Water meter calibration method and device based on pulse method

A calibration method, the technology of pulse method, is applied in the direction of test/calibration device, measurement device, test/calibration volume flow, etc., to achieve the effect of low resource consumption, accurate calibration and high precision

CN114608678APending Publication Date: 2022-06-10HANGZHOU SUNRISE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-06-10

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Abstract

The invention discloses a water meter calibration method and device based on a pulse method, and the method comprises the following steps: determining that a standard water meter and a measured water meter are connected to water meter detection equipment in series; water with different water conditions is controlled to be sequentially introduced into the standard water meter and the measured water meter, and the water condition parameters comprise the flow speed, the water pressure and the water temperature; collecting pulses of the standard water meter and the measured water meter in the same time period, and recording each pulse time point; according to the pulses collected under the same water condition, the error of the measured water meter under the corresponding water condition is calculated; and correspondingly calibrating the measured water meter according to the error data of the measured water meter. By means of the technical scheme, errors under the conditions of different flow speeds, different water temperatures, different water pressures and the like can be measured within a short time, the measuring efficiency and the measuring precision are improved, and calibration of the measured water meter is more accurate.
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Description

technical field

[0001] The invention relates to the technical field of water meter calibration, in particular to a water meter calibration method and device based on a pulse method. Background technique

[0002] In the verification work of the water meter laboratory, the start-stop volume method is mostly used to verify the small-caliber and serial water meter verification devices; the load-bearing method is used to verify the water meter automatic verification device. Both the small-caliber water meter detection device and the series water meter verification device need to manually read the data displayed on the water meter dial, and then open the flow regulating valve to make the flow rate reach the detection flow point. After the accumulated flow reaches the detection standard, close the flow regulating valve. After the value is stable, manually read the workload and the data displayed on the water meter dial, and then calculate the error of the verification value of the ...

Examples

Embodiment Construction

[0043] Under each water condition parameter, the pulses sent by the standard water meter and the measured water meter are collected simultaneously, and the number of collected pulses is the same, which makes the calculation of the error more convenient and accurate, and is conducive to improving the accuracy of the prediction.

[0044] Further, step S108, calculating the error of the measured water meter under the corresponding water condition according to the pulses collected under the same water condition, includes the following steps: obtaining the standard water meter and the measured water meter collected under the same water condition The first pulse time point and the Nth pulse time point, N is equal to the total number of pulses collected under the corresponding water conditions;

[0045] By recording multiple pulse time points in the same time period and taking the average value of the time interval between two pulses to calculate the error of the measured water meter,...