A method and system for judging abnormal power-off of ECU
An abnormality and judging unit technology, applied in the field of judging abnormal power-off of ECU, can solve problems such as data cannot be stored normally, cannot effectively avoid abnormal power-off, and is difficult to know abnormal power-off, etc., so as to avoid the occurrence of abnormal power-off. Effect
Active Publication Date: 2021-05-18
WEICHAI POWER CO LTD
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Problems solved by technology
When the ECU is running, it needs to be powered off normally to store some important data, such as time and mileage. It is difficult to know the specific reasons for abnormal power off, and it is impossible to effectively avoid abnormal power off
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[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0029] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0030] As described in the background technology, when the ECU is running, it needs to be powered off normally to store some important data, such as time, mileage, etc. T15) After power off, when the ECU has not been powered off, the total power of the ECU is directly cut off, resulting in the failure of normal...
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The invention provides a method and system for judging abnormal power-off of an ECU. After the ECU is powered on, the times of power-on, power-off and complete power-off are recorded to determine whether the number of power-offs is the same as the number of complete power-offs. When the number of power-offs is the same as the number of complete power-offs, judge whether the number of power-offs after this power-on operation has increased compared with the number of power-offs before this power-on operation. If it increases, it means that there is no abnormal power-off. Abnormal power-off occurs during the power-on process. The abnormal power-off at this time is the total power-off of the ECU during the power-on process. In the case of power-off for the first time, if there are multiple power-on or power-off, it means that there is no abnormal power-off. State, according to the state of the engine to get the specific fault situation of abnormal power off.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and system for judging that an ECU is powered off abnormally. Background technique [0002] As one of the core components of electronically controlled engines, ECU (Electronic control unit) stores different control program codes and various types of data, and is increasingly prominent in the use of various electronic control technologies for engines. When the ECU is running, it needs to be powered off normally to store some important data, such as time and mileage. It is difficult to know the specific reason for abnormal power off, and it is impossible to effectively avoid abnormal power off. Contents of the invention [0003] In view of this, the object of the present invention is to provide a method and system for judging abnormal power-off of an ECU, which can know the specific fault and its cause, and effectively avoid the situation of abnormal power-off. [...
Claims
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IPC IPC(8): G05B23/02
CPCG05B23/0221
Inventor 秦涛孙明峰许帅辛英
Owner WEICHAI POWER CO LTD