DATA INTEGRITY
First Claim
1. A hydration monitoring method comprising:
- receiving photoplethysmographic (PPG) pulse data from a subject;
selecting a subset of the PPG pulse data from the subject, the subset of PPG pulse data satisfying a data integrity condition; and
determining changes in tissue volume and changes in vascular volume within body tissue of the subject based on the selected subset of PPG pulse data.
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Accused Products
Abstract
Implementations disclosed herein provide a monitoring technology. In one implementation, a monitoring system measures whole body biometric levels by analysis of changes in vascular volume caused by pulsatile pressure waves and in tissue volume in response to the pulsatile pressure. The monitoring system includes a monitoring device, which uses a light-based measurement technique to measure biometric levels during different activities and at rest. A light source operatively connected to a light sensor, transmits light, reflectively or transmissively, through tissue. The light sensor detects absorption of the light. Based on wavelength measurements of the detected light, the monitoring device produces a PPG waveform representing characteristic effects of certain physiological parameters. PPG pulse data is selected that satisfies a data integrity condition. Based on analysis of the selected PPG pulse data, the monitoring device computes a biometric. Biometric data results can then be selected that satisfy a result integrity condition.
13 Citations
32 Claims
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1. A hydration monitoring method comprising:
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receiving photoplethysmographic (PPG) pulse data from a subject; selecting a subset of the PPG pulse data from the subject, the subset of PPG pulse data satisfying a data integrity condition; and determining changes in tissue volume and changes in vascular volume within body tissue of the subject based on the selected subset of PPG pulse data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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16. A biometric monitoring method comprising:
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receiving photoplethysmographic (PPG) pulse data from a subject; selecting a subset of the PPG pulse data from the subject, the subset of PPG pulse data satisfying a data integrity condition; determining changes in tissue volume and changes in vascular volume within body tissue of the subject based on the selected PPG pulse data; computing a biometric metric based on the determined changes in tissue volume and changes in vascular volume within the body tissue of the subject; and communicating the computed biometric metric of the body tissue of the subject via a communications interface.
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17. One or more computer-readable storage media encoding computer-executable instructions for executing on a computer system a computer process, the computer process comprising:
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receiving photoplethysmographic (PPG) pulse data from a subject; selecting a subset of the PPG pulse data from the subject, the subset of PPG pulse data satisfying a data integrity condition; and determining changes in tissue volume and changes in vascular volume within body tissue of the subject based on the selected subset of PPG pulse data.
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32. A system comprising:
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a processor configured to receive photoplethysmographic (PPG) pulse data from a subject, select a subset of the PPG pulse data from the subject, the subset of PPG pulse data satisfying a data integrity condition, determine changes in tissue volume and changes in vascular volume within body tissue of the subject based on the selected PPG pulse data, compute a biometric metric based on the determined changes in tissue volume and changes in vascular volume within the body tissue of the subject; and a communications interface configured to communicate the computed hydration metric of the body tissue of the subject.
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Specification