METHODS FOR IMPROVING SIGNAL QUALITY IN WEARABLE BIOMETRIC MONITORING DEVICES
First Claim
1. A method of generating a physiological assessment of a subject, the method comprising:
- collecting physiological information and motion information from the subject over a period of time via at least one wearable device worn by the subject, wherein the at least one wearable device includes at least one physiological sensor and at least one motion sensor;
determining a quality level for the physiological information at one or more selected times during the period of time, comprising calculating, via at least one processor, a ratio of physiological information to motion information in a signal from the at least one physiological sensor, wherein a higher ratio of physiological information to motion information indicates a higher quality level for the physiological information; and
generating, via the at least one processor, a physiological assessment for the subject using the physiological information at the one or more selected times having a quality level above a threshold level.
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Accused Products
Abstract
A wearable biometric monitoring device is configured to assess the biometric signal quality of one or more sensors associated with the monitoring device, determine how the user should adjust the device to improve the biometric fit, and instruct the user to wear the biometric monitoring device a certain way. Communicating instructions to a user may include instructing the user to execute a testing regimen while wearing the biometric monitoring device. The testing regimen facilitates an estimation of a signal quality that can be used to provide feedback to the user that he/she needs to adjust the device to improve the biometric fit and the biometric signal quality.
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Citations
23 Claims
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1. A method of generating a physiological assessment of a subject, the method comprising:
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collecting physiological information and motion information from the subject over a period of time via at least one wearable device worn by the subject, wherein the at least one wearable device includes at least one physiological sensor and at least one motion sensor; determining a quality level for the physiological information at one or more selected times during the period of time, comprising calculating, via at least one processor, a ratio of physiological information to motion information in a signal from the at least one physiological sensor, wherein a higher ratio of physiological information to motion information indicates a higher quality level for the physiological information; and generating, via the at least one processor, a physiological assessment for the subject using the physiological information at the one or more selected times having a quality level above a threshold level. - View Dependent Claims (2, 3)
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4. A method of generating a physiological assessment of a subject, the method comprising:
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collecting physiological information and motion information from a subject via at least one wearable device worn by the subject, wherein the at least one wearable device includes at least one physiological sensor and at least one motion sensor; determining, via at least one processor, one or more time periods when the wearable device is being worn by the subject, comprising determining when subject motion is above a first threshold level or when signals from the at least one physiological sensor are above a second threshold level; and generating a physiological assessment for the subject using the physiological information and/or motion information obtained during the one or more time periods when the wearable device is being worn by the subject. - View Dependent Claims (5, 6, 7)
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- 8. A method of detecting if a biometric monitoring device is being worn by a subject, wherein the biometric monitoring device includes a PPG sensor, the method comprising processing data produced by the PPG sensor via at least one processor to determine whether a heart rate variability value of the subject is within a predetermined range, wherein the heart rate variability value is calculated based on a group of consecutive R-R intervals for the subject.
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13. A method of detecting if a biometric monitoring device is being worn by a subject, wherein the biometric monitoring device includes a PPG sensor and at least one processor in communication with the PPG sensor, the method comprising the following performed via the at least one processor:
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determining quality of a signal produced by the PPG sensor, comprising calculating a ratio of physiological information to motion information in a signal from the PPG sensor, wherein a higher ratio of physiological information to motion information indicates a higher quality level for the signal; making an estimate as to whether the biometric monitoring device is being worn based on the signal produced by the PPG sensor, comprising determining if the signal is within a predetermined range; and determining whether the biometric monitoring device is being worn by processing the estimate as to whether the biometric monitoring device is being worn in context with the quality of the signal. - View Dependent Claims (14, 15, 16, 17)
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18. A method of detecting if a biometric monitoring device is being worn by a subject, wherein the biometric monitoring device includes a PPG sensor, the method comprising processing data produced by the PPG sensor via at least one processor to determine at least one of the following:
- whether an intensity of a DC component of a signal produced by the PPG sensor is within a predetermined range, an existence of a subject vital sign, whether a heart rate value (HRV) for the subject is within a predetermined range.
- View Dependent Claims (19, 20, 21, 22, 23)
Specification