Method and system for monitoring the location of a vehicle

Details Method and system for monitoring the location of a vehicle Method and system for monitoring the location of a vehicle

G - Physics

08

G

G08G 1/123 (2006.01) G06T 3/60 (2006.01)

Patent

CA 2505426

A location of a vehicle is monitored using a predefined geo-fencing boundary within a coordinate system. An angle between a selected straight edge of the boundary and an axis of the coordinate system is determined, and the boundary is rotated by the angle such that the selected straight edge of the rotated boundary is parallel to the axis of the coordinate system. Subsequently, a set of coordinates associated with a particular location of a monitored device are identified and rotated by the previously determined angle. The rotated set of coordinates is then compared to the rotated boundary to determine a location of the monitored device with respect to the selected boundary. This information can be used to determine whether the vehicle remains within the predefined geo-fencing boundary.

Selon l'invention, l'emplacement d'un véhicule est surveillé au moyen d'une délimitation de gardiennage virtuel prédéfinie dans un système de coordonnées. On détermine un angle entre un bord droit choisi de la délimitation et un axe du système de coordonnées, et on fait pivoter cette délimitation suivant cet angle de façon que le bord droit choisi soit parallèle à l'axe du système de coordonnées. Par la suite, on identifie un ensemble de coordonnées associées à un emplacement particulier d'un dispositif surveillé et on les fait pivoter selon l'angle déterminé antérieurement. On compare ensuite l'ensemble de coordonnées ayant pivoté à la borne ayant pivoté pour déterminer un emplacement du dispositif surveillé par rapport à la délimitation choisie. Cette information peut servir à déterminer si le véhicule reste ou non à l'intérieur de la délimitation de gardiennage virtuel prédéfinie.

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