高速动车组的电磁环境极其复杂、运行条件非常严酷，由电磁干扰导致的 BTM故障问题频出，引发行车安全隐患。本文针对动车组车载BTM设备的电磁干扰防护进行深入研究，首先建立了应答器-车载 BTM设备信号传输模型和车底电磁骚扰源模型，分析了对车载BTM电磁干扰导致的结果，最后以某型动车组实际运行情况为例，分析其车载BTM的电磁干扰防护特性，提出更为合理和科学的研究与试验方法。%The electromagnetic environment of high speed EMUs is extremely complex due to harsh running conditions.Therefore,frequent occurrence of BTM fault problems caused by the electromagnetic interference may lead to traffic safety problems.In this paper,the electromagnetic interference protection of EMU onboard BTM equipment was studied.The signal transmission model for balise-onboard BTM equipment and vehicle bot-tom electromagnetic interference source model were first established.Next an analysis was made on the results caused by the electromagnetic interference of onboard BTM.Finally,in the case of the operation of a certain type of EMU,the BTM electromagnetic interference protection characteristics of the EMU were analyzed, more reasonable and scientific research and test methods were proposed.
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