Title:
ACOUSTIC DIAGNOSTIC SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO1999054703
Kind Code:
A3
Abstract:
The invention relates to an acoustic diagnostic system (D) for carrying out quality control, especially automatic quality control, of test objects (1), especially engines, ceramics, etc. The system comprises sensor technology (2), especially sound sensors, for converting mechanical vibrations into electrical signals (E), signal conditioning (3a, 3b) for amplifying and low-pass filtering the electrical signals (E). The inventive system also comprises an analog-digital converter (3c) for converting the amplified and low-pass filtered signals into discrete digital values and a signal processing unit (4) for analyzing the signals, extracting characteristics and classifying the errors and/or quality class assigned to a test object (1). The system also has means for automatically filing the occurrence and the frequency of quality and/or error classes. The diagnostic system can also comprises control means to control a production process for manufacturing test objects (1).
Inventors:
HARTMANN DORIS (DE)
KACEM SOFIANE (DE)
MAIER KARL-HEINZ (DE)
PLEWINSKI NICOLAI (DE)
VOELKEL THOMAS (DE)
KACEM SOFIANE (DE)
MAIER KARL-HEINZ (DE)
PLEWINSKI NICOLAI (DE)
VOELKEL THOMAS (DE)
Application Number:
PCT/DE1999/001118
Publication Date:
December 23, 1999
Filing Date:
April 14, 1999
Export Citation:
Assignee:
SIEMENS AG (DE)
HARTMANN DORIS (DE)
KACEM SOFIANE (DE)
MAIER KARL HEINZ (DE)
PLEWINSKI NICOLAI (DE)
VOELKEL THOMAS (DE)
HARTMANN DORIS (DE)
KACEM SOFIANE (DE)
MAIER KARL HEINZ (DE)
PLEWINSKI NICOLAI (DE)
VOELKEL THOMAS (DE)
International Classes:
G01M7/00; G01M13/02; G01M15/00; G01M15/12; G01N29/04; G01N29/14; G01N29/44; (IPC1-7): G01M15/00; G01M7/00; G01M13/02; G01N29/04; G01N29/14
Foreign References:
| US5511004A | 1996-04-23 | |||
| DE4207728A1 | 1993-09-23 |
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