Measuring device for detecting a body moving in relation to...

E - Fixed Constructions – 21 – B

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E21B 47/09 (2006.01) G01V 3/08 (2006.01)

Patent

CA 2424284

The invention relates to a measuring device for detecting a body (3) moving in relation to an, in particular, tubular container (2). Said device comprises at least one magnet unit (4-9) which generates a magnetic field, measures this magnetic field and which is assigned to the container and/or to the magnetic body. The device also comprises at least one evaluation device connected to the magnet units and provided for receiving measurement signals of the magnet units. The aim of the invention is to improve a measuring device of this type in order to be able to easily determine, in addition to the position of the body (3) in relation to the container (2) in a longitudinal direction (33), the position of the body in relation to the container in the transverse direction with a relatively high level of accuracy. To this end, the magnet units comprise a maximum magnetic flux that is essentially perpendicular to the direction of the relative motion of the body and container.

L'invention concerne un dispositif de mesure destiné à détecter un corps (3) se déplaçant par rapport à un contenant tubulaire (2) en particulier. Ledit dispositif est composé d'au moins une unité magnétique (4-9) de production de champ magnétique et de mesure de champ magnétique respectivement affectée au contenant et/ou au corps magnétique, et d'au moins une unité d'exploitation reliée aux unités magnétiques, destinée à la réception de signaux de mesure des unités magnétiques. L'invention vise à améliorer un tel dispositif de mesure de manière à pouvoir détecter simplement et avec une précision relativement élevée, la position du corps (3) par rapport au contenant (2) dans le sens longitudinal (33), ainsi que sa position par rapport au contenant dans le sens transversal. A cet effet, les unités magnétiques présentent un flux magnétique maximal essentiellement parallèle au sens du mouvement relatif du corps et du contenant.

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