LKJ系统设备是用于保障列车安全运行的控制设备,对防止列车冒进、冒出关闭信号机和防止列车超速起着决定性的作用。LKJ设备存储的数据必须随着线路限速的变动,工务基础线路、供电接触 LKJ system equipment is used to protect the safe operation of the train control equipment, to prevent the train from advancing, turn off the signal output and to prevent the train speeding plays a decisive role. LKJ device data must be stored with the line speed changes, infrastructure lines, power supply contacts