Inductive linear sensor

US6384597B1 · kind B1 · utility

Assignee

• Hella KGaA Hueck & Co. · DE

Inventors

• Henning Irle · Lippstadt, DE
• Norbert Kost · Geseke, DE
• Franz Schmidt · Mannheim, DE

Key dates

• Filing date: May 3, 2000
• Grant date: May 7, 2002
• Expiry date: May 3, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/204
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed are inductive linear and angle sensors for motor vehicles, which include an oscillator circuit for generating a periodic alternating-voltage signal; an exciting coil coupled to the oscillator circuit; several receiving coils; an evaluating circuit for evaluating signals induced in the receiving coils; and one movable inductive coupling element which influences a strength of inductive coupling between the excitation coil and the receiving coils. The one movable inductive coupling element of each sensor is varied in form to reduce residual error, which occurs during operation.