Apparatus and method for measuring heart rate

Details Apparatus and method for measuring heart rate Apparatus and method for measuring heart rate

1993-04-26

1994-11-22

Manuel, George

Surgery

Truss

Pad

128704, 128706, 128708, A61B 50402

Patent

active

053659341

ABSTRACT:
An exercise apparatus for measuring heart rate is provided which comprises a sensor for generating a signal which includes the biopotential signal produced by a heart. This signal is filtered, amplified and digitized. A computer autocorrelates the digitized signal. A plurality of signal indication routines then scan the autocorrelated output for the presence of periodic signals. Each of the signal indication routines uses different search or filter criteria, such as peak and wave form detection, and generates one (and in some cases, several) candidate heart rates. An arbitrator then selects one of the candidate heart rates according to predetermined criteria. These criteria include the value of previously selected heart rates. In one embodiment, the signal indication and arbitration routines are especially well-suited for measuring the heart rate of a user while exercising on a stair climbing machine or treadmill.

REFERENCES:
patent: 4239048 (1980-12-01), Steuer
patent: 5088497 (1992-02-01), Ikeda
patent: 5109863 (1992-05-01), Semmlow et al.
Applications Handbook, vols. 1, 2, 3 and 4.

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