System and method for capturing and decontaminating photoplethysmopgraphy (PPG) signals in a vehicle
First Claim
1. A computer-implemented method for processing photoplethysmography (PPG) signals in a vehicle, comprising:
- receiving a plurality of PPG waveform signals from a plurality of optical sensors;
processing a PPG measurement signal based on the plurality of PPG waveform signals, wherein processing the PPG measurement signal includes aggregating the plurality of PPG waveform signals that are received from the plurality of optical sensors into the PPG measurement signal;
receiving a noise waveform signal from at least one of;
a seat assembly sensor, a vehicle sensor, and a vehicle system;
processing a motion artifacts measurement signal based on the noise waveform signal;
processing a refined PPG signal to suppress the motion artifacts measurement signal from the PPG measurement signal, wherein processing the refined PPG signal includes filtering a segment of the PPG measurement signal that is attributed to motion artifacts represented within the motion artifacts measurement signal; and
determining at least one driver state associated with a driver of the vehicle based on the refined PPG signal and controlling at least one vehicle system of the vehicle based on the driver state associated with the driver.
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Accused Products
Abstract
A system and method for processing photoplethysmography (PPG) signals in a vehicle. The system and method include receiving a PPG waveform signal from an optical sensor. The system and method also include processing a PPG measurement signal based on the PPG waveform signal. The system and method additionally include receiving a noise waveform signal from at least one of: a seat assembly sensor, a vehicle sensor, and a vehicle system. Additionally, the system and method include processing a motion artifacts measurement signal based on the noise waveform signal. The system and method further include processing a refined PPG signal to suppress the motion artifacts measurement signal from the PPG measurement signal.
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Citations
20 Claims
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1. A computer-implemented method for processing photoplethysmography (PPG) signals in a vehicle, comprising:
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receiving a plurality of PPG waveform signals from a plurality of optical sensors; processing a PPG measurement signal based on the plurality of PPG waveform signals, wherein processing the PPG measurement signal includes aggregating the plurality of PPG waveform signals that are received from the plurality of optical sensors into the PPG measurement signal; receiving a noise waveform signal from at least one of;
a seat assembly sensor, a vehicle sensor, and a vehicle system;processing a motion artifacts measurement signal based on the noise waveform signal; processing a refined PPG signal to suppress the motion artifacts measurement signal from the PPG measurement signal, wherein processing the refined PPG signal includes filtering a segment of the PPG measurement signal that is attributed to motion artifacts represented within the motion artifacts measurement signal; and determining at least one driver state associated with a driver of the vehicle based on the refined PPG signal and controlling at least one vehicle system of the vehicle based on the driver state associated with the driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for processing photoplethysmography (PPG) signals in a vehicle, comprising:
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a memory storing instructions when executed by a processor cause the processor to; receive a plurality of PPG waveform signals from a plurality of optical sensors; process a PPG measurement signal based on the plurality of PPG waveform signals, wherein processing the PPG measurement signal includes aggregating the plurality of PPG waveform signals that are received from the plurality of optical sensors into the PPG measurement signal; receive a noise waveform signal from at least one of;
a seat assembly sensor, a vehicle sensor, and a vehicle system and processes a motion artifacts measurement signal based on the noise waveform signal;process a refined PPG signal to suppress the motion artifacts measurement signal from the PPG measurement signal, wherein processing the refined PPG signal includes filtering a segment of the PPG measurement signal that is attributed to motion artifacts represented within the motion artifacts measurement signal; and determine at least one driver state associated with a driver of the vehicle based on the refined PPG signal and control at least one vehicle system of the vehicle based on the driver state associated with the driver. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable storage medium storing instructions that when executed by a computer, which includes a processor perform a method comprising:
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receiving a plurality of PPG waveform signals from a plurality of optical sensors; processing a PPG measurement signal based on the plurality of PPG waveform signals, wherein processing the PPG measurement signal includes aggregating the plurality of PPG waveform signals that are received from the plurality of optical sensors into the PPG measurement signal; receiving a noise waveform signal from at least one of;
a seat assembly sensor, a vehicle sensor, and a vehicle system;processing a motion artifacts measurement signal based on the noise waveform signal; processing a refined PPG signal to suppress the motion artifacts measurement signal from the PPG measurement signal, wherein processing the refined PPG signal includes filtering a segment of the PPG measurement signal that is attributed to motion artifacts represented within the motion artifacts measurement signal; and determining at least one driver state associated with a driver of the vehicle based on the refined PPG signal and controlling at least one vehicle system of the vehicle based on the driver state associated with the driver. - View Dependent Claims (18, 19, 20)
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Specification