СИНТЕЗ УСТРОЙСТВ УПРАВЛЕНИЯ НАПОЛЬНЫМ ТЕХНОЛОГИЧЕСКИМ ОБОРУДОВАНИЕМ ЖЕЛЕЗНОДОРОЖНОЙ АВТОМАТИКИ С ОБНАРУЖЕНИЕМ НЕИСПРАВНОСТЕЙ НА ПРОГРАММИРУЕМЫХ ЛОГИЧЕСКИХ ИНТЕГРАЛЬНЫХ СХЕМАХ

Abstract

The paper describes features of synthesis of control devices for wayside technological equipment of signalling, interlocking and block systems on field-programmable gate array (FPGA). In the work the authors consider the simplest example of implementation of a shunting light signal control circuit that demonstrates the synthesis technique. The most important stage is the definition of all interacting objects, input and output data, states and conditions of transition between states. Based on this initial information, a transition graph is formed. Next, a functional basis for implementation is selected (in this case, these are FPGA), and then a coding method to protect the automaton in operation is determined. In order to implement reliable and secure devices, well-known methods are used to ensure these properties for technical objects. The technique allows not only synthesizing control devices for automation objects, but also implementing software tools for their operation and test diagnostics.