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伴随中国铁路的高速发展,铁道信号设备在现场使用中,遭遇的雷击问题越来越多,特别是瞬态雷击脉冲干扰对设备的影响最为严重。为此,提出一种抗干扰强的雷击环境下铁道通信信号准确采集模型,通过对雷击环境下产生的铁道通信信号频率进行降噪分析、排序和识别转化为数字波形,经由铁道通信信号采集矩阵模块将信号测量相量进行因子选择后,根据选择结果完成干扰排除,实现准确采集的过程。仿真实验表明,该模型能够有效地提高铁路通信信号设备的采集准确性,抗干扰能力强并且在长时间运行过程中,定位速度快,可靠性强。
With the rapid development of China’s railways, more and more lightning strikes are encountered during the field use of railway signal equipment. In particular, the impact of transient lightning strike pulses on equipment is most serious. Therefore, this paper presents an accurate acquisition model of railway communication signal under the condition of strong anti-interference lightning.Through the noise reduction analysis of the railway communication signal frequency generated in the lightning environment, sorting and identification are converted into digital waveforms, and through the railway communication signal acquisition matrix After the module selects the signal measurement phasor for the factor selection, the module completes the interference elimination according to the selection result and realizes the accurate collection process. Simulation results show that this model can effectively improve the accuracy of acquisition of railway communication signal equipment, and has strong anti-interference ability. In the long run, the model has fast positioning speed and high reliability.