Activating and deactivating sensors for dead reckoning
First Claim
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1. A mobile device comprising:
- an inertial sensor configured to provide inertial sensor data;
a processing device; and
a storage device storing computer-executable instructions which, when executed by the processing device, cause the processing device to;
identify that the mobile device is within an entrance anchor location associated with a dead zone;
activate the inertial sensor in response to arrival of the mobile device at the entrance anchor location;
identify that the mobile device is within an exit anchor location associated with the dead zone;
determine that the mobile device has moved a particular distance away from the exit anchor location; and
deactivate the inertial sensor in response to determining that the mobile device has moved the particular distance away from the exit anchor location and has not re-entered the dead zone.
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Abstract
An identification is made as to when a device is at an anchor location, which can be a proximity zone along an edge of a dead zone or a location where a signal from a beacon is detected. In response to the device being at the anchor location, one or more inertial sensors can be activated and data from the one or more inertial sensors collected to determine a position of the device using dead reckoning. Alternatively, in response to the device being at the anchor location, a determination is made as to when to deactivate one or more inertial sensors from which data is collected to determine the position of the device using dead reckoning.
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Citations
20 Claims
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1. A mobile device comprising:
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an inertial sensor configured to provide inertial sensor data; a processing device; and a storage device storing computer-executable instructions which, when executed by the processing device, cause the processing device to; identify that the mobile device is within an entrance anchor location associated with a dead zone; activate the inertial sensor in response to arrival of the mobile device at the entrance anchor location; identify that the mobile device is within an exit anchor location associated with the dead zone; determine that the mobile device has moved a particular distance away from the exit anchor location; and deactivate the inertial sensor in response to determining that the mobile device has moved the particular distance away from the exit anchor location and has not re-entered the dead zone. - View Dependent Claims (2, 3, 4)
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5. A mobile device comprising:
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an inertial sensor configured to provide inertial sensor data; a processing device; and a storage device storing computer-executable instructions which, when executed by the processing device, cause the processing device to; identify that the mobile device is at a first anchor location, the first anchor location being associated with a proximity zone of a dead zone; activate the inertial sensor in response to the mobile device being at the first anchor location; collect data from the inertial sensor to determine a position of the mobile device using dead reckoning; identify when the mobile device is at a second anchor location, the second anchor location being associated with the proximity zone of the dead zone or with a second proximity zone of the dead zone; determine that the mobile device has left the dead zone; and provided a threshold amount of time has lapsed after the mobile device arrived at the second anchor location, deactivate the inertial sensor. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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identifying that a device is within an entrance anchor location associated with a dead zone; activating an inertial sensor of the device in response to arrival of the device at the entrance anchor location; identifying that the device has passed through an exit anchor location associated with the dead zone and is no longer within the dead zone; determining that the device has moved a particular distance away from the exit anchor location; and deactivating the inertial sensor in response to the device having moved the particular distance away from the exit anchor location and no longer being within the dead zone. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification