Two coordinate position sensing systems

Details Two coordinate position sensing systems Two coordinate position sensing systems

G - Physics

08

B

340/135.1

G08B 1/08 (2006.01) G01B 17/00 (2006.01) G01D 5/48 (2006.01) G01S 5/30 (2006.01) G06F 3/033 (2006.01)

Patent

CA 1152604

Abstract of the Disclosure A system for determining X and Y coordinate positions on a surface wherein a first transducer generates plane waves having electro~agnetic fields associated ~herewith, which plane waves travel along the direction of the X-coordinate and a second transducer generates plane waves having electro- magnetic fields associated therewith, which plane waves travel along the tirection of the Y-coordinate. A receiver transducer at the position to be determined detects the presence of the electromagnetic fields associated with the plane waves as they travel past the receiver transducer and the distances traveled by the plane waves are appropriately calculated either by determining the times of travel using pulse wave signals or by determining phase relation- ships using continuous wave signals.

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