铁路信号继电器二次吸合机理分析及参数测量计算

Mechanism Analysis and Parameter Calculation of Second Time Close for Railway Signal Relay

铁路信号继电器工作是否可靠将极大地影响铁路通信系统的稳定性及可靠性。以铁路信号继电器作为研究对象,对触点电压、线圈电流和线圈电压的高速数据进行采集,对采集的数据进行频谱分析和滤波器滤波,去除噪声干扰,通过电磁继电器的电磁机构动作原理分析二次吸合现象产生的机理,研究了二次吸合时刻t_6的计算方法,得出继电器的时间参数。同时分析了时间参数与继电器可靠性之间的关系。通过与实测数据进行对比,证明精度达到了设计要求。

The reliability of railway signal relay will greatly affect the stability and reliability of the communication system. By using the railway signal relay as the sample, the high speed-data acquisition of the relay contact voltage, coil current and coil voltage was completed.ln order to remove the noise interference,the collected data were analyzed by frequency spectrum and filter filtering. Based on the principle of electromagnetic mechanism of electromagnetic relay, the mechanism of the second time close was analyzed, and the calculation method of close time t6 was studied, then the time parameters of relay were obtained. In addition, the relationship between time parameters and relay reliability was described. The accuracy of the test system was proved meet the design requirement by compared with the measured data.