High-pressure liquid flow measuring device based on bluff body streaming phenomenon and control method thereof

A flow measurement device, high-pressure liquid technology, applied in liquid/fluid solid measurement, measurement device, flow control using electrical devices, etc. Accuracy, the effect of high measurement accuracy

Active Publication Date: 2017-01-04
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned defects in the prior art, and propose a high-pressure liquid flow measurement device and c

Method used

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  • High-pressure liquid flow measuring device based on bluff body streaming phenomenon and control method thereof
  • High-pressure liquid flow measuring device based on bluff body streaming phenomenon and control method thereof
  • High-pressure liquid flow measuring device based on bluff body streaming phenomenon and control method thereof

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing and embodiment, invention is described in further detail:

[0042] refer to figure 1 , a high-pressure liquid flow measurement device based on the phenomenon of flow around a blunt body, including a vortex flow probe, a signal processing circuit module, a motor drive circuit module, a limit circuit module, an MCU main control circuit module and a communication module, wherein:

[0043] For the vortex flow probe, select the GLWT1 vortex flow probe without a flange, whose output signal is the charge signal, and fix it on the back side of the blunt body of the measuring device to collect the liquid generated on the back side of the blunt body after the liquid flows around the blunt body. Vortex signal.

[0044] The signal processing circuit module uses TLC27L4CN four-stage operational amplifier. The first stage is designed as a charge amplifier composed of capacitive impedance. Its function is to amplify the weak charge signa...

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Abstract

The invention provides a high-pressure liquid flow measuring device based on a bluff body streaming phenomenon and a control method thereof, so as to solve the technical problems of low industrial control quality and narrow measurement range existing in an existing vortex street flowmeter. The measuring device comprises a vortex street flow probe, a signal processing circuit module, a motor driving circuit module, a limit circuit module, an MCU (Microprogrammed Control Unit) main control circuit module and a communication module, wherein the signal processing circuit module is used for converting a charge signal output by the vortex street flow probe into a square signal; the MCU main control circuit module is used for performing cubic spline interpolation calibration, then converting a square signal into instantaneous flow, calculating the accumulated flow, setting an address number for the communication module so as to communicate with an external upper computer, further comparing the rated flow sent back by the communication module with the instantaneous flow, and finally sending the comparative result to the motor driving circuit module; further, in combination with the input of the limit circuit module, a closed loop feedback method is adopted, and remote detection of the measuring device and automatic regulation on control and flow can be realized.

Description

technical field [0001] The invention belongs to the technical field of detection technology and automatic control, and relates to the measurement and closed-loop feedback control of high-pressure liquid flow, in particular to a high-pressure liquid flow measurement device and control method based on the phenomenon of flow around a blunt body, which can be used for large-scale industrial process water flow measurement Detection and control. Background technique [0002] In today's world, high-tech technologies based on the Internet and the Internet of Things are increasingly bringing human society from the era of industrialization to the era of information and networking. Detection technology and its automatic control, as the most direct means of obtaining all kinds of information in nature, have become equally important technologies as computers and have penetrated into various fields of daily life and production. [0003] At this stage, the devices for measuring the liquid...

Claims

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Application Information

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IPC IPC(8): G01F1/32G01F25/00G05D7/06
CPCG01F1/32G01F25/00G05D7/06
Inventor 付小宁雷新忠李保明单兰鑫赵蓓古丽军
Owner XIDIAN UNIV
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