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Heat Sensor — Parallax Forums

Heat Sensor

ArchiverArchiver Posts: 46,084
edited 2004-02-16 01:37 in General Discussion
Hi all,

I am building a microporcessor controlled robot which is capable of
extinguishing a flame (flame from a candle). I need a heat sensor which is
capable of detecting the flame. I called several local stores but they do
not carry heat sensors. Is there any other type of device that I can use?
Are there any web sites were that sell a heat sensor?

Thanks,

Sherrie
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Comments

  • ArchiverArchiver Posts: 46,084
    edited 2000-10-28 04:46
    Sherrie-

    I believe that someone may have already directed you to them, but Acroname
    sell several products that would accomplish what you have in mind. They
    sell both pyroelectric sensors, and sensors designed specifically to detect
    flames based on the UV signiture.

    Check out their collection of sensors on their website at:

    http://www.acroname.com/robotics/parts/c_Sensors.html

    Good luck!

    peter

    Original message from: "sherrie choo" <hantu_hitam@h...>
    >
    >Hi all,
    >
    >I am building a microporcessor controlled robot which is capable of
    >extinguishing a flame (flame from a candle). I need a heat sensor
    which is
    >capable of detecting the flame. I called several local stores but
    they do
    >not carry heat sensors. Is there any other type of device that I can
    use?
    >Are there any web sites were that sell a heat sensor?
    >
    >Thanks,
    >
    >Sherrie
  • ArchiverArchiver Posts: 46,084
    edited 2000-10-28 05:35
    Original message from: "sherrie choo" <hantu_hitam@h...>
    >
    >Hi all,
    >
    >I am building a microporcessor controlled robot which is capable of
    >extinguishing a flame (flame from a candle). I need a heat sensor
    which is
    >capable of detecting the flame. I called several local stores but
    they do
    >not carry heat sensors. Is there any other type of device that I can
    use?
    >Are there any web sites were that sell a heat sensor?
    >
    >Thanks,
    >
    >Sherrie

    You may be able to use a pyroelectric sensor. They are used in
    security lights, the type that turn on when you walk past them. They
    are tuned to respond to body heat, but they may also work with fire.
    Or perhaps you could look into using a thermistor. Do a web search for
    some info on those two.

    Jason


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  • ArchiverArchiver Posts: 46,084
    edited 2000-10-28 13:50
    > Hi all,
    >
    > I am building a microporcessor controlled robot which is capable of
    > extinguishing a flame (flame from a candle). I need a heat sensor
    > which is capable of detecting the flame. I called several local stores
    > but they do not carry heat sensors. Is there any other type of device
    > that I can use? Are there any web sites were that sell a heat sensor?
    >
    I've seen IR flame detectors. The were in glass.
  • ArchiverArchiver Posts: 46,084
    edited 2000-10-28 18:16
    Hello Mike,

    For remote heat detection, you can use a 1n914 diode connected
    directly toa 311 comparator. The output is then adjustable, and will tell
    you when you have passed your set temperature threshold. With the
    diode mounted inside a small (flashlight size) parabolic reflector, you
    are able to detect heat remotely; I've gotten at least ten feet with this
    procedure.
    This will _not_ really allow you to find people, but flames it
    will with ease, and great precision.

    I hope this may be of some use, have a nice afternoon,
    Paul



    On Sat, 28 Oct 2000, Mike DeMetz wrote:

    >
    > > Hi all,
    > >
    > > I am building a microporcessor controlled robot which is capable of
    > > extinguishing a flame (flame from a candle). I need a heat sensor
    > > which is capable of detecting the flame. I called several local stores
    > > but they do not carry heat sensors. Is there any other type of device
    > > that I can use? Are there any web sites were that sell a heat sensor?
    > >
    > I've seen IR flame detectors. The were in glass.
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-10-28 18:18
    Sorry Mike, the last email was not directed towards you.
    Paul

    On Sat, 28 Oct 2000, Mike DeMetz wrote:

    >
    > > Hi all,
    > >
    > > I am building a microporcessor controlled robot which is capable of
    > > extinguishing a flame (flame from a candle). I need a heat sensor
    > > which is capable of detecting the flame. I called several local stores
    > > but they do not carry heat sensors. Is there any other type of device
    > > that I can use? Are there any web sites were that sell a heat sensor?
    > >
    > I've seen IR flame detectors. The were in glass.
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-10-28 19:20
    I experimented with flame detectors and found if I cut the top off a metal
    power transistor, like a 3055, wired it to a milli ampmeter and a battery
    it would detect a cigerette lighter from 6 inches or so. The ambient light
    didn't seem to bother it...... Just a thought. ==Mac==

    At 04:52 AM 10/27/00 GMT, you wrote:
    >Hi all,
    >
    >I am building a microporcessor controlled robot which is capable of
    >extinguishing a flame (flame from a candle). I need a heat sensor which is
    >capable of detecting the flame. I called several local stores but they do
    >not carry heat sensors. Is there any other type of device that I can use?
    >Are there any web sites were that sell a heat sensor?
    >
    >Thanks,
    >
    >Sherrie
  • ArchiverArchiver Posts: 46,084
    edited 2004-02-16 00:18
    I want to measure the temp of a soldering iron..what kind of sensor
    will stand the heat, when attached to the iron...or is their a
    better way of doing it...Thanks
  • ArchiverArchiver Posts: 46,084
    edited 2004-02-16 01:33
    >I want to measure the temp of a soldering iron..what kind of sensor
    >will stand the heat, when attached to the iron...or is their a
    >better way of doing it...Thanks

    A thermocouple is what you want. They can be tiny enough to catch in
    a bead of solder, and they can take the heat (~750 deg F). Some
    multimeters have a nice thermocouple accessory.

    -- Tracy
  • ArchiverArchiver Posts: 46,084
    edited 2004-02-16 01:37
    There are lots of soldering irons with temperature sensors and displays
    built in.

    or

    A thermocouple will work fine at soldering temperatures and the DS2760
    1-wire chip is available as a Parallax kit for the BS2p stamps.

    or

    An infrared sensor such as those made by Raytek might get you close.

    Good luck

    Bill Lynn


    Original Message
    From: Herman [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=iGyYI-vCItYW4DV6o6-6sghIpKUWWyuojWTAzioSqjtP7FTy5Q1SQmfvkkCtAZKIK1hpuEFe]hodx@h...[/url
    Sent: Sunday, February 15, 2004 7:18 PM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] heat sensor


    I want to measure the temp of a soldering iron..what kind of sensor
    will stand the heat, when attached to the iron...or is their a
    better way of doing it...Thanks




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