闭锁信号是阻止保护动作于跳闸的信号。换言之，无闭锁信号是保护作用于跳闸的必要条件。只有同时满足本端保护元件动作和无闭锁信号两个条件时，保护才作用于跳闸。
通过对执行机构、控制部分、闭锁信号的分步实施，实现了对井口提升的安全闭锁的工作要求，使用效果良好。
The construction is implemented sequentially on the actuators, control components and locking signals, thus realizing the safe locking of shaft hoisting, and the result of application is satisfying.
根据《煤矿安全规程》规定的要求，对井口信号与操车设备实施闭锁控制的技术改造。
According to the requirements of, the technological reconstruction of locking control of shaft signal and machine operation equipment is carried out.
在铁路信号集中闭锁(信集闭)微机连锁控制系统中，基于通用组态软件建立语音系统的内嵌式结构尤为重要。
It's very important to realize the inside frame of the voice system based on general configuration software in the interlocking computer control system.
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