Ultrasonic water meter coefficient processing method

A flow coefficient and processing method technology, applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, measuring devices, etc., can solve the problems of processing result errors, inaccurate calculation of fluid flow, etc., to reduce circuit manufacturing costs, widely Apply, calculate precise effects

Active Publication Date: 2014-07-09
姜跃炜
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Problems solved by technology

In the prior art, the processing of the fluid flow is obtained through the propagation time of the ultrasonic wave and the sound velocity of the ultrasonic wave, and the results are not corrected according to various factors, resulting in errors in the processing results and insufficient calculation of the fluid flow precise

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  • Ultrasonic water meter coefficient processing method
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  • Ultrasonic water meter coefficient processing method

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Embodiment Construction

[0008] Combine below figure 1 , the present invention is described in further detail.

[0009] A method for processing the flow coefficient of an ultrasonic water meter, including the following steps: (A) Take out the time difference value obtained in this detection from the memory, and record it as t; (B) According to the built-in time difference boundary array A[m]={a 1 ,a 2 ,a 3 ,...,a m} to obtain the time difference partition number, where the time difference detection range of the ultrasonic water meter is [t min ,t max ] and a 1 min 2 m-1 max m , if tmin or t>t max , the ultrasonic water meter reports an error and stops flow detection, if a i ≤ti+1 , the time difference partition number is i; (C) Take out the water temperature value obtained from this test from the memory, which is w; (D) According to the built-in water temperature boundary array B[n]={b 1 ,b 2 ,b 3 ,...,b n} to obtain the water temperature partition number, where the temperature detection ra...

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Abstract

The invention relates to the technical field of ultrasonic flow detection, in particular to an ultrasonic water meter coefficient processing method. The method includes extracting a time difference value acquired by the current detection in memory, and recording as t; acquiring a time difference area number i according to program built-in time difference boundary arrays A (m); acquiring a water temperature value w through the current detection in the memory; acquiring a water temperature area number j according to program built-in water temperature boundary arrays B (n); extracting and processing four elements ki, j and ki, j+1 and ki+1, j and ki+1, j+1 from a program built-in two-dimensional coefficient matrix (m, n) according to the time difference area number i and the water temperature area number j, and acquiring a fitting coefficient k0 through a formula k0 = S1+(S2-S1)*Delta B, an ultrasonic velocity coefficient W through a formula W=c4*w4+c3*w3+c2*w2+c1*w, and a fluid volume Q through a formula Q=t*k0*W. By the series of processing, the flow calculation of an ultrasonic water meter is more accurate, affects on the processing results by various factors are avoided, the processing process is simplified, and water meter manufacturing cost is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of ultrasonic flow detection, in particular to a method for processing the flow coefficient of an ultrasonic water meter. Background technique [0002] Ultrasonic water meter is a fully electronic water meter made of industrial-grade electronic components using the principle of ultrasonic time difference. Compared with mechanical water meters, it has high precision, good reliability, wide range ratio, long service life, no moving parts, no need With the advantages of setting parameters and installing at any angle, with the progress of society, ultrasonic water meters are used more and more widely. [0003] When measuring, the ultrasonic water meter uses the difference between the forward and backward propagation time of the ultrasonic pulse in the fluid to measure the fluid flow rate, and then calculates the flow rate of the fluid in the pipeline according to the cross-sectional area of ​​the pipeline. Duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F15/02G01F1/66
Inventor 姜跃炜薛明星
Owner 姜跃炜
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