Abstract: This paper introduces a software based on ObjectARX, which can quickly draw the metro signal layout and automatically generate the interlocking table of metro main line, and provides the design algorithms of main function modules. The design idea of this software is to use ObjectARX development package to design a set of standard metro equipment element library on the CAD platform, and package various metro equipment elements into standard user-defined entity blocks. The software can effectively identify and calculate the attribute information and link relationship information of various equipment elements in the signal layout, so as to rapidly calculate the route interlocking information and automatically generate the interlocking table for metro main line. The compilation efficiency of interlocking table is greatly improved, and the error probability is greatly reduced.

Key words: interlocking table, signal layout, ObjectARX, secondary development by CAD

摘要： 介绍一种基于ObjectARX开发，能够实现地铁信号平面布置图快速绘制并自动生成地铁正线联锁表的软件，并给出主要功能模块的设计算法。软件的设计思路为采用ObjectARX开发包在CAD平台上设计一套标准的地铁设备图元库，将各种地铁设备图元封装成标准的自定义实体图块。该软件能够有效识别并计算出信号平面布置图中各种设备图元的属性信息及图元之间的链接关系信息，从而实现进路联锁信息的快速计算并自动生成地铁正线联锁表。联锁表的编制效率被大大提高，并极大地降低出错概率。

关键词: 联锁表, 信号平面布置图, ObjectARX, CAD二次开发