为提升船舶喷推进器双微控制单元（Microcontroller Unit，MCU）冗余系统通信与故障检测功能，提高喷水推进器控制系统的可靠性和稳定性。在RS232串口心跳检测的基础上，通过自定义控制器局域网（Controller Area Network，CAN）通信协议，对现有CAN通信网络进行功能复用，提出一种基于CAN总线的双MCU冗余上位机监控检测机制。实验测试结果表明，上位机监控检测方法克服了传统故障检测方法仅针对MCU故障而忽视其外围通信故障的缺点，避免了“双主机现象”，提高了冗余控制系统故障检测的速度与精准度，可以保障双MCU冗余系统平稳、可靠运行。研究成果可为喷水推进器双MCU冗余系统故障检测方式提供一定参考。
To enhance the communication and fault detection functions of the dual microcontroller unit (MCU) redundancy system for the water jet propulsion, and to improve the reliability and stability of the water Jet propulsion control system, based on the RS232 serial port heartbeat detection, a dual MCU redundancy upper computer monitoring and detection mechanism based on controller area network (CAN) bus is proposed by reusing the existing CAN communication network through a self-defined CAN communication protocol. Experimental test results show that the upper computer monitoring and detection method overcomes the shortcomings of traditional fault detection methods that only focus on MCU faults and ignore peripheral communication faults, avoids the "dual master phenomenon", and improves the speed and accuracy of fault detection in the redundancy control system, ensuring the stable and reliable operation of the dual MCU redundancy system. The research results can provide certain references for the fault detection methods of the dual MCU redundancy system of water Jet propulsion.
2025,47(15): 90-96 收稿日期：2024-11-12
DOI：10.3404/j.issn.1672-7649.2025.15.015
分类号：U664.82
作者简介：刘凤龙(1995-),男,硕士研究生,研究方向为船舶控制
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