This project aims to study the introduction of an PIC16f887 microcontroller is used to control the motor speed by the speed changes according to the temperature to increase the efficiency of the fan.In the automatic temperature adjustment Have the equipment and programs are important PIC16F887 microcontroller ICS relay LM35 temperature program PICkit2TM program MPLAB IDE and working of the motor change speed depending on the temperature mode is set to 2, this is a normal design and automatic modules auto by sensors measure the temperature of the incoming signal, with control unit? The control unit will work according to a defined program, and there is a satisfaction questionnaire, in the work of the fan based on temperature. By having a sample of employees with regular government service Technology Center, A 20-man building, Chaeng Wattana.The fan motor will spin without found that the No. 1 speed when the temperature is between 23-25.9 degrees Celsius. The fan is rotating at a speed of BUR 2 temperature sensor located between 26-29.9 degrees Celsius.The fan motor will rotate at the speed round # 3 when the temperature sensor is located between 30 degrees Celsius or more.And when the temperature sensor. Less than 23 degrees Celsius. Fan motor stopped working fan's job performance compared to the temperature, then found that when opened, fans, fan work in the average period of 10 minutes and then measure the temperature in the distance of 3 meters from the usual temperature found to 26 degrees Celsius. After the test, the temperature is reduced by 1.4 degrees Celsius and the average from a satisfaction questionnaire, in the work of the fan based on temperature. Found with the highest average include working conditions, and low on features.In this work.
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