Methods and systems for driver identification
First Claim
1. A method of determining a position of a mobile device in a vehicle, the method comprising:
- obtaining accelerometer data collected using an accelerometer in the mobile device;
obtaining angular orientation data collected using a gyroscope in the mobile device;
determining a first time span associated with a user of the mobile device entering the vehicle;
determining an entry side for the mobile device based on angular orientation data collected during the first time span, wherein determining the entry side of the mobile device comprises;
providing acceleration data and yaw data, wherein a y-axis of the mobile device is aligned to a longitudinal axis of the vehicle and an x-axis of the mobile device is aligned to a transverse axis that is perpendicular to both the longitudinal axis of the vehicle and acceleration due to gravity;
selecting a subset of the provided acceleration data and yaw data, wherein the subset is associated with the first time span;
predicting the entry side for the mobile device using the subset and an integral method, wherein the integrated method comprises;
determining a sign of an integral of the subset projected onto the x-axis of the mobile device and calculated over the first time span;
predicting that the mobile device enters on the right side of the vehicle if the sign of the integral of the subset is positive;
predicting that the mobile device enters on the left side of the vehicle if the sign of the integral of the subset is negative;
selecting a second subset of the provided acceleration data and yaw data, wherein the second subset is associated with the second time span;
determining a sign of an integral of the second subset projected onto the x-axis of the mobile device and calculated over the second time span;
predicting that the mobile device exits on the left side of the vehicle if the sign of the integral of the second subset is positive; and
predicting that the mobile device exits on the right side of the vehicle if the sign of the integral of the second subset is negative;
selecting a second subset of the provided acceleration data and yaw data, wherein the second subset is associated with a driving time of the driving event; and
predicting a transverse position of the mobile device in the vehicle during the driving tine using a centripetal acceleration method;
detecting an acceleration event;
aligning the mobile device to a reference frame of the vehicle;
determining a front/back location of the mobile device;
detecting a braking event;
determining a second time span associated with the user of the mobile device exiting the vehicle;
determining an exit side for the mobile device based on angular orientation data collected during thesecond time span; and
determining the position of the mobile device during at least a portion of a driving event occurring between the first time span and the second time span.
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Accused Products
Abstract
A method of determining a position of a mobile device in a vehicle includes obtaining accelerometer data collected using a accelerometer in the mobile device, obtaining angular orientation data collected using a gyroscope in the mobile device, and determining a start time of a driving event. The method also includes determining an entry side for the mobile device prior to the driving event, detecting an acceleration event, aligning the mobile device to a reference frame of the vehicle, and determining a front/back location of the mobile device. The method further includes detecting a braking event, determining an end time of the driving event, determining an exit side for the mobile device after the driving event, and determining the position of the mobile device during at least a portion of the driving event.
52 Citations
8 Claims
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1. A method of determining a position of a mobile device in a vehicle, the method comprising:
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obtaining accelerometer data collected using an accelerometer in the mobile device; obtaining angular orientation data collected using a gyroscope in the mobile device; determining a first time span associated with a user of the mobile device entering the vehicle; determining an entry side for the mobile device based on angular orientation data collected during the first time span, wherein determining the entry side of the mobile device comprises; providing acceleration data and yaw data, wherein a y-axis of the mobile device is aligned to a longitudinal axis of the vehicle and an x-axis of the mobile device is aligned to a transverse axis that is perpendicular to both the longitudinal axis of the vehicle and acceleration due to gravity; selecting a subset of the provided acceleration data and yaw data, wherein the subset is associated with the first time span; predicting the entry side for the mobile device using the subset and an integral method, wherein the integrated method comprises; determining a sign of an integral of the subset projected onto the x-axis of the mobile device and calculated over the first time span; predicting that the mobile device enters on the right side of the vehicle if the sign of the integral of the subset is positive; predicting that the mobile device enters on the left side of the vehicle if the sign of the integral of the subset is negative; selecting a second subset of the provided acceleration data and yaw data, wherein the second subset is associated with the second time span; determining a sign of an integral of the second subset projected onto the x-axis of the mobile device and calculated over the second time span; predicting that the mobile device exits on the left side of the vehicle if the sign of the integral of the second subset is positive; and predicting that the mobile device exits on the right side of the vehicle if the sign of the integral of the second subset is negative; selecting a second subset of the provided acceleration data and yaw data, wherein the second subset is associated with a driving time of the driving event; and predicting a transverse position of the mobile device in the vehicle during the driving tine using a centripetal acceleration method; detecting an acceleration event; aligning the mobile device to a reference frame of the vehicle; determining a front/back location of the mobile device; detecting a braking event; determining a second time span associated with the user of the mobile device exiting the vehicle; determining an exit side for the mobile device based on angular orientation data collected during the second time span; and determining the position of the mobile device during at least a portion of a driving event occurring between the first time span and the second time span. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification