Sand grain diameter detection device and method based on fluid/solid interface wave

A sediment particle and detection device technology, which is applied in the direction of measuring device, particle and sedimentation analysis, particle size analysis, etc., can solve the problems of low precision, narrow measurement range, and long measurement time at one time

Inactive Publication Date: 2014-02-26
HOHAI UNIV CHANGZHOU
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Problems solved by technology

[0006] (4) Electromagnetic induction method: also known as the Coulter method, the particle size is measured according to the resistance change of the particles suspended in the electrolyte when they flow through the orifice. The lower limit of the instrument measurement is affected by the background noise, and the particle size cannot be too large. When the particle size is too large, it will settl

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  • Sand grain diameter detection device and method based on fluid/solid interface wave
  • Sand grain diameter detection device and method based on fluid/solid interface wave
  • Sand grain diameter detection device and method based on fluid/solid interface wave

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the accompanying drawings.

[0064] Such as figure 1 As shown, the sediment particle size detection device based on the fluid-solid interface wave is small in size, easy to carry, and easy to use. It is suitable for field river sediment particle size detection. It has a wide range of particle size detection and high reliability. The Scholte wave has a relatively large amplitude and is sensitive to the medium on both sides (when both sides are ideal fluid and elastic solid, Scholte is non-dispersive and non-attenuating, and when the medium on either side changes, the interface wave will produce dispersion and attenuation effects) characteristics, greatly improving the detection accuracy and range of breadth, specifically including

[0065] The intelligent control module is used to generate the pulse signal, and process the received Scholte wave and display after propagating along the fluid-solid i...

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Abstract

The invention discloses sand grain diameter detection device and method based on a fluid/solid interface wave. Ultrasonic detection is applied to the detection of river sand grain diameter, Scholte wave energy is mainly focused in a fluid near a fluid/solid interface, and has the characteristics of largest amplitude, small frequency dispersion and high detection precision, the detection device is characterized in that a singlechip intelligent control module generates a pulse signal, an excitation signal generating module transmits the pulse signal in multiple paths of Scholte waves, a receiving module receives the corresponding Scholte waves, the signal is transmitted to the singlechip intelligent control module for performing calculation to obtain a relation graph between a number of the Scholte waves and the grain diameter, and a defect in existing grain diameter detection is well made up; the detection device has the advantages of small size, convenience in use, wide detection range to the grain diameter and high reliability, is easy to carry, is suitable for detection of the field river sand grain diameter detection, and is beneficial to the actual popularization and use.

Description

technical field [0001] The invention relates to a sediment particle size detection device and method based on fluid-solid interface waves, and belongs to the technical field of ultrasonic detection and analysis. Background technique [0002] The problems caused by river sedimentation involve the life of the reservoir, the inundation of the reservoir area, the evolution of the waterway at the tail section of the reservoir, the evolution of the port area, the normal operation of the ship lock in the dam area, and the normal operation of the power station, as well as the erosion of the riverbed downstream of the hub, the lowering of the water level, and the evolution of the river channel. At present, there are mainly the following methods for detecting the particle size of sediment particles in rivers: [0003] (1) Screening method: select sieves of different sieve sizes, arrange the sieves from small to large from top to bottom, and then put the sample to be tested on the top ...

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Application Information

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IPC IPC(8): G01N15/02
Inventor 韩庆邦毛志斌谢祖锋徐杉朱昌平李建殷澄汤一彬
Owner HOHAI UNIV CHANGZHOU
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