Development of Safety, Control and Monitoring System for Medium-Speed Marine Diesel Engine

Abstract

A local safety, control and monitoring system designed and implemented for medium-speed marine diesel engine is presented in the paper. The system consists of a control and monitoring sub-system, a safety sub-system and an online monitoring sub-system. The data exchange among the sub-system is conducted with the communication link of RS-485 interface. The hardware circuits and logical algorithm of the system are developed to achieve the functionalities in terms of diesel engine staring, stopping, fault shutdown protection, etc. The operating data of the diesel engine are captured in real time and the vital operational parameters and alarm messages are displayed with the nixie tubes and LED. As well, depending on the online monitoring sub-system, the control instruction and operational parameters could be monitored, analyzed and recorded. Additionally, a test platform is established to verify and validate the function of the system. Finally, the matching test between the system and the diesel engine is carried out via the experiment bench of MAN16/24 medium-speed diesel engine. The results show that the local safety, control and monitoring system works stable and the functions of the conventional control, parameter monitoring and alarming for the diesel engine meet the design requirement.