Inductive position detector
AssigneeZettlex (UK) Limited
InventorsMark Anthony Howard, Darran Kreit
Life of this patent
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Abstract
An inductive detector is provided for measuring the relative position of bodies along a measurement path comprising: an inductive target arranged along the measurement path; a laminar antenna arranged facing a portion of the target; an electronics circuit arranged along the measurement path; wherein, the inductance of at least one winding in the antenna varies continuously in proportion to the relative position of target and antenna.
Claims20
1-21. (canceled)
An inductive position detector comprising a first and a second body, at least one of said bodies being displaceable relative to the other in a measurement direction along a measurement path, said first body comprising one or more antenna windings for transmitting and receiving signals;
- said first body further comprising an electronic circuit for energising said antenna windings for transmitting signals and for processing signals induced in said antenna windings;
- wherein said second body comprises a plurality of discrete target areas provided along said measurement path;
- said discrete target areas being either electrically conductive or magnetically permeable;
- whereby induced signals vary in accordance with the relative position of the first and second body;
- wherein said antenna windings and said electronic circuit for energising said antenna windings and for processing signals from said antenna windings are located adjacent to one another;
- said antenna windings and said electronic circuit being longitudinally arranged and spaced in said measurement direction;
- whereby they respectively overlap different regions of said plurality of discrete target areas.
Dependencies are inferred from the claim text.