公开(公告)号：US20180156901A1

公开(公告)日：2018-06-07

申请号：US15828471

申请日：2017-12-01

Applicant: MAGNA ELECTRONICS INC.

Inventor： Werner Schmitt ,  Henry Kung ,  Tzu-Nan Chen ,  Helmut A. Wodrich

IPC: G01S7/521 ,  G01S15/87 ,  G10K11/00 ,  G10K9/122

CPC classification number: G01S7/521 ,  G01S15/87 ,  G01S15/931 ,  G01S2015/938 ,  G10K9/122 ,  G10K9/22 ,  G10K11/004

Abstract: A method of making a sensing unit for a sensing system of a vehicle includes providing a first housing portion, a second housing portion, and a transducer having a piezo element. The transducer is placed in the first housing portion at the closed transducer end of the first housing portion. A dampening ring is disposed in the first housing portion between the closed transducer end and the first open receiving end of the first housing portion. A compression ring is provided and disposed at least partially into the first open receiving end of the first housing portion with wires electrically connecting the piezo element to the pins of the compression ring in the first housing portion. A PCB is disposed in the second housing portion and electrically connected to terminals of a connector portion of the second housing portion. The first housing portion is attached to the second housing portion.