Sediment particle size detection device and method based on fluid-solid interface wave

A sediment particle and detection method technology, applied in the direction of measuring device, particle and settlement analysis, particle size analysis, etc., can solve the problems of high lower limit, lack of accuracy, and inability to detect online
CN103604728BInactive Publication Date: 2016-01-20HOHAI UNIV CHANGZHOU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HOHAI UNIV CHANGZHOU
Publication Date
2016-01-20
Estimated Expiration
Not applicable · inactive patent

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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.
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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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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