EP 3017318 A1 20160511 - PROXIMITY SENSOR AND METHOD FOR MEASURING THE DISTANCE FROM AN OBJECT
Title (en)
PROXIMITY SENSOR AND METHOD FOR MEASURING THE DISTANCE FROM AN OBJECT
Title (de)
NÄHERUNGSSENSOR UND VERFAHREN ZUR MESSUNG DES ABSTANDS EINES OBJEKTS
Title (fr)
CAPTEUR DE PROXIMITÉ ET PROCÉDÉ POUR MESURER LA DISTANCE D'UN OBJET
Publication
Application
Priority
DE 2013000342 W 20130701
Abstract (en)
[origin: WO2015000452A1] The invention relates to a proximity sensor (10) and to a method for measuring the distance (D) from an object (12). The proximity sensor (10) contains a microwave oscillator (52) which provides, as an output signal (54), a transmission wave (16) which is emitted by the proximity sensor (10) in the direction of the object (12) as a free space transmission wave (16c) which is reflected by the object (12), which is electrically conductive or has at least one electrically conductive surface, as a free space reflection wave (30a) and is received by the proximity sensor (10) as a reflection wave (30), wherein the reflection coefficient (Γ) is determined from the transmission wave (16) and the reflection wave (30) and is provided by the proximity sensor (10) as a measure of the distance (D). The proximity sensor (10) according to the invention and the method according to the invention are distinguished by the fact that the transmission wave (16) is guided in a waveguide (22) as a waveguide transmission wave (16b), that the transmission wave (16) is injected into the waveguide (22) with a wave mode which results in the waveguide transmission wave (16b) being separated at the aperture (26) at the front end of the waveguide (22) into the free space transmission wave (16c) and in the free space transmission wave (16c) propagating to the object (12).
IPC 8 full level
G01S 13/32 (2006.01); G01S 13/36 (2006.01)
CPC (source: CN EP US)
G01S 13/32 (2013.01 - CN EP US); G01S 13/36 (2013.01 - CN EP US); G01S 7/358 (2021.05 - US)
Citation (search report)
See references of WO 2015000452A1
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 2015000452 A1 20150108; CN 105051567 A 20151111; CN 105051567 B 20180330; EP 3017318 A1 20160511; US 10132922 B2 20181120; US 2016124083 A1 20160505
DOCDB simple family (application)
DE 2013000342 W 20130701; CN 201380074940 A 20130701; EP 13753410 A 20130701; US 201314895012 A 20130701