CN103680021A

CN103680021A - Infrared alarm

Info

Publication number: CN103680021A
Application number: CN201310609147.6A
Authority: CN
Inventors: 李亮
Original assignee: Chengdu Jetcom Technology Co Ltd
Current assignee: Chengdu Jetcom Technology Co Ltd
Priority date: 2013-11-27
Filing date: 2013-11-27
Publication date: 2014-03-26

Abstract

The invention relates to the field of security technologies, in particular to an infrared alarm comprising a transmitter, a receiver, and an infrared intrusion detection alarm device. The transmitter is an RCM-1A transmitting module. The receiver comprises an RCM-1B receiving module, a decade count frequency divider digital integrated circuit, and a transistor switch VT circuit. A pin 2 of the RCM-1B receiving module is connected with a pin 15 of a CD4017 decade counter through a diode VD1. Pins 2, 7, 1, 6 and 11 of the CD4017 decade counter are all connected with a resistor R12 through diodes. The resistor R12 is connected with a base of the triode VT1. The triode VT1 serves as a switch between the rear infrared intrusion detection alarm device and a power source. The infrared intrusion detection alarm device comprises an alarm master circuit and a control circuit. The alarm master circuit comprises an alarm bell and a relay KA normally-open moving closed contact. The alarm bell is connected to a power grid through the relay KA normally-open moving closed contact.

Description

A kind of infrared warning device

Technical field

The present invention relates to technical field of security and protection, a kind of infrared warning device is provided.

Background technology

Current 21 century, antitheft, the topics such as safety have become the topic that we more and more pay close attention to.Be in the biggest obstacle of common burglar alarm is installed, the sensor being arranged on door and window will be received the report for police service on device with wire exactly, this can bring various constant to household's daily life.In addition, common burglar alarm always just sends chimes of doom after theft is swarmed into, and now door, window and all subjects to severe risks of damage of many inside plants.The preferred plan visible, alarm is installed in family, yes stops theft to swarm into room, rather than etc. burglar swarm into rear ability detection alarm and frightened away.In order to reach such object, might as well take a kind of distinguished antitheft scheme---installation infrared linear light electric alarms based on pattern recognition, it is a kind of important surveillance, can be applicable under airport, storehouse, place of military importance and high temperature, the rugged surroundings such as high and cold, high-risk, also be applicable to the warning of threshing ground, rural area, animal barn simultaneously, and other occasion that need to set up defences.

Existing infrared photo alarm system adopts single-chip microcomputer and sensor construction more, and this structural circuit is comparatively complicated, and cost is slightly expensive.

Summary of the invention

The object of the present invention is to provide a kind of with low cost, stable performance, a kind of infrared warning device simple in structure.

The present invention is to achieve these goals by the following technical solutions:

A kind of infrared warning device, it is characterized in that: comprise transmitter, receiver, infrared emission warning device, transmitter is RCM-lA transmitter module, receiver comprises RCM-1B receiver module, decimal system frequency-dividing counter digital integrated circuit and thyristor switch vt circuit, 2 pins of RCM-lB receiver module are connected with 15 pin of CD4017 decade counter by diode VD1, 2 of CD4017 decade counter, 7, 1, 6, 11 pins are all by diode connecting resistance R12, resistance R 12 connects the base stage of triode VT, triode VT is as the switch between rear end infrared emission warning device and power supply, infrared emission warning device, it comprises warning main circuit and control circuit, described warning main circuit comprises that alarm bell and relay K A often start closed contact, described alarm bell often starts closed contact access electrical network by relay K A, described control circuit comprises, infrarede emitting diode, infrared phototriode VT1, adjustable resistance RP1-RP3, resistance R 1-R8, triode VT2-VT5, filter capacitor C, relay K A, diode VD, described infrarede emitting diode, R1, after adjustable resistance RP1 series connection, connect power positive cathode, described infrared phototriode VT1 collector meets adjustable resistance RP2, infrared phototriode VT1 emitter is by resistance R 2 ground connection, infrared phototriode VT1 base stage connects the base stage of triode VT2, the collector of triode VT2 meets R3, the grounded emitter of triode VT2, the base stage of triode VT3 connects the collector of triode VT2, the collector connecting resistance R4 of triode VT3, the emitter of triode VT3 is by R5 ground connection, the base stage of triode VT4 connects the emitter of triode VT3, triode VT4 provides collector voltage by electronics R7, the emitter of triode VT4 meets adjustable rheostat RP3, the grounded emitter of triode VT5, triode VT5 connects the collector of triode VT4 by resistance R 8, described relay K A one end is connected with the collector of triode VT5, another termination power, relay K A two ends are provided with fly-wheel diode VD.

Because the present invention has adopted above technical scheme, can find out suitable simple of its structure, components and parts are few, with low cost.

Accompanying drawing explanation

Fig. 1 is the physical circuit figure of invention.

Embodiment

The present invention realizes the induction of circuit to human body or object.The function of infra-red alarm circuit is that to utilize light activated element to connect its function of infrared transmitter be to utilize the pulse of infrared light-emitting diode utilizing emitted light, thereby the light pulse that transmitting-receiving shoots out, and light pulse signal is converted into electric signal, it is amplified simultaneously.First switch on power, infrarede emitting diode VL sends infrared light, receive a branch of infrared light, and be translated into the signal voltage of same frequency, after infrared ray full range amplifying circuit amplifies, sending into phototriode VT1 receives after infrared light, its internal resistance decline (conducting), triode VT2 obtains base bias and conducting, VT3(notes positive-negative-positive pipe) obtain base stage negative bias and conducting, VT4 is by the collection of resistance R 4 and VT3---and emitter-base bandgap grading internal resistance obtains base bias and conducting, VT5 due to base stage just and bias voltage is too small ends, relay K A is in release conditions, it is often opened to get an electric shock and disconnects, alarm bell HA does not ring.After infrared light is blocked by human body, in phototriode VT1, resistive is very large, triode VT2, VT3, VT4 cut-off, and VT5 conducting, relay K A adhesive, it often opens the closure of getting an electric shock, and electric bell HA sends chimes of doom.

A kind of infrared warning device comprises transmitter, receiver, vibration alarm, transmitter has only been used a RCM-lA(IC module) transmitter module, receiver is by receiver module IC2(RCM-1 B), several parts such as decimal system frequency-dividing counter digital integrated circuit IC3 and thyristor switch vt circuit form.

The odd number output terminal Q1 of decimal system frequency-dividing counter digital integrated circuit IC3, Q3, Q5, Q7, Q9 is connected to the left end of resistance R 12 by diode, as long as while having any output terminal output high level in 5 odd number output terminals, the base stage that this high level adds to transistor VT through R2 makes its conducting, the even number output terminal Q0 of IC3, Q2, Q4, Q6, Q8 is all unsettled not to be connect.Capacitor C 3 and resistance R 1 form the electrify restoration circuit of switch, during just energising, the R end of decimal system frequency-dividing counter digital integrated circuit IC3 obtains positive pulse, frequency-dividing counter IC3 resets, it exports high level, other output terminals are low level, thus transistor VT cut-off, rear end vibration alarm dead electricity.

RCM-lA transmitter module IC1 and RCM-1 B receiver module IC2 are RCM-lA and RCM-I B transmitter module and the receiver module of pairing, the 2 pin output low levels of RCM-1 B receiver module IC2 at ordinary times, when pressing RCM-lA transmitter module button SB, RCM-1 B receiver module IC2 pin output high level; While unclamping SB, 2 pin of RCM-1 B receiver module IC2 recover low level.So often click SB, 2 pin of RCM-1 B receiver module IC2 are just held count pulse of defeated people by diode VD1 to the CP of decimal system frequency-dividing counter digital integrated circuit IC3, decimal system frequency-dividing counter digital integrated circuit IC3 is counted, and 10 output terminal ministers in ancient times of decimal system frequency-dividing counter digital integrated circuit IC3 are once the wonderful high level of exporting in turn successively.From upper surface analysis, if repeatedly press button SB, just there is high level and low level in the even number output terminal group of IC3 and odd number output terminal group in turn.In odd number output terminal group, have one to occur high level, vibration alarm is energising just; While having one to occur high level in even number output terminal group, vibration alarm is with regard to dead electricity.So press transmitting button, can control easily vibration alarm work.

Claims

1. an infrared warning device, it is characterized in that: comprise transmitter, receiver, infrared emission warning device, transmitter is RCM-lA transmitter module, receiver comprises RCM-1B receiver module, decimal system frequency-dividing counter digital integrated circuit and thyristor switch vt circuit, 2 pins of RCM-lB receiver module are connected with 15 pin of CD4017 decade counter by diode VD1, 2 of CD4017 decade counter, 7, 1, 6, 11 pins are all by diode connecting resistance R12, resistance R 12 connects the base stage of triode VT, triode VT is as the switch between rear end infrared emission warning device and power supply, infrared emission warning device, it comprises warning main circuit and control circuit, described warning main circuit comprises that alarm bell and relay K A often start closed contact, described alarm bell often starts closed contact access electrical network by relay K A, described control circuit comprises, infrarede emitting diode, infrared phototriode VT1, adjustable resistance RP1-RP3, resistance R 1-R8, triode VT2-VT5, filter capacitor C, relay K A, diode VD, described infrarede emitting diode, R1, after adjustable resistance RP1 series connection, connect power positive cathode, described infrared phototriode VT1 collector meets adjustable resistance RP2, infrared phototriode VT1 emitter is by resistance R 2 ground connection, infrared phototriode VT1 base stage connects the base stage of triode VT2, the collector of triode VT2 meets R3, the grounded emitter of triode VT2, the base stage of triode VT3 connects the collector of triode VT2, the collector connecting resistance R4 of triode VT3, the emitter of triode VT3 is by R5 ground connection, the base stage of triode VT4 connects the emitter of triode VT3, triode VT4 provides collector voltage by electronics R7, the emitter of triode VT4 meets adjustable rheostat RP3, the grounded emitter of triode VT5, triode VT5 connects the collector of triode VT4 by resistance R 8, described relay K A one end is connected with the collector of triode VT5, another termination power, relay K A two ends are provided with fly-wheel diode VD.