| 54 |
Title |
TI |
[EN] METHOD AND ANALYSIS SYSTEM FOR DETERMINING A STATE OF A DIAPHRAGM OF AN ULTRASOUND SENSOR |
| 71/73 |
Applicant/owner |
PA |
VALEO SCHALTER & SENSOREN GMBH
|
| 72 |
Inventor |
IN |
GULAGUNDI RAGHAVENDRA
;
HAAG FABIAN
;
HAFNER BASTIAN
;
POEPPERL MAXIMILIAN
|
| 22/96 |
Application date |
AD |
Nov 7, 2019 |
| 21 |
Application number |
AN |
201980087108 |
|
Country of application |
AC |
CN |
|
Publication date |
PUB |
Aug 17, 2021 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
DE
102018129044
Nov 19, 2018
|
33
31
32 |
PRC
PRN
PRD |
EP
2019080457
Nov 7, 2019
|
| 51 |
IPC main class |
ICM |
G01S 7/52
(2006.01)
|
| 51 |
IPC secondary class |
ICS |
G01S 15/10
(2006.01)
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
G01S 15/104
G01S 15/34
G01S 15/931
G01S 2007/52009
G01S 7/52004
|
|
MCD main class |
MCM |
G01S 7/52
(2006.01)
|
|
MCD secondary class |
MCS |
G01S 15/10
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] The invention proposes a method and an analysis system which can determine a state of a diaphragm (20) of an ultrasound sensor (10) during operation. The diaphragm (20) of the ultrasound sensor (10) is excited with a first excitation signal in a prespecified first frequency profile. On this basis, a first voltage profile (29) is measured, which first voltage profile is dependent on a frequency (F) of the first excitation signal. Analogously, a second voltage profile (31) is ascertained by applying a second excitation signal to the diaphragm (20) and subsequent measurement. These two voltage profiles are shifted such that respective positions of maxima (M1, M2) of the two voltage profiles (29, 31) are approximated to one another in a prespecified frequency range (F'). A third voltage profile (30) is ascertained, which third voltage profile runs between the shifted first and second voltage profiles (29', 31'). On the basis of the third voltage profile (30), electrical parameters (Rp, Rs, Cp, Cs, Lp, Ls) are ascertained by means of a model for continuous excitation of the diaphragm (20) in order to determine the state of the diaphragm (20). |
| 56 |
Cited documents identified in the search |
CT |
SG000000064805A1
CN000101322044A
CN000104115026A
CN000104750978A
CN000104808195A
CN000105556336A
CN000105916079A
CN000108007557A
CN000108307284A
CN000108654967A
CN000206097107U
DE102012216968A1
DE102014113601A1
JP000H06232232A
US000006314380B1
US020100329080A1
US020120279283A1
US020130331678A1
US020150030169A1
US020160113625A1
US020170353795A1
WO002013107564A1
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
???,???,????: "?????????????????", ⟪??.?????⟫, vol. 38, no. 01, pages 3 - 79 0
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
|
