Arduino Forum

Using Arduino => Sensors => Topic started by: MorganS on Apr 19, 2016, 06:05 am

Title: Anybody know a hackable fire sensor?
Post by: MorganS on Apr 19, 2016, 06:05 am
I've got a requirement to put a fire sensor in an enclosed space. (About 1m3.) I've already got 3 Arduinos in the space, so obviously I thought of connecting it to an Arduino and having the fire alarm go through my Arduino network.

Other than one instructable showing an MQ2 sensor - which is not a flame or smoke sensor - I'm not finding anything related to Arduino. Domestic type smoke alarms don't seem to have a simple digital output I can use. Other stuff seems to always be part of a building alarm system and uses a proprietary protocol to talk to the fire panel. :(

What sensors are there out there for flame/smoke/heat, like a domestic alarm, which has a 5V or 12V output? I'll even take a serial output if the protocol is available. It also has to run on 5V or 12V (no mains power.)
Title: Re: Anybody know a hackable fire sensor?
Post by: larryd on Apr 19, 2016, 06:12 am
1 cubic meter, what is this?

Do you want to detect: flame, smoke or heat?
Maybe all you need is an IR or a simple temperature sensor.

Flame sensor
(http://www.sunfounder.com/media/wysiwyg/swatches/sensor_kit_v2_0_for_b_plus/lesson-21-flame-sensor/fdsfassa.png)
.
Title: Re: Anybody know a hackable fire sensor?
Post by: npkamen on Apr 19, 2016, 07:01 am
There isn't really any such thing as a fire sensor.

Usually you detect smoke or heat (or both) to activate a fire alarm.

What do you want to do with it?
Title: Re: Anybody know a hackable fire sensor?
Post by: JimboZA on Apr 19, 2016, 07:31 am
There isn't really any such thing as a fire sensor.
There are sensors which can recognise flame. My son was telling me about them when he was doing his IFE  (http://www.ife.org.uk/)studies. But I have no idea if they're readily available: might still be in the research phases.

edit.... son's looking for a reference

Title: Re: Anybody know a hackable fire sensor?
Post by: JimboZA on Apr 19, 2016, 07:57 am
PM'd you with some stuff my son found. Bit long to post here.

HTH....
Title: Re: Anybody know a hackable fire sensor?
Post by: Riva on Apr 19, 2016, 09:43 am
Could you just connect wires from a smoke detector buzzer output to the arduino (observing voltage limitations for arduino pins)
Title: Re: Anybody know a hackable fire sensor?
Post by: MorganS on Apr 19, 2016, 11:55 am
I was hoping for something a bit more robust than jumpering the buzzer. A domestic alarm is also kind of large.

Thanks Jimbo, I'll check out your suggestion.