Ultrasonic focused river sediment concentration on-line measurement method

A measurement method, focused technology, applied in the field of ultrasonic liquid-solid two-phase flow measurement, sediment concentration, signal processing, can solve the problem of unknown application effect, and achieve the effect of reducing scattering attenuation
CN106769734AActive Publication Date: 2017-05-31CHINA JILIANG UNIV
4 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA JILIANG UNIV
Publication Date
2017-05-31

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an ultrasonic focused river sediment concentration on-line measurement method which comprises the following steps: setting up a set of ultrasonic focused river sediment concentration on-line measurement devices taking a focused ultrasonic probe as a core; debugging a measurement system before measuring and starting the measurement devices for measuring; performing a symbolic dynamic filter analysis on acquired signals, so as to obtain parameter concentration measure related to river sediment concentration; establishing a relationship diagram between the concentration measure and the river sediment concentration, so as to obtain a measurement model. According to the measurement method disclosed by the invention, the ultrasonic scattering attenuation in the measurement process can be effectively reduced, the sensitivity and the accuracy of the measurement system are improved, the defects of low sensitivity and big error with a part of scope caused by calculation of an attenuation average are improved, and the measurement method can be widely applied to measurement of concentration of suspended sediment in multi-river regions.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical fields of ultrasonic liquid-solid two-phase flow measurement, signal processing and sediment concentration, in particular to an ultrasonic focused online method for measuring river sediment concentration. Background technique

[0002] In recent years, the problem of water resources in my country has become increasingly prominent. Whether it is the scarcity of water resources or the problem of pollution, it is necessary to accurately monitor the concentration of particulate matter in water. The content and characteristics of water suspended matter are one of the important parameters to characterize water quality, and are closely related to riverbank vegetation, water conservancy projects, water conservancy machinery, shipping channels, marine ecology, hydrometrics, water body protection, and disaster prevention and mitigation. Its effective measurement has Significance.

[0003] At present, the traditional method ...

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
Login to View More