Abstract
The paper is about four channel microprocessor system for temperature measurement during static and running mode. It incorporates microcontroller type PIC18F452 and employs sensors which convert temperature into voltage. In addition it features optional connection to a PC for storing and processing amassed data. Based on this system a new method is proposed for analysing overheating and cooling of individual parts of asynchronous electric machines. A set of differential equations is derived which later on are processed by MATHCAD software. Obtained results can be presented in tabular or graphic form. The outcome of resolving this task is in the relative ease with which it is possible to establish overheat of various machine parts. Similarly, such approach could be applied with other types of electric machines.
Highlights
INTRODUCTIONBoth circuits and equipment for temperature measurement find wide range of application in modern industry which in turn necessitates the design of such devices featuring an ever increasing number of function
Keywords - Microprocessor, Microcontroller, Asynchronous Electric Machine, temperature sensor. Both circuits and equipment for temperature measurement find wide range of application in modern industry which in turn necessitates the design of such devices featuring an ever increasing number of function
With operation mode S4 which is usual for asynchronous machines start-off losses are to be taken into account. This task entails the set-up of a system of four differential equations and is further to be solved by means of MATHCAD
Summary
Both circuits and equipment for temperature measurement find wide range of application in modern industry which in turn necessitates the design of such devices featuring an ever increasing number of function. Using sensor type LM35 a multichannel microprocessor system has been developed, capable of simultaneous measuring of four temperatures
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