Railway domain is a safety critical domain, where safety is given utmost importance. The most important part of the railways to carry out operations like safe movement of trains and communications between different entities is “signalling”. The railway signalling is governed by a concept called “interlocking”. Interlocking systems are implemented in different technology, one of them are information technology. Such systems are called “computer based interlocking systems”. This article presents the MOR-3 system that is economical and high performance computer based interlocking system produced by Z.A. KOMBUD S.A.
MOR-3 COMPUTER-BASED INTERLOCKING SYSTEM
Abstract:
Railways are a field of activity where ensuring safety is of paramount importance. A significant element of this structure, enabling the safe movement of trains, is railway traffic control equipment, in particular interlocking systems. These devices are implemented using various technologies, one of which is computer technology. We then refer to them as computer-based interlocking systems.
This article presents the MOR-3 system, produced by Zakłady Automatyki KOMBUD S.A., which is an economical computer-based interlocking system.
1. INTRODUCTION
Relay technology used to form logic circuits in railway interlocking systems is being replaced by computer technology.
Field inputs are collected using digital input cards and outputs are provided using digital output cards. Processing is performed by a processor where software variables are evaluated using interlocking equations, which are now in digitized form, either as algorithms, boolean equations, or state charts in the processor memory. These algorithms, now executed by the processing unit, take appropriate action. One example of such a solution is the MOR-3 system, described in this article.
2. GENERAL CHARACTERISTIC OF THE SYSTEM
The MOR-3 computerized station equipment system fulfills station interlocking system functions and occupies a central position in the railway signaling equipment system at the traffic control post. Together with cooperating systems and equipment, it provides efficient and safe train traffic and shunting control. The position of the MOR-3 in the traffic control equipment system is shown in Figure 1. (…)
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