JPH0847486A - Demented aged person-watching apparatus - Google Patents

Abstract

PURPOSE:To provide a demented aged person-watching apparatus which has higher waterproofing performance with a smaller size and easier management. CONSTITUTION:A demented aged person-watching apparatus is made up of a tag 2 without battery which is mounted on a human body to change own impedance upon the receiving of an electromagnetic wave and a main unit 4 to transmit the electromagnetic wave to the tag 2 while detecting changes in the impedance of the tag 2. Changes in the impedance of the tag 2 are given by codes different for each tag 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for monitoring an elderly person with dementia (hereinafter referred to as a patient).

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 63-273995 discloses a conventional technique.
There is a wireless transmitter including a gate signal output device, a gate signal detection circuit, a trigger circuit, a switching circuit, a battery, a necklace or a belt that also serves as a transmission antenna, and a portable device. A "blinding elderly wandering search device" including a direction finder and a radio wave receiver is disclosed.

[0003]

Since the wireless transmitter in the above-mentioned "blinding elderly wandering search device" of the prior art is equipped with a battery, it is necessary to manage the battery and keep it in the patient's possession. However, there is a problem that it takes time to manage the battery. Further, since the battery is housed in the wireless transmitter, there is a drawback that the device becomes large in size by the space. Furthermore, when using dry batteries,
An opening / closing lid for replacing the battery is configured, the power receiving electrode is attached to the outside of the case, and in the case of a rechargeable battery, the charging electrode is attached to the outside of the case. There is a drawback that it is not good. SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art, and to provide a dementia geriatric monitoring device which is small in size, easy to manage, and good in waterproofness.

[0004]

That is, according to the present invention, a tag 2 which is attached to a human body and changes its impedance when an electromagnetic wave is received and does not require a battery, and an electromagnetic wave is transmitted to the tag 2 and an impedance change of the tag 2 occurs. It is a dementia geriatric monitoring device comprising a body 4 for detecting Further, the impedance change of the tag 2 is a code different for each tag 2.

[0005]

When the patient 1 wearing the tag 2 according to the present invention monitors an event existing at a predetermined position in the facility, the tag 2 receives a predetermined electromagnetic wave and the antenna 3 is provided at the predetermined position in the facility. The electromagnetic wave is transmitted to the tag 2, and the main body 4 supplies the electromagnetic wave to the antenna 3. When the tag 2 receives the electromagnetic wave, a regular impedance change reaction occurs, and the antenna 3 receives this reaction, and the main body 4 detects the reaction of the tag 2 obtained from the antenna 3. When the main body 4 detects the presence of the tag 2, the main body 4 generates a notification signal to notify the observer.
Further, the impedance change of the tags 2 is set to a different sign for each tag 2 so that the plurality of tags 2 can be distinguished from each other.

[0006]

The embodiment of the present invention is such that a tag 2 attached to a patient 1 for receiving a predetermined electromagnetic wave, an antenna 3 provided at a predetermined position of a facility for transmitting an electromagnetic wave to the tag 2, and an electromagnetic wave to the antenna 3. And a main body 4 for supplying power. The tag 2 has a resonance circuit 5 which receives a predetermined electromagnetic wave, and a switch circuit 6 which operates by using the electromagnetic wave received by the circuit 5 as a power source to regularly short-circuit the resonance circuit 5 to cause an impedance change. Then, the entire tag 2 is molded. Since the tag 2 uses the received electromagnetic wave as a power source, no battery is required. The change in impedance of the tag 2 is coded into a different code for each tag 2 so that the plurality of tags 2 can be individually identified.

The antenna 3 transmits electromagnetic waves to the tag 2 and receives impedance changes of the tag 2. The main body 4 includes a power feeding unit 8 that feeds electromagnetic waves to the antenna 3, a receiving unit 9 that receives a signal received by the antenna 3 from the tag 2, and an event when the signal is obtained from the tag 2 by light, sound, voice, or the like. And a notification unit 10 for notification.
The main body 4 is connected to an entrance / exit management storage unit 11 that records an event in which the presence of the patient 1 is sensed, and an external notification device 12 that extracts the output of the reception unit 9 from the main body 4 and notifies the outside.

In use, first, the tag 2 is attached to the clothes of the patient 1, and the electromagnetic wave emitted from the antenna 3 provided at the entrance of the facility is received by the tag 2 of the patient 1. When the built-in resonance circuit 5 of the tag 2 receives an electromagnetic wave, the tag 2 operates the switch circuit 6 by using the received electromagnetic wave as energy to regularly short-circuit the resonance circuit 5. Due to this short-circuiting operation, the impedance of the resonance circuit 5 changes regularly, causing a change in absorption of electromagnetic wave energy transmitted from the antenna 3.

The antenna 3 catches the change in energy absorption of the tag 2. When the main body 4 obtains the signal of catching the tag 2 from the antenna 3, the notification unit 10 provided in the main body 4 causes the lamp 13 to blink and causes the buzzer 7 to generate an alarm sound, and a predetermined area near the antenna 3 Notify the observer that there is a patient inside. The same number of the lamps 13 as the tags 2 are provided, and it can be known from the blinking position of the lamp 13 who has caught.

Since the periodic rule that the switch circuit 6 short-circuits the resonance circuit 5 is different for each of the plurality of tags 2,
Since the signal related to the cycle of impedance change is different for each tag 2, the receiving unit 9 identifies the plurality of tags 2 and detects the presence of the tag 2. Therefore, the tag 2 is attached to each of a plurality of patients and is individually monitored. The entrance / exit management storage unit 11 stores the event that the antenna 3 catches the tag 2 and records the situation of the patient who enters and exits the entrance / exit of the facility.

[0011]

The present invention according to claim 1 has a tag 2 that changes its own impedance when an electromagnetic wave is received. Therefore, the operation related to this impedance change is based on the energy of the received electromagnetic wave. The battery is not required as an energy source. Therefore, it is not necessary to manage the battery, which is required in the conventional device, the tag 2 can be used semipermanently, and the tag 2 can be held by the patient, which is troublesome for battery management. There is an advantage that it does not. further,
Since there is no malfunction or non-operation of the device due to the exhaustion of the battery, it is convenient because it is possible to reliably check the patient's going out and entering the dangerous area.

Further, since the battery storage part in the conventional device is not required, the tag 2 can be downsized and the entire tag 2 can be molded, and the power receiving electrode, the charging electrode and the like in the conventional device can be molded. Is not provided outside the tag, and these electrodes are unnecessary. Therefore, it is highly waterproof and can be sewn onto clothes, which is convenient.

The tag 2 according to the present invention as defined in claim 2
Since the impedance change of 1 is a different code for each tag 2, the receiving unit 9 identifies the plurality of tags 2 and detects the presence of the tags 2. Therefore, if the tags 2 are attached to each of a plurality of patients, it is possible to monitor each of them individually, and prepare a number of the tags 2 that can be manufactured at a relatively low cost by the number of patients. It can be monitored, individual identification of patients is easy, costs are low,
It is convenient.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

[Explanation of symbols]

 2 tag 4 body

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location G06K 7/08 A 7623-5B G08B 13/24 9419-2E H04B 1/59 7/26

Claims (2)

[Claims] 1. A dementia comprising a tag 2 which is attached to a human body and changes its impedance when receiving an electromagnetic wave and does not require a battery, and a main body 4 which transmits an electromagnetic wave to the tag 2 and detects an impedance change of the tag 2. Sexual elderly monitoring device. 2. The impedance change of the tag 2 is
The dementia geriatric monitoring apparatus according to claim 1, wherein the code is different for each.