vastcyprus.blogg.se - Wrist heart monitor

#WRIST HEART MONITOR SKIN#

The processor generates a photoplethysmogram (PPG) signal – containing cardiac, motion (determined by an inertial sensor, which senses movement of the device), and respiratory components – based on the intensity of the reflected light. The reflection of the light is received by a photodiode, which sends a light intensity signal to the processor.

#WRIST HEART MONITOR SKIN#

The heart rate monitor in Garmin watches directs light from a light-emitting diode (LED) to the skin of the user. Using this device over an extended period of time allows for users to see improvements in heart rate due to exercise. Knowing how heart rate changes personally affect the user can also give insight into dehydration, stress, and needed recovery. This gives insight into the user’s fitness and exertion levels and ensures the user is in desired heart rate zones while training.

This watch, primarily used by runners, tells the user their heart rate and therefore how fast their heart is pumping blood through the body at any given time during exercise. This device would be of interest to any Garmin watch user, especially those interested in heart rate during exercise.

The device contains an interface that displays determined information to the user.

The time between successive cycles gives insight into heart rate variability, stress, recovery time, VO2 max, and/or sleep quality.

The cardiac component of signal allows for heart rate to be determined.

The device emits a light signal and receives an input of the light’s reflection, which eventually allows for the isolation of the cardiac component of signal.

The processor determines frequency associated with the motion signal, transforms the signal from PPG into the frequency domain, identifies the cardiac component of the PPG signal, configures a time-variant filter, and calculates the time between cardiac component cycles.

The device consists of an emitter, receiver, inertial sensor, and time-variant sensor.

The main claims of this invention are as follows: The heart rate monitor in Garmin watches monitors cardiac signals via the user’s wrist. Back of Garmin watch with heart rate monitor device (labeled “610”).