Anti-theft method and system for automobiles

Abstract

The invention relates to an anti-theft method for automobiles, which comprises the following steps that: a decryption algorithm and a key which are matched with a random sequence code rule generated by an anti-theft key are preset in an engine controller; the anti-theft key is inserted into an ignition lock, generates a random sequence code, calculates according to the decryption algorithm and the key, and sends the random sequence code and a result sequence code; the engine controller receives the random sequence code and the result sequence code and performs unlocking calculation; the anti-theft key is successfully unlocked when an unlocking calculation result is correct; a decryption algorithm and a key which are matched with an owner identity (ID) and an owner ID decryption sequence code are preset in a power assembly controller; the power assembly controller receives the encrypted owner ID and the encrypted owner ID decryption sequence code and performs decoding operation; a braking system is unlocked after the decoding is successful; and a decoding success command is sent to the engine controller. The anti-theft method and an anti-theft system for the automobiles are used for preventing the theft of vehicles and improving the safety of the vehicles.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an automobile anti-theft method and system. Background technique [0002] At present, vehicle anti-theft technology is divided into two categories: mechanical and electronic. [0003] Mechanical anti-theft technology uses a specific mechanical device to lock the steering system of the vehicle, or the fuel supply system and other means to achieve the purpose of anti-theft. This method is relatively direct and simple, but the anti-theft effect is poor. [0004] Electronic anti-theft technology usually adopts electronic key decoding, wireless communication decoding or remote control wireless key to realize anti-theft control by controlling the door, engine start and fuel supply system. This method is more complex than mechanical, and has better anti-theft effect, but a single anti-theft technology will also lose its effect when the key is lost or the password is maliciously stolen. [0...

AI Technical Summary

Problems solved by technology

This method is more complex than the mechanical one, and the anti-theft effect is better, but the single anti-theft technology will also lose its effect in the case of key loss or malicious theft of the password.

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