Inductive measurement device for determining dimensions of objects
AssigneeAsea Brown Boveri AG
InventorSten Linder
Life of this patent
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Abstract
A device for non-contacting measurement of a measuring object is provided. The device includes at least one pair of associated coils, including a transmitter coil and a receiver coil. The transmitter coil generates a time varying magnetic field. In the receiver coil, a voltage is induced. The voltage is dependent on the location of the transmitter coil, the receiver coil and a measuring region of a measuring object. The device comprises a U-shaped structure with two branches. A retaining part is arranged between these branches. The transmitter and receiver coils are fixed to the branches of the U-shaped structure and the measuring object is intended to be arranged centrally in the opening of the U-shaped structure.
Claims8
An apparatus for inductive measurement of a measuring object, comprising:
- a U-shaped structure including two branches and a retaining part arranged therebetween, the measuring object being centrally arranged in the U-shaped structure;
- at least one pair of associated coils including a transmitter coil and a receiver coil fixed to each branch of the U-shaped structure, the transmitter coil generating a time varying magnetic field tangential to said measuring object wherein a voltage induced in the receiver coil by said field is based on a location of the transmitter coil, the receiver coil, said tangential field and an outer surface of the measuring object relative to each other.
An apparatus for inductive measurement of the measuring object, comprising:
- a U-shaped structure including two branches and a retaining part arranged therebetween, the measuring object being centrally arranged in the U-shaped structure;
- at least one pair of associated coils including a transmitter coil and a receiver coil fixed to the branches of the U-shaped structure, the transmitter coil generating a time varying magnetic field wherein a voltage induced in the receiver coil is based on a location of the transmitter coil, the receiver coil and an outer surface of the measuring object relative to each other;
- wherein the transmitter coil is placed in the U-shaped structure in such a way that field lines generated by the transmitter coil extend in parallel with a measuring region on the outer surface of the measuring object;
- and wherein the receiver coil of an associated pair of coils is placed in the U-shaped structure so that the field lines extending in parallel with the measuring region and generated by the transmitter coil will traverse the receiver coil.
Dependencies are inferred from the claim text.