PHOTOPLETHYSMOGRAPHIC DETECTOR FOR PERIPHERAL PULSE REGISTRATION

In this paper a low power photoplethysmograph for heart rate detection by the amplitude demodulation of the reflected from the skin and tissue light is proposed and described. The optical sensor consists from six infrared photoreceivers placed in а circle around one infrared led. The use of only one emitter in switch mode and synchronous detection of the received signal defines the achieved low power consumption. The device can be used for fast heart rate registration, for example in emergency cases or in addition to existing defibrillators and/or monitoring systems