Method for recording accumulated power-on time of circuit board

A technology for accumulating power-on time and accumulating working time. It is used in faulty hardware testing methods, detecting faulty computer hardware, and using power-on tests to detect faulty hardware. It can solve the loss of time update, failure to detect quickly, timing errors, etc. question

Active Publication Date: 2017-05-24
中国兵器装备集团自动化研究所有限公司
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  • Abstract
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Problems solved by technology

[0002] At present, in many devices, in order to obtain the accumulative power-on time of the board more accurately and clearly, various timing methods have been adopted, but these methods have more or less disadvantages in several aspects: when the storage medium for storing the accumulative working time When a bad block occurs, it cannot be detected quickly, which may cause a timing error in a short time. At the same time, if the device is powered off when the board refreshes the timing storage unit, the time update may be lost.

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  • Method for recording accumulated power-on time of circuit board

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Embodiment Construction

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, so as to gain a deeper understanding of the purpose, features and advantages of the present invention (assuming that the accumulated power-on time is updated every minute, and the interface of the storage medium is I2C).

[0019] Divide four storage spaces on the storage medium. When powered on, the CPLD reads the cumulative power-on time 1 of boards stored in the four storage spaces on the storage medium by simulating the I2C interface sequence.

[0020] Compare the four read time values ​​2. Generally, the four time values ​​should be the same, and the value read at this time is the current accumulated power-on time value of the board 5. However, if the system happens to be shut down during the process of writing the time information into the storage space, these four values ​​will not be exactly the same3. Assuming that the cumulative ...

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Abstract

The invention provides a method for recording accumulated power-on time of a circuit board. The method comprises the steps of simulating an interface time sequence of a storage medium by utilizing a CPLD to finish access to a device; accurately recording accumulated power-on time of a board card through a timer unit; defining four storage spaces in the storage medium to repeatedly record the same accumulated power-on time values at four times, and performing comparative judgment on data; and finally obtaining correct accumulated power-on time of the board card. The problem that corresponding update time is lost or wrong due to power failure of the board card during update of time information stored in the storage medium is solved, and when the storage spaces cannot store the time information due to bad blocks, the situation can be discovered in time and notified to a user.

Description

technical field [0001] The invention belongs to the field of CPLD logic design, and in particular relates to a method for recording the accumulative power-on time of a circuit board. Background technique [0002] At present, in many devices, in order to obtain the accumulative power-on time of the board more accurately and clearly, various timing methods have been adopted, but these methods have more or less disadvantages in several aspects: when the storage medium for storing the accumulative working time When a bad block occurs, it cannot be detected quickly, which may cause a timing error in a short time. At the same time, if the device is powered off when the board refreshes the timing storage unit, the time update may be lost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for recording the accumulated power-on time of circuit boards. [0004] The method for recording circuit board accumulative po...

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Application Information

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IPC IPC(8): G06F11/22
CPCG06F11/2273G06F11/2284
Inventor 卢峥李坤贺陈航陈琴杨浩澜马艳
Owner 中国兵器装备集团自动化研究所有限公司
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