DESIGN AND SIMULATION OF TEMPERATURE CONTROL OF CHAMBER BASED ON AUTOMATIC FAN SPEED CONTROL
DESIGN AND SIMULATION OF
TEMPERATURE CONTROL OF CHAMBER
BASED ON AUTOMATIC FAN SPEED
CONTROL
Gaurav S. Ashara1, Dipesh S. Vyas2
1
Research Scholar, Instrumentation & Control Department, AITS, Rajkot, India.
2
Assistant Professor, Instrumentation & Control Department, AITS, Rajkot, India.
Abstract - This paper presents the design and implement of microcontroller based temperature control using electric fan.
The electric fan automatically switches the speed according to change inner temperature of the box. The system contain LM35 temperature sensor, 89C51 microcontroller, fan interface circuit and the box. This inner temperature is compared with the set value by the user and if the temperature above the set values the fan ON as per the requirement and if the temperature below the set values the fan OFF automatic.
Keywords - LM35, 89C51, ADC, box, fan.
and generate signal to control circuit. This control circuit control the fan speed according to signal comes from the microcontroller. Control system can be classified as either open loop or closed loop. In open loop system output has no influence of the input action. Also open loop does not having feedback path. While closed loop system has a feedback path from the output of the controlled process to the input of the control system. So, closed loop system monitor the temperature and control the fan by switching to appropriate speed. III SYSTEM ARCHITECTURE
I INTRODUCTION
Generally, electronic device produce more heat, so that heat should be reduced in order to protect the device. There are many ways to reduce heat. One way is to switch on the fan spontaneously. Here describe a circuit that automatically switches the fan when it detects the temperature inside the box greater than its threshold value. The system made use of:
AT89C51 Microcontroller, Temperature sensor (LM35),
Analog to Digital Converter (ADC) [1]. PID controllers have been used for industrial processes because of their simplicity and robustness.
A.
TEMPERATURE CONTROL OF CHAMBER
BASED ON AUTOMATIC FAN SPEED
CONTROL
Gaurav S. Ashara1, Dipesh S. Vyas2
1
Research Scholar, Instrumentation & Control Department, AITS, Rajkot, India.
2
Assistant Professor, Instrumentation & Control Department, AITS, Rajkot, India.
Abstract - This paper presents the design and implement of microcontroller based temperature control using electric fan.
The electric fan automatically switches the speed according to change inner temperature of the box. The system contain LM35 temperature sensor, 89C51 microcontroller, fan interface circuit and the box. This inner temperature is compared with the set value by the user and if the temperature above the set values the fan ON as per the requirement and if the temperature below the set values the fan OFF automatic.
Keywords - LM35, 89C51, ADC, box, fan.
and generate signal to control circuit. This control circuit control the fan speed according to signal comes from the microcontroller. Control system can be classified as either open loop or closed loop. In open loop system output has no influence of the input action. Also open loop does not having feedback path. While closed loop system has a feedback path from the output of the controlled process to the input of the control system. So, closed loop system monitor the temperature and control the fan by switching to appropriate speed. III SYSTEM ARCHITECTURE
I INTRODUCTION
Generally, electronic device produce more heat, so that heat should be reduced in order to protect the device. There are many ways to reduce heat. One way is to switch on the fan spontaneously. Here describe a circuit that automatically switches the fan when it detects the temperature inside the box greater than its threshold value. The system made use of:
AT89C51 Microcontroller, Temperature sensor (LM35),
Analog to Digital Converter (ADC) [1]. PID controllers have been used for industrial processes because of their simplicity and robustness.
A.