Device and process for monitoring sound and gas exposure

US11170622B2 · kind B2 · utility

Assignee

• DRÄGERWERK AG & CO. KGAA · DE

Inventors

• Ulf Ostermann · Rheinböllen, DE
• Livio Fornasiero · Bliestorf, DE
• Michael BRODERSEN · Lübeck, DE
• Wulf-Gerd Traving · Lübeck, DE
• Sven Eric Schmaljohann · Lübeck, DE
• Rene Lutat · Lübeck, DE
• Anne Wiggers · Lübeck, DE

Key dates

• Filing date: Apr 23, 2020
• Grant date: Nov 9, 2021
• Expiry date: Apr 23, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04R2420/07
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device includes a gas-measuring unit and a sound-measuring unit. The gas-measuring unit has a gas sensor detecting a first measured variable, and a gas analysis module determining a gas concentration from the first variable and comparing the concentration with a first threshold value, to output a first signal based thereon. The sound-measuring unit has a sound detection unit detecting a second measured variable, and a sound analysis module determining a status variable, from the second variable, indicating a noise exposure, and comparing the status variable with a second threshold value to determine a first parameter indicating a current sound level and/or determining a second parameter indicating a sound exposure accumulated over a time interval. The sound analysis module may determine the status variable, the first parameter and/or the second parameter as a function of the comparison of the gas concentration and the first threshold value.