Water gauge error correction method based on fitted equation

Abstract

The invention discloses a water gauge error correction method based on a fitted equation. The method comprises the following steps: a, drawing a water gauge error curve; b, confirming a plurality of calibration interval dividing points on the water gauge error curve, and forming a calibration interval between every two adjacent dividing points; c, forming a calibration interval fitted straight-line equation: epsilon=a+bQ; d, forming a relational expression between the standard volume value and the actual measured volume of the water gauge: VI=[(a+bQ)+1]Vs; e, confirming 1 / [(a+bQ)+1] as the correction factor; and f, obtaining the calibrated water gauge measured value through multiplying an arbitrary value VIi measured in the calibration intervals by the correction factor. Compared with the prior art and through the adoption of the method for supporting, the flow rate measurement performance of the water gauge can be calibrated to be within a very tiny error range meeting the standard requirement, the batch flow rate measurement performance of the water gauge can be guaranteed, the personalized characteristic modification for the water gauge can be realized, the product qualification rate can be guaranteed, the cost can be lowered, and the developing time can be shortened.

Description

technical field [0001] The invention belongs to the technical field of water meters, and specifically relates to a water meter error correction method based on fitting equations. Background technique [0002] Water meter products are large in quantity, wide in scope and complete in category, including mechanical water meters, electronic water meters and water meters with electronic devices, etc., which are not only used for trade settlement of water charges, but also for process control of industrial and agricultural water consumption. Its important role in scientific water use and rational water use is being recognized by people. [0003] The main problems that the impeller type water meter of prior art exists are: [0004] First of all, the flow measurement characteristics of the water meter in the production process can only be determined by the design at present, and the assembled water meter cannot adopt the method of segmental calibration to make its measurement chara...

AI Technical Summary

Problems solved by technology

[0004] First of all, the flow measurement characteristics of the water meter in the production process can only be determined by the design at present, and the assembled water meter cannot adopt the method of segmental calibration to make its measurement characteristics meet the standard requirements, which will cause the error of many water meters to exceed the maximum allowable error range or borderline

At present, the usual way is to replace the parts of the water meter or improve the product design of the water meter. This method not only cannot guarantee the product qualification rate, but also costs a lot and takes a long time.

Images