Mobile object position determination

Details Mobile object position determination Mobile object position determination

G - Physics

01

S

G01S 5/30 (2006.01) G01S 15/74 (2006.01)

Patent

CA 2684986

An ultrasound position determination system comprising a base unit and at least one mobile unit, each of said mobile and base units operable to transmit and receive ultrasonic signals, said mobile unit being adapted to transmit a predetermined signal in dependence upon the state of transmission of the base unit, said base unit being adapted to determine the time taken for said signal to pass from the mobile unit to the base unit and thereby calculate a distance between the mobile unit and the base unit.

L'invention concerne un système de détermination de position par ultrasons, lequel système comprend une unité de base et au moins une unité mobile, chacune desdites unités mobile et de base étant actionnables pour émettre et recevoir des signaux ultrasonores, ladite unité mobile étant apte à émettre un signal prédéterminé en fonction de l'état d'émission de l'unité de base, ladite unité de base étant apte à déterminer le temps mis par ledit signal à se propager de l'unité mobile à l'unité de base et à calculer ainsi une distance entre l'unité mobile et l'unité de base.

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