Virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing

A technology of synthetic aperture focusing and ultrasonic imaging detection, applied in radio wave measurement systems, instruments, analysis of solids using sonic/ultrasonic/infrasonic waves, etc. The effect of compactness, high degree of integration and simple operation process

Inactive Publication Date: 2010-12-29
PLA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In short, the existing detection equipment mainly has the following shortcomings: 1) The structure is complex and huge; 2) The operation is complicated and the data processing is cumbersome; 3) The detection efficiency is not high

Method used

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  • Virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing
  • Virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing
  • Virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1As shown, the synthetic aperture focused ultrasonic imaging detection system based on virtual instrument of the present invention includes virtual instrument system, 12-way transducer array, the transducer array controller and UPS uninterruptible power supply that can control 24-way transducer array , where the virtual instrument system includes a high-voltage pulse generator, a signal amplifier, a high-speed signal collector and a micro-industrial computer equipped with Labview software programs, all of which have a PXI interface. The micro-industrial computer has a touch screen, a high-voltage pulse generator, a signal amplifier and The high-speed signal collector is integrated in the micro-industrial computer, and the micro-industrial computer is connected to the transducer array controller through a shielded cable through the RS232 serial communication port to ensure the reliability of communication. The transducer array controller and the transducer ...

Embodiment 2

[0042] Such as figure 2 , image 3 As shown, the steps of the synthetic aperture focused ultrasound imaging detection system based on virtual instrument of the present invention are as follows:

[0043] 1) Place the transducer array on the surface of the structure to be tested;

[0044] 2) Turn on the high voltage pulse source;

[0045] 3) Operate the micro industrial computer, run the Labview software program, and enter the man-machine interface;

[0046] 4) Adjust the signal amplifier and set the acquisition parameters; the gain of the amplifier can be adjusted in advance to make the acquisition signal amplitude moderate;

[0047] 5) Select "manual collection" or "automatic collection", select "rough inspection" or "fine inspection"; manual collection can carefully check whether the collected signal is stable, but each channel needs to store data manually. When collecting automatically or manually, you can also choose rough inspection or fine inspection. The rough inspe...

Embodiment 3

[0052] Utilize detection system of the present invention to be 30cm to thickness, the concrete test piece (as Figure 4 shown) for detection, and scan and image it with an array scanning device. from Figure 5 It can be seen that the dotted line indicates the position of the bottom surface of the test block, and the ground image of the test block is very blurred, indicating that the reflected signal strength is very small, which is the result of the ultrasonic wave being absorbed and weakened by the reflected wave.

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Abstract

The invention relates to virtual instrument based system and method for detecting ultrasonic imaging by synthetic aperture focusing. The virtual instrument based system comprises a virtual instrument system, a 12-way energy converter array, an energy converter array controller and a UPS (Uninterruptible Power Supply), wherein the energy converter array controller can control a 24-way energy converter array, the virtual instrument system comprises a high-voltage pulse generator, a signal amplifier, a high-speed signal collector and a mini-size industrial personal computer which are all provided with PXI interfaces, wherein the mini-size industrial personal computer is equipped with a Labview software program. The invention adopts the integrated design, thereby having compact structure and being convenient for carrying, remote transportation and outdoor work; the invention adopts human-machine interface, thereby having high intellectualization and integration degree and simple operation procedure; the invention adopts a rough detection process and a detailed detection process, can reach an area of 60cm through primary rough detection, can detect structures with high requirements for resolution ratio through detailed detection and achieve the resolution ratio of 1cm; and the system can remotely control the signal amplifier and the energy converter array, and the detection function of the system can be fulfilled by only operating the industrial personal computer.

Description

technical field [0001] The invention relates to an ultrasonic imaging non-destructive testing system and a method thereof, in particular to a virtual instrument-based synthetic aperture focused ultrasonic imaging testing system and a method thereof. Background technique [0002] Concrete ultrasonic non-destructive imaging detection technology helps to evaluate the stability and integrity of old and new buildings, can monitor the quality status of the whole or part of new and old buildings, can be used to estimate the properties and performance of building materials and structures, and can The measurement and location of internal moisture content, defects and damage can also be used to determine the position of prestressed elements inside building materials and structures to avoid accidental damage when drilling holes in building materials. [0003] With the large-scale use of concrete, the need to detect the strength, internal defects, cracks and other characteristics of new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/89G01N29/06
Inventor 石立华邵志学蔡建李炎新
Owner PLA UNIV OF SCI & TECH
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