Research On Ground Wire Missing Monitoring System Of High-Speed Railway

Ground wire system of High-Speed Railway is used to ensure that all the potential connection between the equipment and reduce the potential difference, so that the whole system is safe and reliable operation. And because ground wire of copper inside the material, which is expensive, often cut off, and not easily found, is a serious threat to the safe operation of trains. Therefore, the Research on ground wire missing monitoring system is very necessary.For this, we carried out a lot of data queries. Using MATLAB software under the AT power supply comprehensive earthing system was simulated and ZPW-2000 A Frequency Shift Track Circuit components and working principle are analyzed in detail, in order to determine the location and monitoring data. Therefore, a scheme of ground wire missing monitoring system is proposed.The system was divided into two parts, the lower position machine and station machine. Implemented as part of the next crew to monitor the receiving end of the track circuit voltage waveform characteristics and spectral characteristics,comprehensive historical data, judgment is given through ground missing functionality. This paper respectively described the hardware circuit design and software program design of the lower position machine detailedly. Station machine part was written by Lab VIEW. This paper respectively illustrates the login interface,communication status query, the interval state query, and the historical record of the inquiry. In order to enhance the efficiency and practicality of the system, the system uses the ARM Cortex-M4 core as the main chip microcontroller STM32F407. Finally,in order to understand the overall performance of the system, this paper tested the whole system, and proved that it can realize the expected function.