Weighing system and weighing method having self-calibration function

Abstract

The invention discloses a weighing system and a weighing method having the self-calibration function. The system comprises an initiation unit and a calibration processing unit, wherein the initiation unit is used for storing effective zones, the effective zones comprise multiple data points confirmed by object weight values and current values, the calibration processing unit is used for acquiring a standard weight value of any standard object and determining whether data points confirmed by the standard weight value of the standard object and a current value acquired during measuring the actual weight value of the standard object are in the effective zones, if yes, weighing precision satisfies requirements, otherwise, weighing precision does not satisfy the requirements, and the standard object is a weighing empty bucket or the weighing empty bucket plus known-weight objects. Through the system, whether weighing precision satisfies the requirements is automatically determined.

Description

technical field [0001] The invention relates to a weighing system of engineering machinery, in particular to a weighing system with self-calibration function and a method thereof. Background technique [0002] At present, the weighing equipment on construction machinery, especially the weighing equipment of construction machinery with weighing bucket, mostly uses weighing instruments coupled with PLC (Programmable Logic Controller, Programmable Logic Controller) to realize automatic weighing and control functions. , that is, the weighing instrument sends the weight value of the weighed object directly to the PLC, and displays based on the weight value. Most of its weighing calibration settings are performed when reinstalling, according to time management, or when calibration is required by human judgment, which has a certain degree of subjectivity, and often cannot guarantee the accuracy of weighing. [0003] Especially for construction machinery with a large tonnage weighi...

AI Technical Summary

Problems solved by technology

Most of its weighing calibration settings are performed when reinstallation, time management or human judgment need to be calibrated, which has a certain degree of subjectivity, and often cannot guarantee the accuracy of weighing

[0003] Especially for construction machinery with a large tonnage weighing bucket structure, due to the particularity of the weight of the calibration weight, the harsh working conditions, and the sensor installation method, wear, and gap blockage of the weighing system’s hardware, etc. Accurate weighing of the weighing system brings many challenges, but also brings a lot of inconvenience to the weighing calibration operation

[0004] Therefore, at present, for various situations where the error of on-site weighing is greater than the accuracy requirement, automatic warning cannot be realized, and it can only be judged by humans, and the accuracy of weighing cannot be guaranteed.

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