CN2328060Y - Cut-off alarm controller against stealing - Google Patents

Abstract

The utility model belongs to a cut-off alarm controller against stealing, which is composed of a main control module 1, a defense area condition signal driver 2, a network signal converter 3, a detection signal driver 4, an acoustic-optic alarm circuit 6 and a communication dialing drive circuit 7. The utility model is characterized in that the circuit is provided with a defense area conducting wire loop circuit, and by circularly detecting the on-off state of the conducting wire loop of the defense area conducting wire loop circuit, an alarming signal is decided to send or not. As long as the conducting wire loop is arranged on windows, doors, curtains, anti-theft nets and other articles, the conducting wire network must be broken when a thief enters a house, so an alarm is started. The utility model has the advantages of low wrong alarming rate, high reliability and low cost.

Description

The open circuit type anti-theft alarming controller

The utility model relates to a kind of anti-theft and alarm device of anti-theft and alarm device, particularly a kind of break type.

A large amount of now anti-theft and alarm devices that are used for burglary-resisting system that use, report to the police as infrared detection, by sending infrared detection signal, when object blocks infrared detection signal, alarm controller just can send alerting signal, and there is following shortcoming in this alarm controller:

1, rate of false alarm height: when the toy of family is walked about, also can report to the police sometimes;

2, poor reliability: phenomenon occurs failing to report through regular meeting;

3, warning is untimely: just enter in the protected location the robber and just report to the police;

4, cost an arm and a leg;

The purpose of this utility model is to provide a kind of reliability height, and rate of false alarm is low, cheap novel open circuit type anti-theft alarming controller.

The utility model can be realized by following measure:

The utility model is made of CPU main control module, defence area status signal driver, networking signal converter, detection signal drives device, communication dialing driving circuit, sound light alarming circuit, it is characterized in that: be provided with defence area wire loop circuit in circuit.

The networking that defence area wire loop circuit is made up of lead constitutes.

The networking of defence area wire loop circuit is made up of some wire loops.

The utlity model has reliability height, rate of false alarm is low, price is low advantage.

Referring to accompanying drawing, Fig. 1 is a functional-block diagram of the present utility model, and Fig. 2 is a signal flow graph of the present utility model, and Fig. 3 is a wiring diagram of the present utility model, and Fig. 4 is a structural representation of the present utility model.

The utility model will be further described below in conjunction with accompanying drawing:

Referring to Fig. 1,1 is that main control module, 2 is that defence area status signal driver, 3 is that networking signal converter, 4 is that detection signal drives device, 5 is that defence area wire loop circuit, 6 is that sound light alarming circuit, 7 is the driving circuit that dials of communicating by letter.

Referring to Fig. 2, the detection signal that the signal output part of main control module 1 sends is transported to the input end of detection signal drives device 4, the output terminal of process detection signal drives device 4 is transported to defence area wire loop circuit 5, the signal conveys of defence area wire loop circuit 5 outputs is to defence area status signal driver 2, the output signal of defence area status signal driver 2 is input to the input end of main control module 1, and the alerting signal of main control module 1 outputs to the sound light alarming circuit 6 and the dialing driving circuit 7 of communicating by letter respectively.

Referring to Fig. 3, main control module 1 is made of microcomputer chip CPU, and detection signal drives device 4 can be made of latch 74LS373, defence area status signal driver 2 can be made of input buffer 74LS244, and networking signal frequency conversion device 3 is by D18, D19, C3, R11, R12, N9 constitutes.

Referring to Fig. 4, the circuit assembly of controller is in housing.

The utility model is made of main control module 1, defence area status signal driver 2, networking signal converter 3, detection signal drives device 4, sound light alarming circuit 6, communication dialing driving circuit 7, it is characterized in that: be provided with defence area wire loop circuit 5 in circuit.

The networking that defence area wire loop circuit 5 is made up of lead constitutes.

The loop that the networking of defence area wire loop circuit 5 is made up of some leads is formed.

The circuit assembly of controller is 8 li of housings.

The utility model is in real work, after system's energising, export the data input pin of a high level detection signal from the data-out port of main control module 1 to detection signal drives device 4 (74LS373), cushion through latch 74LS373, high level signal is transported to the base stage of triode N1～N8 from the data output end of latch 74LS373, make triode N1～N8 conducting, high level signal is through the emitter of triode, behind networking lead S1～S8 by defence area wire loop circuit 5, through network signal transducer 3, high level signal becomes networking, defence area status signal, again with the data input pin of signal conveys to networking, defence area status signal driver 2 (input buffer 74LS244), after amplifying, the defence area status signal is transported to the data input pin of main control module 1 from the data output end of 74LS244, and main control module 1 is made corresponding processing according to the level height state of defence area status signal.

Main control module 1 constantly circulates every group of loop S is sent detection signal, and the level state in each networking, defence area S1～S8 loop is carried out scan round detect,

When any one road or a few road among the lead S1～S8 of the networking of defence area wire loop 5 are disconnected, the sensed current signal that main control module 1 sends is by behind the triode, can not form the loop by the networking lead S through disconnecting, being equivalent to the loop is disconnected, do not have current signal to be input to networking signal converter 3, make network transformation device 3 output high level to main control module 1, after main control module 1 is received high level signal, send signal and be input to sound light alarming circuit 6, send the sound and light alarm signal; Perhaps issue a signal to communication dialing driving circuit 7, issue a signal to public telephone network, be connected on the phone of setting or the beeper by public telephone network and informed theft, also can be connected to 110 alarm stations.

Networking lead S1～S8 in the defence area wire loop circuit 5 can be by on certain density and the regular article that are installed in the anti-theft net of window, curtain, curtain, door, balcony and need protection, and the quantity of networking lead S1～S8 can increase by expanding.

Be provided with automatic fault 1 li of main control module and detect, one or several in triode N1～N8 is breakdown, can detect automatically by the fault self-checking function of main control module 1, and points out by suggestion device.

Claims (4)

1, a kind of open circuit type anti-theft alarming controller, constitute by main control module 1, defence area status signal driver 2, networking signal frequency conversion device 3, detection signal drives device 4, sound light alarming circuit 6, communication dialing driving circuit 7, it is characterized in that: in circuit, be provided with defence area wire loop circuit 5.

2, open circuit type anti-theft alarming controller according to claim 1 is characterized in that: defence area wire loop circuit 5 is made up of the networking that lead constitutes;

3, open circuit type anti-theft alarming controller according to claim 2 is characterized in that: the networking of defence area wire loop circuit is made up of some wire loops.

4, open circuit type anti-theft alarming controller according to claim 1 is characterized in that: the circuit assembly of controller is 8 li of housings.

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