Patent · US Active

Fluid sensor including an error detection device

US7360392B2 · kind B2 · utility

3Cited by

4References

16Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Uwe Konzelmann · Asperg, DE
Ulrich Wagner · Bernburg, DE
Christoph Gmelin · Stuttgart, DE
Martin Baumann · Hartenstein, DE

Key dates

Filing date	Mar 7, 2007
Grant date	Apr 22, 2008
Priority date	—
Expiry date	Mar 7, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01N25/18
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A fluid sensor may be used for detecting fluid media, in particular hydrogen. The fluid sensor includes a sensor chip having a chip surface, which has a measuring surface and a body surface. Printed conductors of a central sensor circuit having at least one heating element and at least one temperature sensor are provided on the measuring surface. Furthermore, the fluid sensor has one additional fracture detection element and one fracture detection circuit situated on the sensor chip. The fracture detection circuit is designed for detecting fractures and/or cracks in and/or on the sensor chip, in particular in the area of a boundary between the measuring surface and body surface.

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