EP 2591345 A1 20130515 - DETECTING A DIELECTRIC ARTICLE
Title (en)
DETECTING A DIELECTRIC ARTICLE
Title (de)
ERFASSUNG EINES DIELEKTRISCHEN GEGENSTANDES
Title (fr)
DÉTECTION D'UN OBJET DIÉLECTRIQUE
Publication
Application
Priority
- DE 102010031034 A 20100707
- EP 2011057577 W 20110511
Abstract (en)
[origin: WO2012004028A1] A device (300) for detecting a dielectric object (120) comprises a first (E1) and a second electrode (E2), a first unit (FF1) for determining a first capacitance (C1) between the first electrode and a common reference point (E0) and which can be influenced by the object, and a second unit (FF2) for determining a second capacitance (C2) between the second electrode and the ground point and which can be influenced by the article. Furthermore, a control unit (PWM) for actuating the units and an evaluating unit (FF3) for detecting the object are provided, if the determined capacitances differ by more than a predetermined amount from each other. The control unit is designed to actuate the units in such a manner that the determinations are carried out in succession, and a switching unit (S1, S2, FF1, FF2) is provided in order to electrically connect the electrode of the respective non-actuated unit to the common reference point.
IPC 8 full level
G01N 27/22 (2006.01); G01F 23/26 (2006.01); G01V 3/08 (2006.01)
CPC (source: EP US)
G01F 23/266 (2013.01 - EP US); G01F 23/268 (2013.01 - EP US); G01N 27/221 (2013.01 - EP US); G01R 27/2605 (2013.01 - US); G01V 3/088 (2013.01 - EP US)
Citation (search report)
See references of WO 2012004028A1
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
DOCDB simple family (publication)
DE 102010031034 A1 20120112; CN 102959390 A 20130306; EP 2591345 A1 20130515; US 2013207674 A1 20130815; US 9244104 B2 20160126; WO 2012004028 A1 20120112
DOCDB simple family (application)
DE 102010031034 A 20100707; CN 201180033242 A 20110511; EP 11719002 A 20110511; EP 2011057577 W 20110511; US 201113808699 A 20110511