A optically obtained plethysmogram using an LED that measures the output volume of an organ, such as the heart. A photodiode measures the amount of light reflected from the LED, which in a heart monitoring application can be translated into a waveform. Respiration can induce variations in the amplitude of the PPG waveform.
Content © 2012-2019. All Rights Reserved.
Powered by T.O.W.E.R.S. IoTGuide, ThingManager, thingguide and thngguide are service marks. The internetofthingsguide.com domain name is used under license.