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Embedded System Design for temperature controlled Electrical Appliances Automation and Control Using Microcontroller

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Project Description

The main components used is microcontroller, LCD, temperature sensor LM35 and relay to operates the Ac appliances .In this project we presented a micro controller based temperature controller, a low power and high performance 8051 microcontroller (AT89C52) is used to control the LCD and devices according to the temperature value. It consists of the sensor which measures the temperature of its surrounding and communicates that data to the microcontroller. In determining current temperature and set threshold temperature (set by the user at initial ) such that when the current temperature is low than the threshold value then controller operates the relay to turn ON the device like heater to increase the temperature and vice versa to maintain the temperature constant. Relay cannot operate directly through the microcontroller, an isolator and amplifier is used as a relay driver circuit.

Modules Used
CU01_img
Microcontroller 8051 Family
HMI6_img
Buzzer for Beep Source
HMI3_img
Display Unit (Liquid Crystal Display)
SDU1_img
Relay Driver (Auto Electro Switching) using Optoco
PS01_img
Regulated Power Supply
ADC1_img
Analog to Digital Converter (ADC 808/809)
SN01_img
Temperature Sensor (LM-35)
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