Method and device for recognizing a state of a noise-generating machine to be studied

A noise and state technology, which is used in the field of state identification and devices for machines to be inspected that generate noise, can solve the problems of different noise signals or acoustic emission, noise signal deviation, etc.

Inactive Publication Date: 2011-04-13
SIEMENS AG
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Problems solved by technology

[0004] A disadvantage of traditional methods is that, even under normal and trouble-free operating conditions, the noise signature or acoustic emission emitted by the finished product is different from or deviates from the noise signature of the prototype body

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  • Method and device for recognizing a state of a noise-generating machine to be studied

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Embodiment Construction

[0028] From figure 1 It can be seen that, in step S1 of the method of the present invention, firstly, a reference object of the object to be inspected that generates noise is recorded by means of a recorder or a sensor. The reference object may refer to a prototype of the object to be checked. The object to be checked is, for example, a machine or a device that generates noise during operation. The noise signal may be an air noise signal or a structure noise signal. The device to be tested can also be a device, such as a chemical device that generates noise during its chemical production, for example inside a container or a pipeline. Noise and vibration signals are recorded by a recorder. These recorders have microphones or other vibration sensors, especially accelerometers. The recorder or vibration sensor converts noise or vibration signals into electrical signals. Preferably multiple recordings are made of a reference or prototype body at different time points and unde...

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Abstract

The invention relates to a method and a device for recognizing a state of a noise-generating object (2) to be studied, wherein a statistical basic classification model of acoustic features, which is generated for at least one reference object, is automatically adapted by a data processing unit (5) on the basis of acoustic features of a noise generated by the object (2) to be studied, wherein said data processing unit (5) classifies said state of said noise-generating object (2) to be studied on the basis of the adapted statistical classification model.

Description

technical field [0001] The invention relates to a method and a device for detecting the state of a noise-generating machine under inspection, which emits structural or airborne noise. Background technique [0002] Machines generate vibration signals during motion, especially acoustic vibration signals. From the vibration signals generated by a machine, plant or electromechanical installation, it is possible to infer its actual state, which may change, for example, due to wear phenomena. For example, a machine or installation that has been used for many years emits a different vibration signature due to wear than when it was first delivered. In addition to machines, chemical plants can also generate noise signals, for example due to air bubbles in containers or lines. Aging or wear of equipment, machines or installations can alter the vibration signatures produced, especially the acoustic emissions. In addition to wear, the vibration signatures and especially the acoustic ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/12G01M99/00
CPCG01M15/12G06N99/00
Inventor 卢茨·罗伊泰尔特约阿西姆·霍费尔
Owner SIEMENS AG
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