Power Management System

Discussion in 'The Projects Forum' started by adikai, Oct 21, 2012.

  1. adikai

    Thread Starter New Member

    Oct 21, 2012
    1
    0
    Hi ,

    I am new to this forums , so HI to all . I am a software developer and just started my journey in electronics side . :) I had this particular idea which I want to do for my project .

    IDEA : Problem statement : In my college every room has fans and light which is powered with normal switches. People when leaving the class don't switch off the fans and lights when leaving the classroom

    Solution : I wanted to develop a software which will recognize when the classroom is empty and will switch off the lights as soon as no one is there .

    It will have three components :

    1. Sensor : This will detect that there are no people in the room and send a signal to the system

    2. Software system : Which is responsible for taking in INPUT from the sensor do the processing and send either signal ON/OFF command in some form to the electrical main

    3. Main Circuit : This circuit should understand the software command and convert it to signal of some form which makes circuit switch off and switch on


    MY PROBLEM :

    I am not able to figure out two things .

    1. What circuit should I use which can understand a software command and convert to signal ?

    2. How can this circuit switch off the power?

    I will be greatfull , If somebody can guide if not give proper solution :)
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,153
    3,059
    "Normal" switches can be replaced with smart switches, which have motion detectors built into them. Walk in, the lights come on and stay on for a delayed time. If you stay still enough long enough - beyond the delay - the lights will go out on you.
     
  3. Mustafatarhan49

    Member

    Aug 16, 2012
    56
    0
    Have you ever googled PIR sensors? http://en.wikipedia.org/wiki/Passive_infrared_sensor
    It just detects if there is a movement or not than It switch on &off the light.
    http://www.ladyada.net/learn/sensors/pir.html check also this website
     
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