Re: [PD] pulse measurement using touch sensors
Hi list, thank you all for your valuable input... i'll check out each of the options and probably come back to you later. gr~~~ smime.p7s Description: S/MIME cryptographic signature ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] pulse measurement using touch sensors
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? many thanks, gr~~~ -- Thomas Grill http://g.org smime.p7s Description: S/MIME cryptographic signature ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] pulse measurement using touch sensors
Thomas Grill a écrit : 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://g.org ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] pulse measurement using touch sensors
Try this link to medical sensors. http://www.meas-spec.com/myMeas/industry/medical.asp Nick. ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] pulse measurement using touch sensors
Thomas Grill wrote: 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? The basis of commercial pulse sensors is a just red LED and a light dependent resistor or a phototransistor. The variation in the blood flow changes the amount of red light that passes through the finger. You probably need to amplify the signal, then do further signal processing (filtering and thresholding) in pd. Martin ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] pulse measurement using touch sensors
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 [EMAIL PROTECTED] . 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 - http://randomseed.org 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://g.org ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] pulse measurement using touch sensors
Hello Thomas, We are using Nexus 10 (http://www.mindmedia.nl/english/nexus10.php) and Nexus 4 (http://www.mindmedia.nl/english/nexus4.php) for bio- signal acquisition in our project, currently we are implementing the PD [audio-visual engine] part of the system, we trace the signals by integrating a Python script to Mindmedia's Biotrace+ (http:// www.mindmedia.nl/english/biotrace.php) and we stream data through OSC. Skin conductance sensor with the above combination, is like a hand touch sensor available for measuring pulse. On the other hand piezo contact mic can be used as a sensor to receive pulse, but I guess it should be tested to see how much reliable output can be received though a contact mic. Koray - M.Koray Tahiroglu Media Lab,UIAH http://mlab.taik.fi/~korayt tel: +358 468956602 ( in Finland only) tel: +90 533 712 8245 On May 29, 2008, at 2:42 PM, [EMAIL PROTECTED] wrote: Message: 1 Date: Thu, 29 May 2008 12:30:38 +0200 From: Thomas Grill [EMAIL PROTECTED] Subject: [PD] pulse measurement using touch sensors To: PD List send pd-list@iem.at Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=us-ascii 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? many thanks, gr~~~ -- Thomas Grill http://g.org ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
