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

A crack width, remote monitoring technology, applied in the direction of measuring devices, radio wave measuring systems, instruments, etc., can solve the problems of low measurement efficiency, poor real-time performance, inability to monitor crack width and image data dangerous cracks in real time, and reduce labor costs. Strength, good real-time performance, reduce the effect of on-site measurement

Inactive Publication Date: 2009-08-19
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] Combine now Figure 2-Figure 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] refer to figure 2 , The automatic interpretation function of the measuring instrument is realized through relevant 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 center) i...

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Abstract

The invention relates to a concrete crack width measuring instrument suitable for remote monitoring and a measuring method, which is mainly used for local automatic interpretation of the concrete crack width. The hardware module part includes camera, image acquisition module, DSP, image display module, network module, external storage space, interrupt control module, display and peripheral circuits. The image acquisition module converts the acquired analog video signal into a digital signal and sends it to DSP for processing. After the DSP receives the digital video signal, it processes the crack image, calculates the crack width value, and then sends the digital video signal with the crack width value to the network module or image display module. The processing methods mainly include image interception, image segmentation, anti-color processing, area marking, small area elimination, width measurement, image scale, width display, and output image synthesis. The invention reduces errors in concrete crack width measurement to a certain extent, 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 Patents(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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