CN202003468U

CN202003468U - Home-use passive infrared alarm

Info

Publication number: CN202003468U
Application number: CN2011200848046U
Authority: CN
Inventors: 胡晓光; 李忠良
Original assignee: CHANGCHUN ZEUS INFORMATIONSAFE INDUSTRY SHARE Co Ltd
Current assignee: CHANGCHUN ZEUS INFORMATIONSAFE INDUSTRY SHARE Co Ltd
Priority date: 2011-03-28
Filing date: 2011-03-28
Publication date: 2011-10-05
Anticipated expiration: 2021-03-28

Abstract

The utility model discloses a home-use passive infrared alarm. The signal end of a passive infrared detector is connected to the external interrupt interface of a singlechip, so that induction signals are transmitted to the singlechip, and the singlechip carries out internal comparison process through a program to judge whether alarm is needed or not; the signal output interface of the singlechip is connected to the trigger end of a voice chip, corresponding control signals are sent to the voice chip, and the PWM (Pulse-Width Modulation) end of the voice chip is connected to a loudspeaker to send out alarm signals; and the signal output end of the singlechip is connected to the trigger end of a monitor to control the on/off of the monitor. The home-use passive infrared alarm adopts the passive infrared detector to work as an infrared ray sensor to detect infrared ray about 10UM given out by human body. Compared with other alarm products in the market, the alarm has the advantages of small volume, wide coverage, easiness in concealment, simplicity in operation, low cost, energy conservation, and environment friendliness, is truly intelligent in function level, can automatically enter into a standby state in normal times, and is automatically triggered to pre-alarm when people pass by.

Description

Home-use passive type Infrared intrusion detector

Technical field

The utility model discloses a kind of home-use passive type Infrared intrusion detector, is applied to the household safe safeguard, belongs to the alarm technical field.

Background technology

Existing alarm uses the active infrared detection device mostly, by infrared transmitter, infrared receiving set and alarm controller are formed, because the light velocity of emission is narrower, the sending and receiving end is usually reported by mistake because of displacement problem, and active detector surveys is point-to-point, rather than the scope of a face, if deployed troops on garrison duty in a space, then need a plurality of active detectors, complex structure, cost is very high, price is high, and major part is applicable to that public places such as company, unit, supermarket and sub-district use, and is not suitable for the home security warning and uses.If design and produce a kind of inexpensive, reliable burglar alarm of performance sensitive, will bring into play effective function more aspect antitheft and the assurance property safety.

Summary of the invention

The utility model discloses a kind of home-use passive type Infrared intrusion detector, and it is little to have solved existing active infrared alarm monitoring space, complex structure, the shortcoming that cost is high.

The utility model technical solution is as follows:

Form by single-chip microcomputer, speech chip, loudspeaker, watch-dog and passive type infrared eye; Wherein, the signal end of passive type infrared eye connects the external interrupt interface of single-chip microcomputer, transmits induced signal to single-chip microcomputer, and single-chip microcomputer carries out inner comparison process by program, judges whether to report to the police; The signal output interface of single-chip microcomputer connects the trigger end of speech chip, and sends corresponding control signal and trigger speech chip, and the PWM end of speech chip connects the loudspeaker signal that gives the alarm, and the single-chip microcomputer signal output part connects the watch-dog trigger end, the control monitor switch.

This alarm has adopted single-chip microcomputer to carry out Based Intelligent Control, the infrared eye signal that single-chip microcomputer can be gathered, thus the difference of judging signal enters corresponding alert levels, drives speech chip and watch-dog.

Open alarm switch, alarm has half a minute time delayed signal, prevent to produce when the user from opening alarm wrong report, the initialization of program is carried out in single-chip microcomputer inside simultaneously, half a minute, pilot lamp was bright later starts working, during work in two kinds of situation, when the no one, infrared eye is not owing to sense people's signal, so output terminal is a low level signal, at this moment all zone bits of single-chip microcomputer internal processes automatic clear, single-chip microcomputer enters holding state (battery saving mode), and at this moment the power consumption of single-chip microcomputer and other chips drops to minimum; When the people enters regional that infrared eye can survey, detector produces high level signal and sends signal to single-chip microcomputer external interrupt interface, high level signal activates single-chip microcomputer and enters mode of operation, single-chip microcomputer internal processes judgement symbol position, thereby producing, identification alert levels control speech chip reports to the police, open watch-dog video recording recording simultaneously, the time is controlled by the single-chip microcomputer internal processes.Two ranks of warning branch, the sound of warning can be reminded the user on the one hand, plays threatening effractor's effect on the one hand, and while monitoring video machine will be recorded a video to record and be deposited the sd card in so that assist the police to solve a case in the future.The utility model can be monitored according to the customer requirements whole day, or night monitoring only.

Good effect of the present utility model is:Utilize the passive type infrared eye as infrared ray sensor, carry out work by the infrared ray about the 10UM that surveys the human body emission, compare other warning series products on the market, this warning body is long-pending little, and broad covered area is easy to hide, simple to operate, cost is low, and energy-conserving and environment-protective have reached real intelligence on the function, can enter holding state automatically at ordinary times, if someone process can trigger the beginning pre-alarm automatically, can be widely used in the security precautions technology field of family.

Description of drawings

Fig. 1 is the utility model circuit theory diagrams.

Embodiment:

According to shown in Figure 1, by single-chip microcomputer, speech chip, loudspeaker, watch-dog and passive type infrared eye are formed the utility model, wherein, the signal end of passive type infrared eye connects the external interrupt interface P3_3 of single-chip microcomputer (model is stc12c5410ad), transmit induced signal to single-chip microcomputer, single-chip microcomputer carries out inner comparison process by program, judge alert levels, send alerting signal, the single-chip microcomputer signal output interface connects the trigger end of speech chip, and sends the work of corresponding control signal triggering speech chip, and speech chip model type selecting is rpf92600, can send two kinds of alarm voices, but the design of voice actual conditions; The P2_6 pin of single-chip microcomputer connects the TG1 end of speech chip, and the P2_7 pin connects the TG2 end of speech chip, and the PWM end of speech chip gives the alarm by driving loudspeaker; The P1_3 pin of single-chip microcomputer connects the monitor switch end, the work of control watch-dog.

The model of passive type infrared eye is GH-718, its front end can be provided with a Fresnel Lenses: the special optical principle of utilizing lens, produce " blind area " and " highly sensitive district " of an alternate in detector the place ahead, to improve its detection receiving sensitivity.It is out-of-date to walk before the lens as the people, and the infrared ray that human body sends just constantly alternately enters " highly sensitive district " from " blind area ", and the infrared signal that receives is imported with dynamic impulse form, thus its energy discharge amplitude by force.

Claims

1. a home-use passive type Infrared intrusion detector is characterized in that: be made up of single-chip microcomputer, speech chip, loudspeaker, watch-dog and passive type infrared eye; The signal end of passive type infrared eye connects the external interrupt interface of single-chip microcomputer, transmits induced signal to single-chip microcomputer, and single-chip microcomputer carries out inner comparison process by program, judges whether to report to the police; The signal output interface of single-chip microcomputer connects the trigger end of speech chip, and sends corresponding control signal and trigger speech chip, and the PWM end of speech chip connects the loudspeaker signal that gives the alarm, and the single-chip microcomputer signal output part connects the watch-dog trigger end, the control monitor switch.