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Method and device for measuring fundamental frequency of stay wire

A measurement method and fundamental frequency technology, which can be used in measurement devices, tension measurement, force/torque/work measurement instruments, etc. Effect

Active Publication Date: 2017-06-20
北京掌尚信控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] The embodiment of the present invention provides a method and device for measuring the fundamental frequency of the cable to at least solve the technical problem of low measurement accuracy of the method for measuring the fundamental frequency of the cable in the prior art

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  • Method and device for measuring fundamental frequency of stay wire
  • Method and device for measuring fundamental frequency of stay wire
  • Method and device for measuring fundamental frequency of stay wire

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Embodiment 1

[0066] According to an embodiment of the present invention, an embodiment of a method for measuring the fundamental frequency of a pull-wire is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

[0067] figure 1 is a flow chart of a method for measuring the fundamental frequency of a pull wire according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0068] Step S102, acquiring a vibration spectrum, wherein the vibration spectrum includes: a plurality of frequency points, and a frequency point value and an amplitude value of each frequency point.

[0069] Specifically, the frequency value of each frequency point may be the ...

Embodiment 2

[0141] According to an embodiment of the present invention, an embodiment of an apparatus for measuring the fundamental frequency of a pull-wire is provided.

[0142] Figure 4 is a schematic diagram of a device for measuring the fundamental frequency of a pull wire according to an embodiment of the present invention, such as Figure 4 As shown, the device includes the following steps:

[0143] The first acquiring unit 41 is configured to acquire a vibration spectrum, wherein the vibration spectrum includes: a plurality of frequency points, and a frequency point value and an amplitude value of each frequency point.

[0144] Specifically, the frequency value of each frequency point may be the abscissa of each frequency point in the vibration spectrum, that is, the frequency point is the first frequency point in the multiple frequency points; the amplitude value of each frequency point may be The ordinate of each frequency point in the vibration spectrum, that is, the amplitud...

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Abstract

The invention discloses a method and device for measuring the fundamental frequency of a stay wire. The method comprises the steps: obtaining the vibration frequency spectrum, wherein the vibration frequency spectrum comprises a plurality of frequency points, and the frequency value and amplitude value of each frequency point; dividing the vibration frequency spectrum, and obtaining a plurality of frequency point sets; obtaining the frequency point, corresponding to the maximum amplitude value, in each frequency point set, and obtaining a plurality of target frequency points; and obtaining the fundamental frequency of the stay wire based on the frequency value corresponding to the frequency value of each target frequency point and the number of the target frequency points. The method solves a technical problem that the measurement method of the fundamental frequency of the stay wire is low in accuracy in the prior art.

Description

technical field [0001] The invention relates to the field of power transmission lines, in particular, to a method and device for measuring the fundamental frequency of a pull wire. Background technique [0002] At present, there are still a considerable number of cable-stayed towers in overhead transmission lines at home and abroad. Due to structural reasons, especially the improper adjustment of cable tension (or operating tension) (not meeting the design requirements) or the unbalanced tension between cables, it has become a tower collapse accident. Therefore, the measurement and monitoring of wire tension is particularly important. The existing measurement methods are: [0003] Oil pressure gauge method: The tension is directly read from the calibrated oil pressure gauge on the tensioning system; [0004] Sensor method: place a pressure sensor between the cable or boom anchor head and the backing plate to measure its tension; [0005] Vibration spectrum method: After m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/04
CPCG01L5/042
Inventor 杨济源李建刚丁涛王培峰肖保锋
Owner 北京掌尚信控科技有限公司