CN202939753U

CN202939753U - Laser warning device

Info

Publication number: CN202939753U
Application number: CN 201220552449
Authority: CN
Inventors: 郭峻因
Original assignee: CHENGDU JIANGFA TECHNOLOGY Co Ltd
Current assignee: CHENGDU JIANGFA TECHNOLOGY Co Ltd
Priority date: 2012-10-26
Filing date: 2012-10-26
Publication date: 2013-05-15
Anticipated expiration: 2022-10-26

Abstract

The utility model relates to the security and protection technical field and provides a laser warning device. The object of the utility model is to provide a laser warning device which has strong anti-jamming capability and simple circuits. The laser warning device includes a sounding integrated circuit chip KD9562, a rectifier bridge, a laser, a photoresistor RG, a triode VT1 and a triode VT2, a loudspeaker, and resistors from a resistor R1 to a resistor R3; the laser is connected with an output end of the rectifier bridge; the photoresistor RG is connected in series with the resistor R2 and thereafter is connected with the output end of the rectifier bridge; a base of the triode VT1 is connected between the resistor R2 and the photoresistor RG; a collector of the triode VT1 is connected with a 12 pin of the sounding integrated circuit chip KD9562; an emitter of the triode VT1 is connected with a negative pole output end of the rectifier bridge; a collector of the triode VT2 is connected with one end of the loudspeaker; the other end of the loudspeaker is connected with a positive pole output end of the rectifier bridge; and a base of the triode VT2 is connected with is connected with a 8 pin of the sounding integrated circuit chip KD9562.

Description

A kind of laser alarm installation

Technical field

The utility model relates to technical field of security and protection, and a kind of laser alarm installation is provided.

Background technology

The traditional alert device is often take infrared ray, ultrasound wave, microwave etc. as probing medium, they are all with the conical surface or sphere space radiation towards periphery, the signal energy that receiving trap is received only accounts for the minimum part of emittance, therefore receiving trap requires to have very high gain, stronger antijamming capability, make circuit complicated, be difficult to make.As everyone knows, the directivity of laser is extremely strong, and also without obviously scattering, energy almost all concentrates on propagation lines, if take laser as probing medium, can make receiving circuit become very simple, and operating distance will increase greatly through long-distance communications.

Summary of the invention

The purpose of this utility model is to provide a kind of stronger antijamming capability, the simple a kind of laser alarm installation of circuit.

The utility model is by the following technical solutions to achieve these goals:

a kind of laser alarm installation is characterized in that: comprise sound-producing integrated circuit chip KD9562, rectifier bridge, laser instrument, photoresistance RG, triode VT1, VT2, loudspeaker, resistance R 1-R3, described laser instrument connects rectification bridge output end, described photoresistance RG with connect rectification after resistance R 2 is connected and strike output terminal, the base stage of the indirect triode VT1 of described R2 and GR, 12 pins of the collector sending and receiving sound integrated circuit (IC) chip KD9562 of triode VT1, the emitter of VT1 connects the cathode output end of rectifier bridge, the collector of described VT2 connects loudspeaker one end, the cathode output end of another termination rectifier bridge of loudspeaker, 8 pins of the base stage sending and receiving sound integrated circuit (IC) chip KD9562 of VT2, the emitter of VT2 connects the cathode output end of rectifier bridge, 9 pins of sound integrated circuit (IC) chip KD9562 connect the cathode output end of rectifier bridge, 11 pin of sound integrated circuit (IC) chip KD9562 are connected by resistance R 3 with 10 pin.

The utility model possesses antijamming capability strong, the simple advantage of circuit structure because adopted above technical scheme.

Description of drawings

Fig. 1 is the utility model circuit diagram.

Embodiment

the utility model provides a kind of laser alarm installation, it is characterized in that: comprise sound-producing integrated circuit chip KD9562, rectifier bridge, laser instrument, photoresistance RG, triode VT1, VT2, loudspeaker, resistance R 1-R3, described laser instrument connects rectification bridge output end, described photoresistance RG with connect rectification after resistance R 2 is connected and strike output terminal, the base stage of the indirect triode VT1 of described R2 and GR, 12 pins of the collector sending and receiving sound integrated circuit (IC) chip KD9562 of triode VT1, the emitter of VT1 connects the cathode output end of rectifier bridge, the collector of described VT2 connects loudspeaker one end, the cathode output end of another termination rectifier bridge of loudspeaker, 8 pins of the base stage sending and receiving sound integrated circuit (IC) chip KD9562 of VT2, the emitter of VT2 connects the cathode output end of rectifier bridge, 9 pins of sound integrated circuit (IC) chip KD9562 connect the cathode output end of rectifier bridge, 11 pin of sound integrated circuit (IC) chip KD9562 are connected by resistance R 3 with 10 pin.

The utility model principle of work: the elements such as simulated sound integrated circuit (IC) consist of accepts circuit, the laser launched of laser bar just in time is radiated on photoresistance Rg at ordinary times, and Rg is low resistive state, and triode VT1 ends because of the base stage electronegative potential, IC does not work, and loudspeaker Y is sounding not.In case have people or object to enter warning region blocking light path, resistance becomes large to Rg less than illumination owing to being subjected to, and VT1 is because of base potential rising saturation conduction, and IC gets electric work, and the sound signal of output promotes loudspeaker and sends chimes of doom after triode VT2 amplifies.Because circuit is in the little electric current state that works long hours, therefore adopt the capacitance decompression power supply mode, civil power obtains approximately 4.7V voltage, the whole device of powering after capacitor C 1 step-down, VD1 ~ VD4 bridge rectifier, C2 filtering, VDW voltage stabilizing.

Laser instrument of the present utility model adopts diode laser bar, and volume is small and exquisite, and is only slightly large than adult's thumb; Rated voltage is 4.5V, and during emission, power consumption only about 28mA, can produce the red laser of wavelength 640nm ~ 680nm, and range can reach 1200m, is desirable lasing light emitter.

Claims

1. a laser alarm installation, is characterized in that: comprise sound-producing integrated circuit chip KD9562, rectifier bridge, laser instrument, photoresistance RG, triode VT1, VT2, loudspeaker, resistance R 1-R3, described laser instrument connects rectification bridge output end, described photoresistance RG with connect rectification after resistance R 2 is connected and strike output terminal, the base stage of the indirect triode VT1 of described R2 and GR, 12 pins of the collector sending and receiving sound integrated circuit (IC) chip KD9562 of triode VT1, the emitter of VT1 connects the cathode output end of rectifier bridge, the collector of described VT2 connects loudspeaker one end, the cathode output end of another termination rectifier bridge of loudspeaker, 8 pins of the base stage sending and receiving sound integrated circuit (IC) chip KD9562 of VT2, the emitter of VT2 connects the cathode output end of rectifier bridge, 9 pins of sound integrated circuit (IC) chip KD9562 connect the cathode output end of rectifier bridge, 11 pin of sound integrated circuit (IC) chip KD9562 are connected by resistance R 3 with 10 pin.