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Automotive anti-theft system applying FM sub-carrier radio data system and difference correcting satellite positioning system

A differential global positioning and global positioning system technology, applied in satellite radio beacon positioning system, radio wave measurement system, anti-theft vehicle accessories, etc.

Inactive Publication Date: 2002-07-10
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above two inventions, the combination of FM subcarrier broadcasting and differential global positioning system is not specifically applied to car anti-theft, especially the specific implementation steps of car anti-theft.

Method used

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  • Automotive anti-theft system applying FM sub-carrier radio data system and difference correcting satellite positioning system
  • Automotive anti-theft system applying FM sub-carrier radio data system and difference correcting satellite positioning system
  • Automotive anti-theft system applying FM sub-carrier radio data system and difference correcting satellite positioning system

Examples

Experimental program
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Effect test

Embodiment Construction

[0038] The present invention is described in detail below in conjunction with embodiment.

[0039] figure 1 It is a block diagram of a traditional car alarm. When the sensor A6 of the traditional car anti-theft device is triggered by the outside world (body vibration or windows are broken), it sends a signal to the microprocessor A1, and the microprocessor A1 uses the basic data stored in the memory A2 to compare with the real-time data to determine whether the car is Stolen to judge, whether to need to cut off the car power supply or send an alarm. To cut off the power supply of the car or send an alarm, an instruction is sent to the control circuit A3 to control the power supply controller A5 to cut off the power supply of the car or start the alarm A4.

[0040] figure 2 It is the spectrum characteristic curve of the modulated signal of the car anti-theft system using the FM subcarrier radio data system and the differential global positioning system of the present invent...

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PUM

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Abstract

An antitheft device for car features the frequency-modulated subcarrier is used to transmit data signals and the differential correction satellite positioning technique is used. The information about the car that has been stolen is transmitted in frequency modulated subcrarrier by the computer at the transmitting end. At the receiving end in the stolen car, the information is received, decoded and processed by microprocessor to judge and excute the actions including turn-off of power supply and start of alarm. The position of the car can be calculated out by satellite positioning technique and transmitted to police stations after encoded and modulated.

Description

technical field [0001] The invention relates to an automobile anti-theft system using FM subcarrier radio data system (Radio Data System for short RDS) and differential global positioning system (Differential Global Positioning System for short DGPS), which is composed of a car anti-theft center and a vehicle anti-theft unit. The car anti-theft system can be used to remotely track and remotely control the car anti-theft unit, determine the precise position of the car, and automatically report the precise position of the car to the car anti-theft center through radio frequency (RF) communication. Background technique [0002] The sensor of the traditional car anti-theft device is stimulated by the outside (body vibration or the window is broken), it will cut off the car power supply or start the alarm, and there is no way to determine the precise position of the car, and it is impossible to remotely track and control the car anti-theft device. It can only be controlled by a r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R25/045B60R25/102B60R25/33G01S19/16G01S19/42
Inventor 何台生吴念祖陈龙德
Owner IND TECH RES INST