Sensor inductors, sensors for monitoring movements and positioning, apparatus, systems and methods therefore

• US 20090309683A1
• Filed: 06/16/2008
• Published: 12/17/2009
• Est. Priority Date: 06/16/2008
• Status: Abandoned Application

• Current Assignee: Medility, LLC
• Original Assignee: Medility, LLC
• Inventors: Cochran, William T.
• Application Number:
  US12/214,202
• Publication Number:
  US 20090309683A1
• Time in Patent Office: Days
• US Class Current: 336/65
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: H01F 21/06 by movement of core or part of core relative to the windings as a whole
• CPC Class Codes: H01F 5/003 Printed circuit coils

Abstract

A generally planar shaped inductor is disclosed that is particularly adaptable for use in motion or position sensors. One inductor can function as a signal input unit and another as a pick up unit in an arrangement wherein both inductors are placed in a generally parallel juxtaposition for flux flow there between. A movable armature is located between the inductors to control the amount of flux transmission between inductors. The position of the armature relative to the inductors controls the output signal generated by the pickup inductor that are adapted to be converted into indications of displacements.

Claims

1. An inductor for use in a movement sensor comprising:

a sensor substrate;

a plurality of connections on the substrate, an outer connection being located towards an outer edge of the substrate and an inner connection being located away from the edges of the substrate, and

a conductor having at least two ends, the conductor being mounted along the substrate wherein one end is connected to the outer connection, and wherein the conductor extends along the substrate to form at least one turn inwardly about the inner connection, and

wherein the second end of the conductor is connected to the inner connection.

2. An inductor as defined in claim 1 wherein the conductor extends along the substrate to form multiple turns inwardly about the inner connection with each turn diminishing in size.

3. An inductor as defined in claim 1 wherein the sensor substrate has a generally planar shape.

4. An inductor as defined in claim 3 wherein the conductor is formed about a planar side of the substrate.

5. An inductor as defined in claim 1 wherein the substrate is of a curved planar configuration.

6. An inductor as defined in claim 1 wherein the sensor substrate is an essentially rigid insulator having planar thin shape, and said substrate is adapted to receive an adhesive for securing the substrate to a surface to be monitored so that the plane of the substrate is generally parallel to the surface.

7. An inductor as defined in claim 2 wherein the substrate is the surface of a unit to be monitored.

8. An inductor as defined in claim 1 wherein:

a second plurality of connections on the substrate, an outer connection being located towards an outer edge of the substrate and an inner connection being located away from the edges of the substrate, wherein one of the connections connect with a connection on the other connectors, and

another conductor having at least two ends, the conductor being formed along the substrate separate from the other conductor, wherein one end of the conductor is connected to the outer connection, and wherein the conductor extends along the substrate to form at least one turn inwardly about the inner connection, and wherein the second end of the conductor is connected to the inner connection.

9. An inductor as defined in claim 8 wherein the other conductor extends along the substrate to form multiple turns inwardly about the inner connection with each turn diminishing in size.

10. An inductor as defined in claim 9 wherein the conductors are substantially parallel juxtaposed relative to each other.

11. An inductor as defined in claim 8 wherein the conductors have a spiral configuration.

12. An inductor as defined in claim 8 wherein the conductors are one of a general circular, rectangular, triangular, regular, and irregular type configuration.

13. A sensor inductor comprising a conductor having at least first and second ends, the conductor being formed in a generally planar configuration with a plurality of concentric turns about an axis that is generally perpendicular to the conductor plane, a first end of the conductor being located exterior to the conductor turns and a second end being located within the interior of the conductor turns.

14. A sensor inductor as defined in claim 13 wherein the conductor is formed within a sensor planar substrate.

15. A sensor inductor as defined in claim 14 wherein the substrate is the surface of a unit to be monitored.

16. A sensor inductor as defined in claim 13 comprising a second conductor in parallel juxtaposition with the other conductor having at least first and second ends, the second conductor being formed in a generally planar configuration, and wherein the second conductor includes a plurality of concentric turns about the axis, a first end of the second conductor being located exterior to the second conductor turns and a second end of the second conductor being located within the interior of the second conductor turns.

17. A sensor inductor as defined in claim 16 wherein the second conductor is formed on the planar sensor substrate on the opposite side of the substrate.

18. A sensor inductor arrangement for use in an inductive sensor for monitoring movement comprising:

a plurality of sensor substrates mounted adjacent each other in a generally parallel configuration with spacing in between;

a plurality of connections on the substrates, each including an outer connection located adjacent the outer edges of the substrate and an inner connection located away from the edges, and

a plurality of conductors each having at least two ends, the conductors being included with separate substrates, wherein one end of each conductor is connected to the outer connection, and wherein the conductors extend along the substrate to form multiple turns inwardly about the inner connector with each turn diminishing in size and the second end of each conductor is connected to the inner connection.

19. A sensor inductor arrangement as defined in claim 18 wherein the turns of the both conductors are made about a common axis and the turns extend in the same direction.

20. A sensor inductor arrangement as defined in claim 19 wherein the conductors have a spiral configuration.

21. A sensor inductor arrangement as defined in claim 20 wherein the conductors are one of a general circular, rectangular, triangular, regular, and irregular, type configuration.

22. A sensor inductor arrangement as defined in claim 19 wherein the substrate is of a generally planar configuration.

23. A sensor inductor arrangement as defined in claim 19 wherein the substrate is of a curved planar configuration.

24. A dual inductor arrangement for use in an inductive sensor for monitoring the movement of a unit comprising:

a substantially rigid, generally planar shaped, thin, insulating, sensor substrate;

a plurality of connections on each side of the substrate, each substrate including an outer connection located adjacent the outer edges of the substrate and an inner connection located away from the edges, and

a plurality of conductors each having at least two ends, the conductors being included on separate sides of the substrate and generally opposite each other, wherein each conductor extend along its side of the substrate to form multiple turns inwardly about the inner connector with each turn diminishing in size;

wherein one end of each conductor is connected to the outer connection on its side of the substrate and the second end of each conductor is connected to the inner connection on its side of the substrate, and

at least one of the inner and outer connectors on the separate sides of the substrate are interconnected.

25. A dual inductor as defined in claim 24 wherein the conductors are wound about a common axis extending generally normal to the substrate and are in juxtaposition with each other as separated by the substrate.

26. A dual inductor as defined in claim 24 wherein the inductors are connected in parallel.

27. A dual inductor as defined in claim 24 wherein the inductors are connected in series.

28. An inductor for use in a sensor for monitoring movements of a unit comprising:

a relatively rigid, generally planar, thin, insulating, sensor substrate;

a conductor located about one side of the substrate that is formed in a pattern to create a generally planar sensor inductor that lies along the plane of the substrate, the conductor having opposite ends, and

connectors to provide for connection to the two conductor ends.

29. An inductor as defined in claim 28 wherein the conductor includes one of a circular, rectangular, triangular, serpentine, regular or irregular pattern form.

30. An inductor as defined in claim 28 wherein

the sensor substrate includes two generally planar sides;

a second conductor located about the other planar side of the substrate that is formed in a pattern, defining a second generally planar sensor inductor that lies along the plane of the opposite side of the substrate, the second conductor having opposite ends, and

connections to provide for connections to the two second conductor ends.

31. An inductor as defined in claim 30 wherein the two conductors are formed with the same pattern.

32. An inductor as defined in claim 30 wherein connections of the first and second conductors are adapted to be connected to form one of a series and parallel connections.

33. An inductor as defined in claim 28 wherein:

a plurality of the sensor substrates mounted adjacent each other in a generally parallel configuration with spacing in between,

conductors located on the substrates, a conductor for a separate substrate, and

connectors on each substrate to provide for connection to the conductors.

34. An inductor as defined in claim 28 wherein;

a plurality of the conductors are located on the same side of the sensor substrate and located generally longitudinally with respect to each other.