Alarm device for preventing automobile theft

Abstract

The invention discloses an alarm device for preventing automobile theft. The alarm device comprises a radio frequency (RF) antenna, a radio frequency identification device (RFID) module, a global system for mobile communication (GSM) unit, a global positioning system (GPS) unit, a data processing unit, a control unit, a timing unit, a voice alarm circuit, and an automobile circuit; the signal of the RFID module is received by an antenna and then is sent to the data processing unit, and is converted into a digital signal; the digital signal is sent to the control unit; and the control unit acquires identity data, compares the identification data and stored information, and sends a control signal after the theft prevention state is removed if the identity data is consistent with the stored information to ensure that a first relay and a second relay are actuated, so the automobile can be started normally. When the identity data is not consistent with the stored information or an automobile drives out of the preset range, the circuit is locked and gives an alarm to an owner through a message which carries the position information of the current automobile. The device can also realize the function of warning fatigue driving, so that the safety is improved in all dimensions.

Description

technical field [0001] The invention relates to the field of automobile safety, specifically an alarm device for preventing automobile theft. Background technique [0002] With the rapid development of our country's national economy, the substantial improvement of people's living standards and the continuous advancement of science and technology, more and more people have cars, and what follows is how to protect their cars from being stolen The problem. [0003] At present, the anti-theft devices of automobiles are mainly divided into two types, one is a mechanical anti-theft device, and the other is an electronic anti-theft device. The mechanical anti-theft device mainly relies on locking the clutch, brake, accelerator or steering wheel to achieve the purpose of anti-theft However, the shortcoming of this type of anti-theft device is that it only prevents theft and does not report to the police, and it is troublesome to disassemble. After unlocking, a certain space is need...

AI Technical Summary

Problems solved by technology

[0003] At present, the anti-theft devices of automobiles are mainly divided into two types, one is a mechanical anti-theft device, and the other is an electronic anti-theft device. The mechanical anti-theft device mainly relies on locking the clutch, brake, accelerator or steering wheel to achieve the purpose of anti-theft However, the disadvantage of this type of anti-theft device is that it only prevents theft and does not call the police, and it is troublesome to disassemble.

There are many types of electronic anti-theft devices, and their functions are also various, but basically there are some problems. For example, when false alarms strongly affect the mood of the car owner, the sound of the alarm also disturbs the residents or residents around the vehicle parking area. pedestrian

In addition, the anti-theft device is always in a state of power consumption when it is in standby, which greatly increases the burden on the battery in the car, and the radio signal of the anti-theft device will also be blocked by thieves with special tools or intercepted in the air, resulting in the vehicle being stolen.

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