Dual CPU redundant communication hybrid fault detection technology for shipborne electrical plant control system

Abstract

Objectives In order to improve the reliability of shipborne electrical plant control systems and solve the key problem of fault detection in CPU hot backup redundant communication, a comprehensive set of fault detection mechanisms is proposed. Methods After analyzing traditional CPU fault detection, this study proposes a hybrid fault detection mechanism combining the network fault detection method with the third-party monitoring heartbeat method. Based on the designed CPU redundant system architecture, the principles and software implementation of the two proposed fault detection methods are analyzed, and the proposed fault detection method is verified on an actual device. Results After actual device inspection, the results show that the proposed fault detection technology overcomes the shortcomings of traditional fault detection methods such as focusing on CPU faults but ignoring CPU peripheral communication faults, and susceptibility to the dual host phenomenon. It also improves the speed and accuracy of fault detection to ensure the stable and reliable operation of the CPU redundant system. Conclusions The results of this study can provide references for the CPU redundant communication fault detection methods of shipborne electrical plant control systems.