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Method for monitoring complex crack change state based on two-dimensional code positioning technology

A positioning technology and changing state technology, which is applied in the field of monitoring the changing state of complex cracks based on two-dimensional code positioning technology, can solve problems such as poor recognition effect, difficult measurement, single crack, etc., and achieve convenient and timely monitoring process and accurate monitoring results , the effect of a wide range of application scenarios

Pending Publication Date: 2021-12-03
宁波市水库管理中心 +2
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Problems solved by technology

[0002] Cracks can reflect the safety status of a building structure, so when there are cracks in a building structure, knowing the development of cracks in time can avoid some safety accidents. The algorithm can measure the parameters of cracks more accurately, but the existing methods all involve relatively single cracks, and the existing methods do not take into account cracks in complex situations, such as a crack with multiple branches or a single crack It is difficult to measure through the entire wall. Therefore, a new measurement method is needed to meet the monitoring of single cracks and complex cracks at the same time; the current existing methods can only monitor some shorter cracks or single cracks. These methods In the case of complex cracks, the identification effect is not good

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  • Method for monitoring complex crack change state based on two-dimensional code positioning technology

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] A method for monitoring the changing state of complex fractures based on two-dimensional code positioning technology, comprising the following steps:

[0018] Step 1): Select a crack with multiple branched crack lines as the crack to be monitored, and make multiple QR codes with the same size and marking points 1;

[0019] Step 2): Starting from the top of one end of the crack to be monitored, post a two-dimensional code logo 1 on both sides of the crack to be monitored at the set center point distance and the set center point connection angle respectively as a group of identification units, Then post multiple groups of identification units in sequence along the direction of the crack and at a set arrangement distance, the connection line of the center points of the four two-dimensional code identification 1 in any two groups of identif...

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Abstract

The invention discloses a method for monitoring the complex crack change state based on a two-dimensional code positioning technology. The method is characterized by including pasting two-dimensional code identifiers on the two sides of the complex crack, and using a camera for shooting a complex crack image containing the two-dimensional code identifiers; obtaining pixel points occupied by the crack image in each crack monitoring area through an image processing and deep learning method; comparing the images shot twice to obtain a changed crack monitoring area; and finally, combining to monitor the overall change condition of the complex crack. The invention has the advantages that the monitoring process is convenient and timely, the monitoring result is accurate, and the changed monitored area can be marked with colors or marks so as to be displayed more visually, so that the development condition of cracks can be analyzed quickly, and early warning can be made in time; the method not only can monitor simple cracks, but also can monitor complex cracks, is wide in application scene, and is also suitable for monitoring cracks of dams, reservoirs and walls.

Description

technical field [0001] The invention relates to a method for monitoring the changing state of cracks in building structures, in particular to a method for monitoring the changing state of complex cracks based on two-dimensional code positioning technology. Background technique [0002] Cracks can reflect the safety status of a building structure, so when cracks appear on a building structure, knowing the development of cracks in time can avoid some safety accidents. The algorithm can measure the parameters of cracks more accurately, but the existing methods all involve relatively single cracks, and the existing methods do not take into account cracks in complex situations, such as a crack with multiple branches or a single crack It is difficult to measure through the entire wall. Therefore, a new measurement method is required to meet the monitoring of single cracks and complex cracks at the same time; the current existing methods can only monitor some shorter cracks or sing...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06K7/14G06N3/04G06N3/08
CPCG06T7/0002G06K7/1417G06K7/1443G06N3/08G06N3/045
Inventor 蔡天德王舒林谢东辉李登华房淑莹陈丹丹崔宇南
Owner 宁波市水库管理中心
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