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.
介绍了6 4D半自动闭塞改造为计轴自动站间闭塞的一种方案，对有关继电器及其电路进行了说明。
This paper introduced a plan to transform 64D semi-automatic section block into one with Axle Counter . And, it also illustrated relevant relays and its circuit.
在充分保留原有继电半自动闭塞制式优点的基础上，提出了两种微机半自动闭塞方案，并论述了方案中所采取的“故障—安全”措施。
With the advantages of the old system being reserved, two plans of the semiautomatic block with microcomputers are proposed and the measures for safety are introduced.
在充分保留原有继电半自动闭塞制式优点的基础上，提出了两种微机半自动闭塞方案，并论述了方案中所采取的“故障—安全”措施。
With the advantages of the old system being reserved, two plans of the semiautomatic block with microcomputers are proposed and the measures for safety are introduced.
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