EP 2828681 A1 20150128 - ULTRASONIC SENSOR AND METHOD FOR MEASURING AN OBJECT DISTANCE
Title (en)
ULTRASONIC SENSOR AND METHOD FOR MEASURING AN OBJECT DISTANCE
Title (de)
ULTRASCHALLSENSOR UND VERFAHREN ZUR MESSUNG EINES OBJEKTABSTANDS
Title (fr)
CAPTEUR D'ULTRASONS ET PROCÉDÉ DE MESURE DE LA DISTANCE D'UN OBJET
Publication
Application
Priority
- DE 102012204638 A 20120322
- EP 2013053326 W 20130220
Abstract (en)
[origin: WO2013139550A1] The invention relates to an ultrasonic sensor (10) for measuring the distance of an object, having a housing (20) and a damping compound (21). The latter at least partly fills the housing (20). The ultrasonic sensor (10) further comprises a membrane (30), a piezoceramic (40) and an electric contact member (22). The electric contact member (22) comprises at least one electrode (23) and a ground electrode (25). Furthermore, the piezoceramic (40) is divided into at least three segments (41, 42, 43), wherein a first segment (41) is connected to the ground electrode (25) and contact is respectively made with a second (42) and a third segment (43) via separate electrodes (23, 24). The invention further relates to a method for measuring an object distance by means of an ultrasonic sensor (10) having a piezoceramic (40), the rear side (31) of which has a first segment (41), a second segment (42) and a third segment (43). The method comprises a method step in which an opposing vibration is introduced into the vibrating membrane (30) by means of the second segment (42).
IPC 8 full level
G01S 7/521 (2006.01); B06B 1/06 (2006.01); G10K 9/125 (2006.01)
CPC (source: CN EP)
B06B 1/0622 (2013.01 - CN EP); G01S 7/521 (2013.01 - CN EP)
Citation (search report)
See references of WO 2013139550A1
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 102012204638 A1 20130926; CN 104204844 A 20141210; CN 104204844 B 20170322; EP 2828681 A1 20150128; WO 2013139550 A1 20130926
DOCDB simple family (application)
DE 102012204638 A 20120322; CN 201380015759 A 20130220; EP 13707138 A 20130220; EP 2013053326 W 20130220