Urgent: Circuit to measure human pulse rate

can some one help me with a circuit to measure human pulse rate ????

Replies

  • bill190
    bill190
    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...
    #-Link-Snipped-#

    Ear lobe...
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  • coolsank
    coolsank
    You can check out this..its called Photoplethysmography,......... Photoplethysmograph

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



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