Sensing module and method for gas concentration measurement

US7725268B2 · kind B2 · utility

Assignee

• Sensata Technologies Holland B.V. · NL

Inventors

• Roger Appelo · Beilen, NL
• Tom Urban Artursson · Almelo, NL
• Per Holmberg · Stockholm, SE
• Nicolae Barsan · Bingen, DE
• Heiko Eugen Ulmer · Almelo, NL

Key dates

• Filing date: Nov 25, 2004
• Grant date: May 25, 2010
• Expiry date: Jun 3, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/0006
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Method and sensing module for sensing pollution of outside air. The sensing module (1) comprises an electro chemical sensing element (3), and a processor (2). A sensing module output signal is provided based on the measurement signal and a baseline signal level. The baseline signal level is adapted depending on two threshold levels (13-15). A pollution concentration value is determined from the measurement signal and a classification level of air pollution is provided as sensing module output signal. A classification level is determined using a plurality of classification threshold values and the pollution concentration values. The plurality of classification threshold values are dynamically adjustable.