Dynamic Track-detecting Equipment On The Train Of Qinhuangdao-Shenyang Passenger Dedicated Line

Under the push of gradually fierce competition of internal transportation market, the railway department in our country obviously accelerate the steps of development that the topic is high speed,heavy load and safety. A large number of fast operating lines come into use in succession. Various new type of increase-speed vehicle,fast-speed vehicle,fast multiple unit cars and heavy-load freight vehicle are designed,manufactured and put into operation in succession. Our internal railroad presents an unprecedented situation of development. Along with it, a series of new problems are put forward in the management of line maintenance and operating. Under present condition, how to deepen the applications of track-detecting data and maintain lines in time is the chief problem that work section must faced and solved. In recent two years, each unit of work section has done a great deal of work and equipment reformation, such as replace crosstie,change curve and replace new style engine vehicle etc, to make a good foundation for the favoring actualization of Increase-speed. But, after Increase-speed the fact is the effect of vehicle running to line is greater and the change of track geometrical size is faster. To insure the safety of vehicle running after Increase-speed, it is necessary to refit lines in time via check of high- precision and high- density.We use experience of track-detecting train system and sway-train instrument for reference, break away from the management mode of fore passed railway line maintenance, develop a new type of dynamic track-detecting equipment. As the engine runs in high speed, we use the operating engine as a carrier to realize a real-time detecting,following and alarm equipment of line condition. We come to a conclusion for the typical problem. We make a benefit exploration for the maintenance and detecting of passenger-dedicated line.Therefore, at the beginning we make data test and establish a detailed system project. We decide that the system module includes three parts, that is : on-train equipment,ground detecting center,wireless communication. Detailed design as follows:In our project, we adopt general auto-control,computer and data-base technique in on-train equipment to gather track-detecting data .We accumulate original detection data. Via the technique of data digging and exceptional point probability analyzing of a certain number of trains, we can analyze the data from various angles and layers. So that, we can grasp the state of line equipment real time and can forecast the variation rule. At the same time, we design a reasonable ground detecting center to realize the organic combination between GIS and detection data via a simple,special information system which is customized from the given equipment in line document and line vertical section map. Using GIS technique, we can accurately mark out the point on the map where accident often occurs.We make on-train equipment which takes into account the characteristic of railway engine equipment. It adopts built-in single chip and can work in execrable condition. It has enough ability to deal with and store signal and can send data to server,receive long-distance maintenance instruction via wireless channel. Considering the cost of equipment and operating, we design the hardware worktable with TAX2 box and Simons MC35 GPRS module and adopt supervising equipment which has safe orient and is easy to installed and maintained.Considering the influence of different train and speed, we design the signal sensor via in-depth analysis of original track-inequality signal. After demarcating exam and test running, we set the experienced value of signal filter and analysis. It has limitation that primary system module adopts the bodywork-sensor as assessing standard. In our new design, we use an analytic method which compare the acceleration detection data with original track geometrical state and analyze turning rack sensor signal at the same time, so that we can assess it more accurately. This project is the main part of the system which provides a reasonable and efficient collecting core via three sensors and their installed position in system design.We adopt GPRS network as train wireless data communication table, after integrative analysis of train wireless communication,applying condition,cost of system operating and standard of railway wireless communication. To make sure that the information can real time feed back to the server, we investigate system data stream,program multi-function protocol and reliable management software of connect-in server using the principium of server in bank for reference. The software is programmed with VC6.0 tool. It can realize multithreading network Win socket communication and can make sure that the sampling data is delivered exactly and in time. So that we can establish a multi-layer and extensible data communication system.Applying vague cluster analysis method, we increase the repetitiveness of gathering and analyzing of system signal. We compare several kinds of location modes such as GPS fix position,TAX2 train monitor equipment and DF16 train speed sensor etc and then design our accurate fix position method. Using railway line vertical section data,GIS management system which is developed by ourselves and the theory of vague cluster analysis, we form a whole system of auto-detecting and auto-analyzing which reduces the error due to manual judgment. The system we design can accurately reflect the line quality in many times of actual operating, especially that GIS system can intuitively fix the point where track-inequality occurs. We are making further efforts to research signal analysis and pattern recognition. Through the analysis of characteristic wave we can reduce the interference to system from railroad switch of culvert,bridge and line vertical section as far as possible and can increase the ability of auto-removing normal phenomena so as to further reduce manual-interference and increase efficiency.We believe that carrying out the project can not only make the operating management more economic and efficient but also make the maintenance and decision making of technique state more scientific and at the same time increase the reliability and safety of train running. It changes the traditional periodical overhaul institution to a advanced one----mode maintenance and changes present periodical,fixed and segmented way of maintenance to a real time,on-line mode monitor which can at any time grasp arisen fault and operating work condition through technical diagnosis of line and also can effectively establish a non-segmented maintenance method that it's center is function. We believe that though integrative application of modern technology such as mathematics,physics,mechanics,chemistry,electron technology,computer technology,information technology,artificial intelligence etc on line operating maintenance and management, it can be sure that train running is reliable and safe,maintenance decision is scientific and operating management is efficient and economical which is the develop direction of modernization of railway engine operating management in our country.