Temperature based fan speed control & monitoring using
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The project involves creating a temperature-based fan speed control system using Arduino to reduce power consumption and assist disabled individuals. It utilizes components like the LM35 temperature sensor, LCD display, and DC motor to monitor and adjust fan speed according to ambient temperature. Future applications may include integration with other environmental controls and remote monitoring capabilities.
Temperature based fan speed control & monitoring using
- 1. Project Associates : JAGANNATH DUTTA (Roll No. 28100314029) SUMAN MUKHERJEE (Roll No. 28100314059) SUBHAM GHOSH (Roll No. 28100314049) TEMPERATURE BASED FAN SPEED CONTROL & MONITORING USING ARDUINO Under the Supervision of Mrs. D. RAY Asst. Prof. in Dept. of E.C.E
- 2. OBJECTIVE OF PROJECT Our object of making this project is for reducing the power consumption. And also to assist people who are disabled and are unable to control the speed of fan. It may also be used for monitoring changes in environment. In near future, it can also be used in different industries and electronic devices.
- 3. CONTENTS: INTRODUCTION BLOCK DIAGRAM PROGRAMMING HARDWARE EQUIPMENTS ARDUINO UNO TEMPERATURE SENSOR LM35 LCD 16X2 DISPLAY DC MOTOR CIRCUIT DIAGRAM CIRCUIT DISCRIPTION APPLICATIONS ADVANTAGES FUTURE SCOPE CONCLUTION
- 4. INTRODUCTION A simple introduction about the temperature controller circuit. This circuit project is mainly used for indicating temperature , controlling temperature. Microprocessor forms the processing part. In temperature controller circuit, there are two parts consisting of LM 35 interface with ARDUINO UNO. LCD & FAN interface with ARDUINO UNO. The hardware circuit of temperature controller need the programming.
- 5. BLOCK DIAGRAM FAN (9V DC MOTOR) LM35 A R D U I N O UNO LCD DISPLAY (16X2)
- 6. PROGRAMMING
- 7. HARD WARE EQUIPMENTS Arduino UNO Temperature Sensor LM 35 LCD Display LED 16 X 2 Display DC Motor 9V Battery 9V Resistor Potentiometer Capacitor Transistor Diode
- 8. ARDUINO UNO The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button.
- 9. TEMPERATURE SENSOR(LM35) The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 does not require any external calibration or trimming to provide typical accuracies of ±1⁄4˚Cat room temperature.
- 10. LCD DISPLAY 16 X 2 LCD (Liquid Crystal Display) screen is an electronic display module and find a wide range of applications. A 16x2 LCD display is very basic module and is very commonly used in various devices and circuits. A 16x2 LCD means it can display 16 characters per line and there are 2 such lines. Two registers in use:- command register and data register.
- 11. DC- MOTOR A DC motor is an electric motor that runs on direct current (DC) electricity. In any electric motor, operation is based on simple electromagnetism. A simple 2-pole DC electric motor (here red represents a magnet or winding with a "North" polarization, while green represents a magnet or winding with a "South" polarization).
- 12. OTHERS COMPONENTS 1k Resistor 9V Battery 1K Potentiometer capacitor-10uF Diode-1N4007 Transistor-BD139 LED
- 13. CIRCUIT DIAGRAM
- 14. CIRCUIT DESCRIPTION As we have a look into the circuit diagram, we have seen that the 16x2 LCD panel indicates the output result to show. The 1k potentiometer is connected to the 3 no pin of that LCD panel to control the intensity of brightness. The main portion of the LCD panel is connected to the Arduino Board with pin 2,3,4,5,6 and 7 of UNO. The pin 8 of Arduino is connected to the LED indicator to indicate the peak level of temperature and fan speed
- 15. The pin 11 is connected to the capacitor which controls the fan speed intensity. The capacitor discharges through the emitter of transistor BD139. The transistor get biased through this capacitor and then controls the fan speed. The diode IN4007 acts as a switch to stop the fan below a certain cut-off level. The temperature input is given to the pin A0 of Arduino from pin 2 of LM35. The diode is used to protect the inductive instability . Contd..
- 16. Contd. Voltage Equation of the DC Motor : Input Voltage provided to the motor armature can perform the following two tasks: Obtain control on Back E.M.F Eb of the Motor. Provide supply to the Ohmic IaRa drop. V = Eb + IaRa ………………….(1) Where Eb = Back E.M.F IaRa = Armature Current X Armature Resistance This is called “Voltage Equation of the DC Motor”.
- 17. Contd. Total torque developed of a DC machine is : This torque equation of DC motor can be further simplified as:
- 18. Contd.
- 19. Regulation of Speed by PWM One simple and easy way to control the speed of a motor is to regulate the amount of voltage across its terminals and this can be achieved using “Pulse Width Modulation” or PWM. Using PWM enables control of the current in the windings and in turn the output torque. The switching transistor has a much reduced power dissipation giving it a linear type of control which results in better speed stability.
- 20. Contd. The Arduino provides the PWM duty cycle as per the temperature. The capacitor value provides the respective charging and discharging capability. The fan speed intensity thus controlled by the capacitance and speed is controlled by the PWM duty cycle.
- 22. Personal computers Exhaust fans in large hotels Washing machines CD and DVD players The circuit can be used for Car Engine to reduce the heat. This project can be used in Home. This project can be used in Industry. This will help in saving the energy / electricity APPLICATION
- 23. It is very economical and easy to handle by the user. Speed varies automatically, so that it controls the speed without using it manually. It is help full to disabled People. It is very easy to install in offices, houses etc. Save energy by slowing down its speed in low temperature. ADVANTAGES
- 24. The project will concentrate on electric standing fan rather than other type of fan such as ceiling fan We can monitor more parameters like humidity, light and at the same time control them. We can send this data to a remote location using mobile or internet. We can draw graphs of variations in these parameters using computer. When temperature exceeds the limit, a call will be dialed to the respective given number by an automatic Dialer system. FUTURE SCOPE
- 25. This paper elaborates the design and construction of fan speed control system to control the room temperature. The temperature sensor was carefully chosen to gauge the room temperature. Moreover, the fan speed will increase automatically if the temperature room is increased. As conclusion, the system which designed in this work was perform very well, for any temperature change and can be classified as automatic control. CONCLUTION