Microcontroller Base Automatic Temperature control System

Abstract

First of all according to the collected information about Temperature control System then total circuit design has been completed using Proteus software. Infrared sensor used in this project. Which detect Temperature? It is used as a measure of Temperature of a mechanical component. Produce analog voltage sensing the present Temperature at its input. AVR ATMEGA32 PU Microcontroller was programmed with programming language C in code vision AVR compiler. Microcontroller calculating this value transmitted it to a LCD to display the RPM. JHD 162D Liquid crystal display (LCD) is a thin, flat electronic visual display that uses the light modulating properties of liquid crystals (LCs).They are usually more compact, lightweight, portable, less expensive, more reliable, and easier on the eyes. This is a basic 16 character by 2 line display with a snazzy green background with white characters. 12 V Transformer is used as its main power supply. In this transformer primary voltage is 220 V and in secondary coil voltage is 12 V AC. LM7805 & LM7812 voltage converter used to convert voltage (12 V and 5 V). A switch is used to start the system