动车组故障检测研究

Research on the Fault detecting of EMU

摘要:

为了保障动车组的安全运行,需要在动车组运行时进行实时在线故障检测,以便及时、准确地测量出动车组逻辑控制电路的各种故障,特别是随机、瞬时出现的故障;论文特别针对动车组可能发生的随机性、瞬时性故障,研究了该类故障检测的特点以及捕捉快速脉冲信号的方法,设计了应用于单片计算机模数转换电路前端的高速信号采样保持电路,研制了专用的动车组随车故障检测装置;在现场测试过程中,将动车组随车故障检测装置与多通道示波记录仪配合使用,对动车组的逻辑控制电路关键节点的控制信号进行了现场随车实时测试,并对现场随车测试结果进行了分析研究;论文的现场实验为建立高速动车组逻辑控制电路的抗电磁干扰技术标准、改善高速动车组的电磁环境做了初步的探索并提供了有益的参考。

Abstract:

In order to ensure the safety of EMU, need to detect the fault of EMU real-time when it is running, for find out the fault of EMU’s logic control circuit in time, especially for the stochastic and instantaneous faults of EMU. We research on the method of the stochastic and instantaneous faults detection and capture for fast pulse signal and design a on-board equipment of fault detection. The equipment adopt a high speed sample-and-hold circuit based on a single chip computer system With the use of the on-board equipment of fault detection and the multi - channel oscilloscope recorder, We test the control signals real-time at key nodes of the EMU’s logic control circuit on the scene, then give out the analysis conclusion of the test results. This paper gives out the reference of Electro Magnetic Compatibility(EMC) of high speed EMU’s logic control circuit and the primary grope to improve the EMU’s electromagnetic environment.