A Design Method Based on Inherent Testability of Remote Control and Monitoring System for Marine Main Engine

摘要

During the design phase of a new electronic monitoring and control system, carrying out research on inherent testability can promote the entire system's testability level and make it be apt to diagnose fault and maintain high reliability. To improve the current insufficient application of inherent testability for remote control and monitoring system (RCMS) of marine main engine, this paper proposes a method to design RCMS, using microcomputer control and controller area network (CAN) technology, which bases on the perspective of the inherent testability. Firstly, the paper introduces the object oriented hierarchy structure of framework and three relatively independent subsystems are included: remote control sub-system (RCS), safety protection sub-system (SPS) as well as monitoring and alarm sub-system (MAS). And then, for each subsystem, functional unit division and module design are carried out, that is, conducting designs for Line Replace Unit (LRU) and Shop Replace Unit (SRU). Finally, dual redundant CAN bus accomplish the system network integration. After a long period time of ship test, RCMS has been running smoothly, and the experimental results meet the testability requirements.