Arduino Temperature Controlled Fan for Energy Conservation

Abstract

INTRODUCTION

Technology affects people all over the world, both positively and negatively. Advances in technology have brought us online banking, smart cars, smart TVs, and lightning fast computers. Such advances cannot be achieved without the use of electricity. Since the very old days, electricity has always been a necessity for everyone. But such things will not last forever, it will also run out. This paper offers a new method in conserving electrical energy with the use of Arduino temperature and humidity sensor, and a developed application (CMDF) that will serve as a remote control to the device to make it more accessible and easier to use.

METHODS

The device consists of three sections. One senses the temperature by using humidity and temperature sensor namely DHT22. Second section reads the DHT22 sensor modules output and extracts temperature value into a suitable number in Celsius scale and control the fan speed by using PWM. The last part of the system shows humidity and temperature on LCD and fan driver. The CMDF application made by the researchers will be the one responsible to control and monitor the temperature of the surroundings as the numerical value and the fan status was written on it. The devise was used for one month and compared the electric bill with the previous month to test how much energy was conserved.

RESULTS

The difference in temperature monitored by DHT11 sensor and thermometer indicates that the sensor was accurate. The results also indicate that the energy consumption of the fan with the device has lesser usage of electrical energy than the fan without the device. Computed values resulted from the experimentation indicates that the device has a high percentage of accuracy and proven to conserve electricity.

DISCUSSIONS

Based on the results the device is effective in conserving electrical energy as observed in the electric consumption of the house. in terms of the accuracy of the device, there is not much difference in temperature between the wall thermometer and the temperature in the application as there was only an average of 0.59 difference. Other observations also show that the use of the device doesn't affect the performance of the appliance where it is attached.