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Join Date: Sep 2009
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Embedded Systems

09/17/2009 7:19 PM

I have given a project to make an embedded system that automatically control electricity supply in a room i.e. when nobody is in the room the power supply is cut down.Please help me to chose a sensor that can be used in such application .

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Guru
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#1

Re: Need your help

09/17/2009 7:30 PM

try this

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#2

Re: Need your help

09/17/2009 8:16 PM

what you need is a few mostion sensors and a few wall infered light beams to bounce to each wall to measuer the distence and when no one is in the room the power will decreace till someone goes in to the room

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#4
In reply to #2

Re: Need your help

09/18/2009 3:44 AM

spellchequer!!!!!!!!!!!!!!!!!!!

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Guru
Engineering Fields - Electrical Engineering - Analog and Digital Circuit Design Engineering Fields - Electromechanical Engineering - Transformers, Motors & Drives, EM Launchers Engineering Fields - Engineering Physics - Applied Electrical, Optical, and Mechanical

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#3

Re: Need your help

09/17/2009 9:40 PM

RVZ717 has the right direction. The market for occupancy controlled lighting has been around for several years and offers a pretty extensive selection of control options.

Here is just one example of a specific manufacturers offerings...

occupancy sensors for lighting

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#5

Re: Embedded Systems

10/11/2009 12:09 PM

You could use a motion detector no motion then turn the power off. Or a light beam interrupt sensor that detects someone exiting the room. The cheapest is a heat sensor that you can buy and it detects motion but it may not work if a person is sleeping in the room (no motion).

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Anonymous Poster (2); maveric_manic (1); mjb1962853 (1); RVZ717 (1)

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