Method of controlling percussion drill to verify internal defects of concrete based on acoustic signal

Abstract

The invention provides a method for controlling the drilling of a percussion drill to verify the internal defects of concrete based on the acoustic wave signal, comprising the following steps: setting multiple acoustic signal thresholds according to the difference in the sound characteristics of the percussion drill drilled into different media, and pre-stored in the server; starting Impact drill; call the pre-stored acoustic signal threshold in the server, compare the collected acoustic signal with the pre-stored acoustic signal threshold, and determine the collected acoustic signal type; control the working status of the impact drill according to the acoustic signal type determined by the comparison result . Intelligently control the work of the percussion drill according to the difference of the voiceprint threshold, continue drilling when encountering concrete and corrugated pipe skin, and stop when encountering steel bars, steel beams, and air; realize the judgment of the drilling position whether there is a cavity defect; Or adjust the working state of the percussion drill according to the drilling position to reduce the damage caused by the percussion drill to the steel bars and steel bundles occurring in the drilling position.

Description

technical field [0001] The invention relates to the technical field of concrete internal defect detection, in particular to a method for controlling an impact drill to verify the internal defect of concrete based on an acoustic signal. Background technique [0002] Percussion drills are widely used in the field of civil engineering. For example, the internal defects of concrete and the verification of the fullness of prestressed pipe grouting require endoscopic inspection after drilling, and micro-damage verification of non-destructive testing results. [0003] Before drilling, the positioning is generally carried out to determine the position of the steel bar / prestressed pipe, etc., and then drill the target position to observe the situation in the drilled hole; however, there will be positioning errors in the steel bar / prestressed pipe. In order to avoid the drill bit on the steel bar / The destruction of the prestressed steel beam requires the drilling workers to rely on e...

AI Technical Summary

Problems solved by technology

[0003] Before drilling, the positioning is generally carried out to determine the position of the steel bar / prestressed pipe, etc., and then drill the target position to observe the situation in the drilled hole; however, there will be positioning errors in the steel bar / prestressed pipe, in order to avoid the drill bit on the steel bar / The damage of the prestressed steel beam requires the drilling workers to rely on experience to judge the change of the drilling medium

[0004] However, once the manual judgment process is delayed or misjudged, it will cause personal injury caused by the rebound of the impact drill; or the drill bit will be discovered by the worker after it has touched the steel bar / prestressed pipe. At this time, the drill bit has caused damage to the steel bar / prestressed pipe Corruption, so there is a lack of a way to reduce the above problems

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