Combined instrument replacement-preventing system and detection method thereof and coding password configuration method

A combination instrument and coding method technology, applied in the direction of measuring devices, anti-theft vehicle accessories, instruments, etc., can solve the problems of harming the interests of OEMs and unfavorable vehicle use safety, so as to reduce customer complaints, avoid losses, and increase safety Effect

Active Publication Date: 2010-06-30
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

With the rapid development of the automobile industry and the continuous increase of individual users, it often happens that some users replace the meters or use two or more meters in turn to obtain More maintenance will inevitably damage the interests of the OEM, and it is also not conducive to the safety of the vehicle

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  • Combined instrument replacement-preventing system and detection method thereof and coding password configuration method
  • Combined instrument replacement-preventing system and detection method thereof and coding password configuration method
  • Combined instrument replacement-preventing system and detection method thereof and coding password configuration method

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Embodiment Construction

[0025] The present invention will be specifically described below in conjunction with the accompanying drawings.

[0026] The system of the present invention includes: a combination meter, an anti-theft controller and an engine control unit, and an anti-theft chip is provided in the combination meter, and the security of the system is guaranteed through multi-level password verification among the three.

[0027] The combination meter has the following codes inside: manufacturer code, serial number, synchronous counter, identification code, jump code and fixed code. The relationship between these codes and their generation are as follows: figure 2 shown. The manufacturer's code is a code determined by the manufacturer itself. As the identification of different suppliers' products, different manufacturers have different manufacturer's codes. The manufacturer's code of the combination instrument must be the same as that of the receiving decoder. The synchronous counter is used ...

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Abstract

The invention discloses a combined instrument replacement-preventing system and a detection method thereof and a coding password configuration method, wherein the combined instrument replacement-preventing system comprises a combined instrument and a theftproof controller; a theftproof chip is arranged in the combined instrument which can generate a coding password through a manufacturer code of 64bit and a sequence number of 28bit by using a code-hopping and encoding mode, so that the code transmitted by the combined instrument is unique and unrepeated. Compared with self-replaceable instrument, the system can effectively save the maintenance expenses of a mainframe factory and effectively avoid the damage to other functions of a finished vehicle caused by replacing the instrument by a vehicle owner (a non-professional).

Description

technical field [0001] The invention relates to the field of automobile combination instrument configuration, especially after the combination instrument breaks down, it prevents customers from replacing it through abnormal channels, or reduces the driving mileage by replacing the instrument in order to obtain free maintenance. Background technique [0002] With the development of automobile technology, people have higher and higher requirements for vehicle safety and comfort. At the same time, in order to better promote their products and good after-sales service, OEMs have defined the three-guarantee mileage , such as 30,000 / 50,000 kilometers, etc., and defines the scope and time of guarantee accordingly. With the rapid development of the automobile industry and the increasing number of individual users, it often happens that some users replace the meters or use two or more meters in turn to obtain More maintenance will inevitably damage the interests of the OEM, and it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K35/00B60R25/00G01M19/00B60R25/34G01M99/00
Inventor 张强邓华杨晓梅
Owner CHERY AUTOMOBILE CO LTD
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