The Research Of Train Integrality Detection Technology Based On Multiple Sensors

In the development of Railways, the security and efficiency are two important and immutable goals. For the Train security, the research in Train Integrity Detection Technology had great significance and made an important role in the development of the railway. In our country, Train Integrality Detection Technology originate from the track circuit that check train integrity with track occupancy detection in the early, and use the rear protection device to realize Train Integrality Detection later. With the rapid development of China’s railway industry, the traditional Train Integrality Detection Technology has been unable to meet the development needs, the main direction of the future development in Train Integrality Detection Technology is that based on the advanced positioning technology, advanced communication technology and advanced sensor technology.The research object of this paper is Train Integrality Detection Technology based on multiple sensors assisted, the process that from the sensor data acquisition to train integrality detecting at last, is the application of the data fusion, navigation, digital track map, fuzzy theory and computer technology as the foundation in the discriminant of Train Integrality Detection.The main contents of this paper can be divided into three parts:1) The research of the algorithm associated with the application in the Train Integrality Detection. Three parts is included mainly, the application analysis and verification of variable step length of smooth filtering algorithm based on fuzzy reasoning in inertial sensor data filtering, the application analysis and verification of the iterative Kalman algorithm in GPS/INS integrated navigation, and the analysis and discussion of Train Integrality Detection conditions of multiple sensor assisted and implementation of the method related detecting.2) The research of Train Integrality Detection System, the research including the framework of train integrity decision system, decision method of train integrity based on multiple sensor data fusion, and put forward a train integrality detecting and warning system on the basis of train integrity decision system. According to the analysis of this train integrality detection conditions of multiple sensor assisted, a decision method of train integrality based on fuzzy reasoning is proposed, and made the experimental verification and comparison in the traditional detection method, proved the feasibility and validity of the proposed method.3) Mainly included the design and the implementation of the overall system and each subsystem. The whole system can be divided into two parts, the system onboard equipment and the ground system. The ground systems can be divided into three parts, the communication subsystem, storage subsystem and monitoring subsystem. The system has been successfully set up in the railway station site, and done some relevant experimental verification.Through the research of Train Integrality Detection Technology for multiple sensor, designed a Train Integrality Detection System with a variety of advanced technology, put forward the design train integrality detection system, and by making the actual system to prove the feasibility of the system. It is an important attempt to research on detection technology of train integrity, proofed that the future development direction of Train Integrality Detection technology.