Facing on the phenomenon of railway track often collapse in some areas

a kind of railway track collapse monitoring system based on MEMS gyroscope is proposed. Basic design principle of the system is analyzed. MEMS gyroscope and GPS module are used as attitude measurement components

adopting programmable logic controller（ PLC） to real-time collect sampling of gyroscope and GPS module information

customizing ARM storage control of Windows CE operating system. Data of gyroscope and GPS are fused

noise is eliminated by using Kalman filtering algorithm on Matlab software. Special level sensor is used for static test before the system test. The test results show that the system has accurate readings on the flat and bumpy road. The system can feedback the results effectively when inclination error is more than 0. 4°. The system conforms to the index of railroad track dynamic detection in China

which can be widely used in railway track subsidence monitoring.