The article presents a mathematical model assessing the reliability of rail traffic control systems with a mounted Peltier cell. The semiconductor element will be used for operating electronic components that are in the trackside equipment. In the prepared model, Markow processes were used to describe the states occurring between individual components of the RTC System. Simulation tests were mainly based on determining the average time of component failure. The presented results were carried out for 1,000, 2,000 and 3,000 rail vehicle crossings over the railway tracks equipped with RTC Systems. At the very end of the article the conclusions resulting from computer simulations were presented.

The article presents the Peltier cell control system devel-oped by the authors. Due to the non-linear dependence of the cell's efficiency on the current, fuzzy logic was used to determine the control value. In the following parts of the article the actual characteristics of the Peltier cells, the method of determining the control current value (fuzzy controller synthesis). The controller of fuzzy logic and its relation to traditional control in a closed system and obtained results have been presented. The FUDGE software from Motorola was used to implement fuzzy logic. The control algorithm presented in the article will be used to develop cell control system that enables optimization of the Peltier cell control process.

The article discusses the system for measuring Peltier thermoelectric modules using the Arduino platform based on the Atmega328P microcontroller. The results of such measurements for the TEC1-12705 series of thermoelectric cells are also presented. Both for cooling mode operation (Peltier effect) and for working as a thermoenergy generator (Sebeecka effect)..

The article discusses low-power brushless motors and control modules that are used, among others, in trucks and buses. Also presented are methods of controlling brushless DC motors. The own low power controller was also implemented, enabling smooth start-up and control of the engine speed up to 3,000 revolutions and supply voltage up to 32V DC. This article also presents the results of the measurements of BLDC motor control used in automotive vehicles, mainly in trucks and buses.

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