Measurement instrument and method suitable for remotely monitoring crack width of concrete

A technology for crack width and remote monitoring, which is applied in measuring devices, radio wave measuring systems, instruments, etc. It can solve the problems of poor real-time performance, inability to monitor crack width and dangerous cracks with image data, and low measurement efficiency, and achieve real-time performance Good, reduce the effect of on-site measurement and labor intensity

Inactive Publication Date: 2007-09-12
BEIJING UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to overcome that the existing concrete crack width measuring instrument is limited to local automatic interpretation, and cannot transmit the crack width and image data to the remote network and perform remote real-time monitoring of a certain section of dangerous cracks, resulting in poor real-time performance and low measurement efficiency

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  • Measurement instrument and method suitable for remotely monitoring crack width of concrete
  • Measurement instrument and method suitable for remotely monitoring crack width of concrete
  • Measurement instrument and method suitable for remotely monitoring crack width of concrete

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Embodiment Construction

[0024] Now in conjunction with Fig. 2-Fig. 14 the present invention is described further:

[0025] A concrete crack width measuring instrument with a digital signal processor (DSP) as the core and an automatic interpretation function. The whole instrument includes a camera, an image acquisition module, a DSP, a network module, an image display module, a network interface circuit, a reset circuit, Simulation circuit, button circuit, clock circuit, storage circuit, mode selection circuit, power conversion circuit, connector circuit and display.

[0026] Referring to Fig. 2, the automatic interpretation function of the measuring instrument is realized through related image processing methods. The first step: image capture. This function is to center the crack image of 720×576 pixels with the cross ruler so that the image is located in the center of the display screen, and then intercept a crack image area of ​​300×576 pixels (150 pixels left and right with the crack as the cente...

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Abstract

This invention relates to the width measurement of the concrete cracks and its method proper to the remote supervisory and control which mainly apply to the local automated interpretation of the concrete cracks width. The hardware modules includes the cameras, image acquisition module, DSP, image display module, network modules, expanding storage space, interrupt controller module, display and the external circuit. The image acquisition module converts the analog video signal into the digital signal and then be processed by the DSP. After the digital signal received the DSP processes the crack image, calculate the crack width and then pass the digital video signals with the width of crack to the network modules or image display module. The processing method mainly includes image interception, image segmentation, anti-color processing, regional markers, small elimination, width measurement, image gauge, width, output image synthesis. This invention, to some extent, reduces the occurrence of errors in the measurement of concrete crack width and facilitates real-time monitoring of dangerous cracks.

Description

technical field [0001] The invention relates to a concrete crack width measuring instrument suitable for remote monitoring, which is mainly used for local automatic interpretation of concrete crack width, remote network transmission of crack width and image data, and remote real-time network monitoring of dangerous cracks at a certain section. Background technique [0002] The general detection standard for concrete cracks stipulates that the maximum crack width is 0.2mm. Concrete cracks that exceed this standard will seriously reduce the bearing capacity of concrete materials and endanger people's lives. Therefore, it is of great significance to quickly and accurately measure the fracture width on site, conduct remote real-time monitoring of individual dangerous fractures, and conduct remote network transmission and analysis of fracture width and image data. At present, the most widely used method for measuring the width of cracks in China is the reading microscope method....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02G01B21/02G01C11/36G01N21/88
Inventor 吴斌王芹胡彦彦何存富宋国荣
Owner BEIJING UNIV OF TECH
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