期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：7
页码：5719
DOI：10.15680/IJIRSET.2015.0407049
出版社：S&S Publications
摘要：The aim of this paper is to control the speed of dc fan based on room temperature using pulse widthmodulation technique with microcontroller. To get rid of the problem of Obscurity to control temperature in industries,a microcontroller based controller has been proposed. A temperature sensor has been used to measure the temperatureof the room and the speed of the fan is varied according to the room temperature using pulse width modulationtechnique. Controller is used to control the speed of DC Fan and temperature is varied through the Temperature sensorand data is sent to AT89S52 microcontroller using analog to digital converter.The duty cycle has been varied from 0 to100% to control the fan speed depending upon the room temperature, which is displayed on liquid crystal display. Dutycycle values between 25% and 95% allow smooth control of the fan. It is easier, reliable and accurate. The simulationof the system has been done on Proteus Professional Software v 8.0. Hardware implementation has been also done.Theresults of the research and Output waveforms have been investigated. Various design criteria, performancecharacteristics, comparison with different parameters have been plotted in MATLAB software system and othersimulation results have been discussed in detail in this paper.
关键词：Microcontroller; temperature sensor; analog to digital converter; DC Fan; pulse width modulation and speed control
