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Embedded Marine Environment Information System Communications Technology

Author: TangJinHui
Tutor: SunYao
School: Harbin Engineering University
Course: Control Theory and Control Engineering
Keywords: VxWorks IP Multicast Virtual network
CLC: TP399-C3
Type: Master's thesis
Year: 2008
Downloads: 52
Quote: 1
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Abstract


Marine Environmental Information Application System Integration ocean temperature, salinity , density, sound field , currents , tides, water depth , sediment , and many other information for ship navigation , manipulation and other activities to provide the necessary support and protection. Marine environment information and communication systems as an important part of the application system , become internal and external connection of the bridge. In this paper, the application of marine environmental information systems as an engineering background , completed the marine environment, information and communication system design and implementation. This information system of the marine environment of external communication needs to be analyzed , the completion of design, function modules design and reliability design , and implementation of each module elaborated . Application of serial communication, unicast and multicast communication communication communication in three ways , to meet the diversity of marine environmental information transmission requirements ; design a new proxy server based on VxWorks network topology to ensure the independence of the entire application system works , and also avoid the external network and the internal interaction between devices , is conducive to centralized management ; -depth study of IP Multicast technology and virtual network technology works and successfully applied to solve the waste of resources and information transmission bandwidth and network expansion issues ; application of embedded Ethernet communication technology and redundant backup technology to achieve a high-speed information transmission with high stability and high reliability requirements . Finally, the simulated marine environmental information application systems work environment, the formation of the marine environment with multiple VLAN network integrated communication system , and the entire communication system to be tested. In the TCP / IP protocol stack analysis, locate the position of UDP packet loss , packet loss causes analysis and gives solutions. Test results show that the marine environment, information and communication system designed to run well to meet the marine environment information application systems for information support and protection requirements.

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