CN203093993U - Text message antitheft device for automobiles - Google Patents

Abstract

The utility model discloses a short message anti-theft device for automobiles, which includes a mobile phone of a car owner and a GSM network. The device also includes a single-chip microcomputer, a communication module, a sensor, an alarm device and a relay, wherein the communication module is connected with the single-chip computer, and the sensor is connected with the input end of the single-chip computer. The alarm device and the relay are connected with the output end of the single chip microcomputer, and the mobile phone of the car owner is connected with the communication module through the GSM wireless network. Described single-chip microcomputer adopts XA-H3 single-chip microcomputer. The communication module adopts M22 GSM/GPRS wireless module. The sensing unit includes a sensor, a filter circuit, an amplifying circuit, a bidirectional comparator and a photoelectric coupler, and the sensor uses a SV805 vibration sensor. The short message anti-theft device for automobiles based on the single-chip microcomputer of the utility model can be widely used in anti-theft and monitoring and alarming of various types of automobiles, and can enable the owner to remotely control the automobile, and the operation method is simple and convenient.

Description

An anti-theft device for automobile SMS

technical field

The utility model relates to an automobile short message anti-theft device, in particular to an automobile short message anti-theft device.

Background technique

With the continuous improvement of people's living standards, cars are becoming more and more popular. How the car is anti-theft has also become more and more a problem that people care about. In order to prevent the car from being stolen, various anti-theft devices have come out and been widely used. With the development of automotive electronic technology, it is of great practical significance to design and develop an intelligent car anti-theft alarm system. The car alarm system introduced in this design uses sensors to detect the car body. When the car body encounters abnormal conditions, the single-chip microcomputer starts the alarm device, and uses the M22 module to send short messages to the car owner's mobile phone, so that it can play a very good role in anti-theft alarm.

Contents of the invention

The purpose of the utility model is to provide a car short message anti-theft device based on a single-chip microcomputer that can send alarm information to the car owner in time.

In order to achieve the above tasks, the utility model adopts the following technical solutions to achieve:

A short message anti-theft device for a car, comprising a car owner's mobile phone and a GSM network, the device also includes a single-chip microcomputer, a communication module, a sensor, an alarm device and a relay, wherein the communication module is connected with the single-chip microcomputer, the sensor is connected with the input end of the single-chip computer, the alarm device and the relay are connected with the The output end of the single-chip microcomputer is connected, and the mobile phone of the car owner is connected with the communication module through the GSM wireless network.

The utility model also has other technical characteristics:

Described single-chip microcomputer adopts XA-H3 single-chip microcomputer.

The communication module adopts M22GSM/GPRS wireless module.

The sensing unit includes a sensor, a filter circuit, an amplifying circuit, a bidirectional comparator and a photocoupler, and the sensor uses a SV805 vibration sensor.

The short message anti-theft device for automobiles based on the single-chip microcomputer of the utility model can be widely used in anti-theft and monitoring and alarming of various types of automobiles, and can enable the owner to remotely control the automobile, and the operation method is simple and convenient.

Description of drawings

Fig. 1 is a schematic diagram of the connection relationship of the present invention.

Fig. 2 is a schematic diagram of the signal transmission process of the alarm unit of the present invention.

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

Detailed ways

The specific embodiments of the present utility model are provided below, and it should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solution of the application all fall into the protection scope of the present utility model.

Comply with above-mentioned technical scheme, as shown in Figure 1, a kind of car short message anti-theft device, comprises car owner's mobile phone and GSM network, and this device also comprises single-chip microcomputer, communication module, sensing unit, alarm device and relay, wherein communication module links to each other with single-chip microcomputer, The sensing unit is connected with the input end of the single-chip microcomputer, the alarm device and the relay are connected with the output end of the single-chip microcomputer, and the owner's mobile phone is connected with the communication module through the GSM wireless network. The sensing unit includes a sensor, a filter circuit, an amplifying circuit, a bidirectional comparator and a photocoupler, and the sensor uses a SV805 vibration sensor.

Described single-chip microcomputer adopts XA-H3 single-chip microcomputer. XA-H3 is a high-performance 16-bit microprocessor with 24-bit address space (16M bytes), 16-bit stack pointer and general-purpose registers, and provides 16-bit and 18-bit address buses. Asynchronous serial interface with 4 embedded DMA drivers. The serial communication resource of XA-H3 has 4 independent, high-speed, two-way UARTs.

The communication module adopts the M22 GSM/GPRS wireless module, and the M22 GSM/GPRS wireless module can provide wireless communication solutions for any products that require voice communication and data transmission requirements through the GSM network.

The sensing unit includes a sensor, a filter circuit, an amplifying circuit, a bidirectional comparator and a photoelectric coupler, and the sensor uses a SV805 vibration sensor. When the hand brake, foot brake and car body of the car body are abnormal, the sensor will generate an electrical signal after being detected by the sensor, and the signal will be sent to the bidirectional comparator after filtering and amplifying. The threshold level of the sensor is compared, and a pulse signal output is generated. In order to distinguish the signals detected by several different sensors, the signal passes through a photocoupler before being sent to the microcontroller. The initial state is low. When an abnormality occurs, the signal of this channel will have a high level through the photocoupler, and then send the high level as a warning signal to the microcontroller. The signal transmission process of the alarm unit is shown in Figure 2.

When the utility model is in working condition, the sensing unit is installed on the hand brake, foot brake and car body of the automobile, and the sensor of the sensing unit detects the situation at the above position. When the number of high-level signals received within the set time of the single-chip microcomputer reaches the number set by the single-chip microcomputer, the single-chip microcomputer outputs a high-level signal to the alarm device, and the alarm device is activated. A warning, at the same time, the microcontroller outputs a high-level signal to the communication module, the communication module sends a preset text message, and sends it to the car owner's mobile phone through the operator's GSM network, and the car owner's mobile phone edits and sends a preset text message after receiving the text message. The short message is sent to the communication module through the GSM network. After the communication module receives the short message, it outputs a high level to the single-chip microcomputer. After the single-chip microcomputer receives the high-level signal, it outputs a high level to the relay. The relay cuts off the power supply of the car and prohibits the car from starting. When the number of high-level signals received within the set time of the single-chip microcomputer is less than the number set by the single-chip microcomputer, the counter of the single-chip microcomputer is cleared, and the number of high-level signals within the set time is re-counted, which can effectively avoid Alarm error. Through the above process, the anti-theft of the vehicle can be well prevented and alarmed.

Claims (4)

1. automobile note anti-joyride device, comprise car owner's mobile phone, it is characterized in that, this device also comprises micro controller system, communication module, sensor, warning device and relay, wherein communication module links to each other with micro controller system, the input end of sensor and micro controller system links to each other, and warning device links to each other with the mouth of micro controller system with relay, and car owner's mobile phone links to each other by gsm wireless Networks and Communications module.

2. automobile note anti-joyride device according to claim 1 is characterized in that, described micro controller system adopts the XA-H3 micro controller system.

3. automobile note anti-joyride device according to claim 1 is characterized in that, described communication module adopts M22 GSM/GPRS wireless module.

4. automobile note anti-joyride device according to claim 1 is characterized in that, described sensing unit comprises sensor, filter circuit, the two-way comparator of amplifying circuit and photoelectrical coupler, and described sensor adopts the SV805 vibration sensor.

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