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US 12,656,152 B2Granted
Inductive linear position sensor
AssigneeHella GmbH & Co. KGaA
InventorsHenning Irle, Sebastian Forst
Life of this patent
Estimating the term…
Abstract
An inductive linear position sensor, wherein the linear position sensor comprises a stator having at least one excitation coil and at least one sensor receiver coil, at least one movable element which is linearly movable relative to the stator, and an evaluation circuit.
Claims12
An inductive linear position sensor comprising:
- a stator having at least one excitation coil and at least two sensor receiver coils;
- at least two movable elements that are linearly movable relative to the stator and that each have a longitudinal extension extending in a direction of a linear direction of movement, the at least two movable elements each being formed with at least two electrically conductive coupling sections for inductive coupling of the at least one excitation coil with a respective one of the at least two sensor receiver coils as well as non-coupling sections that are electrically less conductive or non-conductive with respect to the coupling sections, the coupling sections being each spaced apart by the non-coupling sections in the direction of the longitudinal extension;
- and
- an evaluation circuit to detect a linear position of the at least two movable elements relative to the stator as a function of the inductive coupling between the at least one excitation coil and the at least two sensor receiver coils,
- wherein the at least two movable elements are arranged parallel to each other, wherein, with respect to the direction of the longitudinal extension of the at least two movable elements, the coupling sections and non-coupling sections of a first movable element of the at least two movable elements are arranged offset from the coupling sections and non-coupling sections of a second movable element of the at least two movable elements,
- wherein the at least two movable elements arranged parallel to each other are arranged side by side and in a common plane,
- wherein the at least two movable elements arranged parallel to each other are connected to each other by a connecting bar that is separate from the at least two movable elements and runs between the coupling sections of the respective movable elements,
- wherein the connecting bar is formed of a non-metallic material, and
- wherein the connecting bar is arranged in the common plane.
6 more elements
Dependencies are inferred from the claim text.