Wrist worn heart rate monitor
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United States of America Patent
Stats
-
Jul 3, 1990
Grant Date -
N/A
app pub date -
Feb 15, 1989
filing date -
Feb 15, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wrist worn heart rate monitor (100) senses a noisy biosignal with one sensor (104A) in contact with the user's finger and another sensor (104B) in contact with the user's wrist. The sensed signal is modified by a filter (112), analog to digital converter (116) and digital filter (264). A correlator (272) and QRS detector (286) are used to determine characteristics of a first segment of the modified signal. A match filter (300) and learned user reference (206) are used to match a second segment of the modified signal with the determined characteristics of the first segment to produce a processed signal. The QRS detector (286), an interval judge (292), and a momentum machine (202) determine the heart rate from the processed signal. A performance predictor (260) predicts how well the heart rate monitor (100) will perform with an individual user.
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