Abstract
The proof of the positive and negative aspects of various types of optical systems that have been introduced by the railway network. Special attention is paid to special LED lamps and their power driver modernization. Modelling of the power driver circuit in the SIMULINK environment has been finished
Highlights
Introduction ofLED heads have been started recently, but it turned out that they have many shortcomings: – No interchangeability
If a LED lamp fails, one must have sufficient amount of different LED lamps. It is not allowed in a railway to change the broken LED lights with lamps from different manufacturers. – Reflection effect
LED lamps, when installed in signals, may present varied visibility, because the optical axes of signals are not parallel, a feature arising from the technological specifics. – Flashing of engine-drivers
Summary
It can be solved by using a pulse control scheme (Figure 2). The main signalling device in a railway transport is a signal — an optical device that signals with one or several coloured lights during the day and night. Certain signal readings transmit orders and instructions regarding a permission or prohibition for trains and manoeuvre stocks on certain sections or in a station [1]. Current trends of development of railway automated systems allow considerable expansion of the functional features of systems
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