Sensor element with laminated and spiral structure and without a power supply for a revolution counter

US7671583B2 · kind B2 · utility

Assignee

• Horst Siedle GmbH & Co. KG · DE

Inventors

• Marco Diegel · Jena, DE
• Roland Mattheis · Jena, DE

Key dates

• Filing date: Apr 6, 2005
• Grant date: Mar 2, 2010
• Expiry date: Oct 10, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D2205/26
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor element for a revolution counter includes a laminated structure suitable to cause a change in magnetisation in the sensor element without a power supply, simply by the displacement of a magnetic field past the sensor element. Moreover, the laminated structure is suitable for storing a plurality of such changes. The sensor element has a spiral structure.