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rohitppande
Joined: 23 May 2006
Posts: 9
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 23 Jul 2007 15:45 automatic room light controller |
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hello guys!
i'm making a project where u detect the no. of persons entering inside a room and also detect the no. of persons inside. would u guys help me in giving a suggestion for a high precision infrared led detector so that this project may be practically implemented........
thnx in advance...
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A.Anand Srinivasan
Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
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23 Jul 2007 16:21 project report on automatic room light controller |
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| do you need the no. of persons entering the room or the no.of persons inside the room at a particular instant of time......
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rohitppande
Joined: 23 May 2006
Posts: 9
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23 Jul 2007 16:37 automatic room controller |
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i just need to know the persons inside the room which i'm going to achieve by having two ir leds and sensors so that while entering the first ir radiation is disrupted and then the second one is disrupted and while leaving the room its the viceversa. this is then used to count up or count down the display.......
but the problem is i'm not getting a a good detector so that it should give a high/low when ir radiations are striking it and a low/high when no ir radiation is striking it...
also help me with the emittors as they must emit out radiations in a straight line.....
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23 Jul 2007 16:37 Ads |
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A.Anand Srinivasan
Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
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23 Jul 2007 16:45 automatic room light controllers |
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you get high quality remote LED(IR led)... those would come in a package which is silvered at the sides to focus the radiation....
also drive the LED using darlington pair to get more transmission distance.....
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Richmond
Joined: 29 Oct 2009
Posts: 3
Location: Ghana
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30 Oct 2009 13:26 Re: automatic room light controller |
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| rohitppande wrote: |
hello guys!
i'm making a project where u detect the no. of persons entering inside a room and also detect the no. of persons inside. would u guys help me in giving a suggestion for a high precision infrared led detector so that this project may be practically implemented........
thnx in advance... |
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please, if you have the documentation on the topic please help me. I need it badly for my final year projct.
thank you.
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amjadali56
Joined: 17 Sep 2007
Posts: 5
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30 Oct 2009 14:29 automatic room light controller |
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| if u have hold to 74LS4 i can help, mail me amjadali56(at)hotmail.com
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elrayes
Joined: 03 Jun 2008
Posts: 163
Helped: 8
Location: Egypt
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04 Nov 2009 9:58 automatic room light controller |
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just put two sensors on the door on the same horizontal level but little bit far from each, but not too far, if somebody enters the first sensor will count then the second which will make you controller increment for one more person for inside people, if somebody leaves the room the second will count then the first sensor to decrement the count, and you have a microcontroller that keep the counts and display it on whatever you like like 7-segment or character LCD.
good luck
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pranam77
Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)
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04 Nov 2009 13:58 Re: automatic room light controller |
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If you meant counting the visitors and controlling the room light accordingly, you may download a similar project using 89S52 microcontroller with source codes from this link
http://www.8051projects.net/request119.html
Cheers
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