Description

ABSTRACT

Normally in industries, Temperature should be maintained at a certain level. However, the system used there will be expensive. Even in the home if there is any automatic temperature maintaining system it will be comfortable. Therefore, as Raspberry Pi beginner project, we are implementing this system to teach you to design one autonomous system, which can control the fan speed based on the temperature obtained by the temperature sensor fixed in the home or industry.

BLOCK DIAGRAM

BLOCK DIAGRAM DESCRIPTION

In the above block diagram, the DHT11 sensor is connected with the Raspberry Pi GPIO pins. Then Fan is connected to the system through the relay.The fan is controlled as the PWM to control the speed of the Fan.

 

PROJECT DESCRIPTION

Pulse Width Modulation is used to control the speed of the motor. Here we are centralizing the parameter called temperature, we are using DHT1 sensor which outputs both Temperature and Humidity so that by based on the both Temperature and Humidity, speed of the fan will vary which makes the environment warm. Which can be implemented in any other machines like Air conditioner, Heater etc.

 

HARDWARE REQUIRED

• Raspberry Pi
• Power Adapter
• HDMI to VGA converter (optional, when connecting to Monitor)
• DHT11
• Relay
• Appliance (Fan or AC)

SOFTWARE REQUIRED

• Raspbian Jessie
• SD Card Formatter
• Win32 Disk Imager (or) Etcher

 

LIBRARIES USED

• Rpi.GPIO as GPIO (To access GPIO Pins of Raspberry Pi)
• Time library (For Delay functions)

 

CONCLUSION

Nowadays every smart home systems are implemented by having this kind of applications to make every system autonomous.