Patent · US Active

Capacitive occupant detection system

US8957689B2 · kind B2 · utility

11Cited by

7References

10Claims

0Family size

Assignee

IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. · LU

Inventors

Michael Virnich · Korlingen, DE
David Hoyer · Ayl, DE
Martin Thinnes · Trier, DE

Key dates

Filing date	Sep 16, 2011
Grant date	Feb 17, 2015
Priority date	—
Expiry date	Jan 28, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60N2210/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A capacitive occupant detection system comprises at least one antenna electrode to be arranged in a seat and an evaluation unit operatively coupled to said at least one antenna electrode, said evaluation unit being configured for applying, during operation, an alternating voltage signal to said antenna electrode and for detecting an amplitude and/or phase of a displacement current flowing from said antenna electrode towards ground. According to the invention said antenna electrode comprises an antenna electrode conductor and at least one dedicated ground electrode, said ground electrode being arranged at a predetermined distance of said antenna electrode conductor and extending along said antenna electrode conductor.

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