Breath alcohol measurement with contactless sample collection

US11474096B2 · kind B2 · utility

Assignee

• DRÄGER SAFETY AG & CO. KGAA · DE

Inventors

• Jens Rekow · Lübeck, DE
• Stefan Morley · Wulfen, DE
• Stefan Barten · Wulfen, DE
• Carsten Stemich · Düchelsdorf, DE
• Michael Richenberger · Neviges, DE
• Sebastian SCHRÖTER · Lübeck, DE

Key dates

• Filing date: Aug 14, 2018
• Grant date: Oct 18, 2022
• Expiry date: Oct 2, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/082
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A breath alcohol measurement device has a sample collector (1) with a sample inlet (2) configured for a contactless introduction of a breath sample. A measurement unit (9) has a sensor (16) that generates a measurement signal based on an alcohol content in the breath sample. A control and evaluation unit (4) determines the alcohol content based on the measurement signal and transmits a result-specific signal to an output unit (5). Some of the breath sample provided into the sample inlet (2) is applied, at least intermittently via a main flow duct (10), to the sensor (16) via a measurement gas duct (21) that is connected via an outlet to the environment (7). Between the sample inlet (2) and the outlet of the main flow duct there is a further outflow opening (6) through which some of the breath sample introduced into the sample inlet exits into the environment.