Method for self-testing of electronic belt weighing in real-time and online way

Abstract

The present invention discloses a method for the self-testing of electronic belt weighing in a real-time and online way. A real-time online self-testing device is employed in implementation, the self-testing device comprises a PLC, a weighing type pressure material level meter arranged on a storage bin and an electronic belt scale under the storage bin. The electronic belt scale comprises an electronic belt and a weighing instrument arranged in the electronic belt. The method comprises the following steps that when the storage bin is not fed, the weighing type pressure material level meter detects the weight change signal of the material in the material bin in the process of outputting the material, the material conveying amount signal of the electronic belt scale is detected through the weighing instrument arranged in the electronic belt, through transmitting the weighing value of the material weight change signal in the storage bin and the weighing value of material conveying amount signal of the electronic belt scale to the PLC respectively, whether the weighing transmission of the electronic belt scale is in a correct accuracy range is judged. According to the method, the electronic belt scale weighing accuracy can be monitored in an online and real-time way and improved.

Description

technical field [0001] The invention relates to an automatic detection method, in particular to a method for automatic detection of weighing by an electronic belt scale. Background technique [0002] The sintering batching is usually to transfer the raw materials in different silos to the mixing drum by the electronic belt scale according to the ratio given by the programmable logic controller (PLC). The weighing accuracy of the electronic belt scale will be directly related to the chemical composition in the sintered ore, whether it meets the requirements of the blast furnace, so it is an important key node in the sintering control. The batching electronic belt scale is composed of a short belt conveyor and a measurement and control device. The main components include: rollers, motors, endless belts, cleaners, tension adjustment, weighing and carrying devices and other components. The working mode and performance characteristics of the batching electronic belt scale are: t...

AI Technical Summary

Problems solved by technology

Its online calibration is only to check the two weighing sensors, without considering the influence of factors such as the operation of the belt itself and the error of A / D conversion on the weighing of the electronic belt scale, so the scope of application is small

[0007] The technical solution disclosed in the Chinese invention patent application titled "Method and System for Accuracy Checking of Electronic Belt Scale" with publication number CN102175297A can improve the weighing accuracy of electronic belt scales, but cannot perform online real-time checks. At the same time, it also requires investment in equipment such as industrial microcomputers, which is not suitable for on-site use environments.

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