EP 1828524 A1 20070905 - SENSOR USING THE CAPACITIVE MEASURING PRINCIPLE
Title (en)
SENSOR USING THE CAPACITIVE MEASURING PRINCIPLE
Title (de)
SENSOR MIT KAPAZITIVEM MESSPRINZIP
Title (fr)
CAPTEUR A PRINCIPE DE MESURE CAPACITIF
Publication
Application
Priority
- DE 2005002105 W 20051124
- DE 102004063108 A 20041222
- DE 102005013441 A 20050321
Abstract (en)
[origin: WO2006066524A1] The invention relates to a sensor which uses the capacitive measuring principle which is used to detect the proximity of a dielectric medium (5), preferably for detecting a human body part, which is used in an anti-pinching system. Said sensor comprises a capacitor (1) and an evaluation electronic system. The variation of the capacity of the capacitor (1), which is caused by the medium (5), can be measured. Said capacitor, which can establish a distinction between a human body part or a solid and water and/or humidity, is characterised in that the capacitor (1) can be operated in a successive manner by at least two different frequencies and/or at least two different pulse duty factors by using the different ratio of said elements in a variable electric field (4). The invention also relates to a corresponding method.
IPC 8 full level
E05F 15/00 (2006.01)
CPC (source: EP US)
E05F 15/46 (2015.01 - EP US)
Citation (search report)
See references of WO 2006066524A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 2006066524 A1 20060629; CN 101137814 A 20080305; CN 101137814 B 20120201; DE 102005013441 A1 20060706; DE 502005010530 D1 20101223; EP 1828524 A1 20070905; EP 1828524 B1 20101110; HK 1112681 A1 20080912; JP 2008524608 A 20080710; JP 4901755 B2 20120321; US 2008007274 A1 20080110; US 7545154 B2 20090609
DOCDB simple family (application)
DE 2005002105 W 20051124; CN 200580048230 A 20051124; DE 102005013441 A 20050321; DE 502005010530 T 20051124; EP 05806946 A 20051124; HK 08108214 A 20080724; JP 2007547155 A 20051124; US 76561207 A 20070620