Fragrance
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artem said:Do you have any info about medical opto sensors using photodiod for heart beat signal detection ?
artem said:Hi
I am actually asking on behalf of my friend
He wass dealing with health irregularity detection by
heart bit signal autocorrelation analysis . He designed 2 types of sensors to get heatbeat signal -
pressure based and opto based .
General problem with those are it is impossible to get similar results from all probed patient so signal had to be adapted before actual processing could be done .
I was just asking to know is there ready to use sensor solutions already available for use in mass production .Otherwise my friend has to deal with sensor design . Some info could be found in Biomedical engineering book from mcu.czc .
Thanks for reply
Fragrance said:hi all
Here is the Heart Beat Monitor as i promise upload contian lot of information about the heart beat monitor and two types of heart beat
monitor one on pic micro and other on cmos chips with sensor detial
one thing more in pic based monitor used photodiode in the place of LDR
M!k said:Fragrance said:hi all
Here is the Heart Beat Monitor as i promise upload contian lot of information about the heart beat monitor and two types of heart beat
monitor one on pic micro and other on cmos chips with sensor detial
one thing more in pic based monitor used photodiode in the place of LDR
Hi Fragrance,
your uploaded archieve contains a "schematic.pdf" (in HEARTBEAT.zip)which needs a password. You can post it? - thanks
Mik
Marv said:Interesting, how accurate do the IR/RED wavelengths need to be in order to make oxygen sensing work? I understand for optical blood glucose sensing the LEDs need to be very specific.
Alvin81 said:Hi Fragrance,
I've tried using the circuit diagram b4 this....I've even sampled the output of the circuit using PIC's input capture and displaying it graphically on the PC using VB. However, I've noticed each time the sensor is used, it gives out different reading of the heart beat period. Anyone knows why this is so?
Thanx
rolandkamber said:Hi Fragrance,
Just read your lines of 23 Sept 2003 10:46 (while I was searching for the photo diode BPW 34). Your message was :
"HI ALL
here is an artical about the photo diode how to use them and signal conditioning modulated data receiving and lot more with applications
and example"
I have just registered and couldn't find out how I can displaythis article.
Please indicate or could you e-mail the article to rolandkamber@hotmail.com
advance thanks and regards
Roland
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