A Real-Time Monitoring System Of High Speed Train Bogie Hunting Instablilty Based On FPGA

The hunting of the train is a self-motived activity, which is a consequence of the locomotive traction. When the amplitude of the hunting exceeds a threshold, the hunting is instable. The track will suffer from tremendous damage, and the axle bearing will also suffer from overheat or damage, or even worse, a derailment, which brings a great threat to the safety of the train operation. Consequently the avoidance of the instability of the hunting appeals a lot in the high speed train vehicles researching. Real-time monitoring the hunting of the high speed train is one of the most effective solutions to ensure the safety of the train traffic.With the rapid development of the microelectronics and computer technology, the trend of the embedded system evolves to the system on a chip (SOC). System On a Programmable Chip (SOPC), which is based on FPGA and Embedded soft-core, appeal for an increasing number of developers due to its design flexibility, portable, hardware and software programmable. SOPC, which is a novel software and hardware co-designed system design technology, is kind of reconstructive system on chip based on programmable logical devices, integrating the merits of the SOC and PLD/FPGA, is a flexible and effective solution of the SOC. SOPC,which is an effective-cost, short term design technology, leads the development of the circuit system.In this thesis, a real-time high speed train bogie hunting instability monitoring system was designed. This system is based on the locomotive vehicle system dynamics. We focus on the high speed train bogie activity mainly. The entire system was classified into two components, the dominated control center, and several sub-measurement systems respectively. The dominated control center is located both in the head of the vehicle and the tail of the driving cab. The sub-measurement systems are located in bottom of the device cabin, several bogies were included. The two components are communicated via the CAN bus. The data collection, analysis, process, storage and the instability report are accomplished cooperatively. The system provides a friendly UI for users to execute various of operations and settings.