Electric conduction-type internal wave measurement system

Abstract

The invention relates to an electric conduction-type internal wave measurement system, which is characterized in that: the system comprises a micro conductive sensor array for detecting the change of electric conductivity in a flow field, an output end of the micro conductive sensor array is sequentially connected with a range switcher, an amplifier, an electric conductivity / density converter, an analog / digital converter, a computer and an internal wave waveform real-time display window; the range switcher automatically adjusts the gain of the amplifier according to an electric conductivity signal of the micro conductive sensor array; the electric conductivity / density converter converts the electric conductivity signal of liquid to a density signal which is then further converted, by the analog / digital converter, into a digital signal for being input into the computer, and the digital signal is analyzed and processed by internal wave signal real-time processing software in the computer to obtain integral real-time internal wave waveform, in the end, the internal wave waveform is input to an internal wave waveform real-time display window for being displayed. The system has the advantages of long recording time, high resolution, good synchronism, high reliability and the like, and is suitable for the real-time measurement and analysis of internal waves at different density layers in a variety of density stratification water tanks.

Description

technical field [0001] The invention relates to a measurement system, in particular to a conductance type internal wave measurement system capable of performing real-time on-line measurement and analysis of high-resolution internal waves in space and time. Background technique [0002] In the actual ocean, the temperature, salinity and density of seawater change with space and time, which will generate ocean internal waves that affect the safe operation of underwater vehicles and marine engineering structures. Stratified flow test tank is the main equipment for studying the characteristics of ocean internal waves, and the simulation and measurement of internal wave waveforms are the main technical conditions for experimental research. For the internal wave test of density stratified flow flume widely used at present, obtaining the internal wave information synchronized with the load and motion of the marine structure model is one of the key technologies to realize the test. ...

AI Technical Summary

Problems solved by technology

However, due to limited samples, it is difficult for the schlieren method to obtain the complete process from generation to disappearance of internal waves, and there are problems such as short recording time and heavy post-processing workload. Moreover, this method is an offline measurement method and cannot be measured synchronously with other physical quantities; The temperature law is limited to the use of temperature stratified water tanks, and has problems such as low resolution and signal lag

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