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Bridge apparent state automatic detection device and method based on charge coupled device (CCD) array photographic technique

An automatic detection device and bridge technology, applied in the direction of optical testing flaws/defects, etc., can solve problems such as danger and low efficiency, and achieve the effects of saving time, improving work efficiency and precision

Inactive Publication Date: 2011-09-14
单宝华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commonly used manual detection methods for bridge structural cracks are inefficient and dangerous

Method used

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  • Bridge apparent state automatic detection device and method based on charge coupled device (CCD) array photographic technique
  • Bridge apparent state automatic detection device and method based on charge coupled device (CCD) array photographic technique
  • Bridge apparent state automatic detection device and method based on charge coupled device (CCD) array photographic technique

Examples

Experimental program
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Effect test

Embodiment 1

[0040]Embodiment 1: a kind of bridge apparent state automatic detection device based on CCD array camera technology, it is made up of CCD camera array, scanning frame, image acquisition card, computer and inspection car, it is characterized in that: CCD camera array is installed On the scanning frame, the bottom of the scanning frame is fixed on the inspection vehicle located on the bridge deck or under the bridge. The CCD camera array is connected to the image acquisition card through wires. The image acquisition card is installed on the computer. The bottom and side defect images are transmitted to the computer, and the synthesis, processing, defect identification and data management of the apparent defect images of the bridge are realized through the detection management software. Described CCD camera array comprises many identical models, the CCD camera with high image resolution is connected side by side, CCD camera comprises optical lens and is connected with CCD sensor, ...

Embodiment 2

[0041] Example 2: Combining Figure 1-Figure 3 , the present invention is based on the automatic detection device of the bridge appearance state of a kind of CCD array camera technology, and the detection work process is as follows: before the inspection, the inspection personnel fix the bottom of the scanning frame on the inspection vehicle on the bridge surface, and carry a plurality of CCD cameras The scanning frame is suspended under the bridge deck. During the detection, the CCD camera array combination keeps climbing with the scanning frame, and by adjusting the height of the scanning frame, the imaging range of the CCD array camera covers the inspection area at the bottom or side of the bridge. Then set the starting point of the inspection, control the inspection vehicle to move on the bridge surface and drag the scanning frame to drive the CCD array camera to start inspection. During the inspection process, the inspection and evaluation software synchronously displays...

Embodiment 3

[0043] combine figure 1 , the bridge appearance state automatic detection device based on CCD array camera technology uses multiple CCD array cameras to collect multiple images of bridge structure appearance defects in real time. A variety of denoising algorithms were used to preprocess the defect image; the detection device then automatically and quickly and accurately segmented the defect and extracted and matched features, and provided the direction and shape of the edge of the defect; The defect images are stitched together to form an overall defect image of the structural surface at the bottom of the bridge; on this basis, the detection device combines the actual structural apparent defect damage to classify and statistic the structural apparent defect damage, and effectively judge in real time Quantitative and qualitative analysis of the apparent defect status of the structure is made; finally, the detection device is based on the classification standard of surface defec...

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Abstract

The invention relates to a bridge apparent state automatic detection device based on a charge coupled device (CCD) array photographic technique and a bridge apparent state automatic detection method based on a charge coupled device (CCD) array photographic technique. The bridge apparent state automatic detection device consists of a CCD video camera array, a scanning frame, an image acquisition card, a computer, detection management software and a detection vehicle and is characterized in that: the CCD video camera array is arranged on the scanning frame; the bottom of the scanning frame is fixed on the detection vehicle positioned on or below a bridge; the CCD video camera array is connected with the image acquisition card through leads; the image acquisition card is arranged on the computer; the CCD video camera array transmits synchronous bridge bottom and side defect images to the computer in real time; and the detection management software realizes synthesis, processing, defect identification and data management of the bridge apparent defect images. A computer video technique is applied to the bridge apparent defect detection and a judgment result is directly provided by a reliable CCD automatic data acquiring and process system, so that time is saved, working efficiency and precision are improved, and the normal operation state of the bridge can be guaranteed.

Description

technical field [0001] The invention relates to automatic detection technology, in particular to an automatic detection device and method for bridge apparent state based on CCD array camera technology. Background technique [0002] Transportation is the economic lifeline of a country. Roads and bridges are the carriers that make transportation unimpeded. Bridge structures play a vital role as a transportation hub. Many highway bridges in our country are located in mountainous areas or cross rivers. With the increase of service time, various fatigue and damages will inevitably occur in the bridge structure. Most of the bridge structure defects mainly occur at the bottom of the bridge. For large concrete bridges, bridge cracks are one of the main issues that need to be detected and evaluated. Most structural cracks occur at the bottom of the bridge, making detection particularly difficult. According to incomplete statistics, more than 90% of bridges damaged each year are caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88
Inventor 单宝华杨宇
Owner 单宝华
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