Motion cancellation of optical input signals for physiological pulse measurement
US8858454B2 · kind B2 · utility
1Cited by
16References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 13, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Sep 13, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7239
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pulse rate sensor that includes an accelerometer for measuring periodic motion and a piezo sensor for detecting erratic motion is capable of more accurately determining pulse rate by accounting for these types of motion. The pulse rate sensor in accordance with the present invention diminishes pulse rate signal degradation due to erratic motion through a combination of algorithms that control signal boosting, waveform refinement and signal noise suppression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.