Automatic stand-by power cutoff outlet for 230V AC operated devices for energy savingINTRODUCTION

Heres a concept being introduced to save energy. Most of the times when systems like TV, Computers, DVD/CD players etc., are being run we just turn off the device switch but the AC supply keeps running. There is still power consumption (less of course) in such cases and most ICs still keep operating .We look for such devices and put them off .DESCRIPTION

This project SMART AND EFFICIENT ENERGY MANAGEMENT is a system used for giving a demo on how to find out the devices in stand-by mode and turn them off using the InfraRed TV/DVD Remote Handset.This helps in conserving power.

Working of this module has follows,

A. Remote Control handset can be used to control the variation in power stages which is demonstrated by varying the brightness of a bulb . B. Each Number in the handset represents a brightness level (0-9) .This Numbers are transmitted accordingly using the IR transmitter in remote control.C. The IR receiver receives this Number.

D. The controller, according to the number sensed generates a pulse of different at different phases of the AC cycle to control circuitry .

E. This module has a( ZCD )Zero crossing detector, Motor Control circuitry and Display . As soon as the commands are received, the controller activates a ZCD, which in turn controls a Optoisolator based Triac unit connected to the AC mains via an Induction motor. The controller is programmed to generate timing signals to control conduction angle of the Triac for the AC cycle.

F. As per the o/p of the TRIAC AC input cycle to a testing unit say a bulbs brightness varies. When the brightness is very less or if the bulb glows dimmer then it is equivalent to a device being in stand by mode.G. Accordingly a relay will be operated to turn off the bulb during minimum brightness.

H. The brightness levels are set by the remote control handset.

Alphanumeric LCD is used to display the brightness variations.Here we using P89V51RD2 microcontroller for processing information.

8051 architecture based P89V51RD2 microcontroller from NxP is used to implement this project. Microcontroller acts as the heart of the project, which controls the whole system. It contains 1k RAM, 64k Flash, 3 Timers, 2 external interrupts, 1 UART, 32 GPIOs, ISP programming support etc. KEIL IDE is used to program the microcontroller and the coding will be done using Embedded C.BLOCK DIAGRAM

COMPONENTS USED

1. Microcontroller - P89V51RD2 NxP.2. IR Remote Handset3. IR Receiver IC TSOP17384. ZCD

5. Opto isolator

6. Triacs

7. RelaySOFTWARES USED

1. Embedded C

2. Keil Compiler

3. Flash MagicUses

Reduction in power consumption.

The device wear and tear can be reduced by turn it off if it stays in stand-by mode for a long time.This method actively reduces the standby power.

Future Scope:

The proposed Model provides easy way to add, delete, and move home devices to other power outlets. When a home device is moved to the different outlet, the energy information of the home device is kept consistently and seamlessly regardless of location change.IR Remote Handset

IR Sensor

(TSOP)

ALCD

MICRO

CONTROLLER

Bulb

TRIAC

Opto Isolator

Relay

AC MAINS

Zero Crossing Detector