A Redundant Electronic System Channel Diagnosis Method and Device
A technology of an electronic system and a diagnostic method, which is applied to the redundancy in the hardware for data error detection and response error generation, etc., can solve the problems of low diagnostic coverage and poor independence of diagnostic measures, and achieves improved coverage, increased The effect of independence
Active Publication Date: 2016-05-04
HANGZHOU HOLLYSYS AUTOMATION
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Problems solved by technology
[0007] The problem to be solved by the present invention is to provide a redundant electronic system channel diagnosis method and device to solve the problems of poor independence of diagnostic measures and low diagnostic coverage in the prior art
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[0051] In the field of industrial automation, electronic systems are widely used in control, monitoring and protection. Among them, making electronic systems redundant is also a common technical means to improve system reliability and security. Two or more channels that are mutually redundant are operated in parallel or active / standby mode. When a failure causes the normal operation to fail, the remaining channels can still guarantee the normal operation of the system. In the prior art, the initiation of diagnostic measures for each channel and the detection of response signals are completed by the central processing unit in this channel, so it may appear that the central processing unit in this channel has a software defect Or the failure of the hardware function makes it impossible to monitor the failure occurred in the diagnosed circuit, so that the diagnosis coverage rate will be low, and there will also be problems that software function defects or hardware function failu...
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The invention discloses a redundant electronic system channel diagnosis method and device. The method is applied to a redundant electronic system including at least two channels. The channel includes a central processing unit and a circuit to be diagnosed corresponding to the central processing unit. A channel is established A circular linked list, wherein the channel circular linked list includes at least two channels, the diagnostic signal and the test signal are initiated by the central processing unit in this channel, and the central processing unit and the diagnosed circuit of the next channel receive the diagnostic signal and the test signal respectively, And the diagnosed circuit will generate a response signal according to the test signal, and send it to the central processing unit of the next channel. When the response signal meets the preset conditions, it will generate a valid judgment result for the diagnosed circuit of the next channel, so that no diagnosis will occur. The initiation of signals and test signals and the judgment of response signals are all completed by the central processor in this channel, which increases the independence of diagnostic measures and correspondingly improves the coverage of diagnostic measures.
Description
technical field [0001] The invention relates to the field of industrial automation, in particular to a redundant electronic system channel diagnosis method and device. Background technique [0002] In the field of industrial automation, electronic systems are widely used in control, monitoring and protection. Due to the aging of electronic components and the influence of the environment, the hardware circuits in the electronic system inevitably have the possibility of failure. In order to avoid or slow down the adverse effects of these failures on system functions and improve the safety and reliability of the system, generally Use specially designed hardware and / or software-based diagnostic measures within the electronic system itself to detect failures. Generally speaking, these diagnostic measures are generally operated by complex electronic components with intelligent functions (such as central processing unit CPU) in the electronic system. Automatically, online, and per...
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IPC IPC(8): G06F11/18
Inventor 周有铮刘康宁温宜明王玉辉
Owner HANGZHOU HOLLYSYS AUTOMATION