CN202089024U

CN202089024U - Automobile antitheft alarm system

Info

Publication number: CN202089024U
Application number: CN2010206537544U
Authority: CN
Inventors: 张蕾; 董恩国; 关志伟; 何享贤; 杨乐泉; 何兆华
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2010-12-10
Filing date: 2010-12-10
Publication date: 2011-12-28
Anticipated expiration: 2020-12-10

Abstract

An automobile antitheft system is capable of sending automobile burglary information through GSM network and controlling running and stopping of an automobile through a client (an owner or an alarm center). The automobile antitheft system comprises a data acquisition system, a master control system, a data communication system and an execution system. The data acquisition system is used for acquiring starting information of the automobile through ignition switch signals of an engine and automobile door switch signals; the master control system judges whether the automobile is stolen according to the acquired signals and communicates with a GSM module; the data communication system is used for sending automobile burglary signals to the predetermined client and sending instructions through the client for controlling outage of an engine ignition feedback system and an ECU power supply system of the execution system. The engine can be restarted only after a starting instruction sent by the client is received again. The automobile antitheft alarm system has a simple structure and stable performance, is easy to install, and can be extensively applied to automobiles, such as Toyota series.

Description

Automotive anti-theft alarming system

Technical field:

The utility model is a kind of alarming device for automobile anti-theft, can judge whether vehicle is stolen by the electronic signal of the former car of monitoring, and send the stolen information of vehicle by the GSM network to client, and can control the operation of stolen vehicle by client.

Background technology:

China's automotive theft proof system mainly is divided into three major types at present: traditional remote controller automotive theft proof system, gps satellite location automotive theft proof system, GSM Web vehicle anti-theft system.The utility model belongs to GSM Web vehicle anti-theft system.The GSM Web vehicle anti-theft system of present stage generally need install the input of different warning sensors as alerting signal additional, for example vibration, pressure, super sonic, sensor such as infrared, so the anti-joyride device price is higher, it is complicated to install.And anti-theft system generally is by relay turnoff the fuel circuit or firing circuit after reporting to the police, and antitheft measure of control are with low content of technology, repairs simply and just can recover travelling of vehicle.

Summary of the invention:

The problem that the utility model need solve is, overcome disadvantages of background technology, under the situation that does not install sensor additional, can judge whether vehicle is stolen by original electronic signal on the collection automobile, and pass through client (car owner or alarm center) to automotive anti-theft alarming system transmission instruction note, make vehicle immobilization.

The technical scheme that its technical matters that solves the utility model adopts is: automotive anti-theft alarming system is made up of data acquisition system, master control system, data communication system (DCS) and actuating system.Data acquisition system is carried out processing and amplifying through op amp LM324AN to signal with the mouth of door contact interrupter impulse singla and ignition lock signal, signal after will handling simultaneously further amplifies electric current through not gate, through 555 circuit its binary pair DM74LS73AM is carried out frequency control again, the receiving end that is connected to micro controller system is exported in latching of binary pair; Whether whether unusually the signal that the master control system utilization is gathered judges vehicle starting, promptly stolen, and communicates with gsm module; Data communication system (DCS) is responsible for the stolen information of vehicle is sent to the given client end, and can send instruction by client, the engine ignition feedback signal (main signal) of control actuating system and ECU power-supply system (auxilliary control signal) outage.Have only to receive the starting order that client sends once more, driving engine just can be reset.The beneficial effects of the utility model are: owing to be to gather the original electronic signal of automobile to judge whether vehicle is stolen, so information is obtained accurately, is made things convenient for, cost is low, and when vehicle is stolen, control the outage of engine ignition feedback signal and ECU power-supply system simultaneously, improved the theftproof performance of automobile.Because the engine ignition feedback signal is well-regulated square-wave signal, impassabitity increases the mode of lead and obtains, and just recovers to travel through repairing simply so can prevent vehicle.This apparatus structure is simple, easy for installation, stable performance, can be widely used in the automobile of types such as Toyota sedan system.

Description of drawings:

Fig. 1 is a working process scheme drawing of the present utility model.

Fig. 2 is an ignition lock pulse signal acquisition circuit diagram, 1. the amplifying circuit of ignition lock impulse singla, 2. ignition lock impulse singla shaping circuit, 3. ignition lock pulse duration frequency signal producer, the 4. latch of ignition lock impulse singla.

Fig. 3 is master control system and data communication system (DCS) schematic diagram.1. being to send the gsm module of data portion and the circuit of SIM, 2. is master control little monolithic type computing machine and driving circuit thereof partly, 3. provides+power circuit of 5V, is used to provide the power supply of gsm module and little monolithic type computing machine.

Fig. 4 is the diode circuit of voltage regulation of using in the actuating system.1. 4. be the automobile ECU power control relay, 2. be system protection circuit, 3. is Control of Automobile igniting feedback signal circuit.

Fig. 5 is the control flow chart of master control system.

The specific embodiment:

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is done to describe in further detail.

This automotive anti-theft alarming system is made up of data acquisition system, master control system, data communication system (DCS) and actuating system, as shown in Figure 1.Data acquisition system is carried out processing and amplifying through op amp LM324AN to signal with the mouth of door contact interrupter impulse singla and ignition lock signal, signal after will handling simultaneously further amplifies electric current through not gate, through 555 circuit its binary pair DM74LS73AM is carried out frequency control again, the receiving end that is connected to micro controller system is exported in latching of binary pair, as shown in Figure 2; Master control system, data communication system (DCS) are as shown in Figure 3.Utilize ignition lock signal and the door contact interrupter signal gathered to judge whether unusually starting of vehicle, promptly whether vehicle is stolen, and master control system will be communicated by letter with gsm module by micro controller system with this as trigger condition, sends the stolen information of vehicle with short message mode; Data communication partly is made up of gsm module, antenna, SIM, and its effect is that the stolen information of automobile is sent to the given client end through the GSM network, realizes remote alarms.After client receives the stolen information of vehicle, can send to gsm module with way of short messages with the key of client mobile phone and appointment, after gsm module receives the note of client, utilize the microcomputer series interface communication agreement to intercom mutually with the full duplex communication interface UART of micro controller system.Micro controller system is discerned the phone number and the appointment key of note, if correctly then engine ignition feedback system and ECU power-supply system are forced outage, makes the automobile stagnation of movement, and its controlling schemes as shown in Figure 4.Simultaneously, anti-theft system can send to client with automobile stagnation of movement information.If need reset vehicle; must and specify key that system is carried out recovery operation with client mobile phone; if there are mistake in phone number or key in the short message, anti-theft system will carry out fail safe, prevent that vehicle is subjected to external information and disturbs when cruising.The all control system flow process as shown in Figure 5.

Claims

1. automotive anti-theft alarming system is made up of data acquisition system, master control system, data communication system (DCS) and actuating system, it is characterized in that the mouth of door contact interrupter impulse singla and ignition lock signal is carried out processing and amplifying through op amp LM324AN to signal, signal after will handling simultaneously further amplifies electric current through not gate, through 555 circuit its binary pair DM74LS73AM is carried out frequency control again, the receiving end that is connected to micro controller system is exported in latching of binary pair.

2. according to the described automotive anti-theft alarming system of claim 1, it is characterized in that in actuating system, use zener diode stable ignition feedback signal voltage and ECU power-supply system voltage.