Sandvik Mining and Construction Oy

Nordic Inertial Oy

Jussi Collin

Jussi Puura

Lauri Siivonen

Tomi Von Essen

Tuukka Vainio

A declination of an object, an orientation of the object and/or a position of the object can be determined using a gyroscope. In this regard, the gyroscope can be mounted to the object. The gyroscope can be pivoted. An undetermined pivoting of the object about an axis with the gyroscope can be measured. A component of a rotation of Earth acting on the gyroscope can be determined using the undetermined pivoting and the pivoting angular velocity (w). At least one parameter set can be determined. The pivoting angular velocity (w) of the gyroscope about the swivel axis with a second sensor can be determined.

Absolute heading estimation with constrained motion

A method for positioning a mobile object in an underground tunnel includes the steps of determining horizontal progression of a mobile object in an underground tunnel from a preceding position estimate or an initial position of the mobile object; determining horizontal position of the mobile object on the basis of a floor model of the tunnel and the estimated horizontal progression of the mobile object; and generating a three-dimensional position indicator on the basis of the horizontal position of the mobile object and a three-dimensional model of the tunnel.

Growing community of inventors

Akaa, Finland

Jussi Collin