Design Of Ship Engine Room Monitoring And Alarm System Based On Ethernet

Ship engine room monitoring and alarming system is an important content of engine room automation; its main function is to real-time monitor work status and operating parameters of a variety of devices in engine room, to ensure the safe operation of the ship. The cabin is the heart of the ship, concentrated mainly power equipment of the ship. During operations, in order to ensure the normal operation of the ship, it is needed to real-time monitor the work status of the working parts of the cabin, so the advanced Ship engine room monitoring and alarming system is very important for ship’s navigation safety.Fieldbus network-based monitoring and alarming system is the most advanced engine room monitoring system that the overall use distributed design, and have two parts:remote monitoring unit and distributed primary data processing unit, both communicate via Profibus, CAN bus, Ethernet fieldbus. With the development of automation technology, especially electronic technology and communication technology, fieldbus network-based monitoring system also showed some deficiencies behind the times, Such as:the use of wired fieldbus communication, increasing the complexity of the cabin wiring and not conducive to a flexible layout of cabin equipment; using traditional alarm display, interactive interface unfriendly, complicated operation, and so on. Against this background, this paper based on the existing fieldbus network-based monitoring system, using Ethernet communication technology and embedded Linux system platform, to design an Ethernet based Ship engine room monitoring and alarming system, research contents include:(1) After research literature, study deeply for the theory of ship engine room monitoring and alarming system, familiar with the composition and function of each part of ship engine room monitoring and alarming system, understand clearly for the technical requirements that the system must meet.(2) The overall design of system. The whole system uses a distributed system layout, composed by remote monitoring unit and primary data processing units, both of which communicate via Ethernet network. Primary data processing unit will complete field data acquisition and processing, on-site alarm display and upload the data to a remote monitoring unit via Ethernet networking; remote monitoring unit will collect the data that primary data processing unit uploaded, and display alarms centralized, to achieve remote monitoring.(3) Hardware design of system. We use embedded ARM and embedded Linux system technology to design hardware platforms of primary data processing unit, and use Altium Designer software to design PCB circuit board and final production hardware platforms circuit boards. The hardware part includes:data processing module, Ethernet communication module, a touch panel display module, and so on.(4) Software design of system. Using QT software to design human-machine interface software which runs on Linux systems and windows system respectively, the former is used in the alarm display of primary data processing unit, and the latter is used in the alarm display of remote monitoring unit.(5) Testing and validation of system. After the completion of the design of both the hardware and software, combine them to form a complete ship engine room monitoring and alarming system. System testing in a laboratory environment, analyzes and solves the problems, and constantly improves the design.