CN202584327U

CN202584327U - Antitheft circuit controlled by light source

Info

Publication number: CN202584327U
Application number: CN 201220093766
Authority: CN
Inventors: 张永林; 吴雄杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-14
Filing date: 2012-03-14
Publication date: 2012-12-05
Anticipated expiration: 2022-03-14

Abstract

The utility model relates to an antitheft circuit controlled by a light source. A silicon photocell EG arranged in a light struck place serves as a light-operated sensor. An input terminal of the silicon photocell EG is connected, via a potentiometer W, with a voltage stabilizing circuit that is composed of a resistor R2 and a grounded voltage stabilizing diode DW. An output terminal of the silicon photocell EG is connected to a buzzer DL and an FDD-5 emission module IC2 via a trigger circuit that is composed of a triode T1-T7 combined amplifier and a relay J. The silicon photocell of the circuit is adopted to serve as the light-operated sensor, the trigger circuit is collected through shading signals formed by the triode, the relay and the like, and module circuits are emitted and received via a wireless way, thereby solving problems of wiring difficulties of a wired way and high costs, avoiding disadvantages that infrared sensing circuits are adopted by most conventional antitheft circuits and are high in rate of false alarm, and realizing remote real-time monitoring functions. The antitheft circuit can be applied to lamps of households, banks and factories for antitheft alarming, is large in lighting area, is sensitive to light and is high in sensitivity, etc.

Description

A kind of anti-theft circuit that utilizes light source control

Technical field

The utility model relates to a kind of anti-theft circuit, particularly be a kind of anti-theft circuit that utilizes light source control.

Background technology

The most existing anti-theft circuit all adopts the infrared induction circuit, and it has shortcomings such as rate of false alarm height, line wiring difficulty, cost height, and can't realize remote monitoring.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of anti-theft circuit that utilizes light source control is provided.

The utility model solves the technical scheme that its technical matters adopted: a kind of anti-theft circuit that utilizes light source control; By being installed in the local silicon photocell EG of Mingguang City's irradiation as light control sensor; The input end of said silicon photocell EG is connected with the mu balanced circuit that the zener diode DW by resistance R 2, ground connection constitutes through potentiometer W, and the output terminal of silicon photocell EG is connected to hummer DL and FDD-5 transmitter module IC2 through the trigger circuit that triode T1-T7 composite amplifier, relay J constitute.

It is the silicon photocell of 2*2cm that said silicon photocell EG adopts specification.

Said silicon photocell EG is made up of two silicon photocell series connection.

The output terminal of said trigger circuit is connected to FDD-5 transmitter module IC2 through triode Q1.

The output signal of said FDD-5 transmitter module IC2 sends to JDD-5 receiver module IC1.

Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: the utility model adopts silicon photocell as light control sensor, the shielding signals trigger collection circuit that is made up of together triode, relay etc.; And employing wireless transmit and receiver module circuit; Solve the problem that wired wiring is difficult, cost is high, avoided most anti-theft circuit to adopt infrared induction circuit, the shortcoming that rate of false alarm is high simultaneously; Realize the remote real-time monitoring function; Can be used for family, bank, factory lamp burglar alarm, it is big to have daylighting area, advantage such as, sensitivity height easy to light.

Description of drawings

Fig. 1 is the circuit theory diagrams of the utility model;

Fig. 2 is the circuit theory diagrams of the utility model JDD-5 receiver module.

Embodiment

Like Fig. 1, shown in Figure 2; A kind of anti-theft circuit that utilizes light source control of the utility model; By being installed in the local silicon photocell EG of Mingguang City's irradiation as light control sensor, it is the silicon photocell of 2*2cm that said silicon photocell EG adopts specification, is made up of two silicon photocell series connection.The input end of said silicon photocell EG is connected with the mu balanced circuit that the zener diode DW by resistance R 2, ground connection constitutes through potentiometer W; The output terminal of silicon photocell EG is connected to hummer DL and FDD-5 transmitter module IC2 through the trigger circuit that triode T1-T7 composite amplifier, relay J constitute; The output terminal of said trigger circuit is connected to FDD-5 transmitter module IC2 through triode Q1, and the output signal of FDD-5 transmitter module IC2 sends to JDD-5 receiver module IC1.

In case the thief comes interim, at ordinary times, illumination is arranged to silicon photocell EG; Resistance R 2, DW form the 5V mu balanced circuit, to silicon photocell EG suitable WV are provided, and the anodal Weak current of silicon photocell EG is flowed out; After triode T1, the compound amplification of T2, make triode T6 saturation conduction, triode T5-T7 all is in and ends; Relay J does not have not adhesive of voltage, and its normally opened contact JK still is in disconnection, and hummer DL does not send chimes of doom.In case the thief occurs, silicon photocell EG light is blocked, and triode T1, T2, T3 all end, and pressure drop is almost 0V on resistance R 4; Triode T4 ends, then conducting of triode T5, and the 5V current potential charges to capacitor C with its c-e utmost point through triode T5; When capacitor C voltage 1.4V is above, triode T6, T7 conducting, relay J adhesive; Normally opened contact JK is closed, and hummer DL obtains electricity and sends loud chimes of doom, and its time of keeping is determined by the capacitor C capacity.Because triode T6, T7 conducting, the collector of triode T7 is in low-potential state, through resistance R 10 current limlitings; Make triode Q1 conducting; Be input to the 2nd pin of FDD-5 transmitter module IC2, and deliver to its 3rd pin modulation signal input end CP, the high-frequency signal of emission is modulated.The TX antenna is promptly externally launched modulated frequency electromagnetic waves.

Form the wireless receiving warning circuit by JDD-5 receiver module IC1, loudspeaker Y, resistance R 11 etc.; The 4th pin audio signal output end CPA of JDD-5 receiver module IC1 directly drives common electrical dynamic formula loudspeaker Y sounding; Its 2nd pin data output end output high level makes LED 1 get electroluminescence simultaneously; Expression receives the alerting signal of extension set, and the existing unauthorized person invasion of prompting please be use up the security personnel and reached the spot as early as possible.

An above-described preferred embodiment that is merely the utility model can not limit the scope that the utility model is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. anti-theft circuit that utilizes light source control; It is characterized in that: by being installed in the local silicon photocell EG of Mingguang City's irradiation as light control sensor; The input end of said silicon photocell EG is connected with the mu balanced circuit that the zener diode DW by resistance R 2, ground connection constitutes through potentiometer W, and the output terminal of silicon photocell EG is connected to hummer DL and FDD-5 transmitter module IC2 through the trigger circuit that triode T1-T7 composite amplifier, relay J constitute.

2. a kind of anti-theft circuit that utilizes light source control according to claim 1 is characterized in that: it is the silicon photocell of 2*2cm that said silicon photocell EG adopts specification.

3. a kind of anti-theft circuit that utilizes light source control according to claim 1 and 2 is characterized in that: said silicon photocell EG is made up of two silicon photocell series connection.

4. a kind of anti-theft circuit that utilizes light source control according to claim 1 is characterized in that: the output terminal of said trigger circuit is connected to FDD-5 transmitter module IC2 through triode Q1.

5. a kind of anti-theft circuit that utilizes light source control according to claim 1 is characterized in that: the output signal of said FDD-5 transmitter module IC2 sends to JDD-5 receiver module IC1.