Gassensor und Verfahren zum Betreiben Dieses Gassensors

Details

Veröffentlichungs-Nr.

EP3153849

Aktenzeichen

EP15188284

Anmeldetag

5. Oktober 2015

Veröffentlichung

1. Dezember 2021

Erteilung

1. Dezember 2021

Rechtsraum

EP

IPC

G01N27/12G01N33/00

Abstract

A gas sensor (10) comprises a set of gas sensing cells (1). Each gas sensing cell (1) comprises on or integrated in a substrate (14): a gas sensitive element (11), and a heater (15) for heating the assigned gas sensitive element (11). A control unit is configured to individually control the heaters (15) of the set of gas sensing cells (1). During a first period (T1) in the lifetime of the gas sensor (10), gas measurements are conducted with a first gas sensing cell (FSC) of the set by activating the corresponding heater (15) to heat the assigned sensitive element (11) while at the same time leaving the heater (15) of at least one other gas sensing cell (OSC) of the set inactive. In response to a trigger event (TR1), during a second period (T2) in the lifetime of the gas sensor (10) following the first period (T1), gas measurements are conducted with the other gas sensing cell (OSC) by activating the corresponding heater (15) to heat the assigned sensitive element (11), while at the same time leaving the heater (15) of the first gas sensing cell (FSC) inactive.

Anmelder

Firma

Sensirion AG

Land

🇨🇭 Schweiz

Fachgebiete