JP7152795B2 - Monitoring system for people requiring nursing care - Google Patents

Description

The present invention relates to a care-requiring person watching system.

2. Description of the Related Art Conventionally, there is known a care-requiring monitoring system that monitors a care-requiring person such as an elderly person or a sick person using a sensor (see, for example, Patent Literature 1).

WO2016/175109

However, the system for watching over persons requiring nursing care described in Patent Document 1 has a fixed sensor installed in each of the bedroom, living room, toilet, dressing room, etc. in a building with a relatively large number of residents (persons requiring nursing care). It was installed to monitor the person requiring nursing care.
By the way, one sensor is insufficient to monitor a care-requiring person in a relatively small room with one room per person.
In particular, when the care-requiring person is likely to wander or behave abnormally, it has been difficult to sufficiently detect abnormalities with only one sensor.

Therefore, conventionally, a monitoring system is used in which a plurality of sensors are installed in one room and every corner of the room is monitored.
However, installing such a plurality of sensors in one room has the problem that the installation work on the ceiling or the like is troublesome, and the cost including the control device is high.

Therefore, the present invention provides an economical system for watching over a person requiring care that can detect with a high probability only a single sensor even when there is a risk that the person requiring care will behave abnormally, and that can be installed at a low cost. intended to provide Another object of the present invention is to provide a care-requiring person watching system with few false alarms.

A system for watching over a person requiring care according to the present invention comprises a sensor device having an infrared array sensor unit that captures the presence of a person, and a drive mechanism that changes the sensor detection direction of the sensor unit up, down, left, and right, and the drive mechanism. By changing the sensor detection direction of the sensor unit at regular time intervals, the person requiring care is detected at a plurality of predetermined positions, and the existence capture time is the longest among the presence capture times of the person requiring care at the plurality of predetermined positions. The sensor detection direction of the sensor unit is fixed at a specific predetermined position with a long distance to perform monitoring.

Further, the sensor detection directions corresponding to the plurality of predetermined positions are stored as position setting values, and after starting watching over, any of the above setting values are called, and the sensor detection directions of the sensor unit are called by the driving device. It is possible to direct it in the direction of the above-mentioned position set value.
In addition, for each abnormal posture or behavior to be detected, the abnormal posture or behavior is classified in advance into a plurality of stages from the beginning stage to the final stage, and an abnormality notification stage for judging and reporting an abnormality is specified. It is configured so that it can be set for each person requiring care.

Further, a temperature measuring element capable of measuring room temperature is provided, and the room temperature value obtained from the temperature measuring element and the human body temperature value obtained by the sensor unit are used to calculate the above A corrected body temperature value is calculated by correcting the body temperature value so as to reduce the error, and if the corrected body temperature value is determined to be abnormal, a notification is sent.
Further, the above correction includes a temperature data leveling process for calculating an average value based on the temperatures obtained by measuring body temperature a plurality of times.
In addition, regarding abnormal postures or abnormal behaviors to be detected, an unnecessary range of notification can be set for each specific person requiring care.

INDUSTRIAL APPLICABILITY The present invention is capable of detecting and reporting abnormal postures or abnormal behaviors with a high degree of probability by a single sensor in a system for monitoring caregivers who live in one room per person. The number of installed sensor devices can be greatly reduced, and the installation cost can be reduced.

1 is an overall configuration diagram showing an embodiment of the present invention; FIG. 1 is an overall block diagram showing an embodiment of the present invention; FIG. 1 is a simplified perspective view of a sensor device; FIG. FIG. 3A is a simplified cross-sectional plan view of the sensor device, wherein (A) is a simplified cross-sectional plan view showing a state in which the sensor section faces right, and (B) is a simplified cross-sectional plan view showing a state in which the sensor section faces left; FIG. 2 is a schematic cross-sectional side view of a main part of the sensor device; It is a flowchart figure for demonstrating a watching process. It is a flowchart figure explaining a watching position determination process. FIG. 4 is a simplified image data diagram showing an example of low-pixel image data; FIG. 4 is a simplified image data diagram showing an example of high-pixel image data; It is an explanatory view for explaining an example of human detection processing. FIG. 10 is an explanatory diagram for explaining an example of posture detection processing; Figures specifically showing the skeletal model, (A) is a view of the skeletal model shaking her head left and right and slapping her head with both hands, and (B) is a view of the skeletal model that has fallen off the bed. , (C) is a skeletonized model sitting on a bed and trying to get out of bed. It is a flowchart figure for demonstrating a body temperature data acquisition process.

The present invention will be described in detail below based on the illustrated embodiments.
1 and 2 show an embodiment of the present invention. The system for watching over people requiring care according to the present invention detects an abnormality in a person requiring care such as an elderly person or a sick person in the vicinity, and monitors the person by notifying caregivers such as caregivers, nurses, and guardians. is. As shown in FIGS. 1 and 2, this monitoring system includes a monitoring sensor device 1, a server device 2 connected to the sensor device 1 by wire or wirelessly so as to be able to transmit and receive data (information), and a server device 2. and a portable caregiver information terminal 3 wirelessly connected so as to be able to transmit and receive data (information).

The sensor device 1 is arranged in a living room (room) R for a person requiring care, which is one room per person and is provided in a nursing care facility, a hospital, a house for the elderly, or the like. Moreover, only one (one unit) sensor device 1 is installed in one room R in which one care-requiring person resides.
Although not shown, the server device 2 is installed in a management room such as a staff room, a manager's room, or a nurse center.

As shown in FIG. 2, the sensor device 1 includes an infrared array sensor unit 10 capable of acquiring temperature distribution data, a sensor-side arithmetic processing unit 11 such as a microcomputer or CPU for performing predetermined processing, and a data storage unit. A sensor-side storage unit 12 such as a RAM or flash memory, a sensor-side transmission unit 18 capable of transmitting data stored in the sensor-side storage unit 12 to the server device 2, the server device 2, the caregiver information terminal 3, etc. and a sensor-side receiver 19 capable of receiving command signals and data from an external device. In FIG. 2, the sensor-side transmitter 18 and the sensor-side receiver 19 are shown integrally as a sensor-side transmitter/receiver.

The server device 2 includes a server-side receiver 29 capable of receiving data from the sensor device 1 and command signals and data from the caregiver information terminal 3, and a server-side receiver such as a microcomputer and a CPU for performing predetermined processing. Arithmetic processing unit 21, server-side storage unit 22 such as RAM or flash memory for storing data, server-side transmission unit 28 capable of transmitting data stored in server-side storage unit 22 to caregiver information terminal 3, It has In FIG. 2, the server-side transmitting section 28 and the server-side receiving section 29 are shown integrally as a server-side transmitting/receiving section.

The caregiver information terminal 3 includes a terminal-side receiver 39 capable of receiving data and signals from the server device 2 directly or via an information communication network J or the like, and a server for receiving command signals and data. It is a portable type (portable device) provided with a terminal-side transmission unit 38 capable of transmitting to external devices such as the device 2 and the sensor device 1 .

The caregiver information terminal 3 includes a terminal-side arithmetic processing unit 31 such as a microcomputer or CPU for performing predetermined processing, a terminal-side storage unit 32 such as a RAM or flash memory for storing data, and a terminal-side storage unit 32 A terminal-side display unit 33 such as a liquid crystal display or an organic EL display capable of displaying data (reports) from the server device 2, and a terminal-side input unit 34 such as a touch panel or buttons for inputting command signals and information. and smart phones, tablet PCs, portable game consoles, PDAs, and the like. In FIG. 2, the terminal-side transmitting section 38 and the terminal-side receiving section 39 are shown integrally as a terminal-side transmitting/receiving section.

A specific example and operation of the sensor device 1 will be described with reference to FIGS. 3 to 5. FIG. This sensor device 1 comprises an infrared array sensor section 10 for capturing the presence of a person, and a driving mechanism 15 for changing the detection direction Q of the sensor section 10 vertically and horizontally.

In the specific example shown in FIGS. 3 to 5, a substantially cylindrical shell 41 is provided in a box-shaped casing 40 so as to be swingable around a vertical axis L ₁ , and a motor M ₁ moves left and right as indicated by an arrow Y ₁ . You can swing your head freely. Further, the sensor section 10 is provided inside the substantially cylindrical shell 41 so as to be rotatable _about the horizontal axis L2 and vertically _swingable by the motor _M2 as indicated by the arrow X1. Moreover, the sensor section 10 is arranged in the cutout window section 42 at the lower front position of the substantially cylindrical shell 41 .

The drive mechanism 15 has _a motor M1 and _a motor _M2 for swinging left and right and up and down as indicated by the arrows Y1 and X1, and _a gear engagement transmission mechanism (not shown).
As the motors _M1 and _M2 that swing left and right and up and down like the arrows _Y1 and _X1 , motors with encoders or the like can be used to detect the left and right and up and down swing directions as "numerical values". The "numerical values" of the horizontal and vertical swing directions detected by the encoder can be stored in the sensor-side storage unit 12 as position setting values.

As shown in FIG. 1, in one room R, a single sensor device 1 is attached to a high place such as a ceiling or a wall. Then, for example, four locations around the bed, position A around the desk, position B around the desk, position C at the entrance, and position F around the toilet are (provisionally) selected as places (positions) particularly necessary for watching over.
The driving mechanism 15 is operated so that the sensor unit 10 is directed toward each of the plurality of selected predetermined positions P, and the horizontal and vertical swing directions corresponding to the plurality of selected predetermined positions P are controlled. The “numerical value” is stored in the sensor side storage unit 12 .
In other words, the sensor detection directions Q corresponding to the four predetermined positions P(A), P(B), P(C), and P(F) in FIG. Memorize.

Then, the driving mechanism 15 changes the detection direction Q of the sensor unit 10 at regular intervals to detect a person requiring nursing care at a plurality of predetermined positions P--four positions in FIG. , the predetermined position with the longest presence supplement time among the presence supplement time of the care recipient at a plurality of predetermined positions P---this is referred to as a specific predetermined position _P0 . ---, the detection direction Q of the sensor unit 10 is fixed, and watching is started under such a fixed state of the sensor unit 10.

In this way, the person requiring care spends the longest time at the specific predetermined position P ₀ , so the occurrence of an abnormality can be detected with a high probability.
After starting watching over, if the care recipient does not exist (cannot be detected) at the above-mentioned specific predetermined position P ₀ for a predetermined long time, the caregiver responds to another predetermined position P using the information terminal 3. The set position value is called, and the driving mechanism 15 directs the detection direction of the sensor section 10 to the other predetermined position P described above.
As a result, it is possible to discover that the care-requiring person is acting abnormally or in an abnormal posture (for example, lying on the floor or suffering from pain) at another predetermined position P.

For each abnormal posture or behavior to be detected, the abnormal posture or behavior is classified in advance into a plurality of stages from the beginning stage to the final stage, and the abnormality notification stage for judging and reporting as an abnormality is specified as a specific nursing care requirement. set for each person. In addition, regarding abnormal postures or abnormal behaviors to be detected, an unnecessary range of notification can be set for each specific person requiring care. That is, it is possible to set not to report a specific habit of a specific person requiring care (for example, tapping his/her cheek).

For example, as shown in Table 1, the report level is set to 5 levels. "Falling" in Table 1 will be explained. It is classified into 5 reporting levels up to the state of exiting (sitting on the edge) (level 5). For those requiring nursing care who are particularly likely to fall, the setting is made so that an early notification will be made when they are in a semi-sitting position (level 1). That is, the abnormality notification stage is set to level 1. Also, for those who are less likely to fall, it is set to report when they are sitting on the edge (level 5). In addition, the abnormality notification stage is set to notification levels 2 to 4 in correspondence with the possibility of falling. In this way, even if it takes several minutes for the caregiver to rush to the position of the bed, it can be completed in time.

To explain the "toilet" in Table 1, depending on the number of times you use the toilet, whether you have constipation or whether you use the toilet too many times can be determined appropriately for each person requiring care by setting the abnormality notification stage. can be done.

Next, the flow of the watching process will be described. In FIG. 6, first, a watching position determination process S0 is performed. Specifically, as shown in FIG. 7, first, a predetermined position setting process S01 is performed. A plurality of predetermined positions P(A), P(B), P(C), and P(F) (see FIG. 1) are detected by changing the detection direction Q of the sensor unit 10 at regular intervals. . In other words, the detection direction changing process S02 and the presence time measuring process S03 are sequentially performed. For example, the detection direction changing process S02 and the presence time measurement process S03 are performed for the predetermined position P(A), and then the detection direction change process S02 and the presence time measurement process S03 are performed for the predetermined position P(B). Further, the detection direction changing process S02 and the presence time measuring process S03 are similarly performed for the predetermined position P(C) and the predetermined position P(F).

A watching position determination process _S04 is performed to determine a predetermined position P having the longest person presence detection time among a plurality of predetermined positions P as a specific predetermined position P0.
Thereafter, the sensor detection direction of the sensor unit 10 is fixed at the specific predetermined position _P0 , and watching is started.

Next, returning to FIG. 6, silhouette image creation processing S1 for creating a silhouette image in the sensor device 1 is performed. In the silhouette image creation processing S1, first, temperature distribution measurement processing for obtaining temperature distribution data by the low-resolution infrared array sensor unit 10 is performed. Low pixel image data 51 (see FIG. 8) based on the temperature distribution data is output from the infrared array sensor section 10. FIG. The silhouette image creation processing S1 then performs resolution enhancement processing for converting the low-pixel image data 51 into high-pixel image data 52 (see FIG. 9). For example, low pixel image data (low resolution image data) 51 of 80×60 pixels is converted into high pixel image data (high resolution image data) 52 of 320×240 pixels (QVGA). In the present invention, low pixels (low resolution) means less than 160×120 pixels (QQVGA). High pixels (high resolution) refer to 160×120 pixels or more.

Then, the high-pixel image data 52 is used to detect a person requiring care (person), and a person detection process for specifying a person area E (see FIG. 10) where the person requiring care exists is performed. In the human detection process, when a human silhouette is detected, it is determined that a human exists, and the range of a rectangular frame near the human silhouette is specified as a human area E.

Then, in the next area identification confirmation step, if the person area E can be identified, the process proceeds to the next skeleton estimation process S2. When the person area E cannot be specified, the person detection process is repeated one after another until the person area E is specified for the images subjected to the high-resolution processing.

Then, in the skeleton estimation process S2, as shown in FIG. 11, first, the joint points 6 of the care recipient (person) are estimated in the specified person area E, and the estimated joint points 6 are plotted on a straight line. to create a skeletalized model 5. Posture estimation processing S3 for detecting a posture (form) is performed based on the skeletal model 5 . Then, action analysis processing S4 is performed to analyze the action from the change in posture.

Posture/action result data is created by the posture estimation processing S3 and the behavior analysis processing S4. Posture/behavior result data includes, for example, ``posture and behavior of starting to walk from bed'', ``behavior of tripping and falling'', ``posture and behavior of crawling on all fours'', ``posture and behavior of lying down'', and ``posture and behavior of lying on the chest''. There are various types of postures and actions, such as leaning on one's hand, posture of falling and pushing one's hand, prone posture, posture of sitting on the floor, and standing and walking posture and action. Fig. 12(A) shows the action of hitting the head with both hands while shaking the head left and right in a standing posture, Fig. 12(B) shows the posture at the moment of falling from the bed, and Fig. 12(C) shows the behavior of sitting on the bed. show good posture and behavior.

A person identification process S6 is performed. That is, from the standpoint of privacy protection, it is most desirable to create a gait feature database for each of a plurality of care recipients and perform gait authentication processing using gait features looked up from the database. Here, the ``gait characteristics'' refer to temporal changes of each part based on the skeletal model illustrated in FIG. It refers to the characteristics of the movement (habit) by finding the habit of walking.

Then, the posture/action result data is associated with the person identification information. The person identification information is sufficient if it is possible to identify (determine) which care recipient the posture/behavior result data belongs to. It is information obtained by combining one or more of room identification information such as a number and personal identification information such as a caregiver list number and a medical chart number assigned in advance to each person requiring care. The identification information can be any number, letter, symbol, or the like.

After the skeleton estimation process S2, the body temperature data acquisition process S5 is performed separately from the posture estimation process S3. Specifically, for example, as shown in FIG. 13, the body temperature data acquisition process S5 first performs a measurement site detection process S9. In the measurement site detection process S9, for example, the face (forehead) is detected as the measurement site. Next, a body temperature data extraction process S10 for measuring the body temperature of the measurement site detected in the measurement site detection process S9 is performed. Further, a room temperature measurement process S11 for measuring the room temperature value with the temperature measurement element of the sensor device 1 is performed. After that, using the room temperature value obtained in the room temperature measurement process S11 and the human body temperature value obtained by the sensor unit 10, the body temperature value is corrected so that the error is reduced by a preset table or calculation formula. A temperature correction process S12 is performed to obtain a corrected temperature value.

As in the above example, using the room temperature value obtained from the temperature measuring element and the human body temperature value obtained by the sensor unit 10, the body temperature value is calculated using a preset table or calculation formula with no error. The correction for calculating the corrected body temperature value so as to decrease includes a temperature data leveling process S13 for calculating the average value based on the temperature obtained by measuring the body temperature a plurality of times.

A simple temperature correction process S100 consisting of a body temperature data extraction process S10, a room temperature measurement process S11, and a temperature correction process S12 is performed multiple times. Next, a temperature data leveling process S13 is performed to average the temperature values corrected a plurality of times (in the temperature simple correction process S100) to obtain a corrected body temperature value (after leveling). Personal identification information is associated with the corrected body temperature value (body temperature result data).

Returning to FIG. 6, after the person specifying process S6, an abnormality determination process S7 (posture/behavior abnormality determination process S71, body temperature abnormality determination process S72) is performed. In the abnormality determination process S7 (posture/behavior determination process S71), the abnormal posture/behavior associated with the person identification information is selected from the determination criteria database D for determining whether or not there is an abnormality (abnormal posture/behavior state). Abnormal action reference data (abnormal report stage data) da is read. That is, the abnormal posture/abnormal behavior reference data da associated in advance with the person identification information that matches the person identification information associated with the posture/action result data is read.

Then, the posture/behavior determination processing S71 compares the posture/behavior result data with the abnormal posture/behavior reference data da to determine whether or not there is an abnormal posture/behavior state. That is, when the posture/action result data and the abnormal posture/abnormal action reference data da match or approximate to each other, it is judged to be abnormal.

Then, when it is determined that the patient is in an abnormal posture/abnormal behavior state, a notification process S8 is performed to transmit an abnormal signal T (see FIGS. 1 and 2) to the caregiver side. This abnormal signal T is, in other words, an abnormal posture/abnormal action signal Ta. That is, the caregiver knows that the person requiring care is in an abnormal posture or acting abnormally.

In the abnormality determination process S7 (body temperature abnormality determination process S72), the abnormal body temperature reference data db associated with the person identification information is read from the determination standard database D for determining whether or not the body temperature is abnormal. In other words, the abnormal body temperature reference data db associated in advance with the person identification information that matches the person identification information associated with the body temperature result data is read. Moreover, the abnormal body temperature reference data db differs for each person identification information (person requiring care).

Then, when it is determined that the body temperature is abnormal, a reporting process S8 of transmitting an abnormal signal T to the caregiver side is performed. This abnormal signal T is, in other words, an abnormal body temperature signal Tb.

As described above, when it is determined that the posture or behavior of a particular person requiring care is abnormal, or when it is determined that the particular person requiring care is in an abnormal body temperature state, the reporting process S8 is performed.

Next, processing (operation) of each device 1, 2, 3 will be described.
The sensor device 1 performs a watching position determination process S0, a silhouette image creation process S1, a skeleton estimation process S2, a posture estimation process S3, a behavior analysis process S4, a body temperature data acquisition process S5, and a person identification process S6. Attitude/action result transmission processing for transmitting action result data from the sensor-side transmission unit 18 to the server device 2 is performed. The sensor-side storage unit 12 stores person identification information such as sensor identification information.

The server device 2 receives the posture/action result data at the server-side reception unit 29 . The server-side arithmetic processing unit 21 retrieves the abnormal posture/abnormal action reference data (abnormality report stage data) da from the judgment reference database D stored in advance in the server-side storage unit 22, and compares it with the posture/action result data. Determination processing S7 (posture/behavior abnormality determination processing S71) is performed, and when an abnormal posture/abnormal behavior state is determined, an abnormal signal T (abnormal posture/abnormal behavior signal Ta) is sent from the server-side transmission unit 28 to the caregiver. Report processing S8 for transmitting to the information terminal 3 is performed.

The caregiver information terminal 3 receives the abnormal posture/abnormal behavior signal Ta at the terminal-side receiving unit 39, and the terminal-side arithmetic processing unit 31 displays the abnormal posture/abnormal behavior signal Ta on the terminal-side display unit 33. Display attitude/behavior warning information. The above-mentioned "posture/behavior alarm information" includes the case of sound, and the above-mentioned "display" includes the case of sounding an alarm.

Further, the sensor device 1 performs body temperature result transmission processing for transmitting the body temperature result data from the sensor-side transmission unit 18 to the server device 2 .
The server device 2 receives the body temperature result data at the server-side reception unit 29 . The server-side arithmetic processing unit 21 performs an abnormality determination process S7 (body temperature abnormality determination process S72) in which the abnormal body temperature reference data db is called from the determination standard database D stored in advance in the server-side storage unit 22 and compared with the body temperature result data. If it is determined to be in an abnormal body temperature state, a reporting process S8 of transmitting an abnormal signal T (abnormal body temperature signal Tb) from the server-side transmitting unit 28 to the caregiver information terminal 3 is performed.

The caregiver information terminal 3 receives the abnormal body temperature signal Tb at the terminal side receiving section 39, and the terminal side arithmetic processing section 31 causes the terminal side display section 33 to display body temperature warning information based on the abnormal body temperature signal Tb. . The above-mentioned "body temperature alarm information" includes the case of sound, and the above-mentioned "display" includes the case of sounding an alarm.

It should be noted that the person requiring care is not limited to the elderly or sick, and may be any person who has difficulty living alone in daily life. The caregiver may be a care worker such as a caregiver, a medical worker such as a nurse or a doctor, a security guard, a family member, or any other person capable of assisting the daily life of the person requiring care. The living room R is not limited to nursing care facilities, hospitals, housing for the elderly, etc., but may be a general housing complex. Good luck.

It is also desirable that the sensor-side arithmetic processing unit 11, the server-side arithmetic processing unit 21, etc. have an AI function.

The present invention can be modified in design, and for example, resolution enhancement processing may be omitted. The body temperature data acquisition process S5 may be performed after the person identification process S6. In addition, it is free to select which device performs each process. For example, the sensor device 1 performs a watching position determination process S0, a silhouette image creation process S1, and a body temperature data acquisition process S5, and the server device 2 performs a skeleton estimation process S2, a posture estimation process S3, a behavior analysis process S4, and a person identification process. The processing S6, the abnormality determination processing S7, and the notification processing S8 may be performed. In addition, the sensor device 1 performs a monitoring position determination process S0, a silhouette image creation process S1, a skeleton estimation process S2, a posture estimation process S3, a behavior analysis process S4, a body temperature data acquisition process S5, a person identification process S6, an abnormality determination process S7, and a notification. Processing S8 may be performed (the server device 2 may be omitted).

The sensor device 1 and the server device 2 may be connected in any manner, such as a wired connection via a LAN line, a wireless connection via a wireless router, or a wired connection via an information communication network J such as the Internet or a higher management network. A connection or a wireless connection may be used. In the abnormal signal T, the abnormal posture/abnormal behavior signal Ta and the abnormal body temperature signal Tb may be data having the same content (data simply indicating an abnormality).

As described above, the present invention includes the sensor device 1 having the infrared array sensor unit 10 for capturing the presence of a person and the driving mechanism 15 for changing the sensor detection direction of the sensor unit 10 vertically and horizontally, The sensor detection direction of the sensor unit 10 is changed at regular intervals by the drive mechanism 15 to detect the person requiring care at a plurality of predetermined positions P, and the existence capture time of the person requiring care at the plurality of predetermined positions P. Since the sensor detection direction of the sensor unit 10 is fixed at the specific predetermined position P ₀ where the existence detection time is the longest among the above, the abnormality of the care recipient can be detected reliably (highly probability), the installation work of the sensor device 1 is remarkably easy, and the installation cost is low, which is economical. In this way, one sensor device 1 can efficiently perform monitoring.

Further, the sensor detection directions Q corresponding to the plurality of predetermined positions P are stored as position set values, and after starting watching over, any of the set values are called, and the sensor detection directions of the sensor unit 10 are controlled by the drive device. Since Q can be oriented in the direction of the called position setpoint, any desired predetermined position P can be watched.

In addition, for each abnormal posture or behavior to be detected, the abnormal posture or behavior is classified in advance into a plurality of stages from the beginning stage to the final stage, and an abnormality notification stage for judging and reporting an abnormality is specified. can be set for each care-requiring person, it is possible to prevent malfunction. Then, appropriate notification can be made.

Further, a temperature measuring element capable of measuring room temperature is provided, and the room temperature value obtained from the temperature measuring element and the human body temperature value obtained by the sensor unit 10 are used to determine the A corrected body temperature value is calculated by correcting the body temperature value so as to reduce the error, and a notification is sent when the corrected body temperature value is determined to be abnormal, so that a more accurate notification can be made.

In addition, since the above correction includes temperature data leveling processing S13 for calculating an average value based on temperatures obtained by measuring body temperature a plurality of times, errors can be reduced.

In addition, regarding abnormal postures or abnormal behaviors to be detected, the unnecessary range of notification can be set for each specific person requiring care.

1 sensor device
10 (Infrared array) sensor unit
15 Drive Mechanism P Predetermined Position P ₀ Specific Predetermined Position Q (Sensor) Detection Direction S13 Temperature Data Leveling Processing

Claims (6)

A sensor device (1) having an infrared array sensor section (10) for capturing the presence of a person and a drive mechanism (15) for changing the sensor detection direction of the sensor section (10) vertically and horizontally, A mechanism (15) changes the sensor detection direction of the sensor unit (10) at regular intervals to detect a person requiring care at a plurality of predetermined positions (P). A system for watching over a person requiring care, characterized in that the sensor detection direction of the sensor unit (10) is fixed at a specific predetermined position (P ₀ ) at which the existence capture time of the person requiring care is the longest, and the person is watched over. . storing sensor detection directions (Q) corresponding to the plurality of predetermined positions (P) as position setting values;
After the watching is started, any of the set values are called, and the driving device makes it possible to orient the sensor detection direction (Q) of the sensor section (10) in the direction of the called position set value. The system for watching over people requiring nursing care described. For each abnormal posture or behavior to be detected, the abnormal posture or behavior is classified in advance into a plurality of stages from the beginning stage to the final stage, and the abnormality notification stage for judging and reporting an abnormality is determined according to specific requirements. 3. The system for watching over a person requiring care according to claim 1 or 2, which is configured to be settable for each caregiver. A temperature measuring element capable of measuring room temperature is provided, and using the room temperature value obtained from the temperature measuring element and the human body temperature value obtained by the sensor section (10), according to a preset table or calculation formula, 4. A system for watching over a person requiring care according to claim 1, 2 or 3, wherein a corrected body temperature value is calculated by correcting the body temperature value so as to reduce an error, and when the corrected body temperature value is determined to be abnormal, a notification is sent. 5. The care-requiring person watching system according to claim 4, wherein said correction includes a temperature data leveling process (S13) for calculating an average value based on temperatures obtained by measuring body temperature a plurality of times. 6. A system for watching over a person requiring care according to claim 1, 2, 3, 4, or 5, wherein an unnecessary range of notification can be set for each specific person requiring care for an abnormal posture or behavior to be detected.

Images