A vibration source identification method and system based on time-domain two-dimensional characteristics
A vibration source and two-dimensional feature technology, which is applied in the direction of instruments, measuring devices, and wave/particle radiation, can solve the problems of lack of vibration source identification methods, achieve accurate and timely response, and the identification process is fast and effective.
Active Publication Date: 2019-10-01
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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[0005] The main problem in the existing research is the lack of suitable vibration source identification method, therefore, it is necessary to establish an effective vibration source identification method to realize the identification of vibration signals, so as to reduce the error rate of vibration source identification
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[0087] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0088] Embodiment 1 of the present invention provides a specific implementation manner of a vibration source identification method based on time-domain two-dimensional characteristics. see figure 1 , the identification method specifically includes the following content:
[0089] Step 100: Denoise the vibration signals of the current vibration so...
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The invention provides a method and system for identifying a vibration source based on two-dimensional characteristics of a time domain. The method comprises the following steps of carrying out de-noising processing and threshold detection on vibration signals of a current vibration source on multiple alarm points, determining duty ratios of various vibration signals and obtaining over-mean-value frequencies of the vibration signals; and generating two-dimensional characteristic vector of the time domain according to the duty ratios and the over-mean-value frequencies, inputting the two-dimensional characteristic vector of the time domain into a random vector function link (RVFL) network for parameter training and judging whether the current vibration source is a driving vibration source or not according to the parameter training result. The system comprises a de-noising processing unit, a duty ratio obtaining unit, a over-mean-value frequency obtaining unit, a time domain two-dimensional characteristic obtaining unit and a vibration source judgment unit. According to the method and the system, a driving vibration signal can be accurately identified according to the two-dimensional characteristics of the time domain, the identification process is fast and effective, a reliable vibration source judgment basis is provided for a control center, so that the control center can make an accurate and timely response according to the type of the vibration source.
Description
technical field [0001] The invention relates to the technical field of vibration source identification, in particular to a vibration source identification method and system based on time-domain two-dimensional characteristics. Background technique [0002] In recent years, with the rapid development of the global economy, people's demand for energy is increasing, and pipeline transportation has become the main way of transporting energy. One of its main risks is pipeline leakage, which not only leads to energy waste and environmental pollution, but also may pose a huge threat to people's lives and property safety. Therefore, protecting the oil and gas pipelines accompanied by optical cables is called the primary task of the current optical fiber early warning system. [0003] The fiber optic vibration safety early warning system can collect various vibration signals around these important areas, and by analyzing the characteristics of the surrounding vibration signals, the t...
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IPC IPC(8): G01H9/00
Inventor 曲洪权赵璐付硕盛智勇杨丹
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY