Ultrasonic underwater target thickness measuring system and thickness measuring method

Abstract

The invention discloses an ultrasonic underwater target thickness measuring system and thickness measuring method. The system comprises an ultrasonic emitting circuit, an ultrasonic transducer, an ultrasonic reception and conditioning circuit, an ADC module, a man-machine interaction module and a control processor. The control processor sends a trigger signal to the ultrasonic emitting circuit; the ultrasonic emitting circuit outputs an excitation signal to drive the ultrasonic transducer in the water to generate high-frequency pulse signals; the ultrasonic transducer in the water receives pulse echoes returned by the upper and lower two surfaces of a target object in the water, and then, sends the pulse echoes to the ultrasonic reception and conditioning circuit; the signals are subjected to amplification, filtering and analog-digital conversion, and then, are sent to the control processor; and the control processor calculates the thickness of the measured object in the water through a formula, and sends the result to the man-machine interaction module for display. A waterproof water immersion focusing transmit-receive ultrasonic thickness measurement probe is adopted in the system; and the probe plays the functions of emitting and receiving the ultrasonic simultaneously, has a larger distance measurement angle, can finish underwater target thickness detection, and can be widely applied to popularization of fishery and undersea industrial fields.

Description

technical field [0001] The invention relates to an ultrasonic thickness measurement technology, in particular to an ultrasonic underwater target thickness measurement system and thickness measurement method. Background technique [0002] Ultrasonic testing is an important means in the field of non-destructive testing. The internal defects and thickness of the object under test can be obtained from the position and waveform of the ultrasonic reflected wave. At present, ultrasonic non-destructive testing is widely used in fields such as fishery, navigation and underwater industry. [0003] In the field of fishery: Traditionally, fishermen judge which area is the place where fish schools often appear based on personal experience. This method is obviously inefficient and has many uncertainties. Using ultrasonic detection technology, the position and density of fish and the depth of seawater can be determined according to the time and velocity of ultrasonic reflected waves, whic...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that various ultrasonic thickness gauges do not have the ability to detect the thickness of underwater targets, and proposes an ultrasonic underwater target thickness measurement system and thickness measurement method, which can accurately measure the thickness of underwater targets with high measurement accuracy , and display the measurement results in real time for easy analysis

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