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Can I sense fire using Infra Red receiver

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thannara123

thannara123

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Hello friends ,
Can I sense fire using Infra Red receiver ?
Is there any fire sensor with two Pin ?
 

As for 2 pins, you can use a thermistor or similar device and use it to sense change in temperature by using it with a voltage divider and comparator or microcontroller.

I don't know of any specific fire detectors/sensors with 2 pins.

Hope this helps.
Tahmid.
 

hey , to sense fire just use a simple LM35 ic n fix a preset temperature on it using a voltage divider circuit and from the o/p of lm35 activate a fire extinguisher.dat will solve ur purpose ..
 

infrared signal makes heat (this signal comes from the sun ) so can i use IR to sense heat ?
 

yes for sure .. ir sensors can sense heat ,, but cant predict its amount .. wat r u actually trying to do if i can ask?
 

While the heat does give out IR signals and during fire, you have IR waves, I don't think you can use a IR sensor such as TSOP for this purpose. While I can't explain why, I haven't heard of such a thing and I don't think it's possible. Why not just use a thermistor or similar device?
 

IR heat sensing via Lm358 may good detection ?
 

uhh , Lm358 is power amplifier..as i said before use Lm35 temperature sensor ic ,, just A 3 pin ic ,, n it will solve ur purpose.. ir sensors like tsop just produce a voltage signal in response to the falling ir wave on them.. u can use a ir sensor but then u ll have to use a extra circuitry to calculate the temp difference being created .. lm35 has all such provisions inbuilt..
 

Sorry No, LM358 is a Low Power Dual Operational Amplifier
**broken link removed**
it may increase the sensitivity of the IR am i ?
 

hmm ya it ll but tsop already has a op amp in it to amplify r signal.. well wat r u doing some project ?/
 

ok thanks akshay15 i am trying to fire sensor alarm by gsm (SIM300) module
please dont use short messages read the forum rules thanks again
 

Hi,
All semiconductor device can produce current in them with a rise in temperature...If you are talking about TSOP 1738.... I dont think it can sence heat... For its proper functioning it requires the detection of particular band spectrum range... And also it doesnt work with the principle of thermo electric effect... Also the fire cannot generate this spectrum of frequencies... One choice is the use of thermistor... Or a thermocouple or ic lm 35.... Other choice is to detect fire using smoke... I.e.; a smoke alarm using IR...
 

Daylight and even more incandescent lamp light has a considerable IR content. So an IR measurement is very unspecific. Far UV sensors are more specific and have been used as flame detector in furnaces as well as for fire alarm. They are particularly good for distance sensing where an optical or ionization smoke detector doesn't work.
 
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