Temperature Controlled Fan Project
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The proposed project is a temperature-controlled fan using a microcontroller that adjusts fan speed based on environmental temperature. Key components include an ATmega8 microcontroller, LM35 temperature sensor, and L293D motor driver, with specifications for fan operation between 15°C and 35°C. The project aims to automate fan control to enhance energy efficiency in various applications, including home appliances and computers.
Temperature Controlled Fan Project
- 3. Introduction
- 4. The proposed system i.e. temperature controlled fan using microcontroller will be used to control the speed of the fan according to the temperature and specify the temperature in the display. AIM
- 5. • Domain: Embedded Systems • Application Area: Automation • Purpose of Work: Conversion of a manual fan to an automatic speed controlled fan according to the temperature
- 7. Required Components • ATmega8 • Temperature sensor (LM35) • L293D motor driver • Crystal Oscillator • DC motor/fan • LCD • Power supply
- 8. Temperature Sensor: LM35 The o/p of this temperature sensor is linearly proportional to the Celsius scale. This IC doesn’t need any external calibration to give accuracies. The main function of the temperature sensor in the proposed system is to detect the temperature of external environment of fan.
- 9. ATmega8 ATmega8 microcontroller has 23 programmable input/output (I/O) pins which can be used for interfacing with external world. It is possible to configure them as input or output by setting a particular register value through programming. This IC comes in 3 different packages, but we are using the popular 28-Pin PDIP package (Atmega8-16PU). The 23 I/O ports of ATmega8 are organised into 3 groups: Port B (PB0 to PB7) Port C (PC0 to PC6) Port D (PD0 to PD7).
- 11. Crystal Oscillator A crystal oscillator is an oscillator circuit, which uses the mechanical resonance of a vibrating to create an electrical signal with a very precise frequency. The crystal oscillator is used in the system to provide clock signal to the microcontroller
- 12. L293D L293D is a 16 pin IC, with eight pins, on each side, dedicated to the controlling of a motor. There are 2 INPUT pins, 2 OUTPUT pins and 1 ENABLE pin for each motor.
- 13. Properties of Temperature Controlled Fan • When the temperature surpasses 35 ᵒ C then fan should run at max speed. • When the temperature drops below 15 ᵒ C then fan should be at min speed. • The fan speed should change according to the range of temperature from 15 ᵒ C to 35 ᵒC,
- 15. • Replace the manually operated fans by automatic temperature sensor fans • The applications of the temperature controlled fan includes where the consumption of power has to be controlled such as firms, institutes, organizations, home appliance, in computers to cool the processor. • Furthermore this project can be enhanced by interfacing it with air conditioners.
- 16. References
- 18. SUMMARY
- 19. THE END Prepared By:- Aditya Ratnaparkhi Chaitanya Pawa Rajat Dhawan Shivam Chhabra