EP 3180858 A1 20170621 - SENSOR SYSTEM AND METHOD FOR THE CAPACITIVE DETECTION OF OBSTACLES
Title (en)
SENSOR SYSTEM AND METHOD FOR THE CAPACITIVE DETECTION OF OBSTACLES
Title (de)
SENSORSYSTEM UND VERFAHREN ZUR KAPAZITIVEN ERFASSUNG VON HINDERNISSEN
Title (fr)
SYSTÈME DE CAPTEUR ET PROCÉDÉ D'ENREGISTREMENT CAPACITIF D'OBSTACLES
Publication
Application
Priority
- DE 102014216247 A 20140815
- EP 2015068370 W 20150810
Abstract (en)
[origin: WO2016023863A1] The invention relates to a sensor system for the capacitive detection of obstacles, comprising a capacitive sensor having at least two conductive elements (14, 16) and a control circuit (18, 20) which is joined to the at least two conductive elements and which has a bridge circuit (24), wherein a first end (P1) of the bridge branch is connected to a conductive element (14) of the sensor that is downstream in the direction of detection, and a second end (P2) is connected to an upstream conductor (16) of the switching strip profile (10), wherein, by means of a control section (18) of the control circuit, a control signal is generated and fed into both conductive elements, and the total of the impedances (Z2, Z3) of the bridge circuit connected to the first end of the bridge branch is smaller than the total of the impedances (Z4, Z5) of the bridge circuit connected to the second end of the bridge branch, wherein an electronic evaluation device (20) is provided for evaluating a voltage difference between the first and the second end of the bridge branch.
IPC 8 full level
H03K 17/955 (2006.01)
CPC (source: EP US)
G01D 5/24 (2013.01 - EP US); H03K 17/955 (2013.01 - EP US); H03K 2217/960745 (2013.01 - EP US); H03K 2217/96075 (2013.01 - EP US)
Citation (search report)
See references of WO 2016023863A1
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)
DE 102014216247 A1 20160218; DE 102014216247 B4 20190613; EP 3180858 A1 20170621; US 2017219386 A1 20170803; WO 2016023863 A1 20160218
DOCDB simple family (application)
DE 102014216247 A 20140815; EP 15749792 A 20150810; EP 2015068370 W 20150810; US 201515501567 A 20150810