Calibration device for road section flaw detection and structural layer thickness ground penetrating radar

Abstract

The invention provides a calibration device for a road section flaw detection and structural layer thickness ground penetrating radar. The device is technically characterized in that a bracket is horizontally placed on the ground through ground legs; a bottom pad is placed on the ground at the middle of the bracket; a metal plate is horizontally placed on the bottom pad; a thickness sample is horizontally placed on the metal plate in an overlapped manner, and a height adjusting knob and a height adjusting frame are fixed on a cross beam of the bracket; an antenna suspension beam is fixed on alower cross beam of the height adjusting frame, and the ground penetrating radar antenna is fixed on the antenna suspension beam, wherein the height is adjusted according to different sizes of the ground penetrating radar antenna and the thickness sample group. The device has the advantages that the device is simple in structure, stable in chemical and physical properties, good in uniformity, stable in dielectric constant, convenient to store and not prone to deformation of the thickness sample set, and can cover all thicknesses required by ground penetrating radar calibration. The height adjusting function meets the calibration requirements of different types of ground penetrating radars, the operation is simple and convenient, and a reliable basis is provided for data evaluation of the ground penetrating radars.

Description

technical field [0001] The invention relates to a ground-penetrating radar calibration device for road section flaw detection and structural layer thickness. Background technique [0002] In the transportation industry, the thickness of the pavement is one of the most important indicators for the quality control of pavement engineering in road construction and completion acceptance inspection. In the past, the conventional detection methods for the pavement thickness of high-grade highways (sand filling method, ring knife method, drilling coring method, etc.) were mainly drilling and coring methods. This method is not only inefficient, poor in representativeness, but also causes damage to the road . Highway section flaw detection and structural layer thickness ground penetrating radar (hereinafter referred to as ground penetrating radar) has the characteristics of no damage, high efficiency, high resolution, and strong anti-interference ability. voids, cracks, etc.) are wi...

AI Technical Summary

Problems solved by technology

[0004] With the increase of equipment use time, the equipment has problems such as poor interface contact, intermittent, blurred images, etc., and the accuracy and reliability of the measurement data cannot be guaranteed.

However, there is no ground penetrating radar calibration device established in the industry, and the traceability of the value of the equipment cannot be realized

However, the actual pavement thickness detection is performed by the equipment without measurement, the accuracy of the detection results cannot be guaranteed, and the project quality cannot be effectively evaluated.

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