Determining user's seating position in vehicle using barometer and motion sensors
First Claim
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1. A method of determining a position of an electronic device located within a moving vehicle, the method comprising:
- determining that the electronic device is located in a cabin of the vehicle based on first motion data provided by motion sensors of the electronic device;
determining an average direction of motion of the electronic device using the first motion data;
determine an average direction of motion of the electronic device over time;
dividing an area representing the cabin into a front-right quadrant, a front-left quadrant, a back-right quadrant, and a back-left quadrant, based on the average direction of motion of the electronic device;
receiving second motion data from the motion sensors;
determining, using the second motion data, that the vehicle is accelerating;
determining a rate of change of acceleration for the vehicle;
receiving, from a barometer of the electronic device, first air pressure data within the vehicle;
determining a rate of change of the air pressure within the vehicle based on the first air pressure data for a first time period, wherein the first time period starts after the vehicle starts accelerating and overlaps in time with a second time period during which the vehicle is accelerating;
comparing the rate of change of the air pressure to the rate of change of the acceleration to determine that a reduction in air pressure within the vehicle at a beginning of the first time period was caused by the acceleration;
determining that the device is located in the front-right quadrant based on a direction of the acceleration that caused the reduction in the air pressure being in a direction of the front-right quadrant; and
changing a configuration of the electronic device.
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Abstract
A handheld electronic device determines its position in a moving vehicle based on changes in air pressure that occur when the vehicle undergoes acceleration. Based on a direction of acceleration that correlates to a subsequent reduction in air pressure, a determination is made as to whether the device is in the front left, front right, back left, or back right quadrant of the vehicle. The device then alters its configuration based on the quadrant in which it is located.
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Citations
20 Claims
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1. A method of determining a position of an electronic device located within a moving vehicle, the method comprising:
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determining that the electronic device is located in a cabin of the vehicle based on first motion data provided by motion sensors of the electronic device; determining an average direction of motion of the electronic device using the first motion data; determine an average direction of motion of the electronic device over time; dividing an area representing the cabin into a front-right quadrant, a front-left quadrant, a back-right quadrant, and a back-left quadrant, based on the average direction of motion of the electronic device; receiving second motion data from the motion sensors; determining, using the second motion data, that the vehicle is accelerating; determining a rate of change of acceleration for the vehicle; receiving, from a barometer of the electronic device, first air pressure data within the vehicle; determining a rate of change of the air pressure within the vehicle based on the first air pressure data for a first time period, wherein the first time period starts after the vehicle starts accelerating and overlaps in time with a second time period during which the vehicle is accelerating; comparing the rate of change of the air pressure to the rate of change of the acceleration to determine that a reduction in air pressure within the vehicle at a beginning of the first time period was caused by the acceleration; determining that the device is located in the front-right quadrant based on a direction of the acceleration that caused the reduction in the air pressure being in a direction of the front-right quadrant; and changing a configuration of the electronic device. - View Dependent Claims (2)
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3. A computing device comprising:
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a processor; a motion sensor; a barometer; a memory including instruction operable to be executed by the processor to configure the processor to; determine a first change in acceleration of the computing device based on first motion data from the motion sensor, wherein the computing device is located in a vehicle; determine, using the barometer, a first pressure value corresponding to air pressure within the vehicle; compare the first pressure value to a reference pressure value for the vehicle to determine a first change in air pressure; determine a first correlation between the first change in acceleration and the first change in air pressure following the first change in acceleration; determine a position of the computing device in the vehicle based on the first correlation; and execute an action based on the position of the computing device in the vehicle. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. A non-transitory computer-readable storage medium storing processor-executable instructions for controlling a computing device, comprising program code to configure the computing device to:
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determine a first change in acceleration based on first motion data from a motion sensor, wherein the motion sensor is located in a vehicle; determine, using a barometer located in the vehicle, a first pressure value corresponding to air pressure within the vehicle; compare the first pressure value to a reference pressure value for the vehicle to determine a first change in air pressure; determine a first correlation between the first change in acceleration and the first change in air pressure following the first change in acceleration; determine a position of the barometer in the vehicle based on the first correlation; and execute an action based on the position of the barometer in the vehicle. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification