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1. WO2009053752 - DETECTOR

Publication Number WO/2009/053752
Publication Date 30.04.2009
International Application No. PCT/GB2008/050990
International Filing Date 24.10.2008
IPC
G01D 5/20 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
14influencing the magnitude of a current or voltage
20by varying inductance, e.g. by a movable armature
CPC
G01D 5/2073
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
14influencing the magnitude of a current or voltage
20by varying inductance, e.g. by a movable armature
204by influencing the mutual induction between two or more coils
2073by movement of a single coil with respect to two or more coils
Applicants
  • KREIT, Darran [GB]/[GB]
  • HOWARD, Mark Anthony [GB]/[GB]
Inventors
  • KREIT, Darran
  • HOWARD, Mark Anthony
Agents
  • ip21 Ltd
Priority Data
0720949.724.10.2007GB
0721897.708.11.2007GB
0802947.219.02.2008GB
0812870.415.07.2008GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DETECTOR
(FR) DÉTECTEUR
Abstract
(EN)
An inductive detector arranged to measure position along a axis comprising: a transmit winding; a receive winding; a passive circuit comprising a winding in electrical series with a capacitor; wherein: the mutual inductance between the transmit winding and the receive winding is a function of the relative displacement of the passive circuit along the measurement axis; a first portion of one of the windings is wound on a first pitch and a second portion of the same winding is wound on a second pitch whose extent is greater than the first pitch.
(FR)
L'invention concerne un détecteur inductif servant à mesurer une position sur un axe et qui comprend: un enroulement d'émission; un enroulement de réception; un circuit passif comprenant un enroulement placé électriquement en série avec un condensateur. Dans ce détecteur, l'inductance mutuelle entre l'enroulement d'émission et l'enroulement de détection est fonction du déplacement relatif du circuit passif sur l'axe de mesure; une première partie d'un des enroulements est enroulée sur un premier pas de bobinage, et une deuxième partie de ce même enroulement est enroulée sur un deuxième pas de bobinage, dont la valeur est supérieure à celle du premier pas de bobinage.
Also published as
Latest bibliographic data on file with the International Bureau