Railway Wareless Monitoring System

With the Development of our country economy, the railroadtransportation of our country obtains the swift and violent development.Recently, for the sake of relieving the conflict between transportationdemand and the transportation capability, our country took on raising trainvelocity, adding the railroad capacity, in order to relieve railroadtransportation pressure. Moreover this brought the railroad transportationsecurity problem, and the Railroad Wireless Monitoring System wasdesigned for the sake of guarantee railroad transportation security andspeedily operation . First of all , writer introduces the Wireless Dispatcher'sCommunication System of train in this text. Then draw the special-purposemaintenance management equipment of the wireless dispatcher'scommunication system of train - systematic monitoring equipment from it,The position in the total system of the monitoring equipment systematicallyas a whole. Introduce one a piece of special examples come and provesystem monitoring equipment need function that finish in detail. Thesystem that this text is designed is a wireless monitoring system, to thesignals of intensity of field, pronunciation signal and going back foranalysis of a bell of signalses along the line of the railway through the radiostation, Come channel to judge railway converse state, wireless relayingthe working conditions of equipments, Assist the user and maintain thewireless dispatcher's communication system of the railway . The author, on the basis of project demand scheme of what the useroffered at first, Combine about special-purpose to maintain standard theRule and main technological condition of Wireless Dispatcher'sCommunication System of train TB/T No. 3052 -2002 Ministry of Railwaysthe People's Republic of China, takes the software engineering's analysismethod to analysis the function demand in system. The entire system,from the angles of function, was divided into three main module line input, 74吉林大学硕士学位论文monitor and test, reappear. Through using the two aerials on the test trainto monitor the signal data and sound data of the four frequencies on theline, system monitors the wireless communication cover effect of therailroad line. After calling the relaying equipment on the line, system canjudge the state of the equipment by analyzing the ring back signal. Thestatistical form of converse the result close to sector, and the relayingequipment state statistical form, and the intensity of field cover result withstatistical form, received by monitoring the statistics and analysis of signal,can be to arranging the basis maintained and overhauling which adjust thecommunication equipment as the user. The development tool that thissystem employed is Lab Windows/CVI, the ANSI C develop environmentthat the National Instruments corporation (abbreviate the NI corporation)putted out. LabWindows/CVI combined the powerful and flexible C language withspecialized means of observing and controlling that is used the data acquisition toanalysis and display organically to unite. Its integrated development environment,interactive programming means and function panel and the rich library function,as a whole, improved C language capacity enormously. This softwaredeveloping instrument has offered the flexible development means andstrong development function, Suitable for testing technology, controltechnology, virtual instrument technology and signal and analyzing thatdiagnoses technology with the trouble mainly, It is a first-selected softwaredeveloping instrument of technical staff of the relevant field . In the course of carrying on the demand to analysis and design to thesystem, authors have used the thought of the soft project. At first carryingon demand analysis to the system according to the stipulation that in theuser's are marked at first, It analyses repeated to go on and link up withthe user on demand the demand...