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Designing automatic fan speed controller

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Reference no: EM131301535

Designing automatic fan speed controller based on the temperature variation in the room using Micro controller

Abstract: The electronic Circuit used to control the speed of fan based on temperature variation in the room and also it displays the room temperature. The circuit uses AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8K bytes of Flash programmable and erasable read only memory (PEROM).

Please write logic, Circuit Diagram and Code 

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Introduction: The room temperature varies in the room due to several reasons (Such as more number of persons entering in a room) there is need to increase the speed of the fan manually. This circuit automatically controls the speed of the fan using micro controller. The circuit uses LM35 sensor to sense the temperature and gives the analog electrical signal as an output. This signal is converted to digital using Analog-to-Digital (ADC) converter and provided to microcontroller for further accessing. The microcontroller 89C52 performs the comparison of current temperature and set temperature as per the preset logic of program. The result is displayed on LCD display. microcontroller does the necessary operation to drive the circuit to obtain the desired speed of the fan.

Reference no: EM131301535

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