hi thomas,
polar has an oem product line http://www.polarusa.com/manufacturers/products/products.asp
the contact heart rate system is also for use with hand sensors. the europe devision is in switzerland and you can get quotes from tiziana.moro@polar.fi .
i did not use this one specific but i heard it takes a couple of seconds to give you an output (i only used the belt and receiver system from polar, which works really well).
another hand touch system i used which is really responsive and reliable is from another finnish company which is called tunturi http://www.tunturi.com/, they produce hometrainers in which they use hand touch hate rate monitors. they dont have a oem product line, so you would need to contact them to obtain some boards.
all of this modules have an output which gives you the pulsrate as an TTL pulse, so you can easiliy read with a microcontroller and send it further to your machine.
i collected quite some experience over the years on this topic, so if you want to know more just write me.
best
erich
On Thu, 29 May 2008, cyrille henry wrote:
Thomas Grill a �crit :
Hi all, does anyone have experience with measuring pulse using just hand touch sensors? Which kind of sensors are feasible, is there any special signal conditioning necessary?
i have no experience, but the 1st thing i would try is to use some medical device like this : http://www.medinov.fr/images/products/pdf/Oxym%E8tre.pdf http://www.contactsecurite.fr/fr/shop-40.html (sorry link are in french) open them and make some electronic in order to get data out of the sensors.
cyrille
many thanks, gr~~~
-- Thomas Grill http://grrrr.org
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