Interlocking Chart Production System by Rough Sketch Data Input

Abstract

The figure and the table, that conditions of signals and switches and others needed for train traffic operation are summarized, are called the interlocking chart. Untill now, the production of interlocking chart is carried out by the expert who has long time experience. Great labor and time are necessary to produce interlocking chart.
In the case that interlocking chart is producted by using a computer, input of data and the calculation of interlocking table corresponding to it are important. According to an experimental system that is described in this paper for producting interlocking chart, the interlocking chart is obtained when rough sketch is input from a screen of a display. The rough sketch shows connections of lines and various kinds apparatus. At first, the system generates the data of the tree structure type, called the route search tree, from the rough sketch data that was already input. The calculation of interlocking table is carried out on the basis of the route search tree that was generated. Usually the route of train needed for interlocking table is given beforehand. However, in this system the route is requested from the route search tree to decrease the trouble of input. The search of locking condition and others to each route are carried out, and the interlocking table is summarized. Finally, the interlocking chart that consists of figure and table is output.