Method and control unit for detecting a gas concentration of gas from a gas mixture

US8459097B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Petra Neff · Stuttgart, DE
• Markus Widenmeyer · Schenefeld, DE

Key dates

• Filing date: Nov 29, 2010
• Grant date: Jun 11, 2013
• Expiry date: Dec 21, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4141
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A gas concentration of a gas may be detected from a gas mixture using gas detectors sensitive to the gas. A gas concentration may be measured by a first gas detector at a first operating temperature, and a first signal characteristic of the measured gas concentration may be provided. An operating temperature of the first gas detector may be changed to a second operating temperature, or a second gas detector having the second operating temperature may be provided. A gas concentration may then be measured at the second operating temperature, and a second signal characteristic of the measured gas concentration may be provided. The gas concentration of the gas from the gas mixture may be determined using a first concentration value allocated to the first signal and a second concentration value allocated to the second signal.