Methods for improving signal quality in wearable biometric monitoring devices
First Claim
1. 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:
- receiving a signal produced by the PPG sensor;
processing the signal produced by the PPG sensor via at least one processor to determine a statistical distribution of a group of consecutive peaks in the signal;
determining via the at least one processor that the device is being worn if the statistical distribution of the group of consecutive peaks in the signal is consistent with R-R intervals of a living person or that the device is not being worn if the statistical distribution of the group of consecutive peaks in the signal is not consistent with R-R intervals of a living person; and
autonomously adjusting an adjustment mechanism of the biometric monitoring device responsive to the determination that the device is being worn.
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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
20 Claims
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1. 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:
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receiving a signal produced by the PPG sensor; processing the signal produced by the PPG sensor via at least one processor to determine a statistical distribution of a group of consecutive peaks in the signal; determining via the at least one processor that the device is being worn if the statistical distribution of the group of consecutive peaks in the signal is consistent with R-R intervals of a living person or that the device is not being worn if the statistical distribution of the group of consecutive peaks in the signal is not consistent with R-R intervals of a living person; and autonomously adjusting an adjustment mechanism of the biometric monitoring device responsive to the determination that the device is being worn. - View Dependent Claims (2, 3, 4, 5, 12, 13, 17, 19)
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6. A method of generating a physiological assessment of a subject wearing a biometric monitoring device, wherein the biometric monitoring device includes a PPG sensor, the method comprising:
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receiving a signal produced by the PPG sensor comprising an AC component and a DC component; processing the signal produced by the PPG sensor via at least one processor to determine an intensity of the DC component of the signal produced by the PPG sensor; determining via the at least one processor that the device is being worn if the intensity of the DC component of the signal produced by the PPG sensor is within a first predetermined range; and generating the physiological assessment of the subject in which first data associated with the signal received from the PPG sensor while the device is being worn is given a greater weight in generating the physiological assessment than second data associated with the signal received from the PPG sensor while the device is not being worn. - View Dependent Claims (7, 8, 9, 10, 11)
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14. A method of generating a physiological assessment of a subject wearing a biometric monitoring device, wherein the biometric monitoring device includes a PPG sensor, the method comprising:
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receiving a signal produced by the PPG sensor; processing the signal produced by the PPG sensor via at least one processor to determine a statistical distribution of a group of consecutive peaks in the signal; determining via the at least one processor that the device is not being worn if the statistical distribution of the group of consecutive peaks in the signal is not consistent with R-R intervals of a living person; and generating the physiological assessment of the subject in which first data associated with the signal produced by the PPG sensor while the device is not being worn is not included or is provided a lesser weight in generating the physiological assessment responsive to the determination that the device is not being worn. - View Dependent Claims (15, 16, 18, 20)
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Specification