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：6412
DOI：10.15680/IJIRSET.2015.0407161
出版社：S&S Publications
摘要：This paper presents the “Automatic control of home appliances include Room Light and Fan ControllerUsing Microcontroller AT89C51” is a reliable circuit that takes over the task of controlling the room fan and roomlights as well as counting number of persons / visitors in the room very accurately .When somebody enters into theroom then the counter is incremented by one and the light in the room will be switched ON and when any one leavesthe room then the counter is decremented by one. The speed control of fan will depend on PWM signal. It containtemperature sensor that can sense the temperature & gives the control commands for microcontroller .Thenmicrocontroller increases as well as decreases the speed of the fan.. The total number of persons inside the room is alsodisplayed on the liquid crystal display. The microcontroller does the above job. The main objective of control is to getthe desired output and in energy conservation.
关键词：Microcontroller (AT89C51); PWM; LCD; IR Module; LM35
