Senionlab Ab

Jonas Callmer

Per Skoglar

Christian Lundquist

David Tornqvist

Fredik Gustafsson

David Törnqvist

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).

Method and device for indoor position resolution

The present invention relates to a method for positioning a user inside a building, wherein the user has a user carried device () and the user carried device () is provided with a direction sensor () and a movement sensor (). The method comprises the steps of providing the user carried device with a vector map () of the building, wherein the vector map () comprises vectors and nodes representing possible movement paths for the user in the building; determining a starting point in the vector map representing a first position of the user; receiving movement information from the movement sensor () regarding movement of the user in the building; receiving direction information from the direction sensor () regarding the direction of the movement of the user; and estimating a new position of the user based on the vector map, the movement information and the direction information.

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Linkoping, Sweden

Jonas Callmer