Research On Rail Transit Data Acquisition System Based On DSP

With the rapid development of China's rail transit technology,railway has become the most important means of transportation in recent years,but railway safety incidents have aroused great concern from all walks of life.Therefore,train data acquisition system and contact line inspection system are studied in detail in this paper.A railway traffic data acquisition system based on DSP is designed to ensure the safe operation of trains.As the research on distributed network security monitoring system started relatively late in China,the complete set of equipment of foreign companies is mostly used at this stage,however,the equipment is not suitable for the current railway standards in our country.Therefore,on the basis of summarizing the advantages and disadvantages of domestic and foreign equipment,this paper designs the equipment suitable for the current railway standards in our country.It takes TMS320F2812 as the core and gain the corresponding data through controlling temperature sensors,humidity sensors and barometric sensors.Using C# language to develop two upper computer software,one function is to realize the information transmission of temperature,humidity and air pressure between DSP and host computer through Modbus serial communication,and realize the real-time playing of video.The other is to realize the functions of input,collection and preservation of the status data of contact line during the operation of the line through the basic design of the database.This design which is aimed at practical application introduces the design of the software and hardware of each module of the system,including the software development foundation,the hardware design process,the software design process and the database application.In addition,the system has been simulated in the laboratory to ensure that the equipment can meet the standards of field application.