Abstract:
A computer-implemented method for biological signal recording, including modulating a sampled evoked biological signal with a carrier sequence code resulting in a modulated evoked biological signal. The carrier sequence code has an autocorrelation function. The method includes demodulating the modulated evoked biological signal by calculating a convolution of the modulated evoked biological signal with the carrier sequence code resulting in an evoked biological signal spectrum. The evoked biological signal spectrum has a peak to sideband ratio as a function of the carrier sequence code. The method includes calculating deviations between each element of the sampled evoked biological signal and the peak to sideband ratio and filtering noise artifacts from the sampled evoked biological signal based on the deviations. Peak to sideband ratios may also be optimized by varying the sampling rate.
Abstract:
Methods of assessing driver behavior include monitoring vehicle systems and driver monitoring systems to accommodate for a driver's slow reaction time, attention lapse and/or alertness. When it is determined that a driver is drowsy, for example, the response system may modify the operation of one or more vehicle systems. The systems that may be modified include: visual devices, audio devices, tactile devices, antilock brake systems, automatic brake prefill systems, brake assist systems, auto cruise control systems, electronic stability control systems, collision warning systems, lane keep assist systems, blind spot indicator systems, electronic pretensioning systems and climate control systems.
Abstract:
A system and method for processing photoplethysmography (PPG) signals in a vehicle. The system and method include determining a plurality of consistent PPG waveform signals based on a plurality of PPG waveform signals and electronically aggregating the plurality of consistent PPG waveform signals into a PPG measurement signal. The system and method also include determining a plurality of noise waveform signals based on a plurality of pressure measurement signals and electronically aggregating the plurality of noise waveform signals into a motion artifacts measurement signal. The system and method further include processing a refined PPG signal to suppress motion artifacts from the PPG measurement signal by filtering a segment of the PPG measurement signal that is attributed to the motion artifacts represented within the motion artifacts measurement signal.
Abstract:
A method for controlling vehicle systems includes receiving monitoring information from one or more monitoring systems and determining a plurality of driver states based on the monitoring information from the one or more monitoring systems. The method includes determining a combined driver state based on the plurality of driver states and modifying control of one or more vehicle systems based on the combined driver state.
Abstract:
A method and system for controlling one or more functions associated with a vehicle display includes providing a steering wheel having a left zone and a right zone. The method includes determining a left contact value and a right contact value based on at least one of a plurality of sensors of the steering wheel. Further, the method includes comparing the left contact value to a left contact threshold that maximizes contact of a left hand with the steering wheel within the left zone and comparing the right contact value to a right contact threshold that maximizes contact of a right hand with the steering wheel within the right zone. Upon determining a non-driving passenger is present in the vehicle, the one or more functions associated with the vehicle display are enabled or disabled.
Abstract:
A system and method for vehicle control that includes receiving an image from an imaging system. The system and method also includes classifying the traffic indicator having the color portion based on executing “You Only Look Once” (YOLO) object detection of the image and localizing the traffic indicator having the color portion with respect to a vehicle based on executing the YOLO object detection of the image. The system and method additionally includes performing “Binary Large Object” (blob) analysis based on red color components and green color components of the image to determine a color of the color portion of the traffic indicator. The system and method further includes controlling a vehicle system of the vehicle based on the classification of the traffic indicator, the location of the traffic indicator with respect to the vehicle, and the color of the color portion of the traffic indicator.
Abstract:
A computer-implemented method for detecting a head pose in a vehicle including receiving images of a vehicle occupant located in the vehicle from an imaging device and selecting facial feature points from a plurality of facial feature points extracted from the images. The method includes calculating a head pose point based on normalizing the selected facial feature points, determining the head pose based on a change in position of the head pose point over a period of time T, and controlling one or more vehicle systems of the vehicle based on the head pose.
Abstract:
A computer-implemented method and system for controlling a vehicle display in a vehicle. The method includes receiving contact data from a steering wheel, the contact data indicating driver contact with the steering wheel. The method includes determining a head vector based on information received from a head tracking device, the head vector defining a line originating from a head reference point, the line extending in a direction towards a viewing point. The method includes determining a fixation duration towards the viewing point based on the head vector and the information received from the head tracking device. Further, the method includes controlling the vehicle display based on the contact data, the head vector, and the fixation duration.
Abstract:
Methods of assessing driver behavior include monitoring vehicle systems and driver monitoring systems to accommodate for a driver's slow reaction time, attention lapse and/or alertness. When it is determined that a driver is drowsy, for example, the response system may modify the operation of one or more vehicle systems. The systems that may be modified include: visual devices, audio devices, tactile devices, antilock brake systems, automatic brake prefill systems, brake assist systems, auto cruise control systems, electronic stability control systems, collision warning systems, lane keep assist systems, blind spot indicator systems, electronic pretensioning systems and climate control systems.
Abstract:
Methods of assessing driver behavior include monitoring vehicle systems and driver monitoring systems to accommodate for a slow reaction time, attention lapse and/or alertness of a driver. When it is determined that a driver is drowsy, for example, the response system may modify the operation of one or more vehicle systems. The response system can modify the control of two or more systems simultaneously in response to driver behavior.