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Structural damage monitoring system and monitoring method thereof

A technology of structural damage and monitoring system, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc. It can solve the problems of real-time (RT) system introduction, unfavorable hardware and channel expansion, and inability to realize real-time monitoring, etc., and achieve great practical application value , Improve the scanning speed and work efficiency, and improve the reliability

Active Publication Date: 2012-04-25
CHINA AIRPLANT STRENGTH RES INST
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Problems solved by technology

[0003] Existing piezoelectric damage monitoring equipment is mostly single-excitation and single-receiving equipment, with slow scanning speed and low efficiency; signal filtering mostly uses post-processing and digital filtering technology
Most of the existing technologies use stand-alone mode, which is not conducive to hardware and channel expansion, and most of the existing technologies use the Windows operating system without introducing a real-time (RT) system, so real-time monitoring cannot be realized

Method used

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  • Structural damage monitoring system and monitoring method thereof
  • Structural damage monitoring system and monitoring method thereof
  • Structural damage monitoring system and monitoring method thereof

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with specific embodiment:

[0037] Combine below figure 1 and figure 2 Specifically explain the system connection relationship, frame structure, work flow, system characteristics, and design of key technologies of the present invention.

[0038] see figure 1 , the wiring diagram of the structural damage monitoring system of the present invention. The structural damage monitoring system includes a power supply system 1, a controller 2, a power amplifier 3, a signal generator 4, a data acquisition board 5, an I / O control board 6, a charge amplifier 7, a multi-channel switching device 8, and a 24-way sensor array 9. Computer 10.

[0039] The power supply system 1, controller 2, power amplifier 3, signal generator 4, data acquisition board 5, and I / O control board 6 are integrated together, and the signal generator 4 is connected to the data acquisition board 5 and power amplifier 3 , and is uniforml...

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Abstract

The invention belongs to the technical field of structural health monitoring and relates to a structural damage monitoring system and a monitoring method thereof. The structural damage monitoring system of the invention mainly comprises a power supply system, a controller, a power amplifier, a signal generator, a data acquisition plate, an I / O control panel, a charge amplifier, a multichannel switching apparatus, a 24-channel sensor array and a computer man-machine interface. Based on active Lamb wave, the structural damage monitoring method of the invention employs a mode of foreground real-time data acquisition and background instant imaging processing and data management, so as to enhance real-time performance and reliability. Secondly, the technical implementation method realizes single point excitation in terms of hardware through connection of three charge amplifiers and three channels on the data acquisition plate; a data reception mode of simultaneous information reception of three points can carry out multiple point information reception without excitation and increase working efficiency effectively. Besides, the invention employs a multichannel switching apparatus to solve a problem of mutual interferences among sensor channels.

Description

technical field [0001] The invention belongs to the technical field of structural health monitoring, and relates to a piezoelectric structure damage monitoring system and a monitoring method thereof. Background technique [0002] With the development of science and technology, various new and complex structures have emerged one after another, making damage diagnosis and monitoring more urgent and important. Once the important parts in some structures are damaged, the degree of damage will expand very rapidly, if not found in time, it will soon lead to the destruction of the entire structure. In addition, due to the high maintenance cost required by the aging fatigue and corrosion of the structure, it is particularly important to find the damage in time and carry out maintenance at any time to save various costs. The damage diagnosis, evaluation and reinforcement technology of engineering structures has become very active in the field of structural engineering research, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/07
Inventor 孙侠生肖迎春李闵行刘国强杜振华李明白玮白生宝郭佳张昭
Owner CHINA AIRPLANT STRENGTH RES INST
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