A Reinforced Concrete Detection Device Based on Electromagnetic Induction

Abstract

It relates to a reinforced concrete detection device based on electromagnetic induction, including an average signal transmitting and receiving coil board, a difference signal transmitting coil board, a difference signal receiving coil board, a transmitting drive board, a shielding board, a control detection circuit board, a fixing column and a code There are six groups of third PCB coils distributed in three rows and two columns, three groups of second PCB coils and a group of first PCB coils on the mean value signal transmitting and receiving coil board, and each group of second PCB coils surrounds two of the same row. A group of third PCB coils, the first PCB coil surrounds three groups of second PCB coils; two sets of fourth PCB coils are arranged on the difference signal transmitting coil board, which are respectively located on the left and right sides of the difference signal transmitting coil board; The receiving coil plate is perpendicular to the differential signal transmitting coil plate, and three sets of fifth PCB coils are arranged on the differential signal receiving coil plate. The invention can solve the problem of low ability to distinguish dense steel bars in the prior art, and at the same time increases the detection depth and improves the measurement accuracy of the protective layer thickness.

Description

technical field [0001] The invention relates to the field of building detection, in particular to a reinforced concrete detection device based on electromagnetic induction. Background technique [0002] Since the strength of concrete has the characteristics of high compressive strength and low tensile strength, while the strength of steel bars has the characteristics of high tensile strength and low compressive strength, the reinforced concrete structure combined with the two can obtain good compressive and tensile strength. At present, it is also a kind of building structure widely used in buildings, bridges, tunnels and other buildings. [0003] The reinforcement ratio and the thickness of the reinforcement cover in the reinforced concrete structure are different, and the ability of the reinforcement to withstand the tensile stress in the specific structure is also correspondingly different. When the thickness is too large, the crack control performance of the protective ...

AI Technical Summary

Problems solved by technology

However, due to the relatively simple design of the sensor structure in the prior art, when the steel bar spacing is small, the thicker the protective layer is, the more obvious the induced magnetic fields between the steel bars are superimposed on each other, and the mutual influence leads to low measurement accuracy.

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