Temperature controlled fan report free download as word doc. This paper elucidates how the autonomous speed control of fan is done based on data from the temperature sensor. The key component of this temperature controlled fan circuit is thermistor, which has been used to detect the rise in temperature. Thermistor is temperature sensitive resistor, whose resistance changes according to the temperature. The duty cycle is made to vary according to the room temperature and the fan speed is controlled accordingly. A temperature sensor is used to sense the temperature. The microcontroller uses the hex file to execute the program. Temperature sensor hub and fan controller data sheet adt7470 rev. If the temperature is greater than or equal to 35c, then the dc fan will run at full speed 100% duty cycle. Close mr manual reset l 150 f 30 ordering options temperature code the temperature code is required to set up or choose the unique part number for your application requirements.
Design and development of arduino based automatic fan control. The ceiling fans objectively build to control the room temperature to. The temperature controlled fan circuit will automatically control the speed of fan according to the temperature. There are two types of thermistor ntc negative temperature coefficient and ptc positive temperature coefficient, we are using a ntc type thermistor. Pdf in present scenario, availability of electricity is found to reach crucial stage. The developed system provides an environment in which no user needed to. The analogue signal is converted into digital format by the adc.
This further venture of a smart electric fans than before that utilizing. Design of an automatic fan speed controlling system. Pdf temperature controlled fan using iot international journal. Temperature based fan speed control and monitoring using arduino. Circuit diagram of automatic temperature controlled fan using thermistor. Similarly if the temperature is between 30c and 35c, then the dc fan will run at a medium speed 60% duty cycle. Temperature and relative humidity management are sometimes referred to as maintaining the cold chain during postharvest handling and marketing. Temperature controlled fan using arduino hobby project. This project is a standalone automatic fan speed controller. Automatic room temperature controlled fan speed controller is one of them.
And last part of system shows humidity and temperature on lcd and fan driver. Ntc thermistor is a resistor whose resistance decreases as rise in temperature while in ptc it will increase. E document feedback information furnished by analog devices is believed to be accurate and reliable. This is to certify that the work in the thesis entitled temperature controlled dc fan using. How to autocontrol your pcs fans for cool, quiet operation.
The microcontroller drives transistor to control the fan speed. If the temperature is between 25c and 30c, then the dc fan will start working at low speed 30% duty cycle. Automatic room temperature controlled fan using arduino. Operating temperature nominal open temperature operating temperature l limit f fan temp. This project uses a raspberry pi and bmp 180 sensor to record temperature, altitude, atmospheric pressure, and control a fan to manage heat.
Room temperature based fan speed control system using. Second section reads the dht11 sensor modules output and extracts temperature value into a suitable number in celsius scale and control the fan speed by using pwm. First compile the program in arduino and then hex file will be generated that hex file. In this work, arduino along with temperature sensor is used. Temperature controlled fan and data recorder hackster. Temperature controlled dc fan using microcontroller ethesis. The speed of fan increases with the increase in temperature and vice versa and the temperature sensed by temperature sensor on the lcd. Pdf temperature based speed control of fan using arduino. Circuit diagram of the temperature fan speed control and monitoring is shown in fig. Temperature and chapter 6 temperature and relative humidity control page 6. The micro controller on arduino drives the motor driver to control the fan and internet of. One senses the temperature by using humidity and temperature sensor namely dht11. Pdf automatic room temperature controlled fan speed.
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