Electromagnetic device for position measurement having multiple coils with equal area of turn cross-section
First Claim
1. In an electromagnetic device for position measurement including at least one alternating voltage generator for the transmitter, at least one receiver, an inductive probe for transmission, and an inductive probe for reception, at least the probe for transmission having at least two coils with intersecting winding axes, the improvement wherein:
- said probes have a plurality of intersecting winding axes;
the turn diameters of said at least two coils are greater when the distance from the center of the probe is greater than when the distance from the center of the probe is smaller;
the turns of said at least two coils have an identical area of cross-section; and
the number of layers of turns of said at least two coils is reduced as the distance of the coils from the center of the probe is increased.
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Abstract
An electromagnetic device for inductive position measurements for eliminating both the disadvantage of a limited measuring range and the disadvantage of superimposed interference voltages in the event of directional changes by providing a probe having a plurality of winding axes having coils with turn diameters which are greater, as the distance from the center of the probe increases. This creates the possibility of filling the entire probe volume with turns, and an almost complete independence from the direction of the probes relative to one another is shown for distance measures.
57 Citations
10 Claims
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1. In an electromagnetic device for position measurement including at least one alternating voltage generator for the transmitter, at least one receiver, an inductive probe for transmission, and an inductive probe for reception, at least the probe for transmission having at least two coils with intersecting winding axes, the improvement wherein:
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said probes have a plurality of intersecting winding axes; the turn diameters of said at least two coils are greater when the distance from the center of the probe is greater than when the distance from the center of the probe is smaller; the turns of said at least two coils have an identical area of cross-section; and the number of layers of turns of said at least two coils is reduced as the distance of the coils from the center of the probe is increased. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification
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- Resources
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Current AssigneeJurgen Morgenstern
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Original AssigneeJurgen Morgenstern
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InventorsMorgenstern, Jurgen
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Primary Examiner(s)Strecker, Gerard R.
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Assistant Examiner(s)Edmonds, Warren S.
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Application NumberUS07/288,247Time in Patent Office992 DaysField of Search324/207, 324/208, 324/234, 324/236, 324/227, 324/244, 324/247, 324/259, 324/260-262, 324/330, 324/332, 324/334, 343/788, 343/867, 343/742, 336/230, 336/231, 336/188, 336/220, 336/225, 336/115US Class Current324/207.17CPC Class CodesG01D 5/2013 by a movable ferromagnetic ...G01D 5/2216 by a movable ferromagnetic ...
