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The Research of Data and Image’s Transmission of Remote Electric Power Monitoring System

Author: ZhangHaiYing
Tutor: YuZhen
School: Xiamen University
Course: Detection Technology and Automation
Keywords: Supervisory system Data communication Image correspondence
CLC: TM769
Type: Master's thesis
Year: 2008
Downloads: 193
Quote: 1
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Abstract


Along with the development of automated technology, the communication as well as the multimedia technology, the electric power supervisory system had the considerable development. Faced with the ever-changing demands, the traditional "four remote" function already cannot completely satisfy the supervisory system’s demands. Therefore introduces the image monitoring to consummate the electric power long-distance supervisory system. The image monitoring, through the information contained in the images we can know more about the monitoring scene. The monitoring objects of the electric power supervisory system mostly are static state, so if the system achieves the image transmissions it can basic meet the demands. The image also is a kind of data, the analog signals is converted to digital signals, so the data can be compressed. Then it will be transmitted by the image document’s way on the channel, realizes the image monitoring. To the entire supervisory system, the communication is the most crucial part, it divides into data communications and image communications.The paper bases on the electricity distribution project which carried on the laboratory. first, makes analysis to the realization of wireless data communications and has compared two kinds of communication networks: the project based on wireless digital radio and the project based on GPRS wireless transmission. Then conducts the analytical study to visual communication’s key technologies, and carries on the comparison to several modes of image communication. Because the data of the image document is very huge, so it is necessary to make the sub-data in order to transmit in the COM. It realizes the image files and other data using the identical channel to carry on the transmission. Using the video frequency gathering card and camera monitoring the scene, and sending the image to the monitoring center, so that it realizes the long-distance supervisory system.. the platform of the system is Visual C++, from the experimental angle, uses video frequency gathering card, camera and PC to make up a system.The first chapter briefly introduced the development of the electric power supervisory system and communication technology; the second chapter introduced the remote supervisory system basing on the different means of communication; the third chapter analyzed the realization of long-distance data communications; Chapter IV introduced the key technology in the image communication; In Chapter V realized the image communication in experiment; The last chapter is the summarize of the whole text and some prospects.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation > Computer application in power system
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