Automatic ultrasonic detection system of non-contact solid geologic model

Abstract

The invention provides an automatic ultrasonic detection system of a non-contact solid geologic model and belongs to the field of ultrasonic vibrating detection. The automatic ultrasonic detection system comprises an emitting device, a receiving device, a high-speed analog-to-digital converter and a three-dimensional coordinatograph platform. A detected geologic model, the emitting device and the receiving device are all arranged on the three-dimensional coordinatograph platform. The high-speed analog-to-digital converter processes signals collected by the receiving device and then transmits the signals to a computer. The emitting device comprises a high-voltage pulse generator and a non-contact focusing probe. The automatic ultrasonic detection system solves the problem of various normal geologic model simulation systems, can perform large-scale multipoint non-contact ultrasonic detection for complex surface models and meets special requirements of modern geophysical prospecting fine simulation.

Description

technical field [0001] The invention belongs to the field of ultrasonic vibration detection, in particular to a non-contact solid geological model ultrasonic automatic detection system. Background technique [0002] Earthquake physical simulation research refers to the use of physical models to study earthquakes and related phenomena (especially fluctuation phenomena). It is an important part of experimental geology, also known as model geology. The most commonly used method in model geology studies is the ultrasonic method, and is therefore often referred to as ultrasonic seismic modeling. Ultrasonic seismic physical model experiments conduct indoor simulation observations of the propagation of seismic waves in various complex geological bodies through the observation of ultrasonic propagation in geological models, and conduct seismological research based on the observation results. It explains and solves many practical problems in geophysical exploration, thus greatly pro...

AI Technical Summary

Problems solved by technology

[0011] Existing ultrasonic detection methods have certain shortcomings and limitations when used for geological model detection

[0012] ① Piezoelectric ultrasonic probes are relatively simple and low in price, but when performing geological model testing, there will be some problems when using piezoelectric probes for transmission and reception

The damage of this point will affect the next excitation effect at this point

When performing physical model detection, it is required to emit ultrasonic signals multiple times at the same emission point (we call it the shot point), which means that the point is irradiated by the intense pulsed laser source multiple times, and each irradiation is required The state of the previous point will not change, that is, the repeatability is good, but it is difficult to achieve this with an intense pulsed laser source

If the emission energy is reduced, the generated ultrasonic emission energy is not enough, and the signal cannot reach the deep layer of the model

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