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Design of Communication Network for Distributed On-line Monitoring Vibration System on Basis of CAN Bus

Author: ChiMinJie
Tutor: YeShengHua
School: Tianjin University
Course: Measuring Technology and Instruments
Keywords: Vibration FCS Communication CAN bus Network bridge SPI
CLC: TB533
Type: Master's thesis
Year: 2005
Downloads: 163
Quote: 1
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Abstract


The vibration condition of the ship can be used to diagnose equipment operating characteristics of the ship , the vibration condition monitoring can provide a reliable basis for real-time detection of failure . For special purpose ships , due to noise and vibration will affect the acoustic performance of the ship , it is the noise and vibration of the equipment for real-time monitoring , analysis and diagnosis , therefore , the real - time noise and vibration monitoring network system installed in the ship is very necessary. Bridge of communication networks as data transmission , the reliability of a direct impact on the operational reliability of the system as a whole , this paper, a Controller Area Network CAN bus communication networks , signal transmission communication into the traditional distributed control system DCS site bus Control System FCS, its main features are : full digital signal transmission , the thorough dispersion control functions , system openness and interoperability . The use of self-developed CAN bridge can facilitate the expansion of the network nodes . The main contents of this paper are: 1 , the overall design of the distributed online vibration monitoring network system , comparing the advantages and disadvantages of the fieldbus control system FCS and distributed control system DCS , the final selection of the CAN bus communication network build . 2 , based on field bus technology to build a central computer -CAN bridge - measurement processing unit - the FCS system of sensors hierarchical network structure model . The structural model has a safe , reliable , extended the simple , real-time , and other characteristics . 3 , to write a software program for system expansion and on the bridge of communication between different levels of CAN . Including the internal SPI communication interface program and external CAN communication interface program . 4 , the preparation of the host computer via the CAN interface card to receive and send communication procedures . 5 , to build a data transfer communication network used in the experiment , structure correctness of the data transmission communication network as well as the feasibility of the software program is verified by experiment .

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CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Vibration, noise and its control > The occurrence of vibration and noise
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