Pressure Monitoring and Control System Using Microcontroller

Abstract

This project is developed for the users to control room temperature automatically. There are two fans (one cooling and one heating) in the room. The heart of the circuit is microcontroller PIC16F73. The microcontroller has three ports that can be used for Input and output. The signal from a temperature sensor is given as input to pin no. RB0 of the microcontroller. The output is derived at RB6 and RB7 of the microcontroller. According to the temperature variation, the microcontroller sends signal to the output pins. The output of the microcontroller is given to driver section and the driver section operates two relays. According to the input, the relays are operated and cooling and heating fans are controlled accordingly. The status of the temperature is displayed in a LCD display. Thus the room can be kept at constant temperature. Since microcontroller is used in this project, the operations are very accurate.

Existing System

Proposed System

Architecture

BLOCK DIAGRAM