CN204288407U - A kind of based on Single-chip Controlling IR alarm system - Google Patents

A kind of based on Single-chip Controlling IR alarm system Download PDF

Info

Publication number
CN204288407U
CN204288407U CN201420789202.4U CN201420789202U CN204288407U CN 204288407 U CN204288407 U CN 204288407U CN 201420789202 U CN201420789202 U CN 201420789202U CN 204288407 U CN204288407 U CN 204288407U
Authority
CN
China
Prior art keywords
circuit
signal input
signal output
input part
infrared sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420789202.4U
Other languages
Chinese (zh)
Inventor
易正江
刘三军
张彦锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiaozuo university
Original Assignee
Jiaozuo university
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiaozuo university filed Critical Jiaozuo university
Priority to CN201420789202.4U priority Critical patent/CN204288407U/en
Application granted granted Critical
Publication of CN204288407U publication Critical patent/CN204288407U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of based on Single-chip Controlling IR alarm system, comprise power supply, processor, pyroelectric infrared sensor, amplifying circuit, light emitting diode warning circuit, audible alarm circuit and reset circuit, power supply is system power supply, the signal output part of pyroelectric infrared sensor connects the signal input part of amplifying circuit, a signal input part of the signal output part connection handling device of amplifying circuit, another signal input part of reset-circuit signal output terminal connection handling device; The signal input part of a signal output part connecting luminous diode warning circuit of processor, another signal output part of processor connects the signal input part of audible alarm circuit.The utility model have employed pyroelectric infrared sensor, and its making is simple, cost is low, install more convenient, and theftproof performance is more stable, and antijamming capability is strong, highly sensitive, safe and reliable.This alarm is installed hidden, is not easily found by robber.

Description

A kind of based on Single-chip Controlling IR alarm system
Technical field
The utility model relates to burglar alarm technical field, particularly a kind of based on Single-chip Controlling IR alarm system.
Background technology
People's living standard improves constantly, and to the protective awareness of private property in continuous enhancing, thus proposes new requirement to anti-theft measure.The design is exactly needs in order to meet the unscheduled events such as pre-rob-proof, theft and the guard against theft and alarm system designed.
Just equipment mainly contains the various alarms such as pressure activated formula burglar alarm, switch electronic burglar alarm and pressure shading triggering type anti-theft alarming device on the market at present, but all there are some shortcomings in this several more common alarm: (one) pressure activated formula burglar alarm is arranged in mat because pressure is board-like, when main frame quits work, be easy to lose report and wrong report, its reliability is low.(2) switching regulator electronic anti-theft alarm generally only has a fixed point, and effective range is little, and various switch is also perishable, loses report and rate of false alarm just height, unreliable.(3) light shading type triggers burglar alarm and will cause wrong report being subject to sunlight, if having covered light also can cause wrong report, so the reliability of this alarm is not high simultaneously yet.Further, with regard to closed-circuit control circuit burglary-resisting system: its installation complex circuit, and technical requirement is higher, and price also costly, is unfavorable for extensive utilization.
Summary of the invention
The purpose of this utility model to provide a kind of based on Single-chip Controlling IR alarm system.
For achieving the above object, the utility model is implemented according to following technical scheme:
A kind of based on Single-chip Controlling IR alarm system, comprise power supply, processor, pyroelectric infrared sensor, amplifying circuit, light emitting diode warning circuit, audible alarm circuit and reset circuit, described power supply is system power supply, the signal output part of pyroelectric infrared sensor connects the signal input part of amplifying circuit, a signal input part of the signal output part connection handling device of amplifying circuit, another signal input part of described reset-circuit signal output terminal connection handling device; The signal input part of a signal output part connecting luminous diode warning circuit of described processor, another signal output part of processor connects the signal input part of audible alarm circuit.
Further, described processor is AT89C51 single-chip microcomputer.
As further preferred version of the present utility model, described pyroelectric infrared sensor front end is provided with Fresnel Lenses.
As further preferred version of the present utility model, described amplifying circuit is integrated operational amplifier LM324.
Principle of work: be arranged on the pyroelectric infrared sensor on monitoring point and convert the infrared spectrum of human body radiation to electric signal, after amplifying circuit amplifies, deliver to AT89C51 single-chip microcomputer, single-chip microcomputer sends intrusion alarm state control signal in real time.AT89C51 single-chip microcomputer carries delay circuit, single-chip microcomputer presignal delay 10s a period of time automatically terminates after can be set, also alerting signal can be removed manually, then by light emitting diode warning circuit display alarm number of times, after alert is eliminated, reset circuit makes system reset, or has realization automatically to eliminate warning after sound and light alarm 10s clock.
Compared with prior art, the utility model have employed pyroelectric infrared sensor, and its making is simple, cost is low, install more convenient, and theftproof performance is more stable, and antijamming capability is strong, highly sensitive, safe and reliable.This alarm is installed hidden, is not easily found by robber, and its signal is convenient after Single Chip Microcomputer (SCM) system process simultaneously communicates with PC, is convenient to multi-user's unified management and user operation.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present utility model;
Fig. 2 is the structural representation of pyroelectric infrared sensor of the present utility model;
Fig. 3 is the circuit diagram of pyroelectric infrared sensor of the present utility model;
Fig. 4 is amplification circuit diagram of the present utility model;
Fig. 5 is reset circuit figure of the present utility model;
Fig. 6 is light emitting diode warning circuit figure of the present utility model;
Fig. 7 is audible alarm circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, is used for explaining the utility model in the illustrative examples of this utility model and explanation, but not as to restriction of the present utility model.
One is as shown in Figure 1 based on Single-chip Controlling IR alarm system, comprise power supply, processor, pyroelectric infrared sensor, amplifying circuit, light emitting diode warning circuit, audible alarm circuit and reset circuit, described power supply is system power supply, the signal output part of pyroelectric infrared sensor connects the signal input part of amplifying circuit, a signal input part of the signal output part connection handling device of amplifying circuit, another signal input part of described reset-circuit signal output terminal connection handling device, the signal input part of a signal output part connecting luminous diode warning circuit of described processor, another signal output part of processor connects the signal input part of audible alarm circuit, processor is AT89C51 single-chip microcomputer, AT89C51 single-chip microcomputer is Atmel company of U.S. production low-voltage, high-performance CMOS 8 single-chip microcomputers, sheet include 4k bytes can be repeatedly erasable read-only program memory (EPROM) and the random access data storage (RAM) of 128 bytes, device adopts the high density of Atmel company, non-volatile access technique is produced, compatibility standard MCS-51 order set, sheet built-in general-purpose 8 central processing units (CPU) and Flash storage unit, powerful.AT89C51 single-chip microcomputer can provide the application scenario of many high performance-price ratios, can flexible Application in various control field.
As shown in Figure 2, pyroelectric infrared sensor 1 front end is provided with Fresnel Lenses 2, as shown in Figure 3, its operating circuit principle: utilize C1 and R2 to carry out stable operating voltage at VCC power end, same output terminal has also added voltage stabilizing element stabilization signal to the circuit diagram of pyroelectric infrared sensor.When human mobile signal being detected, charge signal, after field effect transistor FET amplifies, makes output become noble potential after the voltage stabilizing of C2, R1, then through the conversion of triode Q2, output OUT is low level; When in the infrared ray of human body radiation to be focused on pyroelectric infrared sensor detection unit by Fresnel Lenses, sensor in circuit is by output voltage signal, then the bandpass filter that this signal is made up of C1, C2, R1, R2 by is made, the upper cut-off frequency of this wave filter is 16Hz, and lower-cut-off frequency is 0.16Hz.Due to the detectable signal voltage very faint (usually only having about 1mV) that pyroelectric infrared sensor exports, and be the signal of a change, the effect of Fresnel Lenses simultaneously makes again output signal voltage be that (frequency of pulse voltage is determined by the translational speed of testee impulse form, be generally about 0.1-10Hz), so the voltage signal that reply heat releases infrared sensor output amplifies, the utility model uses integrated operational amplifier LM324 to carry out two-stage amplification, obtains enough gains to make it; As shown in Figure 4, Vi is the voltage signal that input voltage signal instant heating releases infrared sensor output to amplifying circuit, through triode Q 2the voltage signal Vo of amplification is exported after operation amplifier.This pyroelectric infrared sensor and amplifying circuit match, and signal can be amplified more than 70 decibels, so just can measure the action of people within the scope of 10-20 rice.
Be illustrated in figure 5 reset circuit, when this reset circuit uses crystal oscillator frequency for 12MHz, then the reset signal duration should be not less than 2us, and this reset circuit connects the RESET pin of AT89C51 single-chip microcomputer.
Be illustrated in figure 6 light emitting diode warning circuit, connect the pin of the RXD of AT89C51 monolithic after connecting resistance by 4 light emitting diodes, external VCC, after the RXD pin of single-chip microcomputer is set to low level, light emitting diode is lit, and plays alarm function; Be illustrated in figure 7 audible alarm circuit, receive on the P2.0 pin of AT89C51 single-chip microcomputer with a Speaker and triode, resistance, form audible alarm circuit, low level triggers.
When the utility model uses, after AT89C51 microprocessor detect to release the pulse signal that point sensor sends here to external heat, indicate that people swarms into monitored space, thus after the process of AT89C51 single-chip microcomputer, light emitting diode warning circuit and sound warning circuit is driven to start to report to the police, automatic stop alarm after warning continued for 10 seconds, demonstrate alarm times so that people's inquiry simultaneously, then periodic duty is started, detect and whether also have next trigger pip, wait for and report to the police thus make alarm enter continuous duty.Meanwhile, utilize interrupt mode can realize reporting to the police the duration not by 10 seconds time, the effect of sound and light alarm that stops of button by hand.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion made according to the technical solution of the utility model, all falls within protection domain of the present utility model.

Claims (4)

1. one kind based on Single-chip Controlling IR alarm system, it is characterized in that, comprise power supply, processor, pyroelectric infrared sensor, amplifying circuit, light emitting diode warning circuit, audible alarm circuit and reset circuit, described power supply is system power supply, the signal output part of pyroelectric infrared sensor connects the signal input part of amplifying circuit, a signal input part of the signal output part connection handling device of amplifying circuit, another signal input part of described reset-circuit signal output terminal connection handling device; The signal input part of a signal output part connecting luminous diode warning circuit of described processor, another signal output part of processor connects the signal input part of audible alarm circuit.
2. according to claim 1 based on Single-chip Controlling IR alarm system, it is characterized in that: described processor is AT89C51 single-chip microcomputer.
3. according to claim 1 based on Single-chip Controlling IR alarm system, it is characterized in that: described pyroelectric infrared sensor front end is provided with Fresnel Lenses.
4. according to claim 1 based on Single-chip Controlling IR alarm system, it is characterized in that: described amplifying circuit is integrated operational amplifier LM324.
CN201420789202.4U 2014-12-15 2014-12-15 A kind of based on Single-chip Controlling IR alarm system Expired - Fee Related CN204288407U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420789202.4U CN204288407U (en) 2014-12-15 2014-12-15 A kind of based on Single-chip Controlling IR alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420789202.4U CN204288407U (en) 2014-12-15 2014-12-15 A kind of based on Single-chip Controlling IR alarm system

Publications (1)

Publication Number Publication Date
CN204288407U true CN204288407U (en) 2015-04-22

Family

ID=52871544

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420789202.4U Expired - Fee Related CN204288407U (en) 2014-12-15 2014-12-15 A kind of based on Single-chip Controlling IR alarm system

Country Status (1)

Country Link
CN (1) CN204288407U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106530562A (en) * 2016-11-08 2017-03-22 骆香山 Infrared anti-theft system based on single-chip microcomputer
CN107545686A (en) * 2016-06-29 2018-01-05 张旭 A kind of design based on monolithic processor controlled IR intrusion detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107545686A (en) * 2016-06-29 2018-01-05 张旭 A kind of design based on monolithic processor controlled IR intrusion detector
CN106530562A (en) * 2016-11-08 2017-03-22 骆香山 Infrared anti-theft system based on single-chip microcomputer

Similar Documents

Publication Publication Date Title
CN202306741U (en) Domestic anti-theft warning device
CN203644168U (en) GSM-based household robot alarm system
CN104464145A (en) Infrared wireless intelligent alarm system
CN204288407U (en) A kind of based on Single-chip Controlling IR alarm system
CN204480457U (en) A kind of Internet of Things warning system
CN205177073U (en) Based on thing networking fire prevention theftproof alarm system
CN104036609A (en) Domestic burglar alarm
CN104574784A (en) Intelligent home security system
CN204926376U (en) Simulation camera with theftproof function
CN202720742U (en) Family voice antitheft alarm system
CN204155386U (en) A kind of building safety intelligent monitor system
CN202534088U (en) Intelligent infrared anti-theft alarm device
CN202929779U (en) Household antitheft alarm system
CN202736214U (en) Household voice antitheft alarm system based on special-purpose processing chip for infrared sensing signal
CN208141550U (en) A kind of intelligent housing district anti-theft device
CN103854403A (en) Novel anti-theft early warning device
CN203055068U (en) Antitheft precaution device
CN101458860A (en) Warning method
CN203102518U (en) Warehouse fireproof antitheft alarm device
CN205384702U (en) Infrared long -range anti -theft control system of intelligence house
CN201402496Y (en) Vibration and infrared combined anti-theft alarm device
CN106327761A (en) Infrared sensing alarm system
CN204303108U (en) A kind of induction type remote alarms circuit
CN203133589U (en) Early warning controller used for wireless smart home
CN205334659U (en) Infrared alarm based on AT89C51 singlechip

Legal Events

Date Code Title Description
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150422

Termination date: 20151215

EXPY Termination of patent right or utility model