The Development Of Gas Pipeline Emergency Repair On-site Mobile Monitoring And Decision Support System

This thesis proposed the solution of repair visualization,aiming to complete decision support system of gas emergency repairmen.City gas is an important part of city energy structure and city infrastructure,it can provide clean and efficient use of the energy for industry,city commercial and residential life,but with the rapid development of the gas industry,the number of gas pipeline network is increasing.The gas accident has occurred frequently because the problems of gas pipeline aging,corrosion and other objective factors or subjective factors increasingly prominent.Gas Accident major impact on social and personal safety.It is essential and must be put on the agenda to handle fuel gas accidents efficiently and to carry out a gas emergency response decision support system.However,the accident scene has none equipment to remote the video image information to all levels of dispatch command center.It is not conducive to real-time control the scene for dispatching person,and likely to cause command errors or lead to site disposal operations casually.This thesis based on the above background,combined with the actual repair process of Beijing Gas Group,proposed a system of wireless multimedia sensor network based on WiFi,which can realize the wireless transmission of the scene image.The purpose is to enable the dispatch center personnel to keep abreast of the scene in real time,and to provide the assistant decision-making basis for the on-site emergency repairing work.At the same time,this thesis studied the group decision theory,and developed a program of evaluation system of decision-making.This thesis has made a preliminary study on the assistant decision making of the gas industry.This thesis carried out the following works:(1)Researching the methods of wireless video transmission and building the wireless multimedia sensor network node as the basic works.We choose the 32-bit microprocessor,which is called STM32F103RET6,combined with camera module OV2640 and WiFi module to achieve the wireless transmission of image video.This thesis described in detail the design and implementation of wireless video capture node on hardware and software,including the module selection,interface circuit design,as well as the PC program development.(2)We studied the algorithm of Gas Emergency Aid decision,proposed the model of group decision support based on Agent and the evaluation system on decision-making scheme based on AHP to determine the associated weights of the impact factors of program evaluation system.The system has the function of dynamic assessment and decision making adjustments based on the visual monitoring platform.The main innovation of this thesis is to realize the wireless transmission of multiple image acquisition nodes,which avoids the cumbersome and economic waste of wired transmission.In addition,the wireless transmission of information and communication has become the trend of the future direction of development.In this thesis,the image wireless transmission is applied in the gas emergency repair work,greatly facilitates remote supervision of the repair process,dynamic adjustment of decision support program.This study is the first time in the gas maintenance industry.We carried out a preliminary test on the system to verify the reliability of the system.This study has practical application value and laid the foundation for the subsequent engineering application.