JP2019149003A - Observation system and observation method - Google Patents

Abstract

To provide an observation system capable of improving reliability of the same and an observation method.SOLUTION: An observation system 1 for observing a person to be cared comprises: access points 20 installed at least at three or more different locations; an observation device 10 having a communication unit 120 in wireless communication with each access point 20 and a detection unit 110 for detecting an operation of the person to be cared; and a management apparatus 30 for communicating with each access point 20. Each access point 20 measures a first signal strength of a signal received from the monitoring device 10. The management apparatus 30 specifies a position of the monitoring device 10 based on information indicating the respective first signal strength measured by the respective access points 20.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a watching system and a watching method.

  Conventionally, a mat sensor that detects the entry and exit of a cared person and outputs a detection signal, a signal receiving unit that receives the detection signal, and the content of the signal received by the signal receiving unit care for the cared person A nursing care system including signal output means for outputting a command signal and signal distribution means for distributing a signal for instructing care based on the command signal when the contents are necessary is disclosed (Patent Literature) 1).

Japanese Patent Laid-Open No. 2003-260095

  In order for the caregiver to arrive at the cared person, the mat sensor and the room used by the cared person must be associated with each other. For example, when such a mat sensor is moved to another room, the association between the room to be moved and the mat sensor to be moved must be set again. It takes. Further, if there is a setting mistake or a setting omission, the caregiver may not be able to arrive at the care recipient.

  Therefore, an object of the present disclosure is to provide a watching system and a watching method that can improve the reliability of the watching system.

  In order to achieve the above object, a monitoring system according to one aspect of the present disclosure is a monitoring system that monitors a care recipient, at least three or more access points installed at different positions, and each of the access points A monitoring device that includes a communication unit that performs wireless communication and a detection unit that detects an operation of the care recipient, and a management device that communicates with each of the access points, and each of the access points includes the monitoring device. The management device determines the position of the monitoring device based on information indicating each first signal strength measured by each access point.

  Moreover, in order to achieve the said objective, the monitoring method which concerns on 1 aspect of this indication is a monitoring method which watches a care receiver, Comprising: At least 3 or more steps which communicate with the access point installed in a different position, A step of measuring a first signal strength of a signal received by each of the access points, and a step of specifying a position of the monitoring device based on information indicating the first signal strength measured by the access point .

  According to the present disclosure, the reliability of the watching system can be improved.

FIG. 1 is a block diagram illustrating a monitoring system according to an embodiment. FIG. 2 is a schematic diagram showing a watching system and a cared person. FIG. 3 is a schematic view illustrating a case where a monitoring device is moved in a facility using the monitoring system. FIG. 4 is a schematic view illustrating a method for specifying the position of the watching device. FIG. 5 is a flowchart showing the operation when the watching device according to the embodiment is moved. FIG. 6 is a flowchart showing a process of transmitting information prompting the care recipient to move to the first terminal device. FIG. 7 is a flowchart showing a process of transmitting information prompting the care recipient to move to the first terminal device.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Each of the embodiments described below shows a comprehensive or specific example. The numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of the constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, The overlapping description is abbreviate | omitted or simplified.

  Hereinafter, the watching system and the watching method according to the embodiment of the present disclosure will be described.

(Embodiment)
[Constitution]
A configuration of the watching system 1 according to the embodiment of the present disclosure will be described.

  FIG. 1 is a block diagram showing a watching system 1 according to the embodiment. FIG. 2 is a schematic diagram showing the watching system 1 and a cared person.

  As shown in FIGS. 1 and 2, the watching system 1 is a system that watches a cared person by imaging the cared person. In the monitoring system 1, when a predetermined operation of the care recipient is detected, it is transmitted to the first terminal device 11 possessed by a caregiver who is a staff of a hospital, an elderly facility, a care facility, etc. Recognize the state.

  The watching system 1 includes one or more watching devices 10, an access point 20, a management device 30, a first terminal device 11, and a second terminal device 12.

  The monitoring device 10 detects the care receiver's rising motion with respect to the bed, detects the care receiver's getting out of bed, detects the care receiver's fall and crouch, It is a device that detects whether a cared person enters or leaves a room. For example, the watching device 10 is used in a facility including a plurality of rooms used by a plurality of care recipients.

  The watching device 10 includes a detection unit 110, a communication unit 120, and a power supply unit 130.

  The detection unit 110 detects the operation of the care recipient. The detection unit 110 includes an image acquisition unit 111 and a body detection unit 112.

  The image acquisition unit 111 acquires a distance image in which a pixel value indicates a distance to an object by imaging a cared person, a bed, and the like. The distance image is an image in which the pixel value is a distance value from the image acquisition unit 111 to the object. In the image acquisition unit 111, as a technique for generating the distance image, for example, either a passive type that receives only light from the target region or an active type that receives light projected on the target region may be used. In the present embodiment, the image acquisition unit 111 is, for example, a TOF (Time Of Flight) camera, a distance image sensor, or the like. The image acquisition unit 111 includes, for example, a light projecting unit that projects intensity-modulated light onto a target region, and an imaging unit that receives intensity-modulated light reflected by an object. In the image acquisition unit 111, intensity modulated light obtained by modulating the light intensity with a modulation signal having a fixed period is projected onto the target area, and the time until the reflected light from the object existing in the target area is received is intensity modulated. You may detect as a phase difference of light projection / reception of light. In this embodiment, the target area referred to here is an area inside the room where the cared person is present.

  The image acquisition unit 111 has a function of converting a phase difference between light projection and reception of intensity-modulated light into a distance to an object. The light to be projected is near-infrared as light that is reflected by the surface of the object and is not perceived by a person, but may be visible light.

  The body detection unit 112 extracts a part of the human body from the distance image acquired by the detection unit 110. In the present embodiment, the body detection unit 112 focuses on the head of the human body and extracts the head from the distance image. However, the body detection unit 112 is not limited to the head, and may be, for example, a shoulder. For example, assuming that the shape of the head is a circular shape or an elliptical shape, the body detection unit 112 extracts a body region as a region of the cared person's human body from the distance image by, for example, the background difference method and the frame difference method, For example, a circular or elliptical Hough transform is performed from the extracted body region. Accordingly, the body detection unit 112 includes the cared person's head, for example, by calculating the cared person's head by pattern matching using a circular or elliptical shape of the head prepared in advance. Calculate the body area. The body detection unit 112 calculates a body region from the distance image. The body detection unit 112 outputs information indicating the calculated body region to the management device 30. The method for calculating the body region is not limited to this, and other known means may be used.

  The communication unit 120 of the monitoring device 10 is a communication module that communicates with each access point 20. The communication unit 120 transmits information indicating the predetermined operation of the cared person detected by the detection unit 110 to each access point 20.

  The power supply unit 130 is a main power supply of the watching device 10, and supplies AC power supplied from a commercial power source that is an external power supply to the entire watching device 10. When the power supply unit 130 is on, the power from the power supply unit 130 is supplied to the entire monitoring apparatus 10. When the power supply unit 130 is off, the supply of power to the entire watching device 10 is stopped.

  The access points 20 are installed at different positions in at least three places in a facility such as a hospital, an elderly facility, or a care facility. Each access point 20 is a device that relays communication between the monitoring device 10 and the first terminal device 11 and between the monitoring device 10 and the second terminal device 12. For wireless communication between each access point 20 and the monitoring device 10, each access point 20 and the first terminal device 11, and each access point 20 and the second terminal device 12, Wi-Fi (registered trademark) is used. ) Or other wireless LAN (Local Area Network) may be applied, or other wireless communication may be applied.

  As shown in FIG. 3, the access points AP <b> 1 to AP <b> 3 are arranged in the room B, the staff station, and the room G. FIG. 3 is a schematic view illustrating the case where the watching device 10 is transferred from the room B to the room G in the facility using the watching system 1. These access points AP1 to AP3 perform wireless communication with the monitoring device 10, the first terminal device 11, and the second terminal device 12, so that each first signal strength, each second signal strength, and each first signal strength. 3 Measure signal strength.

  Each access point AP <b> 1 to AP <b> 3 performs wireless communication with the monitoring device 10. Each of the access points AP <b> 1 to AP <b> 3 measures the first signal strength of a signal (also referred to as a beacon signal) received from the monitoring device 10. Each of the access points AP <b> 1 to AP <b> 3 transmits information indicating the measured first signal strength to the management device 30. The first signal strength means the radio wave strength.

  In addition, each of the access points AP <b> 1 to AP <b> 3 performs wireless communication with the first terminal device 11. Each access point AP <b> 1 to AP <b> 3 measures the second signal strength of the signal received from the first terminal device 11. Each of the access points AP <b> 1 to AP <b> 3 transmits information indicating the measured second signal strength to the management device 30. The second signal strength means the radio wave strength.

  Each access point AP <b> 1 to AP <b> 3 performs wireless communication with the second terminal device 12. Each of the access points AP <b> 1 to AP <b> 3 measures the third signal strength of the signal received from the second terminal device 12. Each of the access points AP <b> 1 to AP <b> 3 transmits information indicating the measured third signal strength to the management device 30. The third signal strength means the radio wave strength.

  As shown in FIG. 1, each access point 20 communicates with the monitoring device 10, the first terminal device 11, and the second terminal device 12 at predetermined time intervals. Thereby, each access point 20 measures each 1st signal strength, 2nd signal strength, and 3rd signal strength with respect to the monitoring apparatus 10, the 1st terminal device 11, and the 2nd terminal device 12. FIG.

  The management device 30 communicates with each access point 20. The management device 30 receives information indicating each first signal strength, information indicating each second signal strength, and information indicating each third signal strength from each access point 20. In addition, since the identifier which identifies each access point 20 is added to the information which shows 1st signal strength, it can identify which access point 20 and the signal strength of the monitoring apparatus 10 are. The same applies to information indicating the second signal strength and information indicating the third signal strength.

  The management device 30 includes a position specifying unit 31, an information processing unit 32, and a storage unit 33.

  The position specifying unit 31 specifies the positions of the watching device 10, the first terminal device 11, and the second terminal device 12 by a three-point positioning method. The position specifying unit 31 specifies the positions of the monitoring device 10, the first terminal device 11, and the second terminal device 12 by a three-point positioning method, but is not limited thereto, and specifies the positions of these devices. Other known methods may be used as long as they can be used.

  A method for specifying the positions of the watching device 10, the first terminal device 11, and the second terminal device 12 will be described. FIG. 4 is a schematic view illustrating a method for specifying the position of the watching device 10.

  As illustrated in FIGS. 1 and 4, the position specifying unit 31 specifies the position of the monitoring device 10 based on information indicating each first signal intensity measured by each access point 20.

  The position specifying unit 31 calculates the distance between each of the access points AP1 to AP3 and the monitoring device 10 using Expression (1) based on the information indicating the first signal strength.

_{RSSI (r) = A-10Blog} 10 (r) (1)

  RSSI (r) is the radio wave intensity at each of the access points AP1 to AP3, A is the radio wave intensity in the vicinity of 1 m from the monitoring device 10, B is a constant indicating the attenuation rate of the radio wave, and r (r1, r2 , R3) is the distance between each of the access points AP1 to AP3 and the watching device 10.

  The position specifying unit 31 calculates the distance between each access point 20 and the watching device 10 using Expression (1). The position specifying unit 31 specifies the position of the watching device 10 by using a three-point positioning method based on each calculated distance.

  In addition, the position specifying unit 31 specifies the position of the first terminal device 11 based on information indicating each second signal strength measured by each access point 20. Specifically, the position specifying unit 31 calculates the distance between each access point 20 and the first terminal device 11 using Expression (1) based on the information indicating the second signal strength. The position specifying unit 31 specifies the position of the first terminal device 11 by using a three-point positioning method based on each calculated distance. The position specifying unit 31 outputs first position information indicating the position of the first terminal device 11 to the information processing unit 32.

  Further, the position specifying unit 31 specifies the position of the second terminal device 12 based on information indicating each third signal intensity measured by each access point 20. Specifically, the position specifying unit 31 calculates the distance between each access point 20 and the second terminal device 12 using Expression (1) based on the information indicating the third signal strength. The position specifying unit 31 specifies the position of the second terminal apparatus 12 by using a three-point positioning method based on each calculated distance. The position specifying unit 31 outputs second position information indicating the position of the second terminal device 12 to the information processing unit 32.

  The position of the monitoring device 10, the position of the first terminal device 11, and the position of the second terminal device 12 are relative positions with respect to each access point 20 or facility.

  In addition, when the watching device 10 is moved to another room, the position specifying unit 31 rewrites the information indicating the room of the watching device 10 before the transfer to information indicating the room to be transferred.

  The information processing unit 32 transmits information prompting the care recipient to move to the first terminal device 11 according to the position of the first terminal device 11. For example, the information processing unit 32 monitors the monitoring device 10 (that is, the information indicating the predetermined operation of the care recipient to the management device 30 with respect to the first terminal device 11 that is present closest) , Information that prompts the movement of the care recipient who needs care) is transmitted. The information processing unit 32 generates information that prompts the care recipient to move to the source, and extracts the first terminal device 11 that is present closest to the watching device 10 using the generated information that prompts the movement. . And the information processing part 32 transmits the information which prompts the care receiver to move to the extracted first terminal device 11. Thereby, the caregiver can go to the room where the cared person who performed the predetermined | prescribed operation | movement exists in the room quickly.

  Here, the information prompting the movement is, for example, a message “Mr. A is going to get up. Please go to room XX”. The information processing unit 32 generates such a message and transmits the generated message to the first terminal device 11.

  The information processing unit 32 transmits information prompting the care recipient to move to the first terminal device 11 according to the position of the second terminal device 12. For example, the caregiver may need to go to the caregiver, such as when the caregiver leaves the bed or the caregiver leaves the room.

  Specifically, the information processing unit 32 determines whether or not the second terminal apparatus 12 has moved outside the preset area. The area set in advance is, for example, an area set in advance by the staff, such as a room in which the care recipient resides. Based on the second position information acquired from the position specifying unit 31, the information processing unit 32 determines whether or not the cared person has moved outside this area. When the information processing unit 32 determines that the second terminal device 12 has moved outside the preset area, the first terminal device that is closest to the second terminal device 12 based on the first position information. 11 is extracted. And the information processing part 32 transmits the information which prompts the care receiver to move to the extracted first terminal device 11. Thus, in this watching system 1, in order to detect that the cared person moves out of the preset area, for example, the situation of the cared person's habit or falling is suppressed.

  The information processing unit 32 is another first terminal device 11 other than the first terminal device 11 that has transmitted the information prompting the movement when there is no response from the first terminal device 11 for a predetermined period or more, and the care receiver's Information that prompts movement to the care receiver is transmitted to another first terminal device 11 that is present closest to the monitoring device 10 that has been notified of information indicating a predetermined operation. The information processing unit 32 performs this process for the number of first terminal devices 11 existing. If there is no response from all the first terminal apparatuses 11, this process is terminated.

  The information processing unit 32 stores information (also referred to as a table) in which the first signal intensity measured for each room is associated with each room (also referred to as a table) in the storage unit 33. For example, if this information is stored in the storage unit 33, when the watching device 10 is moved to another room, the room in which the watching device 10 is moved is used depending on the signal strength between each access point 20 and the watching device 10. Can be determined.

  The storage unit 33 stores information in which each room is associated with the first signal strength. The storage unit 33 stores information indicating the location where each access point 20 exists. When the monitoring device 10 is moved to another room, the storage unit 33 rewrites the information indicating the room of the monitoring device 10 to information indicating the room to which the monitoring device 10 is moved.

  The first terminal device 11 performs wireless communication with the management device 30 via each access point 20. The first terminal device 11 is a communication device such as a tablet terminal or a smartphone, and is mainly possessed by a caregiver. The 1st terminal device 11 will display on a display part, if the information which accelerates | stimulates the movement to a care receiver is acquired from the management apparatus 30. FIG.

  The second terminal device 12 is a terminal possessed by the care recipient and performs wireless communication with the management device 30 via each access point 20. The second terminal device 12 is a communication device such as a wearable terminal, a tablet terminal, or a smartphone that has a radio frequency (RF) tag or the like that is worn on a body or clothes by a care recipient.

  The operation of the watching system 1 and the watching method will be described.

[Operation 1]
The operation when the monitoring device 10 is moved will be described. FIG. 5 is a flowchart showing the operation when the watching device 10 according to the embodiment is moved.

  First, in this watching system 1, initial setting is performed in advance. As an initial setting, the first signal strength between the monitoring device 10 and each access point 20 is measured for each room. Specifically, the user arranges the watching device 10 for each room. For example, in the room A, the management device 30 measures the first signal strength of the monitoring device 10 and each access point 20 and stores the measured first signal strength in the storage unit 33. Similarly, in another room, the first signal strength between the monitoring device 10 and each access point 20 is measured, and the measured first signal strength is stored in the storage unit 33. Thus, the first signal strengths of the monitoring device 10 and each access point 20 are measured for all the rooms, and the measured first signal strengths are stored in the storage unit 33. Thus, the storage unit 33 stores information indicating the first signal intensity measured by each access point 20 and information associating each room with each other.

  Next, for example, when the watching device 10 is moved from the room B to the room D, each access point 20 communicates with the watching device 10 (an example of a process of communicating with the access point). Each access point 20 measures the first signal strength of the signal received from the monitoring device 10 (S1). Each access point 20 transmits information indicating the measured first signal strength to the management device 30. Step S1 is an example of a step of measuring the first signal intensity.

  Next, the position specifying unit 31 of the management device 30 specifies the position of the watching device 10 based on information indicating each first signal intensity measured by each access point 20 (S2). Step S <b> 2 is an example of a process of specifying the position of the watching device 10.

  Next, the position specifying unit 31 rewrites the information indicating the room of the watching device 10 before the transfer stored in the storage unit 33 into the information indicating the room to which the watching device 10 is transferred (S3). And the watching system 1 complete | finishes this process. Information indicating a room means a room number or the like.

  The monitoring system 1 performs such processing at predetermined time intervals, so that even if the monitoring device 10 is moved, a new room is automatically specified, and information indicating the room of the transfer destination monitoring device 10 is stored in the storage unit 33. To store. Thereby, the caregiver does not need to set the location of the transfer destination for each transfer.

[Operation 2]
The process of transmitting information prompting the care recipient to move to the first terminal device 11 will be described. FIG. 6 is a flowchart illustrating a process of transmitting information that prompts the first terminal device 11 to move to the care recipient.

  As shown in FIG. 6, first, each access point 20 measures the second signal strength of the signal received from the first terminal apparatus 11 (S11).

  Next, the management device 30 specifies the position of the first terminal device 11 based on information indicating each second signal strength measured by each access point 20 (S12).

  Next, the management device 30 extracts the first terminal device 11 that is present closest to the watching device 10. The management device 30 transmits information for urging the care recipient to move to the extracted first terminal device 11 (S13). In this case, the management device 30 does not transmit information that prompts the other first terminal device 11 to move to the care recipient.

  Next, the management device 30 determines whether or not there is a response for a predetermined period or more from the first terminal device 11 that has received the information that prompts the care recipient to move to in step S13 (S14).

  If there is no response from the first terminal device 11 for a predetermined period or longer (Yes in S14), the management device 30 performs a predetermined operation of the care recipient at another first terminal device 11 other than the first terminal device 11 that does not respond. Is transmitted to the first terminal device 11 that is closest to the watching device 10 that has been notified of the information indicating that the care recipient is moved (S15). The management device 30 performs this process for the number of the first terminal devices 11 existing. If there is no response from all the first terminal devices 11, this process is terminated.

  On the other hand, when there is a response from the first terminal device 11 within a predetermined period (No in S14), the management device 30 ends this process. This is because it is considered that the caregiver went to the care recipient.

[Operation 3]
A description will be given of a process of transmitting, to the first terminal device 11, information prompting the care recipient to move when the care receiver is wearing the second terminal device 12. FIG. 7 is a flowchart illustrating a process of transmitting information that prompts the first terminal apparatus 11 to move to the care receiver.

  As shown in FIG. 7, first, each access point 20 measures the third signal strength of the signal received from the second terminal apparatus 12 (S21).

  Next, the position specifying unit 31 specifies the position of the second terminal apparatus 12 based on the information indicating the third signal strength measured by each access point 20 (S22).

  Next, the information processing section 32 determines whether or not the second terminal device 12 has moved outside the preset area (S23). That is, the information processing unit 32 determines whether or not the cared person has moved outside the area preset by the staff.

  If the information processing unit 32 determines that the second terminal apparatus 12 has not moved outside the preset area (No in S23), the process of step S23 is repeated.

  On the other hand, when the information processing unit 32 determines that the second terminal device 12 has moved out of the preset area (Yes in S23), the information processing unit 32 is closest to the second terminal device 12 based on the first position information. The first terminal device 11 is extracted. The information processing unit 32 transmits information that prompts the care receiver to move to the extracted first terminal device 11 (S24). In this case, the information processing unit 32 does not transmit information that prompts the other first terminal device 11 to move to the care recipient.

  Next, the information processing unit 32 determines whether or not there is a response for a predetermined period or more from the first terminal device 11 that has received the information prompting the care recipient to move to the source in step S23 (S25).

  When there is no response from the first terminal device 11 for a predetermined period or longer (Yes in S25), the information processing unit 32 is another first terminal device 11 other than the first terminal device 11 having no response, and the management device 30. Of the information indicating the movement of the care recipient to another first terminal device 11 that is closest to the watching apparatus 10 is transmitted to the care receiver. (S26). The information processing unit 32 performs this process as many as the number of the first terminal devices 11 present. If there is no response from all the first terminal devices 11, this process is terminated.

  On the other hand, when there is a response from the first terminal device 11 within a predetermined period (No in S25), the information processing section 32 ends this process. That is, it is considered that the caregiver is headed for the care recipient.

[Function and effect]
Next, the effect of the watching system 1 and the watching method in this Embodiment is demonstrated.

  As described above, the watching system 1 according to the present embodiment is the watching system 1 that watches over a care recipient, and includes at least three or more access points 20 installed at different positions, and each access point 20. The monitoring apparatus 10 which has the communication part 120 which carries out radio | wireless communication, and the detection part 110 which detects a care receiver's operation | movement, and the management apparatus 30 which communicates with each access point 20 are provided. Each access point 20 measures the first signal strength of the signal received from the monitoring device 10. And the management apparatus 30 pinpoints the position of the monitoring apparatus 10 based on the information which shows each 1st signal strength which each access point 20 measured.

  According to this, each access point 20 measures the first signal strength of the signal received from the monitoring device 10. The management device 30 specifies the position of the monitoring device 10 based on information indicating each first signal intensity measured by each access point 20. Even if the monitoring device 10 is moved from the position where the monitoring device 10 is installed to another position, the first signal strength between each access point 20 and the monitoring device 10 at the transfer destination is calculated, and the management device 30 receives each first signal. The position of the watching device 10 can be automatically specified based on the strength.

  Therefore, since the cared person can be watched more reliably, the reliability of the watch system 1 can be improved.

  In particular, in this watching system 1, since the position of the transfer destination of the watching device 10 is automatically specified, there is no need for the caregiver to set the position of the transfer destination again, and there is a situation where the caregiver makes a setting mistake or forgets to set it. It becomes difficult to do. For this reason, when the watching device 10 is moved to another room, the position of the watching device 10 and the transfer destination room can be easily associated with each other.

  In addition, the watching method according to the present embodiment is a watching method for watching a cared person, the step of communicating with at least three or more access points 20 installed at different positions, and each access point 20 A step of measuring a first signal strength of a signal to be received, and a step of specifying the position of the watching device 10 based on information indicating the first signal strength measured by the access point 20.

  Even in this method, the same effects as those of the watching device 10 described above can be obtained.

  Moreover, the watching system 1 according to the present embodiment further includes a first terminal device 11 that performs wireless communication with the watching device 10. Each access point 20 further measures the second signal strength of the signal received from the first terminal device 11. Furthermore, the management device 30 specifies the position of the first terminal device 11 based on information indicating each second signal strength measured by each access point 20. Then, the management device 30 transmits information prompting the care recipient to move to the first terminal device 11 according to the position of the first terminal device 11.

  According to this, each access point 20 further measures the second signal strength of each signal received from the first terminal apparatus 11. The management device 30 identifies the position of the first terminal device 11 based on information indicating each second signal strength measured by each access point 20. By specifying the position of the first terminal device 11, the management device 30 transmits information prompting the care recipient to move to the first terminal device 11 according to the position of the first terminal device 11. . For example, when the caregiver who possesses the first terminal device 11 is present in the care recipient, the caregiver may not transmit information that prompts the caregiver to move to the care recipient. . Moreover, when the caregiver who possesses the 1st terminal device 11 does not exist in the care receiver, information which prompts the care worker to move to the care receiver can be transmitted. Thus, by grasping the position of the caregiver, the caregiver can be prompted to move to the care receiver.

  The watching system 1 according to the present embodiment further includes a first terminal device 11 that performs wireless communication with the watching device 10 and a second terminal device 12 that the cared person has. Each access point 20 further measures the third signal strength of the signal received from the second terminal apparatus 12. Furthermore, the management device 30 specifies the position of the second terminal device 12 based on information indicating each third signal strength measured by each access point 20. Then, the management device 30 transmits information prompting the care recipient to move to the first terminal device 11 according to the position of the second terminal device 12.

  According to this, each access point 20 further measures the third signal strength of each signal received from the second terminal apparatus 12. The management device 30 identifies the position of the second terminal device 12 based on information indicating each third signal strength measured by each access point 20. By specifying the position of the second terminal device 12, the management device 30 transmits information prompting the care recipient to move to the first terminal device 11 according to the position of the second terminal device 12. . For example, when the caregiver who possesses the first terminal device 11 is present in the care recipient, the caregiver may not transmit information that prompts the caregiver to move to the care recipient. . Moreover, when the caregiver who possesses the 1st terminal device 11 does not exist in the care receiver, information which prompts the care worker to move to the care receiver can be transmitted. Thus, by grasping the position of the cared person, the caregiver can be prompted to move to the cared person.

  The watching system 1 according to the present embodiment further includes a storage unit 33 that measures the first signal intensity for each room and stores information in which each room is associated with the first signal intensity.

  According to this configuration, the management device 30 stores information in which the first signal intensity for each room is associated with each room in the storage unit 33. For this reason, compared with the case where the information which shows the distance from each access point 20 to the monitoring apparatus 10 is simply stored in the memory | storage part 33, the room where the care receiver who needs watching exists exists easily. Can do.

(Other variations)
As mentioned above, although this indication was explained based on an embodiment, this indication is not limited to the above-mentioned embodiment.

  For example, in the monitoring system according to the above-described embodiment, the monitoring device can be detachably arranged with respect to the construction material or the like. For this reason, the currently installed monitoring device can be easily moved to another room.

  Moreover, in the monitoring system and the monitoring method according to the above-described embodiment, the management device receives each first signal strength, each second signal strength, and each third signal strength, and each of the position specifying units receives each of the third signal strengths. The distance between the access point and the monitoring device, the distance between each access point and the first terminal device, and the distance between each access point and the second terminal device are calculated. The access point may have an arithmetic unit having a function of calculating these distances using Equation (1). That is, the computing unit calculates the distance between each access point and the monitoring device based on each first signal strength, and each access point and the first terminal device based on each second signal strength. The distance between each access point and the second terminal device is calculated based on each third signal strength. In this case, the first distance information indicating the distance between each access point and the monitoring device, calculated by each access point, and each distance indicating the distance between each access point and the first terminal device You may transmit 2nd distance information and each 3rd distance information which shows the distance between each access point and a 2nd terminal device to a management apparatus. Accordingly, the position specifying unit of the management device can detect the positions of the monitoring device, the first terminal device, and the second terminal device based on each first distance information, each second distance information, and each third distance information. May be specified.

  Moreover, in the monitoring system and the monitoring method according to the above-described embodiment, the management device may only specify the position of the monitoring device based on information indicating each first signal intensity measured by each access point. For this reason, in the watching system and the watching method, measurement of the second signal strength and the third signal strength is not an essential constituent requirement.

  In the monitoring system and the monitoring method according to the above embodiment, the management device may be stored in the access point. That is, communication between the management device and the access point may be either wired communication or wireless communication.

  In addition, each processing unit included in the monitoring system according to the above-described embodiment is typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.

  Further, the circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. An FPGA (Field Programmable Gate Array) that can be programmed after manufacturing the LSI or a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.

  In each of the above embodiments, each component may be configured by dedicated hardware or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

  Moreover, all the numbers used above are illustrated for specifically explaining the present disclosure, and embodiments of the present disclosure are not limited to the illustrated numbers.

  In addition, division of functional blocks in the block diagram is an example, and a plurality of functional blocks can be realized as one functional block, a single functional block can be divided into a plurality of functions, or some functions can be transferred to other functional blocks. May be. In addition, functions of a plurality of functional blocks having similar functions may be processed in parallel or time-division by a single hardware or software.

  In addition, the order in which the steps in the flowchart are executed is illustrated in order to specifically describe the present disclosure, and may be in an order other than the above. Also, some of the above steps may be executed simultaneously (in parallel) with other steps.

  In addition, this embodiment includes a form obtained by making various modifications conceived by those skilled in the art to the embodiment, and a form realized by arbitrarily combining the components and functions in the embodiment without departing from the gist of the present disclosure. Included in the disclosure.

DESCRIPTION OF SYMBOLS 1 Watching system 10 Watching apparatus 11 1st terminal device 12 2nd terminal device 20, AP1, AP2, AP3 Access point 30 Management apparatus 33 Storage part 110 Detection part 120 Communication part

Claims (5)

A watch system for watching a cared person,
At least three or more access points installed in different positions;
A monitoring device having a communication unit that wirelessly communicates with each of the access points, and a detection unit that detects an operation of the care recipient;
A management device that communicates with each of the access points;
Each of the access points measures a first signal strength of a signal received from the monitoring device,
The monitoring device identifies a position of the monitoring device based on information indicating each first signal intensity measured by each access point. And a first terminal device that performs wireless communication with the watching device,
Each of the access points further measures a second signal strength of a signal received from the first terminal device,
The management device is:
Identifying the position of the first terminal device based on information indicating each second signal strength measured by each access point;
The monitoring system according to claim 1, wherein information that prompts the care recipient to move to the first terminal device is transmitted to the first terminal device according to a position of the first terminal device. A first terminal device that performs wireless communication with the watching device;
A second terminal device possessed by the care recipient,
Each of the access points further measures a third signal strength of a signal received from the second terminal device,
The management device is:
Identifying the position of the second terminal device based on information indicating each third signal strength measured by each access point;
The monitoring system according to claim 1, wherein information that prompts the care recipient to move to the first terminal device is transmitted to the first terminal device according to a position of the second terminal device. The monitor according to claim 1, further comprising a storage unit that measures the first signal intensity for each room and stores information in which each room is associated with the first signal intensity. system. A method of watching over a cared person,
Communicating with access points installed at different positions in at least three locations; and
Measuring a first signal strength of a signal received by each of the access points;
And a step of specifying a position of the watching device based on information indicating the first signal intensity measured by the access point.

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