Automatic sampling device of acoustic Doppler velocimeter and sampling method thereof

Abstract

The invention discloses an automatic sampling device of an acoustic Doppler velocimeter and a sampling method thereof. According to the sampling device, firstly a three-dimensional coordinate system is established above a water tank by arranging an X-direction guide rail, a Y-direction guide rail and a Z-direction guide rail, then a moving track of an ADV fixing device is established through an X-direction pulley, a Y-direction pulley and a Z-direction automatic spiral elevator separately, finally the automatic collection process of ADV probes on velocity data in the water tank by using a driving device and auxiliary electrical equipment is completed, and finally the collected data is transmitted to a computer terminal. The sampling method comprises the steps that the three-dimensional coordinate system established above the water tank is mainly adopted to obtain the sampling position of the probes, then different sampling points are sampled through computer instructions, and the collected data is transmitted back to the computer. A computer is used for controlling the acoustic Doppler velocimeter and a three-dimensional control device thereof to realize automatic, remote and accurate sampling.

Description

technical field [0001] The invention belongs to an automatic sampling device for fluids, in particular to an automatic sampling device for an acoustic Doppler flow velocity meter and a sampling method thereof. Background technique [0002] Flow velocity is an important factor in fluid mechanics. The Acoustic Doppler Velocimeter (ADV) is a high-precision three-dimensional point-type flow meter. Based on the principle of optical Doppler measurement, the accuracy of the measurement data is high, and the instrument itself produces zero drift. It has a wide range of applications and can be used for laboratory measurements, oceanographic mapping, etc. [0003] In fluid mechanics experiments, it is often necessary to measure the flow velocity of multiple positions and sections in the tank, and the flow velocity of different measuring points of each section, so it is particularly important to control the acoustic Doppler flow meter ADV. However, there is no unified ADV three-dimens...

AI Technical Summary

Problems solved by technology

However, there is no unified ADV three-dimensional control device for the acoustic Doppler flow meter on the market, and it is generally fixed manually, which will affect the correlation and signal-to-noise ratio of the test, and the accuracy of the position is not high. It is impossible to accurately measure the flow velocity of each section and each measuring point, and it is very time-consuming

None of the existing products or devices for the solutions to these problems and the sampling methods for reducing measurement errors have played a very good role

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