EP 1896801 A1 20080312 - DEVICE FOR DETECTING A CAPACITANCE VARIATION AND CAPACITIVE SENSOR FOR DETECTING THE PRESENCE OF A USER USING SUCH A DEVICE
Title (en)
DEVICE FOR DETECTING A CAPACITANCE VARIATION AND CAPACITIVE SENSOR FOR DETECTING THE PRESENCE OF A USER USING SUCH A DEVICE
Title (de)
EINRICHTUNG ZUR DETEKTION EINER KAPAZITÄTSSCHWANKUNG UND KAPAZITIVER SENSOR ZUM DETEKTIEREN DER ANWESENHEIT EINES EINE SOLCHE EINRICHTUNG BENUTZENDEN BENUTZERS
Title (fr)
DISPOSITIF DE DETECTION D'UNE VARIATION DE CAPACITANCE ET CAPTEUR CAPACITIF DE DETECTION DE PRESENCE D'UN UTILISATEUR, IMPLEMENTANT UN TEL DISPOSITIF
Publication
Application
Priority
- EP 2006062693 W 20060530
- FR 0505083 A 20050601
Abstract (en)
[origin: WO2006128850A1] The invention concerns a device for detecting a capacitance variation of a variable capacitive structure (Cx), comprising: means for generating voltage pulses, means for charging the variable capacitive structure (Cx) from said voltage pulses, means for discharging said capacitive structure (Cx) to a reference capacity (Cs), means for detecting a voltage threshold at the terminals of the reference capacity (Cs), means for determining a number of charges and/or discharges of said variable capacitive structure (Cx) corresponding to said voltage threshold, and means for detecting a variation of said number of charges and/or discharges relative to a number of charges and/or discharges previously obtained. The invention is applicable in any technical field involving user detection, for example in a vehicle door handle inside a vehicle or a housing.
IPC 8 full level
G01D 5/24 (2006.01)
CPC (source: EP US)
G01D 5/2405 (2013.01 - EP US); G01R 27/2605 (2013.01 - US)
Citation (search report)
See references of WO 2006128850A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006128850 A1 20061207; WO 2006128850 A9 20070315; EP 1896801 A1 20080312; FR 2886725 A1 20061208; FR 2886725 B1 20070831; JP 2008542734 A 20081127; JP 5094714 B2 20121212; US 2010231240 A1 20100916; US 8570054 B2 20131029
DOCDB simple family (application)
EP 2006062693 W 20060530; EP 06763348 A 20060530; FR 0505083 A 20050601; JP 2008514081 A 20060530; US 91625306 A 20060530