Vibration measuring system

US7819012B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Jan Mehner · Neukirchen, DE
• Jens Makuth · Feucht, DE
• Dirk Scheibner · Nuremberg, DE

Key dates

• Filing date: Jun 12, 2006
• Grant date: Oct 26, 2010
• Expiry date: Jul 1, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01H11/06
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A vibration measuring system for the frequency-selective measuring of especially low-frequency vibrations relevant in the area of automation and motive power engineering is disclosed which allows an economical vibration analysis of frequencies in the range of from 0 to 1 kHz. For this purpose, a broad-band transmitting structure which is directly induced by the excitation signal to be determined is coupled to a receiving structure by an electrostatic or inductive force. This force coupling brings about an amplitude modulation of a carrier signal inducing the receiving structure. The spectrum of the amplitude-modulated carrier signal can then be used to extract the actual excitation signal, e.g. by suitably choosing the frequency of the carrier signal.