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US 2017/0281013 A1Published application
Compressive sensing sparse sampling photoplethysmogram (ppg) measurement
AssigneeIntel Corporation
InventorsVenkat Natarajan, Deeksha Dadhich, Kumar Ranganathan
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Abstract
A photoplethysmogram (PPG) measurement includes the use of compressive sensing based on samples generated in accordance with a fixed pattern. A pulse oximeter circuit can drive an LED according to the fixed pattern to create a compressive sensing sample matrix of sparse measurements. The fixed pattern can be a binary progression. The PPG signal reconstruction can include zero padding the sample matrix.
Claims24
A pulse oximeter system, comprising:
- a light emitting diode (LED) to emit light pulses for a photoplethysmogram (PPG) measurement;
- a photodetector to generate measurements based on detection of light interference of the LED light pulses with a subject;
- and
- an interface circuit to control toggling of the light pulses for the LED in accordance with a fixed schedule to cause the photodetector to generate measurements for PPG signal reconstruction based on compressive sensing of the fixed schedule light pulses.
1 more element
A pulse oximeter circuit, comprising:
- a driver to couple to a light emitting diode (LED), and cause the LED to emit light pulses for photoplethysmogram (PPG) measurement, including to control toggling of the light pulses in accordance with a fixed schedule;
- and
- an analog to digital converter (ADC) to couple to a photodetector to generate a series of digital measurement data based on detection by the photodetector of light interference of the LED light pulses with a subject;
- wherein the photodetector to generate the series of digital measurement data in accordance with the fixed schedule, and the series of digital measurement data for compressive sensing reconstruction of a PPG signal.
1 more element
A method for photoplethysmogram (PPG) measurement, comprising:
- toggling a light emitting diode (LED) in accordance with a fixed schedule to cause the LED to emit light pulses to a subject for PPG measurement;
- measuring light interference of the LED light pulses with the subject;
- generating a series of measurement data corresponding to the fixed schedule, the series of measurements corresponding to entries in a sparse sample matrix;
- transmitting the series of measurements for compressive sensing reconstruction of a PPG signal.
1 more element
Dependencies are inferred from the claim text.