Linear frequency modulation anchor rod detection receiving and sending integral sensor and anchor rod detection method

Abstract

The invention relates to a linear frequency modulation anchor rod detection receiving and sending integral sensor, which comprises a sensor casing, an acceleration signal receiver and a plurality of piezoelectric ceramic emitting arrays, wherein the piezoelectric ceramic emitting arrays are uniformly arranged on the bottom surface of the sensor casing in the circumferential direction; the acceleration signal receiver is arranged in the axis center of the bottom surface of the sensor casing; the sensor casing is used for being installed on the excitation surface of the exposed end part of the tested anchor rod; the signal input ends of the plurality of piezoelectric ceramic emitting arrays are used for accessing chirp signals; the signal output end of the acceleration signal receiver is thesignal output end of the linear frequency modulation anchor rod detection receiving and sending integral sensor. The linear frequency modulation anchor rod detection receiving and sending integral sensor has the advantages that the emitting frequency band is wide; the energy is great; the penetration power is high; the attenuation is small; the self relevance is good; the action distance is great; the detection is easy; the size is small and the control is easy.

Description

technical field [0001] The invention relates to the technical field of engineering geophysical prospecting, in particular to a linear frequency modulation bolt detecting and transmitting integrated sensor and a bolt detecting method. Background technique [0002] At present, acoustic wave detection technology is the main detection method for non-destructive detection of bolt anchorage quality. The main basis of the stress acoustic wave reflection method for bolt detection is the kinematics and dynamics characteristics of wave propagation in the bolt. Although this method is widely used, its detection results are often closely related to the operating experience of the testing personnel. To a particularly high accuracy rate, the detection accuracy is difficult to grasp, so it is difficult to meet the requirements of actual engineering. Contents of the invention [0003] The object of the present invention is to solve the problems existing in the prior art, and propose a li...

AI Technical Summary

Problems solved by technology

The main basis of the stress acoustic wave reflection method for bolt detection is the kinematics and dynamics characteristics of wave propagation in the bolt. Although this method is widely used, its detection results are often closely related to the operating experience of the testing personnel. To a particularly high accuracy rate, the detection accuracy is difficult to grasp, so it is difficult to meet the requirements of actual engineering

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