Sensor device for measuring the rotational position of an element

Patent metadata

Field	Value
Publication number	US-11441885-B2
Application number	US-202017016781-A
Country	US
Kind code	B2
Filing date	Sep 10, 2020
Priority date	Sep 12, 2019
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

A sensor device for measuring a rotational position of an element that is rotatable about an axis of rotation includes a sender member emitting a magnetic field and a plurality of receiving members receiving the magnetic field. Each of the receiving members has a pair of conductors that together delimit a pair of surrounded areas. Each of the surrounded areas tapers in and against a circumferential direction at ends of the surrounded areas.

First claim

What is claimed is:

1. A sensor device for measuring a rotational position of an element that is rotatable about an axis of rotation, comprising:
a sender member emitting a magnetic field; and
a plurality of receiving members receiving the magnetic field, each of the receiving members has a pair of conductors that together delimit a pair of surrounded areas, each of the surrounded areas tapers in and against a circumferential direction at ends of the surrounded areas, the sender member and the receiving members are separated by a distance along the circumferential direction.

2. The sensor device of claim 1 , wherein each of the surrounded areas is a convex area that expands and contracts in the circumferential direction about the axis of rotation.

3. The sensor device of claim 1 , wherein each of the surrounded areas is eye-shaped.

4. The sensor device of claim 1 , wherein each of the conductors has an elongated shape that resembles a graph of a spatially periodic function.

5. The sensor device of claim 1 , wherein the receiving members have an identical shape.

6. The sensor device of claim 5 , wherein the receiving members are shifted by a quarter of a period to each other along the circumferential direction.

7. The sensor device of claim 1 , wherein the conductors are substantially symmetrical to each other with respect to a cylindrical circumferential surface.

8. The sensor device of claim 1 , wherein a plurality of sections of the conductors that enclose the surrounded areas are curved sections.

9. The sensor device of claim 1 , wherein the conductors have no straight sections extending in a radial direction.

10. The sensor device of claim 1 , wherein the sender member has a coil.

11. The sensor device of claim 1 , wherein the sender member surrounds the receiving members.

12. The sensor device of claim 4 , wherein the distance between the sender member and the receiving members along the circumferential direction is less than one-quarter of a period.

13. The sensor device of claim 1 , wherein the distance between the sender member and the receiving members along the circumferential direction is less than one-quarter of a length of the sender member along the circumferential direction.

14. The sensor device of claim 1 , wherein the sender member and/or at least one of the receiving members substantially lie in a plane.

15. The sensor device of claim 1 , wherein the sender member and/or at least one of the receiving member is a conductive path on a printed circuit board.

16. A sensor device for measuring a rotational position of an element that is rotatable about an axis of rotation, comprising:
a sender member emitting a magnetic field; and
a plurality of receiving members receiving the magnetic field, each of the receiving members has a pair of conductors that together delimit a pair of surrounded areas, each of the surrounded areas tapers in and against a circumferential direction at ends of the surrounded areas, at least one of the pair of surrounded areas is a non-convex surrounded area.

17. The sensor device of claim 16 , wherein the non-convex surrounded area has an indent at an end.

18. The sensor device of claim 16 , wherein at least one of the other surrounded areas is a convex area that expands and contracts in the circumferential direction about the axis of rotation.

Assignees

• Te Connectivity Belgium Bv
• Te Connectivity Germany Gmbh
• Te Connectiviyu Belgium Bv

Inventors

• Ocket Tom
• Becker Tobias
• Harz Moritz

Classifications

• G01B7/003 Primary

  for measuring position, not involving coordinate determination (coordinate measuring G01B7/004) · CPC title

• G01B7/30

  for measuring angles or tapers; for testing the alignment of axes · CPC title

• G01B7/281

  for measuring contour or curvature along an axis, e.g. axial curvature of a pipeline or along a series of feeder rollers · CPC title

• G01D5/2053 Primary

  by a movable non-ferromagnetic conductive element · CPC title