An Ultrasonic Hydraulic Measurement Method and System for Improving the Influence of Multiple Factors

A technology of measurement system and measurement method, which is applied in the direction of fluid pressure measurement using acoustic methods, can solve the problems of measurement difficulty, ultrasonic echo overlap, ultrasonic probe installation deviation, etc., achieve good measurement accuracy, wide application range, and improve pipe quality. diameter effect

Active Publication Date: 2018-04-17
XI AN JIAOTONG UNIV
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Problems solved by technology

Ultrasound has a fast propagation speed. When the pipe diameter is small, as the ultrasonic propagation distance decreases, the ultrasonic echo is easy to overlap with the initial wave, resulting in the failure of normal measurement.
[0009] 3. The installation deviation of the ultrasonic probe
Temperature will affect the propagation characteristics of ultrasonic waves in liquids, and the speed of ultrasonic waves will change significantly, which will make the measurement more difficult

Method used

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  • An Ultrasonic Hydraulic Measurement Method and System for Improving the Influence of Multiple Factors
  • An Ultrasonic Hydraulic Measurement Method and System for Improving the Influence of Multiple Factors
  • An Ultrasonic Hydraulic Measurement Method and System for Improving the Influence of Multiple Factors

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Embodiment Construction

[0044] In order to understand the present invention more clearly, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] Such as figure 1 As shown, the present invention improves an ultrasonic hydraulic measurement system influenced by multiple factors, including an ultrasonic transmitting probe TRA, an ultrasonic receiving probe TRB, a platinum resistor, a processing module, an ultrasonic transmitting module, an ultrasonic echo processing module, a time measurement module and a temperature measurement module. module; wherein, the ultrasonic transmitting probe TRA, the ultrasonic receiving probe TRB and the platinum resistor are all arranged on the wall of the hydraulic pipe to be tested, and the processing module controls the ultrasonic transmitting module to apply high-voltage pulses to the ultrasonic transmitting probe TRA to generate ultrasonic waves, and the ultrasonic waves pass through th...

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Abstract

The invention discloses an ultrasonic hydraulic measurement method and a system thereof which can improve the influence of multiple factors. The hydraulic measurement system obtains the liquid pressure value by measuring the propagation time difference of the ultrasonic wave in the oil before and after the hydraulic oil is under pressure. The influence of the hydraulic measurement system on the measurement of pipe diameter, installation deviation and temperature is improved by using a shear wave oblique incidence probe, an automatic gain control circuit, and a BP neural network with real-time temperature compensation. The hydraulic measurement system includes a processing module, an ultrasonic emission module, an ultrasonic echo processing module, a time measurement module and a temperature measurement module. The hydraulic measurement method needs to complete the steps of controlling ultrasonic emission, ultrasonic echo processing, automatic gain adjustment, time measurement, temperature measurement, and data processing based on BP neural network. The invention improves the influence of various factors on hydraulic measurement, has high reliability, wide application range and good measurement accuracy.

Description

Technical field: [0001] The invention belongs to the technical field of liquid pressure measurement, and relates to a non-interventional liquid pressure measurement method based on ultrasonic technology, in particular to an ultrasonic hydraulic measurement method and a system thereof which can improve the influence of multiple factors. Background technique: [0002] With the application of hydraulic systems more and more widely, the real-time monitoring of its operating status has received more and more attention. Fluid pressure is one of the basic parameters reflecting the operating state and changing law of the hydraulic system. The measurement of the pressure value is the basic requirement for the state monitoring and fault diagnosis of the hydraulic system. [0003] Although the traditional hydraulic measurement methods are in various forms, they are all interventional. The measurement is completed by drilling holes in the pipeline to be tested and installing pressure ga...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L11/04
Inventor 宋政湘李雪武渊曹羽鹏焦源
Owner XI AN JIAOTONG UNIV
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