CTCS3-300T列控测速测距故障研究及对策

摘要

高速列车运行过程中测速测距是列车自动控制的重要环节,是实现列车运行间隔防护的基础.然而测速测距功能故障给铁路运营带来极大的影响,会触发运营列车制动甚至紧急停车.发生该故障的原因主要由电磁干扰引起,或是测速测距系统中速度传感器或雷达以及脉冲接收单元硬件故障导致,故障现象相似,给处理上带来一定的难度和复杂性.根据CTCS3-300T列控测速测距系统的工作原理以及系统内部各设备之间的相互关联,并结合故障记录数据,对常见的测速测距故障类进行分析,提出合理化解决措施,为准确有效地处理这类故障提供重要参考.%The measurement of speed and distance is an important part of train automatic control during high-speed train operation and serves as the base of train operation interval protection.However,the fault in speed and distance measurement causes great impact on railway operation and triggers train braking or even emergent stopping.The main cause that accounts for the fault is the electromagnetic interference,or hardware fault of speed sensor or radar and pulse receiving unit.The fault phenomena are similar,which brings some difficulties and complexities to the fault control.According to the working principle of CTCS3-300T speed and distance measurement system and the relationship between internal devices of the system and the fault record data,this paper analyzes the common speed and distance measurement faults,puts forward reasonable measures and provides important references to deal with these kinds of faults accurately and effectively.