
8
9
Operating principle
The Philips health watch is a wrist-worn device for 24/7 home use (indoor and outdoor).
The device uses a tri-axial accelerometer to measure motion and green Light-Emitting
Diodes (LEDs) and a photodiode to create a photoplethysmogram (PPG).
The accelerometer output and the PPG-signal are analyzed to determine heartbeat,
activity type, steps taken, and are used as input for estimation of energy expenditure
and other parameters.
ENGLISH
Summary of Contents for DL879X
Page 1: ...EN User manual 5 DL879X ...
Page 2: ...2 1 4 3 5 6 7 1 ...