Shock proof electrical appliances control system for physically challenged using AT89S52 MCU (Electronics project)

Shock proof electrical appliances control system for physically challenged using AT89S52 MCU

TECHNICAL SPECIFICATION

Title of the project                  :           Shock proof electrical appliances control system for

                                                             physically challenged using AT89S52 MCU

Domain                                   :           Embedded, Wireless domain.

Software                                 :           C, Keil, Proload

Power Supply                          :           +5V, 500mA Regulated Power Supply

Communication Device          :           IR Communication

Display                                    :           16x2 LCD

Traic Driver                             :           BT136

MOC3021                               :           1

Crystal                                     :           11.0592MHz

ABSTRACT:

            The project is standalone project to control the AC loads in various places without causing any physical strain to user. So, this project is useful for physically challenged person using one of the advanced technologies such as IR. Controlling electrical appliances through IR is interesting and very useful application. This system is widely used in industries, offices, Banks, hotels, hospitals, and display boards. This is an interesting project built with IR and AT89S52 MCU. By using this project one can control AC appliances such as fan/bulb any electrical appliances using IR communication.

            IR rays are transmitted through remote and these rays are received by a receiver. Here, in this project we are using AT89S52 MCU to control AC loads we use traic based driver circuit to control the loads, which is very much helpful for physically challenged person.

            This project has an IR transmitter and a receiver. Whenever a person waves a hand this device gets detected, the IR light will be reflected, and received by the IR receiver. This sends a signal to microcontroller and it turns ON the Ac load without physical strain.

The project is build around AT89S52.It is used for switching the load equipment using IR communication to control AC loads by using a combination of MOC (Opto Coupler) 3021 and TRIAC (BT136) is used for Load driving.

This project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for relay. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.

 Block Diagram:

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