Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: stealthstinger101 on May 19, 2007, 08:28:34 AM
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just like i said in the subject title, does anyone know how to make a simple but, efficient(and cheap) fire sensor?
and how would i program it into the micro controller? thx in advance.
~STEALTHSTINGER101 XD
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Hmm, the easiest I can think of would be to use a temperature sensor. Assuming you can stick the sensor into a fire, if you register a temperature above a threshold, you can declare it as a fire.
This wouldn't be terribly accurate I suppose, but it might get the job done well enough.
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I would just say buy one . . . they cost like ~$60 . . .
if that isnt an option, why not try an infrared sensor (heat is radiated in IR)?
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Hack a fire alarm?
The government probably pours money into making them as cheap as possible. I would definitely look into simply hacking one of these.
Turn off the sound, of course.........however..........to activate the sound this may be some sort of +5V channel or something.
Ideal for a microcontroller, perhaps.
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Also, when doing something like this, maybe a thermocouple would be absolutely brilliant. Very cheap.
You would need to amplify the o/p though......?!!
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I have some ideas, but first I would like to know why do you want to sense fire and how(and where and for how long) the fire is going to appear. I mean for each situation a different kind of sensor is required. Sometimes you could use the smoke, sometimes it is better use IR, sometimes direct contact with a thermoresitor is the best, it depends a lot on the situation. Please expain the situation.