Position sensing system for a moving object

Details Position sensing system for a moving object Position sensing system for a moving object

G - Physics

01

S

340/135.1

G01S 5/16 (2006.01) G01S 3/784 (2006.01)

Patent

CA 1268525

A B S T R A c T In an electrooptic position sensing system for an object (11) moving in a plane at least one light source (10) is fixedly disposed such that the radiationfield of the light source covers the area within which the object (11) is intended to move. The object, for instance being a mobile robot, 19 provided with a matrix (18) of light-sensitive elements intended to receive radiation from the light source (10). A lens arrangement (12) focuses the incident radiation to a light spot on the matrix (18) which then emits corresponding electric signals. Means (20,21) are arranged to sense the matrix (18) to determine the position of the light spot from the element which most unambiguously reacts on the incident radiation. Further, means (24) are provided to calculate the coordinates of the position of the moving object in the plane of movement from the position of the most heavily reacting element.

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