The optical detection unit 41 includes a near-infrared light projecting unit (not shown) from which an IR cut filter is removed so that the state of the subject can be detected as an image even in a dark environment. Moreover, the camera of the optical detection part 41 can image the whole living room by providing a wide-angle lens.

  The radio wave detection unit 42 is constituted by a microwave Doppler sensor for emitting and receiving radio waves and individually detecting the biological information of the subject. The radio wave detection unit 42 includes a radiation unit and a reception unit (not shown), for example, radiates a microwave of 24 GHz toward the bed in each room, and receives the Doppler-shifted reflected wave reflected by the subject. The radio wave detector 42 detects the breathing state and heart rate of the subject from the reflected wave.

  The radio wave detection unit 42 has a specification in which the frequency of the radiated microwave is fixed to a predetermined value in advance and cannot be changed by setting or the like from the outside. The radio wave detection unit 42 has a temperature characteristic in which the frequency of the radiated microwave fluctuates due to the influence of the ambient temperature. Therefore, the sensor box 16 includes a temperature control unit 46 that can change the ambient temperature of the radio wave detection unit 42.

  The temperature control unit 46 is disposed in close proximity to each of the plurality of radio wave detection units 42. The temperature control unit 46 includes a thermoelectric element such as a Peltier element, and can control the current value that is an input signal to the thermoelectric element to set the temperature and change the ambient temperature of the radio wave detection unit 42. Details of the setting method of the temperature control unit 46 for changing the frequency of the microwave emitted by the radio wave detection unit 42 will be described later.

  The control unit 43 includes a calculation unit, a storage unit, and other electronic components (not shown), and obtains information from the optical detection unit 41 and the radio wave detection unit 42 based on programs and data stored and input in advance in the storage unit. At the same time, the operation of these components is controlled to realize image processing and signal processing related to detection of the state of the subject. The control unit 43 includes an information processing unit 44 and an interface unit 45.

  Outputs from the optical detection unit 41 and the radio wave detection unit 42 are input to the information processing unit 44. The information processing unit 44 performs image processing on the video data received from the optical detection unit 41, and detects the state of the subject from the video. The information processing unit 44 performs signal processing on the microwave data received from the radio wave detection unit 42 and detects the state of the subject from the microwave.

  A network cable (not shown) of the wired LAN 400 is electrically connected to the interface unit 45. Information relating to the state of the subject detected by the sensor box 16 based on the image or microwave is transmitted to the management server 2 via the interface unit 45 and the wired LAN 400. The management server 2 displays information on the state of the subject received from the sensor box 16 on its own display unit (not shown) or transmits it to a mobile terminal or the like (not shown) owned by the caregiver. Or

  The monitoring system 1 is configured such that the setting unit 4 has the microwave frequencies to be radiated by the radio wave detection units 42 of the sensor boxes 11 to 24 that satisfy the predetermined condition that the radio wave interference and radio wave interference do not occur with respect to the sensor boxes 11 to 24. Is derived. Further, the setting unit 4 distributes a control signal related to the set temperature for causing the radio wave detection units 42 to radiate microwaves of those frequencies to the temperature control unit 46 of the sensor boxes 11 to 24 via the wired LAN 400, and In the temperature control unit 46, the corresponding set temperature is individually set.

  Then, the setting method of the temperature control part 46 of each sensor box 11-24 by the setting part 4 is demonstrated using FIGS. FIG. 3 is an explanatory view showing the detection status of the biological information of the subject by the sensor boxes 16 and 17, and is a view of the inside of the living room as viewed from the side. FIG. 4 is a graph showing the temperature characteristics of the radiation frequency of the radio wave detector 42. FIG. 5 is an explanatory diagram showing a method for setting the sensor boxes 11-15. FIG. 6 is a flowchart illustrating an example of setting processing for the sensor boxes 11 to 24. 3 exemplifies the living rooms 106 and 107 and FIG. 5 illustrates the occupying rooms 101 to 105 as an example. However, the setting of the radio wave detection unit 42 is similarly performed in the other occupying rooms.

  For example, as shown in FIG. 3, the bed 206 and the sensor box 16 are installed in the living room 106, and the bed 207 and the sensor box 17 are installed in the adjacent living room 107. The sensor boxes 16 and 17 are installed in the center in the horizontal direction of the ceiling of the living rooms 106 and 107, respectively. In order to increase the detection sensitivity, the radio wave detectors 42 of the sensor boxes 16 and 17 are provided in the sensor boxes 16 and 17 so as to face the beds 206 and 207 indicated by the arrows shown in FIG.

  The setting unit 4 generates radio wave interference and radio wave interference based on the radio wave detection unit 42, that is, the arrangement of the sensor boxes 16 and 17, the radiation direction of the microwaves by the sensor boxes 16 and 17, and the distance between the sensor boxes 16 and 17. The frequency of the microwave to be radiated by the radio wave detection unit 42 of each of the sensor boxes 16 and 17 that satisfies a predetermined condition that does not occur is derived. As a predetermined condition in which radio wave interference and radio wave interference do not occur, for example, the minimum separation distance between adjacent sensor boxes 16 and 17 and the minimum separation frequency of microwaves used by adjacent sensor boxes 16 and 17 are considered.

  The minimum separation distance between the sensor boxes 16 and 17 is set in advance to, for example, 5 m in view of the performance of the radio wave detection unit 42 and the like. When the distance L1 between the sensor boxes 16 and 17 is 5 m or more, the setting unit 4 may make the frequencies of the microwaves radiated from the radio wave detection units 42 of the sensor boxes 16 and 17 the same. On the other hand, when the distance L1 between the sensor boxes 16 and 17 is less than 5 m, the setting unit 4 varies the frequencies of the microwaves radiated from the radio wave detection units 42 of the sensor boxes 16 and 17. This prevents radio wave interference and radio wave interference between the sensor boxes 16 and 17.

  In addition, about the minimum separation distance of the sensor boxes 16 and 17, the distance L2 between the beds 206 and 207 of the adjacent living room is also considered as a condition related to the radiation direction of the microwaves by the sensor boxes 16 and 17. That is, when the distance L2 between the beds 206 and 207 is 5 m or more, the setting unit 4 may make the frequency of the microwaves radiated from the radio wave detection units 42 of the sensor boxes 16 and 17 the same. On the other hand, when the distance L2 between the beds 206 and 207 is less than 5 m, the setting unit 4 varies the frequencies of the microwaves radiated from the radio wave detection units 42 of the sensor boxes 16 and 17. This prevents radio wave interference and radio wave interference between the sensor boxes 16 and 17.

  The minimum separation frequency of the microwaves used by the sensor boxes 16 and 17 is set in advance to, for example, 5 MHz in view of the performance of the radio wave detection unit 42 and the like. Regardless of the distance L1 between the sensor boxes 16 and 17 and the distance L2 between the beds 206 and 207, the setting unit 4 separates the frequency of the microwaves radiated by the radio wave detection unit 42 of each of the sensor boxes 16 and 17 by 5 MHz or more. May be set to the selected frequency. This prevents radio wave interference and radio wave interference between the sensor boxes 16 and 17.

  A temperature control unit 46 is used to change the frequency of the microwave emitted by the radio wave detection unit 42. The radio wave detector 42 has the temperature characteristics shown in FIG. 4 with respect to the frequency that varies due to the influence of the ambient temperature. Many of the general radio wave detection units 42 have a characteristic of, for example, −0.1 to −1.0 MHz / ° C. Here, the radio wave detection unit 42 will be described as having a characteristic of −1.0 MHz / ° C., for example. That is, the setting unit 4 is configured so that the radio wave detection units 42 of the sensor boxes 16 and 17 emit microwaves having a frequency separated from each other by 5 MHz or more. The temperature of each temperature control unit 46 is set so that a difference of 5 ° C. or more occurs in each.

  In the case of the living rooms 101 to 105 shown in FIG. 5, a total of eight beds are provided. On the other hand, the setting unit 4 derives eight types of microwave frequencies separated from each other by 5 MHz from the setting A to the setting H, calculates the set temperature of the temperature control unit 46 corresponding to each of these frequencies, The set temperatures are individually set in the sensor boxes 11w, 12p, 12w, 13w, 14p, 14w, 15p and 15w.

  Thus, when the set temperature of the temperature control unit 46 corresponding to the frequency of the microwaves radiated by the radio wave detection unit 42 of the sensor box in each room is individually set, the subject S resting on the bed in each room Thus, the biological information of the subject S can be individually and accurately detected by emitting and receiving microwaves.

  Next, an example of setting processing for the sensor boxes 11 to 24 will be described along the flow shown in FIG.

  For example, when the monitoring system 1 is introduced into the care facility shown in FIG. 1, initial setting for the sensor box in each room is started (start in FIG. 6).

  In step # 101, the arrangement status of each sensor box is input by a user operation on the management server 2. Information relating to the number of sensor boxes, the distance between adjacent sensor boxes, the distance between adjacent beds, and the like is input as the arrangement status of each sensor box.

  In step # 102, the setting unit 4 derives the microwave frequency to be radiated by the radio wave detection unit 42 of each sensor box based on the input information regarding the arrangement state of each sensor box. The setting unit 4 should radiate each sensor box satisfying a predetermined condition in which radio wave interference and radio wave interference do not occur based on the arrangement of each sensor box, the microwave radiation direction by the sensor box, and the distance between adjacent sensor boxes. The frequency of the microwave is derived. The derived frequencies are individually stored in the radio wave detection unit setting list 5 corresponding to the radio wave detection unit 42 of each sensor box.

  In step # 103, the setting unit 4 calculates the ambient temperature of the radio wave detection unit 42 corresponding to the derived frequency. The calculated ambient temperature of the radio wave detection unit 42 is individually stored in the radio wave detection unit setting list 5 as the set temperature of the temperature control unit 46 corresponding to the radio wave detection unit 42 of each sensor box.

  In step # 104, the calculated set temperature of the temperature control unit 46 is individually distributed from the management server 2 to each sensor box via the wired LAN 400.

  In step # 105, the temperature is individually set in the temperature control unit 46 in each sensor box that has received the distributed set temperature. When the set temperature applied to the temperature control unit 46 of each sensor box is distributed from the management server 2 and set in each sensor box, the setting unit 4 sends a setting command related to the set temperature of the temperature control unit 46 to each sensor. Send to the box. In each sensor box, the control unit 43 outputs a current value corresponding to the set temperature to the temperature control unit 46 in response to the setting command received from the management server 2 (setting unit 4).

  As for the setting command transmitted by the setting unit 4, a setting command related to the frequency of the microwave radiated by the radio wave detection unit 42 may be transmitted to the radio wave detection unit 42. In this case, in each sensor box, the control unit 43 converts the setting command related to the frequency received from the management server 2 (setting unit 4) into the setting command related to the set temperature of the temperature control unit 46, and the temperature control unit 46 Outputs the current value corresponding to the set temperature. In this case, the control unit 43 stores in advance a conversion table of setting commands related to temperature control and setting commands related to frequency control.

  In step # 106, the management server 2 reconfirms whether or not the frequency of the microwave radiated from the radio wave detection unit 42 of each sensor box satisfies a predetermined condition. For example, the first predetermined condition is a condition that the frequencies of the microwaves radiated by the radio wave detection units 42 of adjacent sensor boxes are separated by 5 MHz or more. Further, for example, as a second predetermined condition, the frequency separation between the microwaves emitted by the radio wave detectors 42 of adjacent sensor boxes is less than 5 MHz, and the distance between adjacent sensor boxes or beds is 5 m. This is the condition that they are separated from each other.

  If the predetermined condition is not satisfied in step # 106, the process proceeds to step # 102, and if the predetermined condition is satisfied, the initial setting is terminated (END in FIG. 6).

Second Embodiment
Next, a monitoring system according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a graph showing an output signal of the radio wave detection unit of the sensor box of the watching system. FIG. 8 is a flowchart showing an example of monitoring and resetting processing for the sensor box by the watching system. Since the basic configuration of this embodiment is the same as that of the first embodiment described above, the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted. And

  FIG. 7 shows the output signal waveform of the radio wave detector 42 when the horizontal axis is the Doppler frequency and the vertical axis is the power spectrum after Fourier transform.

  The solid line waveform in FIG. 7 is a background noise pattern when there is no person in the room. Generally, the output signal of the radio wave detector 42 is high in the low frequency region due to the influence of 1 / f noise, and tends to decrease as the frequency increases. On the other hand, the broken line waveform is a noise pattern when two sensor boxes are operated with a distance of 1 m between them and microwaves having the same frequency are radiated to both. Since microwaves of the same frequency are radiated, radio interference and radio interference occur, and it can be seen that the spectrum pattern is flat in the entire frequency range.

  When these waveforms are compared, clearly different characteristics appear, so that it is possible to easily detect whether an abnormal state such as interference or interference has occurred in the microwaves radiated from the plurality of radio wave detection units 42. .

  On the other hand, after the initial introduction of the monitoring system 1, a change occurs in the radiation direction of the microwave and the distance between adjacent sensor boxes due to the addition and position change of the bed and sensor box (radio wave detection unit 42) in the room. There is. In addition, other radio wave transmission devices may be installed and used in a care facility. In these cases, there is a possibility that abnormal states such as interference and interference occur in the microwaves radiated and received by the plurality of radio wave detection units 42.

  Accordingly, the monitoring system 1 of the second embodiment detects interference and interference in the microwaves radiated from the plurality of radio wave detection units 42 while individually detecting the biological information of the subjects in the plurality of living rooms during operation. Whether or not is constantly monitored. When detecting radio wave interference and radio wave interference, the setting unit 4 changes the previous set temperature of the temperature control unit 46 in order to change the frequency of the microwave radiated by the radio wave detection unit 42.

  Next, an example of monitoring and resetting processing for the sensor boxes 11 to 24 will be described along the flow shown in FIG.

  For example, when the monitoring system 1 is operated in the care facility shown in FIG. 1, the detection of the biological information of the subject in the living room is started by the sensor box, and the abnormal state of the microwave radiated from the radio wave detection unit 42 is monitored. Is started (start in FIG. 8).

  In step # 201, it is determined whether or not an abnormal state such as interference or interference has occurred in the microwaves radiated from the plurality of radio wave detection units 42. The abnormal state is determined based on the difference in the characteristics of the microwave waveform shown in FIG. If radio wave interference and radio wave interference are not detected, the monitoring in step # 201 is continued. If radio wave interference and radio wave interference are detected, the process proceeds to step # 202.

  In step # 202, the setting unit 4 derives again the frequency of the microwave to be radiated by the radio wave detection unit 42 of each sensor box so that radio wave interference and radio wave interference do not occur. The derived frequencies are individually stored in the radio wave detection unit setting list 5 corresponding to the radio wave detection unit 42 of each sensor box.

  In step # 203, the setting unit 4 calculates the ambient temperature of the radio wave detection unit 42 corresponding to the derived frequency. The calculated ambient temperature of the radio wave detection unit 42 is individually stored in the radio wave detection unit setting list 5 as the set temperature of the temperature control unit 46 corresponding to the radio wave detection unit 42 of each sensor box.

  In step # 204, the calculated set temperature of the temperature control unit 46 is individually distributed from the management server 2 to each sensor box via the wired LAN 400.

  In step # 205, the temperature is individually set in the temperature control unit 46 in each sensor box that has received the distributed set temperature.

  When the process of step # 205 is completed, the process returns to step # 201 again, and monitoring of the abnormal state of the microwave is continued.

  As in the first and second embodiments, the monitoring system 1 includes a plurality of radio wave detection units 42 (sensor boxes) that radiate and receive microwaves and individually detect biological information of the subject, and a plurality of radio waves. A plurality of temperature control units 46 that are individually arranged in close proximity to each of the detection units 42 and can change the ambient temperature of the radio wave detection unit 42, and set temperatures of the plurality of temperature control units 46 are individually set. A setting unit 4. The radio wave detection unit 42 has a characteristic that the frequency of the radiated microwave fluctuates due to the influence of the ambient temperature, and the setting unit 4 prevents the frequency of the microwaves radiated from each of the radio wave detection units 42 from interfering with or interfering with each other. Sets the set temperatures of the plurality of temperature control units 46 individually.

  According to this configuration, regarding the radio wave detection unit 42 having a specification in which the frequency of the radiated microwave cannot be changed from the outside by setting or the like, the set temperature of the temperature control unit 46 corresponding to each of the plurality of radio wave detection units 42 is set individually. Thus, the frequency of the microwave radiated from each of the plurality of radio wave detection units 42 is individually changed. Thereby, microwaves having a frequency at which interference and interference do not occur in each of the plurality of radio wave detection units 42 corresponding to the plurality of subjects who spend at the care facility are emitted. And it becomes possible to detect the biometric information of a some subject correctly separately.

  Further, as in the above embodiment, the setting unit 4 individually sets the set temperatures of the plurality of temperature control units 46 so that the frequencies of the microwaves radiated from the plurality of radio wave detection units 42 are different.

  According to this configuration, each of the plurality of radio wave detection units 42 can emit a microwave having a frequency that does not cause an abnormal state such as radio wave interference or radio wave interference. Therefore, even if the specifications of the plurality of radio wave detection units 42 are such that the frequency of the emitted microwaves cannot be changed from the outside by setting or the like, it is possible to accurately detect the biological information of the plurality of subjects individually. .

  In addition, as in the second embodiment, when the microwave interference and interference generated by the plurality of radio wave detection units 42 are constantly monitored and the microwave interference and interference are detected, the setting unit 4 changes the previous set temperature of the temperature control unit 46.

  According to this configuration, for example, microwaves related to detection of biological information of a subject corresponding to the addition or position change of a bed and a sensor box (radio wave detection unit 42) in a living room, and the installation and use of another radio wave transmission device An abnormal condition can be discovered. Then, in response to the abnormal state, the frequency of the microwave that does not cause radio wave interference and radio wave interference is re-derived, and the radio wave detection unit 42 radiates the microwave of the frequency to each of the temperature control units 46. It is possible to reset the temperature individually.

  The temperature control unit 46 includes a Peltier element for changing the ambient temperature of the radio wave detection unit 42.

  According to this structure, the temperature control part 46 can be comprised with the functional member (thermoelectric element) which can be obtained comparatively easily. Accordingly, it is possible to accurately detect biological information of a plurality of subjects individually with a simple configuration.

  Each sensor box includes a control unit 43 that receives a command from the setting unit 4 and controls operations of the radio wave detection unit 42 and the temperature control unit 46. Then, the setting unit 4 transmits a setting command related to the set temperature of the temperature control unit 46 to the control unit 43. The control unit 43 outputs a current value corresponding to the set temperature to the temperature control unit 46 in response to the set command related to the set temperature received from the setting unit 4, and controls the operation of the temperature control unit 46.

  According to this configuration, the setting command related to the set temperature of the temperature control unit 46 is directly transmitted from the setting unit 4 (management server 2) to each sensor box. In the sensor box, the temperature control unit 46 can be easily controlled without executing special signal processing.

  The setting unit 4 transmits a setting command related to the frequency of the microwave radiated from the radio wave detection unit 42 to the control unit 43. The control unit 43 converts the setting command related to the frequency received from the setting unit 4 into a setting command related to the set temperature of the temperature control unit 46, and outputs a current value corresponding to the set temperature to the temperature control unit 46. The operation of the temperature control unit 46 is controlled.

  According to this configuration, a setting command related to the frequency of the microwave radiated from the radio wave detection unit 42 is transmitted from the setting unit 4 (management server 2) to each sensor box. Since the microwave frequency radiated by the radio wave detection unit 42 can be directly identified on the management server 2, the microwave frequency can be easily grasped and managed.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  For example, the microwave frequency to be radiated by the radio wave detection unit 42 of the sensor box shown in the above embodiment and the temperature setting value (for example, see FIG. 5) of the temperature control unit 46 for the setting are examples. However, it is not limited to these.

  Further, the thermoelectric element used for the temperature control unit 46 is not limited to the Peltier element, and other thermoelectric elements or functional members may be used. For example, a light emitting element such as an LED (Light Emitting Diode) used in the light projecting unit of the optical detecting unit 41 is also used as the temperature control unit 46, and the ambient temperature of the radio wave detecting unit 42 is changed using the heat generated by the light emitting element. You may do it. In this case, since it is not necessary to prepare a new thermoelectric element, it is possible to suppress an increase in members used, cost, and manufacturing man-hours, and it is also efficient.

  In addition, when there are multiple types of radio wave detectors with specifications that the microwave frequency cannot be changed directly from the outside and those that can be changed directly, temperature control is applied to the radio wave detector that cannot change the frequency directly. The frequency may be controlled via the unit, and the frequency may be directly controlled for the radio wave detection unit whose frequency can be directly changed. In this case, a conversion table of setting commands related to temperature control and setting commands related to frequency control is stored in advance in the control unit of each sensor box so that the two types of radio wave detection units need not be controlled separately. Then, the management server transmits a setting command related to either temperature or frequency to the sensor box, and the control unit of each sensor box converts the setting command into a setting command corresponding to the specification of each radio wave detection unit. It suffices that the radiated frequencies do not interfere with each other and interfere with each other.

  INDUSTRIAL APPLICABILITY The present invention can be used in a monitoring system for detecting an abnormality or the like of the health condition of a person spending at a care facility.

DESCRIPTION OF SYMBOLS 1 Watching system 2 Management server 3 Main control part 4 Setting part 5 Radio wave detection part setting list 11-24 Sensor box 41 Optical detection part 42 Radio wave detection part 43 Control part 46 Temperature control part

Claims (6)

A plurality of radio wave detectors that individually radiate and receive radio waves to detect biological information of the subject; and
A plurality of temperature control units arranged in close proximity to each of the plurality of radio wave detection units and capable of changing the ambient temperature of the radio wave detection unit;
A setting unit for individually setting a set temperature of the plurality of temperature control units;
With
The radio wave detection unit has a characteristic that the frequency of the radio wave radiated varies due to the influence of ambient temperature, and the setting unit includes a plurality of setting units so that the frequency of the radio wave radiated from each of the radio wave detection units does not interfere with each other and interfere with each other. A watching system characterized in that the set temperature of the temperature control unit is individually set.   The watching system according to claim 1, wherein the setting unit individually sets a set temperature of the plurality of temperature control units so that a frequency of the radio wave radiated from each of the plurality of radio wave detection units is different.   When the interference or interference of the radio waves radiated by a plurality of the radio wave detection units is constantly monitored and radio interference and radio interference are detected, the setting unit is set to a previous set temperature of the temperature control unit. The monitoring system according to claim 1, wherein the monitoring system is changed.   The watching system according to claim 1, wherein the temperature control unit includes a Peltier element for changing an ambient temperature of the radio wave detection unit. A control unit that receives a command from the setting unit and controls operations of the radio wave detection unit and the temperature control unit;
The setting unit transmits a setting command related to the set temperature of the temperature control unit to the control unit, and the control unit receives the setting command related to the set temperature received from the setting unit. An operation is controlled, The watching system in any one of Claims 1-4 characterized by the above-mentioned. A control unit that receives a command from the setting unit and controls operations of the radio wave detection unit and the temperature control unit;
The setting unit transmits a setting command related to the frequency of the radio wave radiated from the radio wave detection unit to the control unit, and the setting command related to the frequency received by the control unit from the setting unit is transmitted to the temperature control unit. The watch system according to any one of claims 1 to 4, wherein the operation of the temperature control unit is controlled by converting into a set command related to the set temperature.

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