Wall hollowing detection method and device based on acoustic method

Abstract

The invention relates to a wall hollowing detection device and a wall hollowing detection method based on an acoustic method. The wall hollowing detection method comprises the following steps: step 1, controlling an intelligent trolley to move to a designated place; step 2, setting a hollowing detecting point scope with a program, determining the detection position in the horizontal direction by controlling the displacement in the horizontal direction of the trolley and the position of a hollowing hammer in the Y-direction slide wail, and determining the detecting point scope in the vertical direction by controlling the height of a flexible platform and the rotary speed of the hollowing hammer in the Z-direction slide rail; step 3, detecting whether the hollowing hammer is in contact with the wall, and if so, sending out a radio-frequency pulse signal from the inside of the hollowing hammer, wherein a reflecting signal enters a sound pickup; marking in a hollowing area with a marking module when the detected sound signal features are greater than the threshold of the hollowing sound signal. According to the invention, with a circumferential-shaped hammer, whether the wall has hollowing is detected by periodical covering type knocking, thus being more mechanized and more accurate, and reaching an accurate effect with scientific analysis.

Description

technical field [0001] The invention relates to a device and method for detecting wall hollowing during house inspection by house inspectors or ordinary residents, in particular to a device and method for detecting wall hollowing based on an acoustic method. Background technique [0002] Empty drums are caused by the presence of air in the original masonry and powder ash layer. Traditional wall hollowing detection uses a hollowing hammer or a hard object to lightly tap the measured wall surface to make a thumping sound. The hollowing of a house generally refers to the hollowing of a house. Hollowing occurs between walls, floors, structural layers, and ceiling decoration layers due to failure to handle as required or grass-roots garbage is not cleaned, due to poor adhesion. If it is not dealt with in time before or during the decoration, it will cause large-scale cracks on the wall in the long run, arching of the wall, floor or floor tiles, and the peeling off of the ceiling ...

AI Technical Summary

Problems solved by technology

If it is not dealt with in time before or during the decoration, it will cause large-scale cracks on the wall in the long run, arching of the wall, floor or floor tiles, and the peeling off of the ceiling plastering layer will seriously affect the use of the user's house

[0003] The structure of the traditional technology to detect the ground or wall is a hand-held rod. One end of the hand-held rod is equipped with a hammer or a hard object, and the other end is a hand-held end. By tapping the measured surface to get different audio to judge whether it is an empty drum, This kind of equipment structure is simple and easy to use. The disadvantages are poor measurement accuracy, limited measurement range, low operation efficiency and mainly based on the subjective experience of the operator.

It is not suitable for occasions with a large measurement space and high requirements for house inspection; in some noisy environments, it is more likely to cause misjudgment when the measured point is far away from the operator, greatly reducing the accuracy of house inspection, and causing serious harm due to unqualified projects

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