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Ultrasonic water meter interception coefficient processing method

A processing method and ultrasonic technology, which are applied in measuring devices, instruments, measuring flow rate/mass flow rate, etc., can solve the problem that the reliability of calculation results cannot be guaranteed, and achieve the effect of accurate and stable results.

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

When the existing ultrasonic water meter is calculating, it only calculates the flow rate according to the current ultrasonic propagation time, and the reliability of the calculation result cannot be guaranteed.

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  • Ultrasonic water meter interception 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 interception coefficient of an ultrasonic water meter, comprising the following steps: (A) taking out the calculated value of the last interception coefficient from the memory, denoted as P n-1 , where the initial value of the interception coefficient is 0; (B) take out the time difference t obtained from this detection from the memory; (C) this interception coefficient P n =k 1 ×P n-1 +k 2 ×t; (D) judge P n with a preset minimum value of P min and the maximum value P max The relationship between, if P n ≤P min , then P min write to memory, if P n ≥P max , then P max write to memory, otherwise P n Write to memory; (E) judge P n with a preset threshold P 1 and P 2 The relationship between, if P n ≥P 2 , then execute the normal flow processing procedure, if P n ≤P 1 , directly set the detected flow to 0, if P 1 n 2 , then enter the flow ...

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Abstract

The invention relates to the technical field of ultrasonic water meter detection, in particular to an ultrasonic water meter interception coefficient processing method. The method includes A, extracting a calculation value of a last interception coefficient in memory; B, extracting a time difference acquired by the current detection in the memory; C, acquiring a current interception coefficient Pn according to the step A and step B; D, judging relations between the Pn with a minimum Pmin and a maximum Pmax, and writing an appropriate value into the memory; E, judging the relations between the Pn with a preset threshold P1 and P2, and entering different flow processing programs. By guiding in the interception coefficient, according to the associations of the current detecting time with the last interception coefficient, by means of the feature that the flow of a fluid in the ultrasonic water meter never change suddenly, the current detecting time difference can be judged, and different flow processing programs are entered according to different judging results, so that the calculated result is more accurate, and initiative flow performance indexes of flow detection can be improved greatly.

Description

technical field [0001] The invention relates to the technical field of ultrasonic flow detection, in particular to a method for processing interception coefficients of ultrasonic water meters. 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. D...

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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