An online calibration method for an electronic belt scale

Abstract

The invention discloses an online calibration method for an electronic belt scale provided by the invention, which includes performing an accuracy calibration on the electronic belt scale, and if the actual accuracy error value is greater than the accuracy error threshold value, then by "selecting n instantaneous flow rate measurement The average value is the adjusted instantaneous flow measurement, and the number and time of calibration detection are extended to reduce the calibration accuracy error of the electronic belt scale and improve the calibration stability of the electronic belt scale. In addition, it also includes the accuracy calibration of the electronic belt scale; The stability composite index fills the gap in the stability calibration and adjustment of the electronic belt scale. Through the composite calibration and adjustment, the stability and accuracy of the electronic belt scale can be accurately distinguished and improved, and then the material fluctuation and measurement error of the batching production line can be correctly distinguished. , to achieve the goal of precise batching, and the operation steps during online calibration are relatively simple. It can be combined with the current general electronic belt scale automatic control facilities for automatic control settings, simplifying front-line operations and facilitating promotion.

Description

technical field [0001] The invention relates to the technical field of material measurement, in particular to an online calibration method for an electronic belt scale. Background technique [0002] Electronic belt scale is a kind of measurement facility that is widely used at present. It is mostly used for material transportation, batching and other purposes. It is widely used in logistics, metallurgy, mining and other production fields. Affected by factors such as belt wear and conveying material adhesion, the actual operation of the electronic belt scale fluctuates to a certain extent, resulting in distortion of the measurement data. In order to ensure the accuracy of the measurement data of the electronic belt scale, it must be checked regularly. [0003] According to the current international recommendations (OIML R50:1996), national metrology verification regulations (JJG195-2002) and national standards (GB / T 7721-2007), the electronic belt scale has three accuracy lev...

AI Technical Summary

Problems solved by technology

Although there is a "zero-point stability verification" regulation in the general electronic belt scale verification standard (when the belt runs to the full number of turns with no load and as close as possible to 3 minutes, read the flow indication value 5 times each, and the maximum value among them The difference between the test method and the minimum value should meet the specified requirements), but on the one hand, the implementation error of this verification method is relatively large, and on the other hand, it is generally not implemented in production enterprises due to factors such as post operation level and working environment, resulting in electronic During the actual use of the belt scale, there are problems such as material fluctuation and measurement error confusion, which lead to the inability to achieve accurate batching

[0004] Therefore, how to solve the problem that the material fluctuation and the measurement error are confused during the actual use of the electronic belt scale, which leads to the inability to achieve accurate batching, is a technical problem that those skilled in the art need to solve at present.

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