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An automated test method for acoustic Doppler velocity profilers

A technology of acoustic Doppler and automatic testing, which is applied in fluid velocity measurement, testing/calibration of velocity/acceleration/shock measurement equipment, velocity/acceleration/shock measurement, etc., to achieve flexible test methods, high test accuracy, and small constraints Effect

Active Publication Date: 2019-11-19
INST OF ACOUSTICS CHINESE ACAD OF SCI
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Problems solved by technology

Therefore, the above test method is not suitable for the simulation test and performance analysis of the acoustic Doppler current profiler

Method used

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  • An automated test method for acoustic Doppler velocity profilers
  • An automated test method for acoustic Doppler velocity profilers
  • An automated test method for acoustic Doppler velocity profilers

Examples

Experimental program
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Embodiment 1

[0033] With the above-mentioned automated testing method, the specific implementation steps in this embodiment are:

[0034] Step 101: The detection system completes the initial parameter setting, so as to divide the radiation area of ​​the acoustic wave beam emitted by the acoustic Doppler current profiler into several frustum-conical scattering flow layer research units with different heights.

[0035] Such as figure 2 As shown, the opening angle of the acoustic beam emitted by the acoustic Doppler current profiler is The radiation area of ​​the acoustic beam forms a cone. The acoustic Doppler current profiler emits an acoustic beam that has no obvious boundaries in the process of propagating in the water body. For the convenience of research, we artificially divide a number of water layers with a fixed thickness in the direction of the beam, and the echo signal can be discretized. Superposition of scattered echoes for N water layer units

[0036] at a distance r from...

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Abstract

The invention provides an automatic testing method for an acoustic Doppler current profile. The automatic testing method comprises the steps of: step 1) splitting a radiation region of an acoustic wave beam emitted by means of the acoustic Doppler current profile into a plurality of cone scattering flow layer research units having different heights; step 2) emitting an acoustic wave beam by meansof the acoustic Doppler current profile, acquiring the acoustic wave beam in an acoustic coupling manner, and converting the acoustic wave beam into a modulated pulse signal; step 3) simulating and generating scattered echo signals corresponding to flow layers in the radiation region, and converting the scattered echo signals into acoustic pulses for emission; step 4) and utilizing the acoustic Doppler current profile to receive the acoustic pulses emitted in the step 3) in an acoustic coupling manner, calculating to obtain speed numerical values corresponding to the flow layers, comparing thespeed numerical values with a standard value, and further determining the working performance of the acoustic Doppler current profile. The automatic testing method provided by the invention realizesthe high-precision onshore automatic test of the acoustic Doppler current profile.

Description

technical field [0001] The invention relates to the technical field of acoustic Doppler velocity profiler testing, in particular to an automatic testing method for the acoustic Doppler velocity profiler. Background technique [0002] Acoustic Doppler Current Profile (Acoustic Doppler Current Profile, Doppler Velocity Profiler) is a method that uses acoustic transducers to emit acoustic pulses, and calculates the multiple An instrument for the measurement of flow velocity by the Puler frequency shift. Its outstanding feature is that it can measure the three-dimensional flow velocity and flow direction of different water layers without disturbing the flow field. [0003] With the wide application of Doppler current profiler in the field of hydrological monitoring and navigation, it has become a new research topic to test its overall function and performance. Therefore, it is of great significance to establish a test system for Doppler sonar's marine environment simulation in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/24G01P21/00
CPCG01P5/241G01P5/244G01P21/00
Inventor 马龙张向军邓锴吴建波杨靖
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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