Railway Track Collapse Monitoring System In Mining Areabased On Mems Gyroscope

Railway transportation is a main way of land transportation because of many advantages,such as low cost and high work efficiency.It is the artery of national economy in our country.With the sustained and rapid growth of national economy after reforming and opening-up,the task of railway transportation is more and more heavy.However,geometry shape,size and spatial of mining area caused deviation under the common effect of bad working environment and locomotive in the mining area,which resulted in track collapse.Orbit collapse not only reduced the service life of the railway track,but also can cause mine locative overturned and endanger safety of workers.Only to ensure the accurate of railway track precision,we can guarantee the normal production work in mining area.The phenomenon that railway collapse resulted in the locomotive overturned occurred frequently in recent years.Although many research institutions at home and abroad successfully designed a lot of track collapse monitoring equipment,these equipments exposed many deficiencies,such as low detection efficiency,big errors,high cost,etc,which increasingly unable to meet the requirements of daily maintenance.Aiming at the shortcomings of the existing method of monitoring railway track collapse in mining area,a kind of railway track collapse monitoring system based on MEMS gyroscope was designed and developed which combined with the sensor detection technology,GPRS wireless transmission technology and the embedded operating system as the theoretical background.The main research contents and results are as follows.1.According to railway track field environment in mining area,the working principle of the whole system and the overall scheme of railway track collapse system was proposed.2.The hardware of the system is developed.MEMS gyroscope sensor is chosen as the track Angle device and GPS module is chosen to locate each trackj testing point position.At the same time,using mitsubishi FXls series PLC to complete the processing of sensor data acquisition.;System master control module choose ARM9 motherboard to receive data from the PLC connected with touch screen to complete the data real-time display and storage;GPRS wireless transmission module is used to complete data receiving and sending function between the industrial computer and PC terminal.3.The software of the system is developedThe Windows CE embedded operating system was customed in the industrial control board ARM9 and displayed on the touch screen.Using ladder diagram language to complete the collection of sensors;LabVIEW graphical language is used to complete PLC data read,display and file operations.Afterwards,removing noise filtering of data collected by using the kalman filter algorithm noise filtering;It is convenient for user to remote wireless data by configure GPRS wireless serial port software on PC terminal.The LabSQL toolkit is used to finish Access to Access database,which completed the PC track collapse management software and realized the data writing and query function.4.The system experimentThe experiment verified the system measuring accuracy,communication effect and system reliability on the ground of school laboratory instead of the railway track as experimental object.The experiments results showed that the system works stabilitily,the absolute error of angle data ranges from-0.1 degrees to +0.1 degrees and the relative error rates is less than 0.25 percent,GPS position data error is less than 0.01 meter,dynamic experiment has good response and the system has high precision and wireless transmission ranges,which can meet the job requirements.