JPH11224390A - Device and system for monitoring person staying in room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily report abnormality to some other person by issuing an alarm when a person stays in a room for a long time. SOLUTION: This monitoring system is provided with a passage sensor 31 for detecting the moving direction of a human body at the respective entrances/ exits of one or plural monitoring domains having one or plural entrances/exits, a staying person monitoring device 39 for measuring the time for a person to continuously stay in a room inside the monitoring domain and issuing an alarm signal according to the time by discriminating whether the human body enters/leaves the monitoring domain based on a signal from the passage sensor 31, a central control unit 35 for integrally controlling the monitoring device 39, and a LAN 34 for communication. According to an alarm signal issued by the discrimination circuit 32, the central control unit 35 displays the condition of presence in the monitoring domain and/or issues an alarm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an occupancy monitoring device and an occupancy monitoring system for monitoring the occupancy of a person in a monitoring area using a passage sensor.

[0002]

2. Description of the Related Art Conventionally, infrared sensors such as pyroelectric sensors and thermopiles, photoelectric switches, and ultrasonic sensors have been used to detect the presence of a human body in a specific area. In particular, there is a device that detects a human body by combining a pyroelectric sensor having different detection ranges and detection sensitivities with a thermopile, as disclosed in JP-A-1-39581. Further, as in Japanese Patent Application Laid-Open No. 6-242255, there is a device that detects a human body by combining a pyroelectric sensor having a different detection range and a different detection sensitivity with a distance measurement sensor. These are for detecting the human body that has entered a toilet or the like and controlling the lighting of the lighting equipment.A pyroelectric sensor requires a sensor with a wide detection area, and a thermopile compensates for room temperature. Have not done.

Further, a multi-element element of a pyroelectric sensor is arranged in parallel with the moving direction to detect a passing human body, and a passing human body or a plurality of infrared beam sensors for detecting the number of passing persons and the moving direction is used. There is a pass sensor that detects the number of people passing and the moving direction, or a pass sensor that detects the number of people passing and the moving direction by detecting the passing human body using the Doppler effect of the ultrasonic sensor. These are installed on the ceiling of the entrance of the room, etc.
The number of occupants in the room can be detected by sensing the number of passers and the direction of movement.

[0004]

However, these passage sensors for detecting the number of occupants only detect the number of occupants, and determine what the number of occupants is. I haven't.

On the other hand, in a toilet in a hospital or the like, if a patient enters for a long time, the safety of the patient is a concern, and it is necessary to check whether the patient has been in the toilet for a long time. Was checked by patrols and nurses, and it took time and labor. There has been no simple and easy low-cost system for detecting such a patient entering a monitoring area such as a toilet and monitoring the occupancy status.

[0006] Furthermore, in the hospital room, if the sick person wanders at night, the safety of the patient is a concern. Conventionally, to check whether the patient has left the hospital room, a patrol or a nurse checks. There has been no simple, easy, and low-cost system that detects when such a patient has left or returned from a hospital room and monitors the occupancy status.

[0007] Therefore, there has been a demand for the development of a simple, easy, and low-cost system for monitoring the occupancy of a monitoring area such as a toilet in a hospital or a nursing facility.

[0008] In consideration of the above-described problems, the present invention provides a highly reliable system that can issue a warning when an occupant stays in a room for a long time, and can easily notify other people of an abnormality. It is an object of the present invention to provide a low cost occupancy monitoring device and a occupancy monitoring system.

[0009]

In order to solve the above-mentioned problems, the present invention according to claim 1 comprises a pass sensor for detecting a moving direction of a human body at each entrance of a monitoring area having one or more entrances. Based on a signal from the passage sensor, by determining whether the human body enters or leaves the monitored area, the time that a person continuously stays in the monitored area is measured, and an alarm is issued according to the time. A occupancy monitoring device comprising: a determination circuit that emits a signal.

According to a second aspect of the present invention, when the determination circuit determines that a person is no longer in the monitoring area in a state where the alarm signal is issued, the determination signal is automatically canceled. The occupancy status monitoring device according to claim 1, wherein:

According to a third aspect of the present invention, there is provided an alarm generating means for issuing an alarm according to the alarm signal, and an alarm canceling means for canceling the alarm according to automatic cancellation of the alarm signal or an operation on the machine side. Claim 1 characterized by the following:
Or the occupancy monitoring device according to 2.

According to a fourth aspect of the present invention, when the output signal corresponding to entry into the monitored area is output from the passage sensor, the determination circuit sets the initial value to 0 as the number of occupants in the room. When the output signal corresponding to the exit from the monitoring area is output from the passage sensor, -1 is added, and when the number of occupants is greater than 0, it is determined that a person is present. 4. The method according to claim 1, wherein
The occupancy status monitoring device according to any one of the above.

According to a fifth aspect of the present invention, the number of occupants is:
It is set to the initial value at the start of monitoring, and 0
The occupancy status monitoring device according to claim 4, wherein when the value becomes smaller, the initial value is reset.

According to a sixth aspect of the present invention, the passage sensor includes:
4. A pyroelectric infrared sensor.
5. The occupancy status monitoring device according to any one of 5.

According to a seventh aspect of the present invention, the occupancy status monitoring device according to any one of the first to sixth aspects is provided for each of one or a plurality of the monitoring areas, and the occupancy status monitoring device is integrated. And a communication unit for performing communication between each of the occupancy status monitoring devices and the central control device, wherein the central control device performs the determination of each of the occupancy status monitoring devices. An occupancy monitoring system that displays and / or warns the occupancy in the monitored area according to the alarm signal generated by a circuit.

According to an eighth aspect of the present invention, in the occupancy room according to the seventh aspect, the central control unit and the communication means are also used for an existing nurse call system or another centralized management system. It is a situation monitoring system.

According to a ninth aspect of the present invention, when the central control device and the communication means are used also as those of an existing nurse call system, the central control device sets each of the monitoring areas in accordance with the alarm signal. The occupancy status monitoring system according to claim 8, wherein the provided individual corridor light or the individual alarm lamp of a nurse center blinks or issues an alarm.

According to a tenth aspect of the present invention, the blinking or alarm alarm is canceled by operating a blinking release button of the individual corridor light, or an individual alarm lamp blinking release button or alarm alarm release button of the nurse center. 10. The occupancy status monitoring system according to claim 9, wherein the monitoring of the monitoring area is automatically restarted.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) First, the first embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings.

FIG. 1 is a schematic plan view showing an occupancy status monitoring apparatus according to the first embodiment of the present invention. As shown in FIG. 1, the occupancy status monitoring device in the present embodiment
A passage sensor 11 composed of a thermal infrared sensor installed on the ceiling of an entrance 15 of the monitoring area 13, a determination circuit 16 for determining whether or not a human body has entered or exited the room through this entrance, based on an output signal thereof; Installed on the hallway 14 side,
Alarm generating means 12 for generating an alarm.
As the pass sensor 11, for example, a pyroelectric one-dimensional array element is installed in such a manner that the array direction of the array is parallel to the pass direction, so that the direction of the human body and the number of persons passing under the sensor can be known. Use a sensor. The alarm generating means 12 notifies other people of the alarm by light and / or sound, such as an alarm lamp or an alarm.

Next, the operation of the embodiment will be described.

At the same time as the monitoring of the monitoring area 13 is started, the passage sensor 11 starts detecting the direction of the human body passing under the sensor and the number of persons. The determination circuit 16 includes the pass sensor 1
When the human body enters the monitoring area 13 according to the output signal of 1 and it is determined that the person does not leave the room even after a certain period of time, for example, 5 minutes or more, the alarm generating means 12 is activated to generate an alarm and notify another person. Can be.

In the above, the stay time in the monitoring area determined to be abnormal may be determined according to the target area. For example, when the monitoring area 13 is a toilet in a hospital or a nursing facility, it is generally desirable that the monitoring time be 4 to 10 minutes. When the monitoring area 13 is a cash corner of a financial institution, it is desirable that the monitoring time be within 5 minutes.

As a method for determining whether or not a human body has entered or exited the room after passing through the entrance, for example, the following method can be considered. The passage sensor 11 is an infrared sensor (pyroelectric sensor), and the infrared sensor is interlocked, and the occupancy of the human body is determined by a binarization method in which a threshold value is set and a background averaging method in which the output from the floor is averaged. By making a determination, it is possible to detect in which direction the human body has passed through the entrance.

As a method of determining whether or not a person is present in the monitored area, a numerical value of the occupied person whose initial value is 0 is set, and the output signal from the passage sensor 11 is set in the monitored area 13. When a person enters the room, +1 is added to the number of occupants, and -1 is added when the person leaves the room. If the number of occupants is greater than 0, it is determined that the entered human body has not left the room. Is what you do. In this way, when the number of occupants does not become 0 after a certain period of time, the judgment circuit 1
Reference numeral 6 denotes an operation of the alarm generating means 12.

In the above determination method, when the present apparatus specifies and uses a monitoring time zone, it is assumed that a person is already present in the monitoring area when the monitoring start signal is turned on. When the occupant leaves the room, the occupant value becomes smaller than 0. At this time, the occupant value may be reset to the initial value of 0. It is possible.

In the present embodiment, when a plurality of persons enter the monitoring area in succession, the determination circuit determines that the first person is continuously in the monitoring area even if each person's use time is short. When a certain period of time elapses, a warning signal is issued, so that monitoring can be performed more safely.

By doing so, it is possible to detect an abnormal use state in the monitoring area, and it is possible to perform accurate and highly reliable situation monitoring. Furthermore, by centrally processing and managing the occupancy status monitoring device according to the present embodiment, a monitoring area status monitoring system that is inexpensive can be provided.

As described above, according to the present embodiment, the passage sensor is installed on the ceiling of the entrance of the monitored area, detects infrared rays near the heads of the entering and exiting persons, and uses this output to enter the room of the human body.・ A high-precision, highly-reliable location that can ensure safety in the monitored area by detecting leaving the room and informing other people of the monitored area where the human body has been in the room for a certain period of time or more. A room condition monitoring device can be provided.

Although the present embodiment has been described as using a thermal infrared sensor as the passage sensor, the present invention is not limited to this. For example, a sensor using an infrared beam or an ultrasonic sensor may be used. May be used. Also, the passage sensor has been described as being installed on the ceiling of the doorway of the monitoring area, but is not limited to this, and may be any sensor that can detect the moving direction of the human body at the doorway.

Also, the occupancy status monitoring apparatus according to the present embodiment has been described as including the alarm generating means of the present invention. However, as described above, collective centralized processing / management is performed at another place. In this case, it is not necessary to provide the alarm generation means, that is, at least the determination circuit of the present invention may generate an alarm signal.

Second Embodiment Next, a second embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings.

FIG. 2 is a schematic plan view showing an occupancy monitoring device according to a second embodiment of the present invention. The occupancy monitoring device according to the present embodiment assumes a toilet as a monitoring area. The occupancy status monitoring apparatus according to the present embodiment has the above-described first aspect except that the occupancy status monitoring apparatus has a plurality of entrances and exits to the monitored area and includes an alarm canceling unit.
This is the same as the occupancy status monitoring device in the embodiment.
Therefore, in the present embodiment, components that are not particularly described are assumed to be the same as those in the first embodiment, and the components having the same names as those in the first embodiment will be the same as those in the first embodiment unless otherwise described. It has the same function as the embodiment.

As shown in FIG. 1, the occupancy status monitoring apparatus according to the present embodiment includes a passage sensor 21 composed of a thermal infrared sensor installed on the ceiling of a plurality of entrances 26 of a toilet 25 as a monitoring area. Based on the output signal, a judgment circuit 22 for judging whether or not the human body has entered or exited the room through the doorway, an alarm generation means 23 installed on the corridor 24 side for generating an alarm, and an alarm cancellation means 27 for canceling the alarm Is provided.

Next, the operation of the embodiment will be described.

At the same time as the monitoring of the toilet 25 is started,
The plurality of passage sensors 21 start detecting the direction of the human body passing under the sensors and the number of persons. The determination circuit 22 activates the alarm generating means 23 when a person enters the toilet 25 and determines that the person does not leave the room even after a certain period of time, based on the output signals of the plurality of passage sensors 21, issues an alarm, and Inform others. At this time, when the caregiver has confirmed the safety of the care receiver (the human body who entered the room) in the toilet 25,
When the caregiver operates the alarm canceling means 27 on the machine side, the issued alarm can be canceled. On the other hand, if the care receiver leaves the toilet before the caregiver arrives at the toilet 25, the determination circuit 22 determines from the output signal of the passage sensor 21 that there is no more person in the toilet 25, and the alarm canceling means 27. Thereby, the warning can be automatically canceled and the caregiver can be notified. In other words, it is possible to alert the caregiver by issuing an alarm to the restroom where the cared person has been in the room for a certain period of time or more, and to notify the caregiver by stopping the alarm when the cared person is no longer in the room. You can do it.

By doing so, it is possible to monitor the occupancy status of the human body in the toilet, and it is possible to perform accurate and highly reliable occupancy status monitoring. Furthermore, by centrally processing and managing the occupancy status monitoring device according to the present embodiment, a monitoring area status monitoring system that is inexpensive can be provided.

As described above, according to the present embodiment, the passage sensor is installed on the ceiling of the entrance of the toilet, detects infrared rays near the head of the person entering and exiting the toilet, and based on this output, the human body enters the room.・ Detects leaving the room, and informs other people of the location of the toilet where the toilet user has been in the room for a certain period of time,
By stopping the alarm when the toilet user leaves the room,
Safety in the toilet can be ensured, and a highly accurate and highly reliable toilet occupancy monitoring device can be provided.

Although the occupancy status monitoring apparatus according to the present embodiment has been described as including the alarm canceling means of the present invention, the centralized monitoring is performed similarly to the alarm generating means described in the first embodiment. If the processing and management are performed in another place, it is not necessary to have the alarm release means.
In other words, at least when the determination circuit of the present invention determines that a person is no longer in the monitored area in a state where the alarm signal is issued, the alarm signal only needs to be automatically released.

(Third Embodiment) Next, a third embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings.

FIG. 3 is a schematic configuration diagram showing an occupancy status monitoring system according to a third embodiment of the present invention. As shown in FIG. 3, the occupancy status monitoring system according to the present embodiment controls the occupancy status monitoring device 39 of the present invention installed in each of a plurality of monitoring areas and the occupancy status monitoring device 39. Communication device that performs communication between the central control device 35, the occupancy monitoring device 39, and the central control device 35.
N34. The central control unit 35 includes an alarm generating unit 36 that issues an alarm in accordance with an alarm signal issued by the determination circuit 32 of each occupancy status monitoring device 39, and an alarm that is automatically canceled or operated in accordance with an operation on the machine side. And an alarm canceling means 38 for canceling. In addition,
The occupancy status monitoring device 39 may be any occupancy status monitoring device of the present invention. Here, the following description will be made assuming that the occupancy status monitoring device is the occupancy status monitoring device in the above-described second embodiment.

Next, the operation of the present embodiment will be described.

Each occupancy status monitoring device 39 monitors a corresponding monitoring area, and each determination circuit 32 issues an alarm signal.
The operation of causing the alarm generating means 33 of each device to generate an alarm and causing the alarm canceling means 37 of each device to release the alarm is as described in the second embodiment. In the present embodiment, further, the alarm signal generated by each determination circuit 32 is transmitted to the communication cable LAN in the building.
The signal is transmitted to the central control unit 35 via 34. When the alarm signal is transmitted, the central controller 35 displays the position corresponding to the monitored area on a CRT image, a lamp, or the like, to notify the monitoring person. Further, the alarm generating means 36 provided in the central control device 35 issues an alarm in a place (for example, a management center) where the central control device 35 is installed, according to the alarm signal. When each determination circuit 32 automatically cancels the alarm signal, the central control device 35 returns the display to a normal state. The alarm canceling means 38 provided in the central controller 35 cancels the alarm according to the automatic canceling. Note that the alarm canceling means 37 and the alarm canceling means 38 may be capable of canceling both of the alarms issued by the alarm generating means 33 and the alarm generating means 36 in conjunction with each other by a single machine-side operation.

By doing so, it is possible to monitor the occupancy status of persons in a plurality of specific monitoring areas, and to perform collective centralized processing and management, so that the occupancy status monitoring is inexpensive. A system can be provided.

As described above, according to the present embodiment, the position of a monitoring area where a person is present for a certain period of time or more is notified to another person by using the occupancy monitoring device of the present invention. When the occupant leaves the room, the alarm or the like can be returned to the normal state, and the positions of a plurality of monitored areas are transmitted to the central control device using the in-building communication line to notify the observer of the abnormality. Thus, safety in the monitoring area can be ensured, and a highly accurate and reliable occupancy monitoring system can be constructed.

The occupancy monitoring system according to the present embodiment has a plurality of monitoring zones, and the occupancy monitoring device of the present invention is provided for each of the monitoring zones. However, the present invention is not limited to this. However, for example, the first system includes only one occupancy status monitoring device of the present invention that monitors one monitoring area, a central control device of the present invention, and a communication unit of the present invention.
May be provided with the alarm generating means described in the embodiment.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings.

FIG. 4 is a schematic configuration diagram showing an occupancy status monitoring system according to a fourth embodiment of the present invention. The occupancy status monitoring system according to the present embodiment is similar to the occupancy status according to the third embodiment described above except that the central control device and the communication means of the present invention are also used as those of the existing nurse call system. It is the same as the situation monitoring device. Therefore, in the present embodiment, components that are not particularly described are assumed to be the same as those in the third embodiment.
Components having the same names as those of the third embodiment have the same functions as those of the third embodiment unless otherwise specified.

As shown in FIG. 4, the occupancy status monitoring system according to the present embodiment includes a plurality of monitoring zones (here,
Hospital toilet. ), The occupancy monitoring device 45 of the present invention is installed in the central control device 44 via the individual corridor lamp 43 of the nurse call system 46 and the communication means 47 for the nurse call system installed in each monitoring area.
Connected to. The occupancy monitoring device 45
May be any occupancy status monitoring device of the present invention, but here, the occupancy status monitoring device of the above-described second embodiment is the same as the occupancy status monitoring device of the second embodiment except for the alarm generating means and the alarm canceling means of the present invention. The following description will be given assuming that there is.

Next, the operation of the present embodiment will be described.

The operation when each occupancy status monitoring device 45 monitors a corresponding monitoring area, each determination circuit 42 issues an alarm signal, and automatically cancels the alarm signal will be described in the second embodiment. As you did. In the present embodiment, further, the alarm signal generated by each determination circuit 42 is transmitted to the individual corridor lamp 43 of the nurse call system 46 installed on the corridor side of the monitoring area. Individual corridor lights 43
Can send a signal as a contact signal to the emergency call line of a nurse call system, activate an alarm lamp, and notify a supervisor (here, a caregiver such as a nurse). That is, the individual corridor lamp 43, which is an alarm generating means, issues a warning to the restroom where the cared person is present for a predetermined time or more to notify the cared person. In addition, the central control unit 44 of the nurse center blinks an individual alarm lamp or issues an alarm alarm based on the alarm signal output from the determination circuit 42, so that the toilet where the abnormality has occurred can be quickly grasped at the nurse center. To After confirming the safety of the toilet in which the abnormality has occurred, the caregiver can reset the alarm by using the reset button for resetting the alarm installed on the individual corridor lamp 44 or the reset button of the nurse center. The system automatically resumes monitoring after the alarm is cleared.

By doing so, it is possible to detect the staying state of the human body in the toilet and to perform collective centralized processing and management, thereby providing an in-room state monitoring system which is inexpensive. can do.

As described above, according to the present embodiment, using the occupancy status monitoring apparatus of the present invention, the caregiver or the like is informed of the position of the toilet where the care receiver is present for a certain period of time or more. When the cared person leaves the room, the warning and the like can be returned to the normal state, and the positions of the plurality of monitored areas are transmitted to the central control device using the in-building communication line, thereby notifying the monitored person of the abnormality. Thus, safety in the monitoring area can be ensured, and a highly accurate and reliable occupancy monitoring system can be constructed.

The occupancy monitoring system according to the present embodiment includes a central control unit and a communication unit according to the present invention.
Although the present embodiment has been described as being shared with the existing nurse call system, the present invention is not limited to this, and may be shared with another centralized management system.

Further, the occupancy status monitoring device according to the present embodiment has been described as the occupancy status monitoring device according to the second embodiment except that the alarm generating means and the alarm canceling means of the present invention are omitted. However, the present invention is not limited to this, and may be provided with the alarm generating unit and the alarm canceling unit of the present invention, and may generate an alarm separately from the individual corridor lamp in the present embodiment. In short, any device may be used as long as it is the occupancy monitoring device according to the present invention.

[0057]

As is apparent from the above description, according to the present invention, when the occupant stays in the room for a long time, a warning is issued, and the abnormality can be easily notified to others. It is possible to provide an in-room state monitoring device and an in-room state monitoring system with high cost and low cost.

That is, according to the present invention, it is possible to easily monitor the presence of a person in a monitoring area such as a common facility for restrooms, laundry, and breaks in hospitals and nursing homes. When a certain time is reached, the monitoring person is notified by an alarm lamp or the like, so that a person who has stayed in a specific monitoring area for a long time can be easily detected. In addition, by installing the passage sensor on the ceiling or side surface and setting the detection area near the head, it is possible to accurately detect the presence of a room regardless of the inclination or movement of the human body. In addition, the sensor signals can be collectively processed by a determination circuit provided in each monitoring area, and further, the signals are introduced into a network in the building, and the use status of the room, the monitoring area, and the like is monitored using a central control device. Since the centralized management can be performed, an occupancy monitoring system can be obtained at a low cost. Especially,
Since the determination of the human body in the monitoring area is performed by the determination circuit and the signal of only the monitoring area where the room is abnormally long is transmitted to the central control device, real-time monitoring can be performed.

Further, the occupancy status monitoring system of the present invention processes information from a plurality of sensors by one determination circuit per monitoring area, and transmits only necessary information to the central control device via Ethernet. Therefore, monitoring can be performed in real time, and costs can be reduced. As described above, the occupancy status monitoring device and the occupancy status monitoring system of the present invention are very simple in terms of system, and by using them, accurate status monitoring can be easily performed at low cost. it can. Therefore, by using the present invention, it is possible to easily and highly accurately monitor the occupancy status with high reliability and safety, which can greatly contribute to making the hospital intelligent.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an occupancy monitoring device according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view showing an occupancy status monitoring device according to a second embodiment of the present invention.

FIG. 3 is a schematic configuration diagram illustrating an occupancy status monitoring system according to a third embodiment of the present invention.

FIG. 4 is a schematic configuration diagram illustrating an occupancy status monitoring system according to a fourth embodiment of the present invention.

[Explanation of symbols]

 11, 21, 31, 41 Passage sensor 12, 23, 33, 36 Alarm generation means 13 Monitoring area 14, 24 Corridor 15, 26 Entrance 16, 22, 32, 42 Judgment circuit 25 Toilet 27, 37, 38 Alarm release means 34 Communication LAN 35, 44 Central control device 39, 45 Room status monitoring device 41 Passage sensor 42 Judgment circuit 43 Individual corridor light 46 Nurse call system 47 Communication means of nurse call system

──────────────────────────────────────────────────続 き Continuing on the front page (51) Int.Cl. ⁶ Identification code FI G08B 25/04 G08B 25/04 K (72) Inventor Shinji Tanaka 1006 Ojidoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (10)

[Claims] 1. A passage sensor for detecting a moving direction of a human body at each entrance and exit of a monitoring area having one or a plurality of entrances and exits, and based on a signal from the passage sensor, entering / leaving the human body into the monitoring area. A occupancy status monitoring device, comprising: a determination circuit that measures the time that a person continuously stays in the monitored area by determining exit, and issues an alarm signal according to the time. 2. The method according to claim 1, wherein the determination circuit automatically cancels the alarm signal when it is determined that the person is no longer in the monitoring area while the alarm signal is being issued. 2. The occupancy status monitoring device according to 1. 3. An alarm generating means for issuing an alarm in accordance with the alarm signal, and an alarm canceling means for canceling the alarm in accordance with automatic cancellation of the alarm signal or operation on the machine side. 3. The occupancy monitoring device according to 1 or 2. 4. The monitoring circuit according to claim 1, wherein the occupant value is set to 0 when the output signal corresponding to entry into the monitoring area is output from the passage sensor, and +1 is output from the monitoring area. When the output signal corresponding to the leaving of the room is output from the passage sensor, -1 is added, and when the number of occupants is larger than 0, it is determined that a person is present. The occupancy status monitoring device according to claim 1. 5. The room occupant value is set to the initial value when monitoring of the monitored area is started, and is reset to the initial value when the value becomes smaller than 0 after the monitoring of the monitored area is started. The occupancy status monitoring device according to claim 4, wherein: 6. The occupancy status monitoring device according to claim 1, wherein the passage sensor is a pyroelectric infrared sensor. 7. The occupancy status monitoring device according to claim 1, wherein said occupancy status monitoring device is installed in each of one or a plurality of said monitoring areas, and a central control unit for controlling said occupancy status monitoring device in an integrated manner. Device, and communication means for performing communication between each of the occupancy status monitoring devices and the central control device, wherein the central control device outputs the alarm signal generated by the determination circuit of each of the occupancy status monitoring devices. And displaying and / or warning of the occupancy status in the monitoring area according to the following. 8. The occupancy status monitoring system according to claim 7, wherein said central control device and said communication means also serve as those of an existing nurse call system or another centralized management system. 9. When the central control device and the communication means are used also as those of an existing nurse call system, the central control device performs the following according to the alarm signal.
9. The occupancy status monitoring system according to claim 8, wherein an individual corridor light provided for each of the monitoring areas or an individual alarm lamp of a nurse center is blinked or an alarm is issued. 10. The blinking or alarm alarm is released by operating a blinking release button of the individual corridor lamp or an individual alarm lamp blinking release button or an alarm release button of the nurse center. The monitoring is automatically restarted.
Occupancy status monitoring system described in 1.