US 6,386,040 B1 · Method and system for combined vibration measurements

Abstract

A method and a system for measuring the mechanical vibrations of an object. In order to simplify the electronic circuit necessary for the measurement chain and to reduce its costs, this method and this system are characterized in that they comprise the processing of an input signal, representative of an acceleration or of a velocity related to a mechanical vibration of said object, said input signal having a frequency spectrum comprising a so-called low frequency band, situated below a so-called transition frequency, and a so-called high frequency band, situated above said transition frequency, said method and system carrying out said processing of said input signal by means of an electronic circuit for producing an output signal which, in said low frequency band, corresponds to the mathematical integral over the time of said input signal, and, in said high frequency band, corresponds to said input signal.

Claims18

Dependent claims

A method for measuring the mechanical vibrations of an object, comprising the steps of:

electronically processing an input signal, representative of an acceleration related to a mechanical vibration of said object and having a frequency spectrum comprising a low-frequency band situated below a transition frequency and a high-frequency band situated above said transition frequency,
said processing being carried out by an electronic circuit which is adapted to provide an output signal which
within said low-frequency band corresponds to the mathematical integral over the time of said input signal, and thereby to the vibration velocity of said object, and
within said high-frequency band corresponds to the input signal, and thereby to the vibration acceleration of said object.

1 more element

A system for measuring the mechanical vibrations of an object, comprising:

(a) a transducer mounted on said object and being capable of providing at an output port an output signal which is representative of an acceleration related to a mechanical vibration of said object, said output signal comprising a low-frequency band situated below a transition frequency and a high-frequency band situated above said transition frequency,
(b) an electronic circuit having an input port, connected to the output port of said transducer, and an output port, said circuit being adapted to process said output signal of said transducer to yield an output signal which within said low-frequency band corresponds to the mathematical integral over the time of said input signal, and which within said high-frequency band corresponds to said input signal.

Dependencies are inferred from the claim text.

Method and system for combined vibration measurements

Life of this patent

Method and system for combined vibration measurements

Life of this patent

Abstract

Claims18