Mechanical/electrical displacement transducer

Details Mechanical/electrical displacement transducer Mechanical/electrical displacement transducer

G - Physics

08

C

G08C 21/00 (2006.01)

Patent

CA 2200106

Displacement measuring apparatus for measuring the displacement and movement of an object includes a sensor having an operative surface and circuitry for producing an electrical output signal whose value is dependent upon the area of the operative surface covered by an electrical/magnetic field producing member. The apparatus also includes an elongate, flexible band capable of producing an electric/magnetic field, where the band is attached at one end to the sensor to roll over and cover or unroll from over and uncover the operative surface as the object whose displacement is to be measured is moved. The value of the electrical output signal produced by the circuitry is thus dependent upon the area of the operative surface covered by the band and thus by the position and movement of the object.

Cette invention concerne un dispositif de mesure des déplacements d'un objet, qui comprend un capteur comportant une surface active et un circuit générateur de signaux de sortie dont la valeur est fonction de l'aire de la surface active couverte par un élément générateur de champ électrique/magnétique. Le dispositif comprend également une bande souple allongée apte à générer un champ électrique/magnétique, ladite bande étant fixée par un bout au capteur pour rouler au-dessus et couvrir la surface active et vice versa à mesure que l'objet dont on veut mesurer le déplacement change de position. La valeur du signal de sortie électrique produit par le circuit susmentionné est de ce fait proportionnel à l'aire de la surface active couverte par la bande et, partant, au déplacement de l'objet.

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