Method and device for indoor position resolution

摘要

The present invention relates to a system and method for managing energy consumption in a multi-sensor user-carried device during indoor navigation. In an embodiment of the invention, the device calculates a motion mode, a location mode, or an operational mode, each of which is used to modify sensor behavior, e.g., sampling rate, and/or CPU load, e.g., filtering and modeling complexity. The motion mode describes the manner in which the user is moving (standing still, walking, passive transport for example), the location mode describes a feature of the user's location (near level change or intersection for example), and the operational mode describes the manner in which the user is interacting with the device (holding and monitoring, holding and not monitoring, not holding for example).

主权项

1. A method for managing power consumption of a portable battery-powered user carried device, wherein the user carried device includes a direction sensor, a movement sensor and a radio receiver and an application for using the sensors for indoor positioning of the user carried device, the method comprising:
determining a motion mode based on the information received from a first sensor selected from the direction sensor, the movement sensor and the radio receiver, wherein the motion mode describes a type of motion exhibited by the user carried device; and based on the determined motion mode, controlling a sampling rate of a second sensor so as to reduce power consumption, the second sensor being selected from the direction sensor, the movement sensor and the radio receiver, the second sensor being different from the first sensor; and selecting at least one of an operational mode and a location mode to be determined; and determining the operational mode based on the information received from one of the sensors, wherein the operational mode identifies a manner in which the user is operating the user carried device, and based on the determined operational mode, controlling a sampling rate of one or more of the sensors so as to reduce power consumption; and determining the location mode based on the information received from one of the sensors, wherein the location mode identifies a location of the user, and based on the determined location mode, controlling a sampling rate of one or more of the sensors so as to reduce power consumption.