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Automobile total mileage storage method

A technology for total mileage and automobiles, applied in the field of storage, which can solve problems such as failure to record data mileage information, loss of mileage information, etc.

Active Publication Date: 2011-05-04
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the vehicle mileage changes, the data is still written at the problematic address, resulting in the failure to record the mileage information of some data, and the mileage information is lost after the power is turned on again.

Method used

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  • Automobile total mileage storage method
  • Automobile total mileage storage method

Examples

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the present invention is further described:

[0015] see figure 1 , a kind of storage method of automobile total mileage according to the present invention, its steps are as follows:

[0016] When the program runs to the "data storage function", the first step is to judge whether there is a "memory fault"-1;

[0017] If there is a fault in the memory, the display module will directly "display the mileage error" - 2, and no longer perform the data storage function;

[0018] If there is no fault in the memory, it is judged whether a "storage error" occurred in the last storage - 3;

[0019] If there is no storage error, judge whether the total mileage of the current data has "mileage change" - 5;

[0020] If there is no mileage change, no data storage is performed;

[0021] If the mileage changes, firstly "read the previous successfully stored data address", based on this address, "clear the number of address update err...

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Abstract

The invention discloses an automobile total mileage storage method. The method comprises the following steps of: detecting whether a memory fails or not after a program runs to a data storage function, namely reading the previous successfully stored data address if an total mileage number changes in the state that the memory does not fail and does not have storage errors during program running; if the data is stored for the first time, storing the data in a memory origin address; updating a data address, resetting the number of errors and writing the current total mileage; and if unsuccessful writing occurs in the writing process, returning to the data storage function and entering a new storage flow. The method is simple, has high efficiency and is reliable and practicable; and by the method, mileage data loss is avoided, actual mileage data information is provided for a user, and the problem that the total mileage of the entire automobile cannot be accurately recorded when a storage error occurs in a data storage area is solved.

Description

technical field [0001] The invention relates to a storage method, in particular to a storage method for the total mileage of an automobile. Background technique [0002] The total mileage of a car is one of the most important parameters in the life cycle of a car. It represents the current total mileage of the corresponding vehicle, which is a very important reference for the evaluation of the value of the car. At the same time, it provides the driver with important information about the mileage of the vehicle, and provides the most direct basis for vehicle maintenance. In general, the mileage of the car is recorded by the memory. When the change of the mileage is greater than 1Km, it will write data to the internal memory and write the new mileage into the storage area. When the car loses power, it will read the value of the current mileage from the storage area and display it on the corresponding display module. If there is a problem with the data stored in the storage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02G07C5/08
Inventor 谢乐成易纲王晓伟张鹏刘志萌
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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