Confidence indicator for physiological measurements using a wearable sensor platform

• US 10,258,288 B2
• Filed: 05/23/2014
• Issued: 04/16/2019
• Est. Priority Date: 03/24/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Penders, Julien, Young, Alexander, Rosenthal, Noam, Fish, Ram, Wentink, Eva C.
• Primary Examiner(s): Kundu, Sujoy
• Assistant Examiner(s): A., L.
• Application Number:
  US14/286,846
• Publication Number:
  US 20150265217A1
• Time in Patent Office: 1,789 Days
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/0533 Measuring galvanic skin response
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/33 specially adapted for cooperation with other devices
• CPC Class Codes: A61B 5/681 Wristwatch-type devices
• CPC Class Codes: A61B 5/721 using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured
• CPC Class Codes: A61B 5/7221 Determining signal validity, reliability or quality A61B5/7207 and A61B5/7217 take precedence
• CPC Class Codes: A61B 5/7246 using correlation, e.g. template matching or determination of similarity
• CPC Class Codes: A61B 5/7405 using sound
• CPC Class Codes: A61B 5/743 Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots
• CPC Class Codes: A61B 5/7455 characterised by tactile indication, e.g. vibration or electrical stimulation
• CPC Class Codes: A61B 5/746 Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick

Abstract

Embodiments include a method and system for providing data to a user of a wearable sensor platform. The method may be performed by a least one software component executing on at least one processor. The method includes capturing data for the user using at least one sensor in the wearable sensor platform. The data includes physiological data and artifact data. The physiological data includes noise data therein. A confidence indicator for the data is determined based on at least one of the physiological data and the artifact data. A physiological data signal corresponding to the physiological data and the confidence indicator is provided to the user on the wearable device platform.

Claims

1. A method for providing physiological data to a user of a wearable sensor platform, comprising:

capturing data for the user using at least one sensor in the wearable sensor platform, the step of capturing the data including at least one of sensing physiological data captured by a physiological sensor of the at least one sensor and sensing artifact data captured by an artifact data sensor different from the physiological sensor, the physiological data including noise data therein;

determining a confidence indicator for the data based on at least one of the artifact data and the noise data; and

providing a physiological data signal corresponding to the physiological data and the confidence indicator to the user on the wearable sensor platform, the confidence indicator including at least one of a visual indicator, an audio indicator and a physical indicator, wherein the step of providing the physiological data signal and the confidence indicator further includes

providing a waveform corresponding to the physiological data signal and the confidence indicator, thereby indicating to the user a confidence level for the physiological data; and

wherein the visual indicator includes at least one of a region having a color corresponding to the visual confidence indicator, text having at least one of a particular color and a particular format, the waveform having a default line format if the confidence indicator is above a threshold, a null signal for a portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, a first color for the portion of the physiological data signal and a second color for an additional portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, a first line format for the portion of the physiological data signal and a line format for an additional portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, wherein the audio confidence indicator includes an audio alarm if the confidence indicator is below the threshold and wherein the physical confidence indicator includes a vibration of the wearable sensor platform if the confidence indicator is below the threshold.

2. The method of claim 1 wherein the confidence indicator denotes whether a correlation between the artifact data and the physiological data is above the threshold.

3. The method of claim 1 wherein the step of determining the confidence indicator further includes:

determining a first confidence indicator for the physiological data.

4. The method of claim 1 wherein the artifact confidence indicator denotes whether a correlation between the artifact data and the physiological data is above the threshold.

5. The method of claim 1 wherein the step of determining the confidence indicator further includes:

providing a total confidence indicator based on the first confidence indicator and the artifact confidence indicator.

6. The method of claim 1 wherein the step of providing the physiological data signal and the confidence indicator to the user further includes:

providing an estimated physiological data noise using at least one of the physiological data and the artifact data; and

providing the physiological data signal based on the physiological data and the estimated physiological data noise.

7. The method of claim 1 wherein the artifact data includes additional motion data, the additional motion data including motion of the wearable sensor platform with respect to the skin of the user.

8. A wearable sensor platform comprising:

a band;

a plurality of sensors coupled to the band, the plurality of sensors for capturing data for a user, the data including physiological data captured by a physiological sensor of the plurality of sensors and artifact data captured using another sensor of the plurality of sensors, the artifact data excluding the physiological data the physiological data including noise data therein; and

a processor coupled to the plurality of sensors, the processor configured to receive the physiological data and the artifact data, correlate the artifact data with the physiological data to determine an artifact confidence indicator, determine a confidence indicator for the data based on at least one of the physiological data and the artifact data such that the confidence indicator includes the artifact confidence indicator, and provide a physiological data signal corresponding to the physiological data and the confidence indicator to the user via the wearable sensor platform, thereby indicating to the user a confidence level for the physiological data; and

at least one of a display for providing the confidence indicator if the confidence indicator is a visual indicator, a speaker for providing the confidence indicator if the confidence indicator is an audio indicator and a physical driver if the confidence indicator is a physical indicator;

wherein the visual confidence indicator includes at least one of a region having a color corresponding to the visual confidence indicator, text having at least one of a particular color and a particular format corresponding to the visual confidence indicator, a waveform having a default line format if the confidence indicator is above a threshold, a null signal for a portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, a first color for the portion of the physiological data signal and a second color for an additional portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, a first line format for the portion of the physiological data signal and a line format for an additional portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, wherein the audio confidence indicator includes an audio alarm if the confidence indicator is below the threshold and wherein the physical confidence indicator includes a vibration of the wearable sensor platform if the confidence indicator is below the threshold.

9. The wearable sensor platform of claim 8 wherein the artifact confidence indicator denotes whether a correlation between the artifact data and the physiological data is above the threshold.

10. The wearable sensor platform of claim 8 wherein the processor further determines the confidence indicator by determining an additional confidence indicator for the physiological data.

11. The wearable sensor platform of claim 10 wherein the processor further provides a total confidence indicator based on the first confidence indicator and the additional confidence indicator.

12. The wearable sensor platform of claim 8 wherein the display depicts the waveform corresponding to the physiological data signal and the confidence indicator.

13. The wearable sensor platform of claim 8 wherein the processor provides an estimated noise using at least one of the physiological data and the artifact data and provides the physiological data signal based on the physiological data and the estimated noise.

14. The wearable sensor platform of claim 8 wherein the artifact data includes additional motion data, the additional motion data including motion of the wearable sensor platform with respect to the skin of the user.

15. An executable software product stored on a nontransitory computer-readable storage medium containing program instructions for providing physiological data to a user of a wearable sensor platform, the program instructions for:

receiving data for a user, the data captured by at least one sensor in the wearable sensor platform, the data capture including at least one of sensing physiological data captured by a physiological sensor of the at least one sensor and sensing artifact data captured by an artifact data sensor different from the physiological sensor, the physiological data including noise data therein;

determining a confidence indicator for the data based on at least one of the noise data and the artifact data; and

providing a physiological data signal corresponding to the physiological data and the confidence indicator to the user on the wearable sensor platform, the confidence indicator including at least one of a visual indicator, an audio indicator and a physical indicator, wherein the step of providing the physiological data signal and the confidence indicator further includes

providing a waveform corresponding to the physiological data signal and the confidence indicator, thereby indicating to the user a confidence level for the physiological data; and

wherein the visual indicator includes at least one of a region having a color corresponding to the visual confidence indicator, text having at least one of a particular color and a particular format, the waveform having a default line format if the confidence indicator is above a threshold, a null signal for a portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, a first color for the portion of the physiological data signal and a second color for an additional portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, a first line format for the portion of the physiological data signal and a line format for an additional portion of the physiological data signal if the confidence indicator is below the threshold for the portion of the physiological signal, wherein the audio confidence indicator includes an audio alarm if the confidence indicator is below the threshold and wherein the physical confidence indicator includes a vibration of the wearable sensor platform if the confidence indicator is below the threshold.

16. The executable software product of claim 15 wherein the confidence indicator denotes whether a correlation between the artifact data and the physiological data is above the threshold.

17. The executable software product of claim 15 wherein the step of determining the confidence indicator further includes:

determining a first confidence indicator for the physiological data.

18. The executable software product of claim 15 wherein the artifact data includes additional motion data, the additional motion data including motion of the wearable sensor platform with respect to the skin of the user.