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Measuring device and measuring method for cable force of cable-stayed bridge based on mobile terminal

A technology of mobile terminals and measuring devices, which is applied in the directions of measuring devices, tension measurement, ultrasonic/sonic/infrasonic waves, etc. It can solve the problems of heavy wiring workload, high test cost, and large volume of measuring equipment, and achieve low cost and easy acquisition. The effect of easy and simple detection process

Inactive Publication Date: 2014-11-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Another object of the present invention is to provide a method based on the cable force measuring device of the cable-stayed bridge. Large, heavy wiring workload, high testing cost

Method used

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  • Measuring device and measuring method for cable force of cable-stayed bridge based on mobile terminal
  • Measuring device and measuring method for cable force of cable-stayed bridge based on mobile terminal

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Embodiment 1

[0028] The current mobile terminals are integrated with processors, display screens, acceleration sensors and other hardware, and with the rapid development of electronic manufacturing technology, these hardware performance is becoming more and more powerful, the accuracy is getting higher and higher, and even meet the requirements of engineering applications . Based on the above mobile terminal, this embodiment proposes the following figure 1 A cable-stayed bridge cable force measurement device based on a mobile terminal is shown, including a parameter setting module, an acceleration measurement module, a vibration data processing module, and a display module. The above modules are all software programs developed based on an intelligent mobile terminal platform. Processing is performed, and the processing result is displayed on the display screen of the mobile terminal.

[0029] The parameter setting module is used to set the physical parameters of the cable such as linear d...

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Abstract

The invention discloses a measuring device and method for cable force of a cable-stayed bridge based on a mobile terminal. An acceleration sensor is integrated on a mobile terminal; the measuring device comprises a parameter setting module, an acceleration measuring module, a vibration data processing module and a display module. The invention further discloses a measuring method. The method comprises the following steps: starting a measuring procedure on the mobile terminal, and setting physical parameters of a cable; fixing the back side of the mobile terminal on the cable; invoking an API provided by the intelligent mobile terminal to visit bottom hardware; reading a cable vibration signal of the cable-stayed bridge collected by the acceleration sensor; conducting FFT converting on the cable vibration signal of the cable-stayed bridge to obtain cable self-vibration frequency; calculating cable force according to physical relation of the cable force and the self-vibration frequency; displaying cable vibration wave form, spectrum and measuring result. The device and the method have the advantages that the measuring process is simple, the cost is low, the size is small, the carrying is convenient, and no hardware is added.

Description

technical field [0001] The invention relates to the field of vibration measurement research, in particular to a mobile terminal-based cable force measurement device and method for a cable-stayed bridge. Background technique [0002] The vibration frequency method is a very widely used method for measuring the cable tension of cable-stayed bridges. The specific principle is to use the acceleration sensor to pick up the vibration signal of a section of cable-stayed bridge cable under natural excitation, and then perform FFT transformation (fast Fourier transform) on the vibration signal. ), obtain information such as the natural frequency of the cable, and calculate the cable force through the physical relationship between the cable tension (referred to as the cable force) and the natural frequency. [0003] The pick-up of the cable vibration signal is the key link in the application of the vibration frequency method. The traditional cable dynamic measuring instrument is gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/04G01H17/00
Inventor 陈双锐颜全胜
Owner SOUTH CHINA UNIV OF TECH
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