JPS58204376A - Fault checking device of crime preventing sensor - Google Patents

Abstract

PURPOSE:To check easily and automatically a fault of a crime prevention sensor, by utilizing a man's movement at the time of non-lookout of a crime preventing system. CONSTITUTION:When a crime prevention release switch SW2 is on (in the course of non-lookout), if an entrance door opening detecting switch DSW is turned on, passing of a man is detected, and as a result, if a crime preventing sensor SE1 is operated, a fault detection controlling circuit 4a is reset, and if the crime preventing sensor SE1 is faulty, said circuit is not reset but holds a set state. Also, when a crime prevention start switch SW1 is turned on, an AND circuit 4d for inputting an output signal of the fault detection controlling circuit 4a and an output signal of the crime prevention start switch SW1 outputs a signal, and by this output signal, a sensor fault memory 4b is operated, holds it in itself and also sends it out to a fault informing device 5. As a result, a display means 5a is operated and a fault is informed, and simultaneously, the fault is informed to the monitor center througha telephone circuit 5b.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a failure checking device for a crime prevention sensor provided in a crime prevention reporting system.

Conventionally, crime prevention sensors have rarely operated due to their functions, so finding a malfunction in a short period of time has been a difficult task and actually requires a lot of manpower.

This invention solves the above problem, and provides a security sensor failure check device that can easily and automatically check the failure of a crime prevention sensor by using the movement of a person when the security system is not alerted. The purpose is to provide the following.

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

FIG. 1 shows an embodiment of the present invention. In FIG. 1, 1 is a security control circuit consisting of 7 lips, 70 tabs, etc., which is set by the crime prevention activation switch SW+ and reset by the crime prevention release switch SWm. It is something that 2 is an intrusion detection memory, and an AND circuit A which inputs the logical product of the output signal of the security control circuit 1 and the output signal of the security sensor SEx.
The G output signal is input. 3 is an automatic notification device, and the output signal from the intrusion detection memory 2 is applied to an automatic alarm device 3a, which sounds to issue an intrusion alarm. At the same time, the information is transmitted through the telephone line 3 to a monitoring center (not shown). 4 is a failure detection device for a crime prevention sensor according to the present invention, and includes a failure detection control circuit 41.

It consists of a sensor failure memory 4, an OR circuit 4c, and an AND circuit 4d. The failure detection control circuit 4a is set by the output signal of the door opening detection switch DSW, and is set by the output signal from the security control means 1 and the security sensor SE.
It is reset by the output signal of the OR circuit 4c which inputs the output signal from 1.

The sensor failure memory 4'T) is the security activation switch SW.
The output signal of the AND circuit 4d which inputs the output signal from I and the output signal from the failure detection control circuit 2 is input. 5 is a failure detection device, and the sensor failure memo +74 b
The output signal from the display means 5& is arranged to display a failed sensor on the display means 5& and at the same time is transmitted to a monitoring center (not shown) through the telephone line 5b.

The operation of an embodiment of the present invention will be described based on the above configuration. First, the already widely known crime prevention reporting system will be explained.

When the crime prevention start switch SW+ is turned on, the crime prevention control circuit 1 is set, the crime prevention notification system is activated, and the crime prevention alarm is activated. Right now, I'm on this security alert.

Output memory 2 is set and this intrusion is detected.

The output signal is sent to the automatic notification device 3.

- When the crime prevention release switch SW2 is turned on, the crime prevention control circuit 1 is reset, and the crime prevention alarm/stem during crime prevention alert is canceled.6 Next, the operation of the crime prevention sensor failure detection device according to the present invention will be explained. .

First, while the crime prevention release switch SWz is in the ON state, that is, in the non-alarm state, the entrance/exit door open detection switch DSW is turned OFF.
If the security sensor SE+ is activated, the failure detection control circuit 4a is reset, and if the security sensor SE+ is in failure, it is not reset and remains set. do. Further, when the security activation switch SWI is turned on, that is, the security release switch SW! Turn on both the and security start switch SWt.
Then, the AND circuit 4d inputting the output signal of the failure detection control circuit 41 and the output signal of the crime prevention start switch SWr outputs an output signal, and the sensor failure memory 4b is activated by this output signal to self-hold it, and the output is A signal is sent to the failure reporting device 5.

As a result, the security sensor SE! At the same time, the display means 5a of the reporting device 5 operates and reports the malfunction of the crime prevention sensor to a monitoring center (not shown) through the telephone 5b.

As described above, one embodiment of the present invention has the following major advantages: by providing a failure detection device equipped with a failure detection control circuit and a sensor failure memory, failures in crime prevention sensors can be easily and inexpensively detected. You can get the following effect.

In the above-mentioned embodiment, the entrance/exit door open detection switch DSW is used, but if there is definitely a person passing during non-warning, the entrance/exit door open detection switch DSW is used as another embodiment of the invention. Even if the above-mentioned failure detection control circuit 4a is set by the security release switch SW, omitting the above, the same effect as in the above-mentioned embodiment can be obtained.

Further, the sensor failure memory 4b may be set only when the security sensor SE+ does not operate within a predetermined time after the entrance/exit door is opened.

In addition, the above-mentioned security sensor SE>-6Additional 1-2:2iIn the heat, there are those that detect the human body using infrared rays, ultrasonic waves, optical electromagnetic waves, etc., those that detect infrared rays, vibrations, sounds, etc. emitted by a single person, etc. It may be either.

As explained above, the present invention allows a crime prevention sensor failure to be detected easily and at a low cost by providing a failure check unit having a failure detection control circuit and a sensor failure memory in a crime prevention notification system during non-alert conditions. The result can be.

A practical effect can be obtained in that the crime prevention reporting system can be kept in a normal state at all times without failure.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram showing one embodiment of the present invention. l... Security control circuit, 2... Intrusion detection memory. 3... Automatic notification device, 4... Failure detection device, 4m... Failure detection control circuit, 4b...
...Sensor failure memory, 5...Failure reporting device, SWl... Security activation switch, SEI...
... Security sensor DSW ... Entry/exit door open detection switch. Agent Shin Kuzuno - (1 other person) Ding/Tokusode 11th Mo,! = (1%) ■j'l' Ij length [°z-dono+, i+ +'l) & characteristic 1ri-sho! $7-
Lu 786 II No. f Nc Ming's name 61st crime Senna failure check device i Sleeve 11: J-R ・Relationship with 11th work 1. 1 person with Y permission (I Mi place)
Bundle jet Tokyo Pyo 111 ward Marunouchi-j°2nd 3rd
-￥3 Name (6 (111 Shiryo Electric Co., Ltd. representative piece + 1 + f- To part 1 agent 5, subject of amendment (1) Detailed explanation of the invention in the specification column 6, contents of amendment ( 1) The statement "F switch sw2 is ON" on page 4, line 13 of the specification is corrected to "Switch S town is ON, and the security control circuit is reset." (2) Page 4, line 15 of the specification. ~Page 5, line 2, ``When the passage of a person is detected and the .
If El is normal, it detects the passage of a person and turns ON, and the failure detection control circuit is reset. On the other hand, the security sensor 8
If E is in failure, it will not be possible to detect the passage of a person, and therefore the failure control circuit 4a will not be reset and will maintain its set state. Here, when the crime prevention start switch SW is turned on to start the crime prevention reporting system," (3) "The above is crime prevention" in the 7th line of 5jj is corrected to "the crime prevention".

Claims (1)

[Scope of Claim] A crime prevention sensor that detects human intrusion, etc., and a crime prevention reporting system that reports information obtained by the crime prevention sensor to a monitoring center, etc. via an automatic reporting device. When the system is set and controlled by a door switch or other means when a person passes through a building entrance when the system is not alerted, and the security sensor that detects the person operates normally, the set operation is disabled. A failure detection means is provided to set and reset the failure detection means! I
A failure check device for a crime prevention sensor, characterized in that it is possible to determine whether or not there is a failure in the crime prevention sensor.