Smartphone localization inside a moving car for prevention of distracted driving
2019
This paper discusses a novel algorithm to automatically identify the position of a smartphone inside a moving vehicle, so as to detect whether it is being used by the driver or just a passenger of the car. This detection has applications to the prevention of distracted driving and can be used to automatically disable phone features such as texting when the phone is located in the driver’s seat. The challenges in the smartphone localisation problem come from the need to entirely use only accelerometers and gyroscopes already available on a typical phone, and the need to allow for any unknown 3-dimensional orientation of the phone while being carried by the driver or passenger of the car. First, the phone’s real-time orientation is determined by identifying the vehicle’s longitudinal and vertical axes in the phone reference frame. This provides the rotational matrix for conversion of accelerations and angular velocities measured on the phone to accelerations and angular velocities about the car axes. Next, ...
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