对当前大量使用的继电半自动闭塞设备进行了分析，并研究了实现微机半自动闭塞的可行性。
Based on the analysis of the all relay semiautomatic block which are widely used, this paper discusses the feasibility of the semiautomatic block with microcomputer.
本文通过对微电子交流计数自动闭塞设备故障发生率较高的问题进行了分析，提出对问题的解决方案。
The paper makes an analysis on the problem of high failure rate with micro-electronic A. C. counting automatic block equipment and suggests the solution.
本文对移频自动闭塞发送设备信息源电路的频率安全性及稳定性进行了分析，并总结出最佳设计方案。
The article analyses the frequency security & stability of signal generator circuit of dispatching equipment of automatic block with frequency shift, and an optimum design scheme is concluded.
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