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Data processing method suitable for automobile instrument

A technology of automobile instrumentation and processing method, which is applied in the direction of electrical digital data processing, redundancy in calculation, data error detection, instrumentation, etc., can solve the problems of high cost, data loss, difficult data synchronization between automobile and cloud, etc. low cost effect

Inactive Publication Date: 2018-05-25
大陆汽车车身电子系统(芜湖)有限公司
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Problems solved by technology

[0003] However, in the above-mentioned several processing methods: 1) Due to the restriction of the service life of EEPROM (that is, the number of writes), complex update strategies have to be used to protect the EEPROM to prolong the service life as much as possible; Once the system is reset, the data in the RAM area will be lost due to system initialization; 3) Due to the high dependence on the mobile Internet, in remote areas due to poor network signals, it is difficult to synchronize data between the car and the cloud, and higher cost

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[0013] According to one embodiment of the present invention, it includes:

[0014] When the vehicle meter is running normally, the data to be protected is backed up to the corresponding storage area in the backup area of ​​the RAM memory of the car meter according to its module to form backup data, and the backup area is not initialized except for power-on reset operate;

[0015] When the system reset operation is triggered, the type of the reset operation is detected, and before the system runs, the backup data in the backup area is used to recover the data of the corresponding module when the power-on reset is not performed.

[0016] The backup and data recovery of the present invention will be further described with examples below in conjunction with the accompanying drawings. refer to figure 1 As shown, taking an automobile instrument with a liquid crystal display as an example, the automobile instrument includes an instrument controller, a RAM memory and a display termi...

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Abstract

The invention discloses a data processing method suitable for an automobile instrument. The method comprises: when the automobile instrument is normally run, respectively backing up various type of data, which need to be protected, into corresponding storage areas in a backup region of an RAM of the automobile instrument to form backup data, wherein no initialization operation is carried out on the backup region except for power-on resetting; and when an instrument system resetting operation is triggered, detecting the type of the resetting operation, and when the resetting operation is not power-on resetting, carrying out data recovery on corresponding modules by the backup data in the backup region before an instrument system is run. The method is based on the fact that the RAM does nothave limitation on writing frequency, and does also not need design of a complicated updating strategy; and does also not need data synchronization with the help of a cloud perform, and is also lowerin costs. In addition, through setting on the backup region, important data stored in the backup region are enabled to not be lost due to system initialization in system resetting operations other than a power-on resetting operation, and requirements for user experience are also satisfied.

Description

technical field [0001] The invention relates to a data processing technology of an automobile instrument, in particular to a data processing method suitable for an automobile instrument. Background technique [0002] The current car instrument may trigger the system reset operation due to various reasons during the operation process. In order not to affect the user experience, it is necessary for the user to find that the state of the instrument is basically the same after the system is restored. Therefore, important data on the vehicle needs to be processed to meet this requirement. At present, the important data on the car is mainly processed in the following ways: 1) saving important data to EEPROM; 2) directly storing important data in operation in the RAM area; 3) using the mobile Internet to synchronize important data to the cloud. [0003] However, in the above-mentioned several processing methods: 1) Due to the restriction of the service life of EEPROM (that is, the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1446
Inventor 朱振才许劲庞宏宇陈家祖
Owner 大陆汽车车身电子系统(芜湖)有限公司
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