Detection method and system for super high-rise concrete pump pipe based on thermal imaging recognition

Abstract

The invention discloses a detection method and system for a super high-rise concrete pump pipe based on thermal imaging recognition, and aims to solve the problems that an existing detection method cannot pre-judge and give an alarm in advance, and the detection difficulty is increased. The method comprises the following steps: obtaining a thermal imaging video of a concrete pumping pipeline, extracting multiple frames of thermal imaging images in the thermal imaging video according to a set frequency, converting the multiple frames of thermal imaging images into grayscale images and performing noise reduction, and performing low-frequency region grayscale value change trend analysis and grayscale change frequency approximation degree analysis on the denoised grayscale images respectively;and when the gray value change trend of the low-frequency region is positively increased and the gray change frequency similarity degree percentage exceeds a set threshold value, judging that the pumping pipeline has a local deposition phenomenon. The detection system comprises thermal imaging equipment, a control center and an alarm device which are in signal connection in sequence, wherein thecontrol center comprises an image conversion unit, an image comparison and conversion unit, an image recognition unit and a control unit which are in signal connection in sequence.

Description

technical field [0001] The invention relates to the technical field of concrete pumping for super high-rise buildings, in particular to a detection method and system for super high-rise concrete pump pipes based on thermal imaging recognition. Background technique [0002] High-strength and high-performance concrete is often used in the construction of super high-rise buildings. The flow rate of concrete in the higher pumping pipeline is about 0.3m / s. Due to insufficient pumping pressure and high viscosity of concrete, local deposition of concrete is easy to occur, resulting in The pumping pipeline was blocked, seriously affecting the construction progress and construction safety. [0003] At present, there is still a lack of real-time safety detection means for the pumping pipeline during the concrete pumping operation. When the concrete deposits locally in the pumping pipeline, only when the pump pressure and the flow rate ratio change significantly. Using the pressure se...

AI Technical Summary

Problems solved by technology

[0004] The existing detection method is to use the pressure sensing method to determine the location of local concrete deposition in the pumping pipeline when the pump pressure and flow rate ratio change significantly, which cannot be predicted and alarmed in advance, and increases the difficulty of detection The purpose of this invention is to provide a detection method and system for super high-rise concrete pump pipes based on thermal imaging recognition, which can perform real-time, safe and intelligent detection and early warning of the local deposition position of concrete in the pump pipe

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