EP 3155411 A1 20170419 - METHOD FOR OPERATING A SENSOR APPARATUS
Title (en)
METHOD FOR OPERATING A SENSOR APPARATUS
Title (de)
VERFAHREN ZUM BETRIEB EINER SENSORVORRICHTUNG
Title (fr)
PROCÉDÉ POUR FAIRE FONCTIONNER UN DISPOSITIF DE DÉTECTION
Publication
Application
Priority
- DE 102014211321 A 20140613
- EP 2015062007 W 20150529
Abstract (en)
[origin: WO2015189055A1] A method for operating a sensor apparatus (110) is proposed. The sensor apparatus (110) has at least one sensor element (112) for sensing at least one portion of a gas component in a gas in a measuring gas chamber (114). The sensor element (112) comprises at least one first electrode (116) and at least one second electrode (118). The second electrode (118) is arranged in at least one measuring cavity (120). The measuring cavity (120) can be supplied with gas from the measuring gas chamber (114) via at least one diffusion barrier (122). The first electrode (116) and the second electrode (118) are connected by means of at least one solid electrolyte (124) and form a pump cell (126). The sensor apparatus (110) additionally has at least one controller (128). The controller (128) is connected to the first electrode (116) by means of at least one first signal line (130). The controller (128) is connected to the second electrode (118) by means of at least one second signal line (132). The first signal line (130) is connected to an electrical earth (136) by means of at least one first interference suppression capacitance c1 (134). The second signal line (132) is connected to the electrical earth (136) by means of at least one second interference suppression capacitance c2 (138). At least one measuring resistor (140) is arranged between the electrical earth (136) and at least one from the first signal line (130) and the second signal line (132). The controller (128) is set up to operate the pump cell (126) with a function current. The method involves application of a plurality of different switching states to the pump cell (126) in order to determine the first interference suppression capacitance c1 (134) and the second interference suppression capacitance c2 (138).
IPC 8 full level
G01N 27/406 (2006.01)
CPC (source: CN EP KR)
G01N 27/4065 (2013.01 - CN EP KR)
Citation (search report)
See references of WO 2015189055A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2015189055 A1 20151217; CN 106461599 A 20170222; CN 106461599 B 20190503; DE 102014211321 A1 20151217; EP 3155411 A1 20170419; KR 102383817 B1 20220408; KR 20170018328 A 20170217
DOCDB simple family (application)
EP 2015062007 W 20150529; CN 201580031474 A 20150529; DE 102014211321 A 20140613; EP 15729362 A 20150529; KR 20167034784 A 20150529