DOI: https://doi.org/10.15802/stp2019/196015

IMPROVEMENT OF MICROPROCESSOR COMPLEX SCHEME USING MICROPROCESSOR HARDWARE COMPLEX

K. I. Yashchuk, S. S. Petrovsky

Abstract


Purpose. During the maintenance of equipment for overheated axleboxes detecting, the problem of the time consumption for manual measurement of the trackside chambers temperature appeared. This is impractical in the era of using electronic programmable devices. The purpose of this article is to improve the heating control scheme for trackside chambers of the microprocessor hardware complex, namely the subunit of the microprocessor thermostat, which is designed to maintain a stable temperature inside the trackside chambers. Methodology. The studies are based on statistical data obtained as a result of the operation of overheated axleboxes detection equipment. In the article the methods of circuit simulation to obtain a microelectronic scheme have been applied. Findings. The work has considered the problem of manual servicing overheated axlebox detection equipment. The necessity of automation measurement procedure, processing and transmission of data on the temperature of the trackside chamber has been determined. An electronic scheme based on a microcontroller has been developed, which allows you to react in case of appearance of possible temperature changes outside the specified limits. The performed calculations show that the proposed scheme significantly reduces the time for servicing the equipment and eliminates the human factor, which can influence the reliability of the readings during the temperature measuring. Originality. For the first time, an improved scheme for controlling the heating of trackside chambers based on a microcontroller has been proposed, which allows automatical adjusting and maintains the temperature in the trackside chamber from 21 to 40°C, and gives the alarm signal when the thermistor fails and temperature fluctuates outside the set limits. Practical value. The heating control scheme applying allows automation of temperature measurements inside the trackside chamber. This significantly reduces the maintenance time for overheated axlebox detection equipment, since it completely eliminates both the necessity for manual check of the temperature with a mercury thermometer between trains traffic and the necessity for manual adjusting the temperature in case of its discrepancy to the standards.


Keywords


automation; overheated axlebox; heating; trackside chambers

References


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