The temperature controlled fan circuit will automatically control the speed of fan according to the temperature. Working of the circuit arduino based temperature controlled fan. Mar 27, 2017 here we are going to make a temperature controlled dc fan. Aug 10, 2018 in this project, i will show you to design and implement an automatic temperature controlled switch using lm35 temperature sensor. The circuit of automatic temperature controlled fan is build around temperature transducer ad590 followed by operational amplifier lm324. Mar 05, 20 this is a simple automatic temperature controlled fan circuit using ntc thermistor. It uses a few components and easily buys at local markets. Temperature controlled dc fan electronic circuits and. Alternatively, the same circuit can be used for automatic temperature controlled ac power control.
The microcontroller controls the speed of an electric fan. Project report for temperature control system eceprojects. Temperature controlled dc fan using atmega8 microcontroller. Fan speed is varied depending upon the increased in temperature.
Aug 15, 2017 if the temperature exceeds more than 50 deg celsius as per the code, the microcontroller will turn on the relay to start the fan. Design and development of arduino based automatic fan control. This is to certify that the work in the thesis entitled temperature controlled dc fan using microcontroller by ghana shyam soren, bearing roll number 111ee0236, and ram ashish gupta, bearing roll number 111ee0211, is a record of an original research work carried out by them under my. Here we are going to make a temperature controlled dc fan. The key component of this temperature controlled fan circuit is thermistor, which has been used to detect the rise in temperature. When the temperature increases the base current of q1 bc 547 increases which in turn decreases the collector voltage. Android controlled robot 8051 microcontroller, android controlled robot using 8051 and bluetoothour.
Automatic room temperature controlled fan speed controller using pt100 article pdf available in international journal of scientific and engineering research 68. Dht22 sensor is used to sense the room temperature and then we adjust speed of a dc fanmotor accordingly using pwm pulse width modulation. The arduino language is an open source project that creates microcontroller based kit for building digital device and interactive objects that can. The required components are microcontroller, temperature sensor, motor. This project circuit can be used to automatically turn on a switch when a desired temperature is detected. Temperature controlled fan report slideshare temperature controlled fan regulator electronic circuits, 33 thoughts on temperature controlled fan regulator siddhu march 12, 2015 at 7. Using a temperature sensor to control the speed of a motor. Working of temperature controlled dc fan using thermistor. A temperature sensor is used to sense the temperature. With this circuit, an alarm circuit can be added and used effectively in large equipments where. Temperature controlled dc fan is a temperature based fan. It is accomplished by the data communications between arduino, lcd, dht11 sensor module and dc fan that is controlled by using pwm. The wind from the motor fan would blow off the matchstick and switches off itself automatically.
I made this project because i wanted a way to automatically control the speed of a dc fan according to the temperature read by a lm35 sensor. Resistors that are not thermistors are designed to have a as close to 0 as possible, so that their resistance remains nearly. The project report titled temperature based fan speed. Download project code circuit 2 temperature controlled dc. This application is simple just by using temperature sensor lm35 with an arduino kit to control a fan and change its speed with respect to the temperature read by the microcontroller which in this case is the arduino kit. The purpose of this project is creating a cooling system by controlling in a dc fan in a simple way without using microcontrollers or arduino but by using electronic components that its very simple and available. Circuit diagram of the temperaturebased fan speed control and monitoring using arduino.
If the temperature drops below 40 deg celsius as per the code. Temperature controlled fan using arduino use arduino for. The block diagram of the temperature controlled fan using microcontroller is shown in the above figure. The project is a standalone automatic fan speed controller that controls the speed of an electric fan according to our requirement. In this project there is interlock of temperature with the speed of the fan. Project report in pdf format and in doc word format. This fan works when temperature reach into prespecified threshold. Using a temperature sensor to control the speed of a motor using arduino. Temperature controlled fan using 8051 microcontroller.
Thermistor is temperature sensitive resistor, whose resistance changes according to the temperature. Its operation is fully automatic and turns off when the temperature returns normal. The block diagram includes power supply, rst circuit, 8051 microcontroller, lm35 temperature sensor, 8 bit adc, l293d motor driver, dc motor, 7segment display, ip switches. Doc temperature controlled dc fan using thermistor. When sensor system gets hot, this will control speed motor fan is highest. The temperature may changes with time so we need an analog sensor that converts the temperature into the analog voltage. The project temperature controlled fan using arduino is simply fabricated around arduino uno board and temperature sensor lm35. There are two types of thermistor ntc negative temperature coefficient and ptc positive temperature coefficient, we are using a ntc type thermistor. This is a simple automatic temperature controlled fan circuit using ntc thermistor. Above that range the sensor produces a signal and automatically turns on the cooling fan to control the testing temperature. Temperature controlled fan a project report submitted by. Automatic temperature controlled fan circuit using thermistor. Ntc thermistor is a resistor whose resistance decreases as rise in temperature while in ptc it will increase. Temperature controlled fan using arduino starter kit.
This project mainly includes the temperature control of heater, temperature control of surrounding in winter, voltage control i. This project report on control of dc fan is about the dc fan and its control, the report provides the detailed explanation of dc fan, its use and how dc fan work. Temperature sensor detect the temperature and generate voltage according to temperature it senses. Temperature controlled fan report free download as word doc. An arduino program is used to program the microcontroller based on the desired function. Temperature controlled dc fan using thermistor mini project. Temperature controlled fan speed microtronics technologies. The block diagram includes power supply, rst circuit, 8051 microcontroller, lm35 temperature sensor, 8 bit adc, l293d motor driver, dc motor, 7. The main components of this temp control fan circuit is a negative temperature coefficient thermistor ntc which detects the temperature, a comparator which is used to compare the preset temperature value and a relay circuit to drive the fan. I had a few problems with the pwm part mainly because the fan made a disturbing noise so i had to add a simple rc filter. Automatic temperature controller using lm35 bipolar. This is a project demonstrating iot internet of things using platform of arduino. Construction of a temperature controlled fan using a. In this project the main intension is to control the fan by heating the sensor, i.
In this circuit, pin 3 noninverting terminal of op amp 741 is connected with the potentiometer and pin 2 inverting terminal is connected in between of r2 and rt1 thermistor which is making a voltage divider circuit. Circuit diagram of the temperature based fan speed control and monitoring using arduino circuit diagram of the temperature fan speed control and monitoring is shown in fig. The one used in the above circuit diagram was a 50k model. Pdf automatic room temperature controlled fan speed. Project report for temperature control system temperature control system project report is useful for electronics and communication students for developing this project as final year major project. In this circuit, the temperature sensor used is an ntc thermistor, i. It can cool the devices by operating a dc fan when the temperature in its vicinity increases above the preset level. This is to certify that the work in the thesis entitled temperature controlled dc fan using microcontroller by ghana shyam soren, bearing roll number 111ee0236, and ram ashish gupta, bearing roll number. The proposed system temperature controlled fan using microcontroller is used to control the speed of the fan according to the temperature and specify the temperature in the display. In the experiment, i used arduino uno as the main control board, processed the data collected by the dht11 temperature and humidity sensor and controlled the 1602 display. Learn what is adc in arduino before going to this project. In this mini project, we are going to control the speed of the dc fan automatically as the surrounding temperature changes.
Sep 09, 20 project report for temperature control system temperature control system project report is useful for electronics and communication students for developing this project as final year major project. This temperature controlled fan circuit is highly efficient as it uses thyristors for power control. Use the arduino kit in my hand to make a smart fan that automatically turns on or off and automatically adjusts to temperature. Basically the circuit switches on a toy motor fan connected to the motor driver whenever heat is applied to the temperature sensor unit using say a burning matchstick. In this tutorial, we are interfacing lm35 temperature sensor with the arduino uno.
This paper elucidates how the autonomous speed control of fan is. Accurate room temperature controller project download project documentsynopsis the main purpose of this digital temperature controller is to control the temperature of any device like ac or any other electronic devices whose temperature keeps fluctuating and thus requires a. This project will display the configuration, development, advancement, control and assessment of an automatic switching speed electric fan. Once calibrated against the thermistor equation, it is possible to electronically determine the. I have chosen to make a temperature controlled fan for my final project this semester. Accurate room temperature controller project download project documentsynopsis the main purpose of this digital temperature controller is to control the temperature of any device like ac or any other electronic devices whose temperature keeps fluctuating and thus requires a constant watch on the device. Automatic temperature controlled fan using thermistor. Temperature controlled dc fan using microcontroller ethesis. It consists of temperature sensing unit, lcd module, switching device, driver, a fan and heater.
Temperature based fan speed control and monitoring using. Arduino based temperature controlled fan engineering projects. In this project, microcontroller forms the processing part, which firstly. In this arduino based project, we are going to control dc fan speed according to the room temperature and show these parameter changes on a 16x2 lcd display. Temperature based fan speed controller project arduino uno.
A brief note on temperature controlled switch as the name suggests, a temperature controlled switch. The arduino language is an open source project that creates. Room temperature based fan speed control system using. The system will get the temperature from the temperature sensor and it will control the speed according to the temperature, set by the user. Temperature controlled fan a project report submitted by peeyush pashine2011h140033h pravesh tamrakar2011h140036h sri krishna yadav2011h140031h j ganesh2011h140032h m. The speed of fan increases with the increase in temperature and vice versa and the temperature sensed by temperature sensor on the lcd. I experimented with different models from 22k to 100k and all worked fine after replacing the trimmer pot. Arduino nano compare output voltage of temperature sensor and operate the fan. The analog voltage then converted to digital data so arduino can process it. Description th1, the 50k thermistor, is a standard type. Temperature based fan speed controller 3 certificate of approval the project report titled temperature based fan speed controller prepared by biman kr pal, roll no. Temperature controlled dc fan using microcontroller.
Pdf temperature based speed control of fan using arduino. If the temperature exceeds more than 50 deg celsius as per the code, the microcontroller will turn on the relay to start the fan. The aim of the project dc fan is to control a 12v dc fan using a power electronic circuit works on the operation of thermistor. Automatic temperature controlled fan electronics project. Temperature controlled fan using arduino hobby project. Hello friends, in this post we are going to make one simple mini project which is temperature controlled dc fan using a thermistor.
Ad590 is a temperature transducer, change temperature into corresponding voltage. As we are using pwm pin, the speed of fan is variable according to temperature. Circuit diagram of the temperature fan speed control and monitoring is shown in fig. I have decided to do this project on this because i thought it would be interesting and fun to figure out. The projects are good example of embedded system basically designed using closedlooped feedback control system. The duty cycle is made to vary according to the room temperature and the fan speed is controlled accordingly. Automatic temperature controlled fan full circuit diagram. In some cases, a temperature controlled fan system is a part of a our home air conditioning system such as in blowers, heat exhauster, room cooler etc. In this project arduino uno forms the processing part. Oct, 2011 this project report on control of dc fan is about the dc fan and its control, the report provides the detailed explanation of dc fan, its use and how dc fan work. C this temperature controlled fan with some modifications can further be used in other heater circuits to maintain the constant temperature of the device. After hours of troubleshooting this circuit i finally. When the temperature increases the base current of q1 bc 547 increases which in turn decreases the collector voltage of the same transistor.
Room temperature based fan speed control system using pulse. Mar 11, 2017 hello friends, in this post we are going to make one simple mini project which is temperature controlled dc fan using a thermistor. Here is a simple circuit based on two transistors that can be used to control the speed of a 12 v dc fan depending on the temperature. Download as docx, pdf, txt or read online from scribd.
This paper elucidates how the autonomous speed control of fan is done based on data from the temperature sensor. Arduino lm35 temperature sensor project maxphi lab. Other function is control the speed of a fan with respect of temperature set. May 26, 2017 in this arduino based project, we are going to control dc fan speed according to the room temperature and show these parameter changes on a 16. Sep 12, 2018 this is a project demonstrating iot internet of things using platform of arduino. The output of transducer is given to pin 2 of ic 2 lm324. Dht22 sensor is used to sense the room temperature and then we adjust speed of a dc fan motor accordingly using pwm pulse width modulation. Temperature based fan speed control and monitoring using arduino. We have used a triac and firing cirucit in this project. This project is about control of temperature in values of 23 and 25 grades and control for hysteresis using dht22 and arduino 101. Pwm is a technique by using which we can control voltage. Temperature controlled fan using arduino engineering projects.