Urgent: Circuit to measure human pulse rate

Two types.

One type is a blood pressure cuff which also detects pulse.

The other sends light through the ear lobe. As blood is pumped through the ear lobe with each beat of the heart, the amount of light which can pass through diminishes. So more light, less light, more light, less light, etc.

Arm pressure cuff...
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Ear lobe...
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You can check out this..its called Photoplethysmography,......... <a href="https://en.wikipedia.org/wiki/Photoplethysmograph" target="_blank" rel="nofollow noopener noreferrer">Photoplethysmograph</a>

And i guess a little bit of work through google could lead you to this...



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