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Vibrating rod working state determination method based on noise signal analysis

A technology of noise signal and working state, applied in the measurement of ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc., can solve the problems of difficulty in meeting the requirements of rapid construction and informatization of construction quality control, and difficult to implement remedial measures. The effect of dependence on artificial experience

Inactive Publication Date: 2016-01-27
SINOHYDRO BUREAU 7 CO LTD +1
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Problems solved by technology

[0003] In the traditional method of construction quality control, it is highly dependent on the consciousness and construction experience of workers. Extensive construction methods will lead to various engineering hidden dangers. Once problems are found later, remedial measures will be difficult to implement, and it is difficult to meet the needs of rapid construction and Information requirements for construction quality control

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  • Vibrating rod working state determination method based on noise signal analysis
  • Vibrating rod working state determination method based on noise signal analysis
  • Vibrating rod working state determination method based on noise signal analysis

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, and to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as Figure 1-Figure 3 As shown, the method for judging the state of the vibrating rod based on noise signal analysis designed by the present invention is designed to accurately determine the two working states of the vibrating rod in real time: no-load and loaded. Based on the TMS320VC5402 DSP development board, the specific implementation process is as follows:

[0026] 1. Initialization settings: turn off the watchdog, set serial port parameters, AD conversion related parameters (sampling frequency, sampling channel, etc.).

[0027] 2. Data collection: through the pickup, collect data for a period of time and pass McBSP (multi-channe...

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Abstract

The invention discloses a vibrating rod working state determination method based on noise signal analysis. The method comprises steps of 1, performing noise signal collection, wherein noise signals are timely collected via a pickup when a vibrating rod works; 2, performing time frequency transformation, wherein the collected noise signals are transformed into other frequency spectrums via FFT (Fast Fourier Transform); 3, selecting three feature frequency points in the obtained frequency spectrums via transformation, and performing energy statistics of the three feature points; and 4, obtaining the working state of the vibrating rod through a percentage threshold values and an energy statistics result. The invention can timely and effectively determine the working state of the vibrating rod, and provides an effective visualized guidance index for concrete construction.

Description

technical field [0001] The invention belongs to the technical field of digital signal processing, and in particular relates to a method for judging the state of a vibrator based on noise signal analysis. Background technique [0002] As the degree of industrial mechanization is getting higher and higher, how to ensure the quality of the work must be considered. In the process of concrete construction, the reliable test and overall evaluation of the vibration effect of fresh concrete pouring is one of the important links in the quality control of concrete. one. At present, the vibration quality control on the construction site is to control the insertion position of the vibrating rod, the vibration spacing, etc. through experience, so as to ensure that the concrete is vibrated compactly. In actual operation, when workers move the vibrating point, they cannot accurately grasp the position / depth / vibrating time, and it is often mostly empirical operation, which is greatly affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 李东新苏帅
Owner SINOHYDRO BUREAU 7 CO LTD
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