关键词: 列控中心, 区间占用逻辑检查, 闭塞分区, 轨道区段, 编码防护

Abstract: In automatic block section, TCC judges that the selection for basic unit of occupied logic check function is block section, but the occupation and clearing of track circuit is judged by taking section as basic unit actually. This paper proposes an implementation scheme for logic state judgment taking track section as the unit, compares with the logic state judgment results and code sending protection by taking block section as the basic unit, analyzes that taking the section as basic division unit has more benefits for safety protection, and which has no impact on existing equipment. This paper also prospects the feasibility for the way of the basic unit of logical judgment to be considered in the future.

Key words: train control center, section occupation logic checking, block section, track section, coding protection