Determining measurement confidence for data collected from sensors of a wearable device
US9729693B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2016 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Nov 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods determining measurement confidence for data collected from sensors of a wearable device are herein disclosed. In an implementation, a confidence measurement that a wearable device is worn by a user can be determined by determining that the wearable device is not in motion, comparing sample voltages collected using a light emitter to thresholds indicative of a surface on which the light is being reflected, calculating a signal quality metric using data collected using a pulse oximeter, and comparing the signal quality metric to thresholds indicative of typical biometric data measurements. Other implementations for confidence measurement can include frequency transforming signal data stored in a buffer, performing probabilistic modelling on the frequency transformed data, and determining a confidence measurement using a signal quality estimation based on the modelled data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.