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measuring body temperature? — Parallax Forums

measuring body temperature?

ArchiverArchiver Posts: 46,084
edited 2002-07-30 13:09 in General Discussion
Hi everyone,

I'm trying to make a project that uses a stamp to measure skin temperature,
it's for a goofy "fortune teller" style thing, so it doesn't have to be
totally accurate, but I'd like to get as good a range of values as I can.
Anyone have any ideas on an elegant way to do this? Stick a digital
thermometer into an arm cuff? Search medical supply stores for some kind of
off the shelf solution?

thanks!

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2002-07-30 01:07
    In a message dated 7/29/02 20:06:05 Eastern Daylight Time, raoul@c...
    writes:


    > I'm trying to make a project that uses a stamp to measure skin temperature,
    > it's for a goofy "fortune teller" style thing, so it doesn't have to be
    > totally accurate, but I'd like to get as good a range of values as I can.
    > Anyone have any ideas on an elegant way to do this? Stick a digital
    > thermometer into an arm cuff? Search medical supply stores for some kind of
    > off the shelf solution?
    >

    Try an LM34 with an ADC. Very accurate, very sensitive.

    Sid


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2002-07-30 01:13
    At 08:28 PM 7/29/2002 -0400, you wrote:
    >Are you sure you want to measure temperature and not GSR? The latter is
    >harder to do with a Stamp, but I think it will give you more of the
    >"emotional" response [noparse][[/noparse]that triggers skin perspiration] that you're looking
    >for.
    >
    >If you do want to measure temp, you could certainly secure a sensor (like an
    >LM34) with an elastic or Velcro cuff.

    For this project we want to measure temperature, but since you offered [noparse];)[/noparse] ,
    I'm also interested in doing the GSR thing (which is how those "love meter"
    things work, right). Do you have any info, webiste, circuit on doing GSR?

    thanks!
  • ArchiverArchiver Posts: 46,084
    edited 2002-07-30 01:28
    Are you sure you want to measure temperature and not GSR? The latter is
    harder to do with a Stamp, but I think it will give you more of the
    "emotional" response [noparse][[/noparse]that triggers skin perspiration] that you're looking
    for.

    If you do want to measure temp, you could certainly secure a sensor (like an
    LM34) with an elastic or Velcro cuff.

    -- Jon Williams
    -- Applications Engineer, Parallax


    In a message dated 7/29/02 7:05:45 PM Central Daylight Time, raoul@c...
    writes:


    > Hi everyone,
    >
    > I'm trying to make a project that uses a stamp to measure skin temperature,
    > it's for a goofy "fortune teller" style thing, so it doesn't have to be
    > totally accurate, but I'd like to get as good a range of values as I can.
    > Anyone have any ideas on an elegant way to do this? Stick a digital
    > thermometer into an arm cuff? Search medical supply stores for some kind of
    > off the shelf solution?
    >
    >




    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2002-07-30 02:28
    In a message dated 7/29/02 8:10:05 PM Central Daylight Time, raoul@c...
    writes:


    > For this project we want to measure temperature, but since you offered [noparse];)[/noparse] ,
    > I'm also interested in doing the GSR thing (which is how those "love meter"
    >

    You might try measuring galvanic skin resistance with the RCTIME command.
    The skin is the R and I would suggest using a very very small C. And make
    sure your device is battery powered to prevent accidents.

    -- Jon


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2002-07-30 02:32
    Why not measure body ressistance? Shouldn't that be easier with just a
    resister series?
    Original Message
    From: raoul vaneigem [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=cF9qA4E0vkqs-tjYImKQHUYKnr1q97kxlu_GPSKUxH9YaJ8nacXMkjnRlr6AOvTg92jsgGUOWA]raoul@c...[/url
    Sent: Monday, July 29, 2002 7:13 PM
    To: basicstamps@yahoogroups.com
    Subject: Re: [noparse][[/noparse]basicstamps] measuring body temperature?

    At 08:28 PM 7/29/2002 -0400, you wrote:
    >Are you sure you want to measure temperature and not GSR? The latter
    is
    >harder to do with a Stamp, but I think it will give you more of the
    >"emotional" response [noparse][[/noparse]that triggers skin perspiration] that you're
    looking
    >for.
    >
    >If you do want to measure temp, you could certainly secure a sensor
    (like an
    >LM34) with an elastic or Velcro cuff.

    For this project we want to measure temperature, but since you offered
    [noparse];)[/noparse] ,
    I'm also interested in doing the GSR thing (which is how those "love
    meter"
    things work, right). Do you have any info, webiste, circuit on doing
    GSR?

    thanks!


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  • ArchiverArchiver Posts: 46,084
    edited 2002-07-30 13:09
    Hi,
    You got lots of suggestions on how to make your measurements. You also have
    to make sure that the project is battery powered, or that you use a medically
    approved AC mains type of DC power supply. Even just measuring skin
    resistance, it is possible to give a lethal shock with a run of the mill
    AC-CD power supply.

    Good Luck,
    Alan Bradford
    Plasma Technologies
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