Gas-measuring device with personnel locator

US10614695B2 · kind B2 · utility

Assignee

• DRÄGER SAFETY AG & CO. KGAA · DE

Inventors

• Ulf Ostermann · Rheinböllen, DE
• Livio Fornasiero · Bliestorf, DE
• Oliver Harnack · Lübeck, DE
• Winfried Schöch · Lübeck, DE
• Wulf-Gerd Traving · Lübeck, DE

Key dates

• Filing date: Dec 17, 2018
• Grant date: Apr 7, 2020
• Expiry date: Dec 17, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G08B21/023
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A gas-measuring device includes a control unit, a gas sensor module, a radio receiver unit, a first radio transmitter unit and a second radio transmitter unit. The control unit detects sensor data via the gas sensor module in a first operating state and upon detecting a potential hazardous state, based on the sensor data, changes over into a second operating state. The control unit further detects one or more radio signals, which indicate respective characteristics of respective portable transmitter units, by the radio receiver unit in the second operating state, and determines, on the basis of the radio signals, which of the transmitter units have a sufficiently close proximity in space to the gas-measuring device. The control unit provides the characteristics of the transmitter units, having a sufficiently close proximity in space, via the first radio transmitter unit.