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

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...

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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 control method based on the phenomenon of flow around a blunt body, which is used to solve the problems of low industrial control quality and The problem of narrow range

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