Method and device for detection and identification of gases

US9404889B2 · kind B2 · utility

Assignee

• Airsense Analytics GmbH · DE

Inventors

• Wolf Münchmeyer · Wittingen, DE
• Bert Ungethüm · Schwerin, DE
• Andreas Walte · Schwerin, DE

Key dates

• Filing date: Jan 12, 2009
• Grant date: Aug 2, 2016
• Expiry date: Jul 25, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J49/0031
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Methods and devices identify gases and allow immediate and simultaneous detection of the chemical compounds to be tested. The methods and devices use a function of the electric field strength, for identification the material-specific mobility and simultaneously the change in this mobility, which is achieved in that due to the resulting electric field, each ionized molecule has a drift velocity which is partially increased or decreased, wherein the resulting electric field is a DC field, on which an asymmetric AC field is superimposed. The methods and devices for the detection and identification of gases are used to identify and detect chemical compounds, such as, explosive and/or unhealthy substances or compounds, which may be detected in very small concentrations.