Method of and a device for acoustically monitoring the...

Details Method of and a device for acoustically monitoring the... Method of and a device for acoustically monitoring the...

2006-04-18

2006-04-18

Patel, Harshad (Department: 2855)

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

Reexamination Certificate

active

07028559

ABSTRACT:
The invention relates to a method of acoustically monitoring the course of a process, in which method the amplitude difference and/or the intensity value of sound are/is measured during the process, and the amplitudes and/or the intensity values of the sound and/or the vibrations are measured continuously or with an adjustable frequency by means of a sound and/or vibration sensor (4), such as a piezoelectric transducer (12), during the entire process or part of the process and are compared mutually and/or with a predetermined threshold value and/or reference value and/or reference pattern for the purpose of drawing, on the basis thereof, conclusions in relation to the progress and/or the course of the process and/or the presence of disturbances and/or deviations in the course of the process.

REFERENCES:
patent: 4322982 (1982-04-01), Muller et al.
patent: 4621929 (1986-11-01), Phillips
patent: 5392635 (1995-02-01), Cadet et al.
patent: 6282966 (2001-09-01), Probst et al.
patent: 6422093 (2002-07-01), Feller

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