CN203606914U

CN203606914U - Infrared alarm based on single-chip microcomputer

Info

Publication number: CN203606914U
Application number: CN201320685948.6U
Authority: CN
Inventors: 刘伟波; 高坤; 车红军
Original assignee: Binzhou University
Current assignee: Binzhou University
Priority date: 2013-10-31
Filing date: 2013-10-31
Publication date: 2014-05-21
Anticipated expiration: 2023-10-31

Abstract

The utility model discloses an infrared alarm based on a single-chip microcomputer, comprising a single-chip microcomputer system, a power circuit module, a clock circuit module, a reset circuit module, a pyroelectric infrared detection module, a sound-light alarm module, and a GSM alarm module. The alarm uses the single-chip microcomputer as a core of an operating processor, and a pyroelectric infrared sensor is externally connected. An infrared probe disposed on a monitoring point converts detected human body radiated infrared spectrum to electric signals, and the signals are finally input into the single-chip microcomputer through an amplification circuit. Through software query, recognition, and determination, and other steps, the alarm gives out intruder alarm state control signals in real time, so as to drive a sound-light alarm circuit and the GSM module to give out alarm. The design is advantaged by low cost and good detection effect, and has wide market prospect.

Description

A kind of SCM Based Infrared intrusion detector

Technical field

The utility model relates to a kind of non-contact type wireless alarm, and specifically a kind of SCM Based Infrared intrusion detector, belongs to safety device technical field.

Background technology

Current, along with the industrialized fast development of China, be all faced with very large pressure for management and the antitheft problem in warehouse, traditional guard against theft and alarm system cannot meet the demand in market.Alarm on the market mainly contains pressure activated formula burglar alarm, pressure shading triggering type anti-theft alarming device and switch electronic burglar alarm etc., but more or less all exists the shortcoming that reliability and accuracy are not high.If pressure activated formula burglar alarm is because pressure plare need be arranged in mat, so in the time that main frame quits work, be easy to cause wrong report and lose report; Switch type anti-burglar alarm only has a fixed point conventionally, and effective range is smaller, and the also easily damage of various switch, and wrong report and failure prediction ratio are also higher; Light shading type triggers burglar alarm in the too much interference that is subject to solar light irradiation, and reliability is not high yet.Along with the widespread use of embedded system technology, SCM Based burglar alarm technology will be Main Trends of The Development in following a period of time.

Summary of the invention

The purpose of this utility model is to provide a kind of SCM Based Infrared intrusion detector.This utility model can realize the wireless quick transmission of alerting signal, can directly warning message be sent on customer mobile phone terminal simultaneously, and convenient and alarm, has good promotional value.

The utility model adopts following technical scheme to realize goal of the invention:

A kind of SCM Based Infrared intrusion detector, comprises Single Chip Microcomputer (SCM) system, power circuit module, clock circuit module, reset circuit module, rpyroelectric infrared detection module, sound light alarming circuit module and GSM alarm module.Described Infrared intrusion detector is take single-chip microcomputer as job processor core, external pyroelectric infrared sensor.The infrared probe being arranged on monitoring point converts electric signal to the human body radiation infrared spectrum detecting, and finally inputs in single-chip microcomputer through amplifying circuit.Send in real time intrusion alarm state control signal through links such as software inquiry, identification judgements, drive sound light alarming circuit and gsm module to start to report to the police.

Described SCM Based Infrared intrusion detector, described Single Chip Microcomputer (SCM) system is AT89S51 single-chip microcomputer.

Described SCM Based Infrared intrusion detector, the signal processing circuit of described rpyroelectric infrared detection module adopts BIS0001 integrated circuit to process processing to output signal.Detect distance and scope for increasing, need to install Fresnel Lenses before detection module.

Described SCM Based Infrared intrusion detector, described sound light alarming circuit module connects single-chip microcomputer P1.1 interface and a SPEAKER hummer by LED alarm lamp and connects single-chip microcomputer P1.0 interface and form, and by LED alarm lamp, luminous and hummer sends alarm sound and jointly reaches purpose of design.

Described SCM Based Infrared intrusion detector, described GSM alarm module is TC35GSM module.

The beneficial effects of the utility model are: (1) adopt pyroelectric infrared sensor make simple, easy for installation, cost is low, theftproof performance is stable, the signal that it is exported is easy to process, and is convenient to communicate by letter with PC after Single Chip Microcomputer (SCM) system is processed; (2) the TC35 type gsm module itself adopting is with RS232 communication port, can be connected with PC with single-chip microcomputer easily, can realize the wireless quick transmission of alerting signal, can directly warning message be sent on customer mobile phone terminal, convenient and alarm simultaneously.(3) processor adopting 51 series monolithic AT89S51, whole system is all to work under the control of system software.The alarm of adopting design in this way has advantages of that cost is cheap and Effect on Detecting is good, has wide market outlook.

Accompanying drawing explanation

Fig. 1 is system construction drawing of the present utility model.

Fig. 2 is power circuit module map of the present utility model.

Fig. 3 is rpyroelectric infrared testing circuit module map of the present utility model.

Fig. 4 is pyroelectricity testing circuit work block diagram of the present utility model.

Fig. 5 is clock circuit module map of the present utility model.

Fig. 6 is reset circuit module map of the present utility model.

Fig. 7 is sound light alarming circuit module map of the present utility model.

Fig. 8 is GSM alarm module testing circuit figure of the present utility model.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in further detail.

Referring to Fig. 1, a kind of SCM Based Infrared intrusion detector, system architecture comprises Single Chip Microcomputer (SCM) system, power circuit module, clock circuit module, reset circuit module, rpyroelectric infrared detection module, sound light alarming circuit module and GSM alarm module.

Referring to Fig. 2, described power circuit module turns 12V transformer by 220V 220V alternating current is carried out to step-down, through bridge rectifier D 1 rectification, electrochemical capacitor C1 filtering, three terminal regulator 7805 voltage stabilizings, improve by capacitor C 2 that stabilized power source fluctuation finally obtains that design needs+5V stable dc power supply.Wherein 7805 VI pin can be accepted the voltage of 8～25V, and VO pin can be stablized output 5V voltage, needs only input voltage within the scope of 8～25V, and 7805 can both provide constant 5V voltage for Single Chip Microcomputer (SCM) system.

Referring to Fig. 3 and Fig. 4, described rpyroelectric infrared testing circuit workflow is: before pyroelectric infrared sensor, set up Fresnel Lenses, to increase distance and the scope of detecting, improve receiving sensitivity.The infrared ray that human body radiation goes out, after Fresnel Lenses, enters rpyroelectric infrared testing circuit.And be converted into electric signal.This output electrical signals is fainter and change slowly, after connect BIS0001 integrated circuit output signal processed to processing, make it convert single-chip microcomputer easy to handle digital signal to.BIS0001 integrated circuit amplifies the signal of sensor by amplifier, and what make by comparer etc. that signal can be more stable outputs in single-chip microcomputer.

Referring to Fig. 5, described clock circuit module is mainly single-chip microcomputer machine oscillation period is provided.Machine cycle one has 12 oscillation period, and external quartz oscillator oscillation frequency is 12MHZ, therefore the machine cycle of this Single Chip Microcomputer (SCM) system is 1us.

Referring to Fig. 6, described reset circuit module adopts outside manually button reset circuit.Switch is not in the time pressing, and DC voltage+5V cannot be added on the RST port of single-chip microcomputer, and system can not carried out reset operation; In the time that switch continues to press, supply voltage can directly be added to reseting port, and after 2 machine cycles are 2us, system automatically resets, after trip switch, and normally operation after system initialization.

Referring to Fig. 7, described sound light alarming circuit module is connect single-chip microcomputer P1.1 interface and SPEAKER hummer and is received the P1.0 interface of single-chip microcomputer by LED alarm lamp, in the time that infrared sensor detects that someone invades, will automatically make hummer send alarm sound by interrupt routine, LED can not stop flicker with warning invader simultaneously.After system initialization, circuit is in steady state (SS), and voltage does not change substantially, and red light is in normal bright state; Hummer is in closed condition; When pressing after the switch of simulation interruption signal, single-chip microcomputer can start interrupt routine, makes controlling alarm port approach microcontroller power supply voltage+5V, buzzer circuit conducting, and warning circuit can send police whistle sound by amenable to process, and red light does not stop flicker simultaneously.

Referring to Fig. 8, described GSM alarm module is TC35GSM module.This module carries RS232 port, by designing a TTL RS 232 level circuit, is connected to the UART mouth of AT89S51, and the other end is directly connected to TC35, so just can be connected with single-chip microcomputer.Serial port module is made up of a MAX232 chip and a COMPIM serial ports end, and COMPIM port is responsible for being connected with GSM, and MAX232 is responsible for being connected with single-chip microcomputer.Transmit information by singlechip serial communication port to TC35GSM module, single-chip microcomputer is controlled mobile phone by AT instruction, makes its work.

According to above description, the principle of work of described Infrared intrusion detector and flow process are: take AT89S51 single-chip microcomputer as job processor core, and external pyroelectric infrared sensor.The infrared probe being arranged on monitoring point converts electric signal to the human body radiation infrared spectrum detecting, and finally inputs in single-chip microcomputer through amplifying circuit.Send in real time intrusion alarm state control signal through links such as software inquiry, identification judgements, drive sound light alarming circuit and gsm module to start to report to the police.

Claims

1. a SCM Based Infrared intrusion detector, is characterized in that: comprise Single Chip Microcomputer (SCM) system, power circuit module, clock circuit module, reset circuit module, rpyroelectric infrared detection module, sound light alarming circuit module and GSM alarm module.

2. the SCM Based Infrared intrusion detector of one according to claim 1, is characterized in that: described Single Chip Microcomputer (SCM) system is AT89S51 single-chip microcomputer.

3. the SCM Based Infrared intrusion detector of one according to claim 1, it is characterized in that: described rpyroelectric infrared detection module, signal processing circuit adopts BIS0001 integrated circuit to process processing to the output signal of rpyroelectric infrared detection module.

4. according to the SCM Based Infrared intrusion detector of one described in claim 1 and claim 3, it is characterized in that: the Fresnel Lenses of installing above of described rpyroelectric infrared detection module detects distance and scope with increase.

5. the SCM Based Infrared intrusion detector of one according to claim 1, it is characterized in that: described sound light alarming circuit module connects single-chip microcomputer P1.1 interface and a SPEAKER hummer by LED alarm lamp and connects single-chip microcomputer P1.0 interface and form, by LED alarm lamp, luminous and hummer sends alarm sound and jointly reaches purpose of design.

6. the SCM Based Infrared intrusion detector of one according to claim 1, is characterized in that: described GSM alarm module is TC35GSM module.