Wireless Heart Rate Monitor
 

Hi,

Does anyone have or is familiar with designing/building a receiver for
the Polar Heart Rate Monitor transmitter?

Thanks,
Mark

Are you talking MICS (Medical Implant Communications Service)?


"Mark Witczak" wrote in message
news:nCwQd.36312$Vg3.2296@lakeread05...
Hi,

Does anyone have or is familiar with designing/building a receiver for
the Polar Heart Rate Monitor transmitter?

Thanks,
Mark

Mark Witczak wrote in news:nCwQd.36312$Vg3.2296
@lakeread05:

Hi,

Does anyone have or is familiar with designing/building a receiver for
the Polar Heart Rate Monitor transmitter?

Thanks,
Mark


First, Polar makes a small stand-alone receiver unit for their
transmitters. The transmitters output a "burst" at 5KHz for each qrs
detected. At this frequency, you don't use a conventional antenna, but
rather a resonance-tuned coupling coil. The range is *very* limited (less
than 2 meters) and is prone to interference. I gave up on the Polar stuff
and made my own system using off-the-shelf RF modules at 413MHz.

On Wed, 16 Feb 2005 00:50:42 GMT, the renowned "Thomas Magma"
wrote:

Are you talking MICS (Medical Implant Communications Service)?

Polar is (Swiss) a manufacturer of wris****ch-Heart Rate Monitors
(HRM) that are used by people working out. They have a separate
transmitter that straps around your chest, and a receiver in the
wris****ch. They're a consumer product, albeit a niche one. Their
manuals are a bit.. opaque.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

--
jan piste kronlund at tuubi1 piste net
Please notice my new address!
Osoitteeni on muuttunut, oikea on yllä.
"Mark Witczak" wrote in message
news:nCwQd.36312$Vg3.2296@lakeread05...
Hi,

Does anyone have or is familiar with designing/building a receiver for
the Polar Heart Rate Monitor transmitter?

Thanks,
Mark

Just a little correction, Polar is Finnish company www.polar.fi ;-)

Jan

Spehro Pefhany wrote:
On Wed, 16 Feb 2005 00:50:42 GMT, the renowned "Thomas Magma"
wrote:


Are you talking MICS (Medical Implant Communications Service)?


Polar is (Swiss) a manufacturer of wris****ch-Heart Rate Monitors
(HRM) that are used by people working out. They have a separate
transmitter that straps around your chest, and a receiver in the
wris****ch. They're a consumer product, albeit a niche one. Their
manuals are a bit.. opaque.


The battery in the wrist watch is a consumer changeout, but the
transmitter must be returned to the service center when the battery
dies- every two-three years or so- it is a sealed unit.

Fred Bloggs wrote in news:421339E8.3050102
@nospam.com:



Spehro Pefhany wrote:
On Wed, 16 Feb 2005 00:50:42 GMT, the renowned "Thomas Magma"
wrote:


Are you talking MICS (Medical Implant Communications Service)?


Polar is (Swiss) a manufacturer of wris****ch-Heart Rate Monitors
(HRM) that are used by people working out. They have a separate
transmitter that straps around your chest, and a receiver in the
wris****ch. They're a consumer product, albeit a niche one. Their
manuals are a bit.. opaque.


The battery in the wrist watch is a consumer changeout, but the
transmitter must be returned to the service center when the battery
dies- every two-three years or so- it is a sealed unit.


I'd like to see a consumer of a S410 change the battery. It is a bitch
and is a testament to cheap ****/unobtainable customer service.

Polar is cheap crap, with .009mm AL metal type battery cage and soft
plastic, coupled with nessicity for complete dissasembly - separation of
LCD panel from PCB! Short battery life.

I would have paid hundreds of dollars for the 6 month battery life of
this POS, if I didn't have the nuts to change it myself 4 times. In two
years. The plastic tabs that hold the battery are wearing out. Short
battery life + expensive HRM + needing to line up the 20+ graphite pads
on the display to the PCB = **** you polar.

A $12 Chinese Timex is a bargain (battery changing wise) compared to the
this abomination.

Shop around.

Venting, thanks!

Dave

Mark Witczak wrote:

Hi,

Does anyone have or is familiar with designing/building a receiver for
the Polar Heart Rate Monitor transmitter?

Thanks,
Mark

You might find this helpful:

http://rick.mollprojects.com/hrm/index.html

I'm sure the design could be improved, but it's worked for me; and at
least a few others have built working copies.

Rick Moll