Activating and deactivating sensors for dead reckoning

摘要

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.

主权项

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 a delay has elapsed since identifying that the mobile device is within the exit anchor location, the delay comprising a threshold amount of time during which the mobile device is not within the dead zone; and deactivate the inertial sensor in response to determining that the delay has elapsed and the device has not re-entered the dead zone.