Automatic measuring device and method for expansion and shrinkage changes of concrete blocks

Abstract

The invention discloses an automatic measuring device and a measuring method for expansion and shrinkage changes of a concrete block, the automatic measuring device for expansion and shrinkage changesof the concrete block comprises a sample test board and a laser assembly, and the laser assembly is also used for calculating the distance between the laser assembly and the concrete block; a high-definition camera assembly is used for shooting the length and the width of the concrete block; the laser assembly and the high-definition camera assembly are in communication connection with the central control computer assembly; the laser assembly is further used for generating a distance signal, and the central control computer assembly calculates the thickness of the concrete block according tothe distance signal; the high-definition camera assembly is used for generating a contour image signal, and the central control computer assembly calculates the expansion and shrinkage rate of the concrete block according to the contour image signal. According to the invention, the laser assembly is used for measuring the thickness of the concrete block, and the high-definition camera assembly isused for measuring the expansion and shrinkage rate of the concrete block, thereby greatly improving the detection precision and work efficiency of the concrete block.

Description

technical field [0001] The invention relates to the field of measurement of masonry materials, in particular to an automatic measurement device and method for measuring expansion and contraction changes of concrete blocks. Background technique [0002] Due to the different expansion coefficients of masonry materials, uneven shrinkage and different expansion and contraction of masonry materials are caused. Affected by temperature differences, masonry materials will also produce cracks. For concrete blocks, the mortar at the junction is not full or the tie bars are missing, which will lead to cracking of the concrete blocks. Structural cracks produced by concrete blocks will affect the structural strength, function and aesthetics of the main body of the building. Seriously, it will also damage the integrity and safety of the main structure of the building and reduce the service life of the building. At present, most of the traditional concrete block detection methods are mea...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automatic measurement device and method for measuring the expansion and contraction of concrete blocks in order to overcome the above-mentioned defects of low efficiency of manual measurement of concrete blocks in the prior art

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