JP2862320B2 - System to detect resident behavior - Google Patents

Description

The present invention relates to a system for detecting occupant behavior.

[Conventional technology]

2. Description of the Related Art Conventionally, a system that determines the presence or absence of a resident based on whether a door is locked is used.

There is also a system that detects infrared light emitted from a resident and determines presence / absence.

Further, there is also a system using a Doppler radar (intrusion alarm device).

[Problems to be solved by the invention]

In the above-mentioned conventional technique, the key-based method has a problem that the key is forgotten and the confirmation of presence / absence is uncertain. In particular, there was a problem in nursing homes where some people could not use it because they had no personality.

Infrared ray detection shows that a person is present, but it is uncertain if the sensor is soiled with soot or the like, and it is not suitable for nursing homes because it is not known whether the sensor is healthy.

In addition, the system using the Doppler radar has a problem that when it is sleeping or falls down, it cannot be distinguished from absence.

Furthermore, these prior arts have a problem in that since the sensor is out of the room, there is a person who does not want to feel as if it is being monitored.

An object of the present invention is to provide a system for detecting a resident's action that can solve such a problem, particularly a system suitable for a nursing home or the like.

[Means for solving the problem]

In order to achieve the above object, in the first invention, a floor mat (1, 1 ', 1 ", 10) in which a number of individual switches (S11 to S55) for sensing pressure are arranged and a number of individual switches (S11 to S55) are arranged. S11
To S55), and a microprocessor (5) for recognizing the pattern of the individual switch under pressure and its temporal change.

According to a second aspect of the present invention, in the first aspect, an individual switch that has been turned on at the time of turning on the power of the system is removed from the detection after that, out of the many individual switches (S11 to S55).

According to a third aspect, in the first aspect, a memory (6) storing a normal life pattern in advance is provided, and a temporal change of the recognized pattern is compared with a life pattern stored in the memory (7). It has a program for judging abnormal behavior of residents.

According to a fourth aspect of the present invention, in the first aspect, a ROM (6) storing a learning program for learning a normal life pattern for a certain period after the start of use, and a RAM (RAM) storing a life pattern learned during the learning period. 7) was provided.

[Action]

According to a first aspect of the present invention, a microprocessor (5) scans a large number of individual switches arranged on a floor mat, recognizes a pattern of the individual switches under pressure and a temporal change thereof, and explains how a resident operates. Detects actions such as working or sleeping.

In the second invention, bedding such as a closet placed in a room when the power switch of the system is first turned on is removed from detection thereafter.

In the third invention, an abnormality is determined by comparing a temporal change of the recognized pattern with a normal life pattern in the memory.

According to the fourth aspect of the present invention, a normal life pattern is automatically generated during a certain period of learning according to a ROM learning program.
Store in RAM.

〔Example〕

In the embodiment shown in FIG. 1, reference numeral 1 denotes a floor mat, which includes a switch matrix 2, an x-axis multiplexer 3x, and a y-axis multiplexer 3y. 4 is a detection circuit for detecting that individual switches of the switch matrix 2 are under pressure;
Reference numeral 5 denotes a microprocessor, 6 denotes a ROM for storing a learning program, and 7 denotes a RAM for storing a life pattern, which are connected as shown. The multiplexers 3x and 3y act as scanners for scanning the individual switches of the switch matrix 2. The switch matrix 2 is located at each intersection of the matrix.
25 individual switches S11 to S55 are configured. In addition,
The code of each individual switch is shown by adding numbers 1 to 5 of x-coordinate and y-coordinate after the letter S indicating the switch.

FIG. 2 is a diagram showing a configuration of a switch matrix and an equivalent circuit of a scanner and a detection circuit. FIG. 2 shows a case where the number of individual switches is 4 × 4 = 16. 3'x is 4
The x-axis scanning is performed by sequentially turning on these switches by a scanner including the switches x1 to x4.
Reference numeral 3'y denotes a scanner composed of four switches y1 to y4. When these switches are sequentially turned on, scanning on the y-axis is performed. 4 is a detection circuit. Individual switch as shown
When pressure is applied to a part of the surface of the floor mat 1 composed of the switch matrix 2 composed of S11 to S44 and the scanners 3'x and 3'y, the individual switches at the positions receiving the pressure are activated.
It turns ON, and a pulse appears at the output of the detection circuit 4. Note that in an actual floor mat, the scanners 3'x and 3'y are not a mechanical switch arrangement as shown in the figure but are scanners using electronic switches and are integrated into ICs.

FIG. 3 is a schematic vertical sectional view showing the structure of an example of a switch matrix of a floor mat. Conductors 9 and 9 'are arranged on an upper surface and a lower surface with a conductive rubber 8 interposed therebetween. The conductor 9 extends in the left-right direction, and the conductor 9 'extends in the front-rear direction perpendicular to the paper surface. When a pressure indicated by an arrow P is applied to a part of the floor mat from above, the part of the conductive rubber 8 is compressed and thinned,
The conductor 9 and the conductor 9 'at that portion (in this case, 3
Since the electric resistance between the conductor 9 ') and the conductor 9') decreases, this is detected by the detection circuit, and it is recognized that the individual switch has been turned ON. Individual switches are formed at portions corresponding to the respective intersections of the conductors 9 and 9 '.

4 and 5 show different embodiments of the floor mat. The floor mat 10 has 25 individual switches S11 to S55 arranged on a plate 11. 12 is a thin plastic sheet, and 13 is a conductor. For example, if pressure is applied to the individual switch S13 in FIG. 5 from above, the conduction between the two conductors 13 constituting the switch S13 turns on the individual switch S13. Reference numeral 14 denotes an electronic circuit provided in the corner of the floor mat, in which electronic circuits similar to the multiplexers 3x and 3y, the detection circuit 4, the microprocessor 5, the ROM 6, the RAM 7, and the like shown in FIG.

The floor mat 1 (or 10) of the above embodiment is used by laying it on the floor of a house 15 as shown in FIG. If the closet 16 is placed on the floor mat 1, the individual switch below it is turned on. When the person 20 gets on the floor mat, the individual switch of the part on which the person 20 gets on is turned on. Then, the switch matrix of the floor mat 1 is scanned through the multiplexers 3x and 3y, and the pattern is recognized by the microprocessor 5. As for the floor mat, as shown in FIG.
It is preferable to provide small floor mats 1 'for each. 19 is a kitchen without floor mats. Thus room 17 and the entrance
The floor mats 1 and 1 'provided on the floor 18 need to be arranged with a large number of individual switches fine enough to detect a foot pattern 20' (see FIG. 8) when a person runs.
It is preferable that ten or more individual switches be put in the 20 '. The pattern of the human foot is fixed when the system is manufactured. By doing so, this pattern (shape) can be determined to be all human feet. Also, if the pattern of the human foot is fixed and the individual switches are finely arranged so that ten or more individual switches can enter the human foot, for example, even if a cat walks on the floor mat, the pattern will be By canceling ones that are small and have only a few individual switches ON or less, it is also possible to distinguish small feet such as cats from humans.

By looking at such a temporal change in the pattern of the human foot, it is possible to recognize whether the user exits the entrance as indicated by arrow A in FIG. 7 or enters the entrance as indicated by arrow B in FIG. Therefore, it can be used for confirming presence / absence.

In the system of the above embodiment, the learning program is stored in the ROM 6. First, it has an initial setting function that prevents individual switches that are turned on at the time of turning on the power from being detected thereafter. With this function, furniture such as the chest 16 is excluded from detection. This initial setting is performed when no one is present.

For example, in the case of a chair as shown in FIG. 9, the foot (pattern) is remembered at the time of manufacture, and the chair is assumed to be this pattern at any place.

Since the users who use this system vary widely, it is difficult to put everything in at the time of manufacture, and as a means to cope with this, a fixed learning period of about 3 days to 1 week is set and the residents ( The user learns the temporal patterns when the user is awake and when he is sleeping, and stores the patterns in the RAM 7 as normal life patterns. For example, as in the case where a resident is sleeping, a place where a person's body is sleeping in a large shape with no movement and a time zone in which there is no movement (that is, fixed) are remembered.

After the learning period, the microprocessor 5 issues an alarm when the life pattern stored in the RAM 7 is deviated.

Fig. 10 shows an example using this system, 1 is a floor mat placed in a room, 1 'is a floor mat placed in an entrance, 14 and 14' are electronic circuits of floor mats 1 and 1 ', respectively, and 22 is a 100V power supply. ,twenty three
Is a toilet door, 24 is a switch interlocking with the door 23, 25 is a switch on the seat, and the electric signals from the electronic circuits 14, 14 'and the switches 24, 25 are collected by the sensor 26 and displayed on the display 27. You. In addition, the information is transmitted to a remote place via the telephone line 28, for example, to the elderly safety center. The example in FIG. 10 is suitable for newly built houses.

FIG. 11 shows another embodiment in which an electronic circuit 14 "provided on a floor mat 1" has a battery life of 10 such as a gas meter or a water meter.
It is configured to emit electric waves only when it is determined that there is an abnormality in the annual power saving. This one has no wiring,
There is a merit that can be applied to existing houses.

FIG. 12 shows a case where a receiving loop antenna 29 is provided in a house having a floor mat 1 "provided with a circuit 14" which emits a radio wave when an abnormality occurs, as described above, and a telephone line 31 is transmitted from an NCU (network control device) 30.
Is used to communicate to fire departments and welfare organizations.

In the above-described embodiment, the floor mat is retrofitted to an existing house as a carpet, but may be incorporated as a floor material for a new house.

〔The invention's effect〕

Since the system of the present invention is configured as described above, it is possible to determine whether or not the resident has gone out, regardless of forgetting to lock the key, so that the presence / absence can be surely confirmed.

In addition, an alarm can be automatically issued when an abnormal behavior deviates from the life pattern, for example, when sleeping in an unusual place.

Furthermore, since a normal living pattern can be automatically memorized and used as a judgment criterion, it can be applied to a wide variety of residents.

Therefore, it can be used conveniently to confirm the presence / absence of an elderly person, disorder of life rhythm, and safety.

[Brief description of the drawings]

1 is an electric circuit according to an embodiment of the present invention, FIG. 2 is an equivalent circuit of a floor mat, FIG. 3 is a schematic longitudinal sectional view of the floor mat, and FIGS. 4 and 5 are perspective views of floor mats having other structures. FIG. 6 is a front view of a state in which a floor mat is installed in a house, FIG. 7 is a plan view of a room layout of a house, FIG. 8 is a plan view of a foot pattern, FIG. 9 is a perspective view of a chair, FIG. 10 is a schematic view of an example using the system of the present invention, FIG. 11 is a perspective view of another embodiment of the present invention, and FIG. 12 is a floor mat of FIG. 5 is an overall schematic diagram of an example using. 1, 1 ', 1 ", 10 ... floor mat, S11 to S55 ... individual switches, 5 ... microprocessor, 6 ... ROM (memory), 7 ... RAM

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-44298 (JP, A) JP-A-62-164435 (JP, A) JP-A-62-268529 (JP, A) 192199 (JP, A) JP-A-1-88214 (JP, A) JP-A-1-176401 (JP, U) JP-A-61-197063 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A61B 5/00

Claims (4)

(57) [Claims] 1. A large number of individual switches for sensing pressure (S11).
~ S55) and the floor mats (1,1 ', 1 ", 10) and a number of individual switches (S11-S55) are scanned to determine the pattern of individual switches under pressure and their temporal changes. A system for detecting a resident's behavior, comprising: a microprocessor (5) for recognizing the resident. 2. A plurality of individual switches (S11 to S55).
2. The system according to claim 1, wherein the individual switches that are turned on when the power of the system is turned on are removed from detection thereafter. 3. A memory (6) in which a normal life pattern is stored in advance, and a temporal change of the recognized pattern is compared with a life pattern stored in the memory (7) to detect abnormal behavior of the resident. The system for detecting a resident's behavior according to claim 1, further comprising a program for judging the occupancy. 4. A ROM (6) for storing a learning program for learning a normal life pattern for a certain period after the start of use,
RAM (7) that stores the life patterns learned during the study period
The system according to claim 1, further comprising: