An Integrated Monitoring And Controlling System Based On FCS For Electrical Marine Propeller

The project of the dissertation, an integrated monitoring and controlling system based on FCS for ships propelled by electrical power, is an important part of the parent project Multi-Mode Engine Room Simulation System, a laboratory - constructing project of Shipping Simulation Center of Shanghai Maritime University, one of the key laboratories of the Ministry of Communication, and is financed by the Science and Technology Development Fund of Department of Science and Technology of Shanghai.The aim of this task is to implement monitoring and controlling system for electrical marine propeller system. The quantities to monitor and/or control are real-time and highly variable, in order to show their statuses and processes, the data must be acquired in real time, and then the data flow with high speed and large quantity follows, as well as high speed communication, real time data processing and storage. These goals can not be achieved by old-fashion monitoring and controlling system, and complete changes should take place from controller to network to accomplish the objective.To meet above requirements, MA-2100 MCU and intelligent PCCAN card are designed and developed. The framework of integrated monitoring and controlling system, based on the CAN bus, MCU, and distributed technology, is composed of four networks: Field Monitoring and Controlling network, Extend Monitoring and Controlling network, Information Management network and remote network. The Field Monitoring and Controlling network consists of 1 center node of monitoring and controlling and 6 pairs of field monitoring and controlling equipments, responsible for implementing basic functions: hi-speed data-acquisition, real-time processing, alarming, controlling and operative data-displaying, transferring tested data of the process to the center node and other field equipments, receiving orders from the center node to remotely modify their parameters, and executing remote instructions. Field monitoring and controlling equipments, which are located in the field and meet theIVrequirements of decentralization of monitoring points, can not only be connected to the center node via CAN network but also run alone without the center node, so they improve the reliability of the system. The requirement of large amount of real-time data hi-speed communication is met by CAN. The software in the center node with friendly MMI is easy to use. The center node stores the real-time operative parameters of equipments and implements the resource sharing. Meanwhile it accomplishes centralized management in monitoring and controlling, and on-line redundancy of equipments, so it enhances the synthesis capability. Cooperated with extend monitoring and controlling network, the center node achieves the unattended engine room.One local monitoring and controlling equipment can entirely display what is shown on another remote node's LCD in the system, which means large data packages move between the two nodes. Furthermore, data in the system have four priorities, and those with high priority must be transferred first. The above two functions can not be satisfied by current CAN application protocols, so a new CAN application protocol, MPLP based on the protocol HiLon B is brought forward in the dissertation. The format of protocol HiLon B is changed to support four data priorities. Beside this, several technologies: cross link, segmentation and resemble of package and dynamic memory management, are used to achieve the two functions: transmission of large data package and multi-priority. It needs data segmentation, resemble and buffer to achieve the former one, so how to keep frame order proper? This problem becomes more complicated with multi-priority. Another problem of conflict with memory limitation occurs to buffer large packages, so how to make reasonable use of memory? The dissertation focuses on how to solve the series problems, and the whole implementation of the protocol MPLP is given.The CAN communication interface is to support the field monitoring and controlling equip...