Patent · US Expired

System and method for detecting the seat occupancy in a vehicle

US7090247B2 · kind B2 · utility

3Cited by

6References

23Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Klaus Hofbeck · Dresden, DE
Birgit Rosel · Regensburg, DE

Key dates

Filing date	May 10, 2004
Grant date	Aug 15, 2006
Priority date	—
Expiry date	Aug 7, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG01S13/931
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A system for detecting the seat occupancy in a vehicle includes a microwave transmitter (10) and a plurality of small-area reflectors (12) which are arranged in the vehicle. By activating or deactivating the different reflectors (12) during different time intervals, the reflectors (12) can be identified via the unequivocal assignment between the time intervals and the reflectors. This makes it possible to use narrow-band microwave radiation, since it is then not absolutely necessary to identify the reflectors (12) with the aid of different frequencies. It is also possible to arrange receivers in the seat (20) instead of reflectors (12).

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