A method of and apparatus for determining if a buried...

G - Physics – 01 – V

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G01V 3/08 (2006.01)

Patent

CA 2613304

A detector 1 for detecting a current carrying conductor has a pair of vertically spaced antennae (3, 5) to detect the magnetic radiation produced by a current carrying conductor as a result of one or both of the mains power supply or an electromagnetic signal which is induced in the conductor by a dedicated signal transmitter. The detector (1) continuously calculates the depth of a buried conductor and if the buried conductor is above a predetermined minimum depth then the detector 1 triggers an audio and/or visual alarm. By reducing the sensitivity of the antennae (3, 5), the lateral offset range for which the alarm sounds is reduced and the location of a buried conductor can be determined.

L'invention concerne un détecteur (1) permettant de détecter un conducteur porteur de courant. Le détecteur comporte deux antennes (3, 5) espacées verticalement, qui permettent de détecter le rayonnement magnétique produit par un conducteur porteur de courant grâce à l'induction, dans ce conducteur, d'un signal d'alimentation du secteur et/ou d'un signal électromagnétique par un émetteur de signal spécialisé. Le détecteur (1) calcule en continu la profondeur à laquelle se situe le détecteur enfoui, et, si celui-ci se situe au-dessus d'une profondeur minimum prédéterminée, le détecteur (1) déclenche une alarme sonore et/ou visuelle. En réduisant la sensibilité des antennes (3, 5), on réduit la plage de décalage latéral dans laquelle l'alarme retentit, ce qui permet de déterminer l'emplacement du conducteur enfoui.

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