Mechanical device vibration signal monitoring adaptive variable sampling method and device

A vibration signal and mechanical equipment technology, applied in the direction of measuring devices, using electrical devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of poor versatility, limited versatility, difficulty in implementation, etc. The effect of reducing energy consumption and storage resource pressure and reducing the amount of data collection

A vibration signal and mechanical equipment technology, applied in the direction of measuring devices, using electrical devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of poor versatility, limited versatility, difficulty in implementation, etc. The effect of reducing energy consumption and storage resource pressure and reducing the amount of data collection

CN108267218AInactive Publication Date: 2018-07-10CHINA UNIV OF PETROLEUM (BEIJING)
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  • Mechanical device vibration signal monitoring adaptive variable sampling method and device
  • Mechanical device vibration signal monitoring adaptive variable sampling method and device
  • Mechanical device vibration signal monitoring adaptive variable sampling method and device

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[0053] In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described The embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of this application. For example, in the following description, forming the second part above the first part may include an embodiment in which the first part and the second part are formed in a direct contact manner, and may also include an embodiment in which the first part and the second part are formed in a non-direct contact manner ( That is,...

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Abstract

The embodiment of the invention provides a mechanical device vibration signal monitoring adaptive variable sampling method and device. The method comprises the steps of: collecting vibration signals of a mechanical device; performing time-domain analysis and frequency-domain analysis of the vibration signals to correspondingly confirm whether the vibration severity and a fault feature frequency amplitude of the mechanical device are abnormal or not; if yes, adaptively improving a sampling rate of the next sampling; or else, adaptively reducing the sampling rate of the next sampling. Accordingto the embodiment of the invention, the mechanical device vibration monitoring system energy consumption and data bulk can be reduced, and the universality is good.

Description

technical field [0001] The present application relates to the technical field of mechanical equipment vibration monitoring, and in particular, to an adaptive variable sampling method and device for mechanical equipment vibration signal monitoring. Background technique [0002] In traditional mechanical equipment vibration signal acquisition, a fixed sampling rate is usually set at the highest possible fault frequency according to Nyquist's law. However, under normal conditions, the vibration frequency of mechanical equipment is low, and an excessively high sampling rate will increase data redundancy and increase the energy consumption of the acquisition system. This limitation is especially reflected in wireless sensor networks that require very strict energy consumption control. In sensor nodes, the energy consumption of data transmission is much greater than that of data processing. Therefore, the energy consumption of sensor networks with limited bandwidth can be reduced...

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Application Information

Patent Timeline
10 Jul 2018
Publication
CN108267218A
IPC
G01H11/06
CPC
G01H11/06
Inventors
段礼祥; 张来斌