Structural defect detection device and method based on impact imaging method and acoustic wave method

Abstract

The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a structural defect detection device and a structural defect detection method based on animpact imaging method and an acoustic wave method. The structural defect detection device comprises an excitation unit, a receiving unit and a main machine unit, wherein modules of the excitation unit, the receiving unit and the main machine unit are communicated with one another through communication cables; the excitation unit comprises a beating rod and a hammer head; the beating rod is fixedly mounted inside a supporting rod; the receiving unit consists of three-point vibration sensors in three-point arrangement and an audio receiver fixed to the supporting rod; the three-point vibrationsensors are connected through shock-insulating plastic connecting pipes; the vibration sensors of the receiving unit are connected with the audio receiver through data lines inside connecting rods; apower cord is connected with the main machine unit, so that data signals and instructions given by the main machine unit are normally transmitted; the structural defect detection device consists of the main machine unit, the receiving unit and the excitation unit, altogether four parts. The structural defect detection device is easy and convenient to operate and high in degree of integration, achieves visual comparison of two detection results, and is relatively convenient.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a structural defect detection device and method based on the shock imaging method and the acoustic wave method. Background technique [0002] For a long time, my country's economic and social development has paid too much for water resources and the water environment, which has led to problems such as water shortages, serious water pollution, and water ecological degradation in some places. Promoted the rapid development of water pipeline construction projects. Due to the large scale and fast progress of the project construction, and the application of a large number of new technologies, new processes and new methods in the project construction, it is inevitable that there will be hidden dangers after the project is completed. Large-diameter water delivery pipelines in water delivery projects, including PCCP pipelines and prestressed concrete...

AI Technical Summary

Problems solved by technology

For long-distance and long-term cruising applications, such as routine inspection of dams, disaster area investigation, etc., the infrastructure in the cruising area is not complete or has been damaged, and it is impossible to provide a charging platform and power for the cruising drone

Therefore, the lack of continuous cruising capability is one of the constraints restricting the popularization and application of UAVs, and it is a huge shortcoming in its use in the civilian industry.

The existing UAV charging technology has the following defects: 1. The positioning device, at this stage, uses laser alignment technology, electromagnetic interaction correction technology, etc. to correct the error of GPS positioning and realize the high-precision autonomous landing of the UAV.

However, such devices are usually complex in structure and high in cost, and it is difficult to strike a balance between high precision and cost

At the same time, for cruise areas such as dams and disaster-stricken areas, the natural environmental conditions in the area are harsh, and they are often disturbed by environmental factors such as strong winds and rainfall, and there are major problems in positioning stability and reliability. Auxiliary precise landing, the role of fixed UAV, and low cost

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