Based on the on-site practical situation, security index and usability index of the dual module hot spare (DMHS) computer interlocking control system are studied.

从现场的实际情况出发，笔者研究了双机热备计算机联锁控制系统的安全度和可用度指标。

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Finally, it detailed described the basic logic structure and function module design of the automatic test of the computer interlocking system, and makes a summary and outlook to the full text.

最后，详细地描述了铁路信号计算机联锁系统自动测试系统的基本逻辑结构及其功能模块设计，并对全文的研究工作进行了总结和展望。

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The module is a interface device between the old coded device and the computer interlocking system.

铁路信号计算机联锁系统是一个有着高可靠性、故障安全性和实时性要求的安全关键系统。

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