Self-aligning sensor array
First Claim
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1. A method for self-aligning a sensor array with respect to blood vessel or other targeted area of a user, comprising:
- providing an optical sensor array, the optical sensor array comprising an array of discrete optical sensors arranged on a band, such that the optical sensor array straddles the blood vessel of a user, wherein each of the discrete optical sensors has a triangular configuration comprising a single photodetector surrounded by three light sources that emit light of a different wavelength that is detected by the single photodetector;
performing, by a processor, a sensor calibration of the optical sensor array at periodic intervals during operation to determine which one of the discrete sensors has an optimum position over the blood vessel, the sensor calibration comprising;
activating each of the discrete optical sensors to generate respective signals;
designating as the optimal discrete sensor a particular discrete optical sensor producing a highest signal-to-noise ratio; and
using the optimal sensor to collect physiological data of the user.
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Abstract
Exemplary embodiments for self-aligning a sensor array with respect to blood vessel of a user comprise: determining an optimal sensor in a sensor array comprising an array of discrete sensors arranged on a band such that the sensor array straddles or otherwise addresses a blood vessel or other targeted area of a user by activating each of the discrete sensors to generate respective signals; designating as the optimal discrete sensor a particular discrete sensor producing a highest signal-to-noise ratio; and using the optimal sensor to collect physiological data of the user.
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Citations
20 Claims
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1. A method for self-aligning a sensor array with respect to blood vessel or other targeted area of a user, comprising:
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providing an optical sensor array, the optical sensor array comprising an array of discrete optical sensors arranged on a band, such that the optical sensor array straddles the blood vessel of a user, wherein each of the discrete optical sensors has a triangular configuration comprising a single photodetector surrounded by three light sources that emit light of a different wavelength that is detected by the single photodetector; performing, by a processor, a sensor calibration of the optical sensor array at periodic intervals during operation to determine which one of the discrete sensors has an optimum position over the blood vessel, the sensor calibration comprising; activating each of the discrete optical sensors to generate respective signals; designating as the optimal discrete sensor a particular discrete optical sensor producing a highest signal-to-noise ratio; and using the optimal sensor to collect physiological data of the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A self-aligning sensor array, comprising:
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an optical sensor array of discrete optical sensors arranged on a band such that the optical sensor array straddles or otherwise addresses a blood vessel of a user, wherein each of the discrete optical sensors has a triangular configuration comprising a single photodetector surrounded by three light sources that emit light of a different wavelength that is detected be the single photodetector; a processor coupled to the sensor array that performs a sensor calibration of the optical sensor array at periodic intervals during operation to determine which one of the discrete sensors has an optimum position over the blood vessel, the processor configured to; activate each of the discrete optical sensors to generate respective signals; designate as the optimal discrete sensor a particular discrete optical sensor producing a highest signal-to-noise ratio; and use the optimal sensor to collect physiological data of the user. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification