Patent · US Expired

Position sensor

US6873150B2 · kind B2 · utility

2Cited by

2References

8Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Frank Buerger · Lehrte, DE
Norbert Ludwig · Bruggen, DE

Key dates

Filing date	Aug 30, 2002
Grant date	Mar 29, 2005
Priority date	—
Expiry date	Aug 30, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/145
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A position sensor which is particularly suitable for the rotational angle detection of throttle or exhaust gas valves comprises a permanent magnet and at least two magnetic field sensors arranged adjacently to the permanent magnet. The magnetic field sensors are, for example, Hall sensors. By a relative movement between the permanent magnet and the magnetic field sensors, a position-dependent signal, for example in dependence on a rotational angle of the shaft, is produced. According to the invention, the two magnetic field sensors are arranged behind each other in field direction of the permanent magnet.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.