Dynamic weighing filtering method and system thereof

Abstract

The invention provides a dynamic weighing filtering method and system thereof. The dynamic weighing filtering method comprises the following steps that step S1, continuous and equal-period sampling isperformed on the object weight on a conveying belt; step S2, the sampling result of the object weight is filtered so as to obtain the filtered weight value; step S3, the weight change slope is calculated according to the filtered weight value; step S4, the weighing state of the object is judged by the weight change slope; and step S5, whether a low-pass filter is applied to perform filtering is determined according to the weighing state and the final weight result is outputted. The movement characteristics of the object on the conveying belt can be met and the vibration noise and the weighingerror caused by movement of the object on the conveying belt can be effectively reduced; and the filtering process is fast in speed and high in accuracy, filtering is smooth and transition is stableso that the dynamic weighing process is enabled to be more stable and reliable and the accuracy and the working efficiency of dynamic weighing can be greatly enhanced.

Description

technical field [0001] The invention relates to a weighing filtering method, in particular to a stable and reliable dynamic weighing filtering method, and to a dynamic weighing filtering system using the dynamic weighing filtering method. Background technique [0002] The dynamic electronic scale is a weighing tool used on the assembly line. Now it is more and more widely used. Its working principle is to continuously pass the objects to be weighed through the dynamic electronic scale by the conveyor belt, so that the dynamic electronic scale can continuously detect the weight. , the sampling frequency of 300Hz is generally used in the existing technology. Although this kind of dynamic electronic scale can meet the most basic flow weighing work, but because the moving object will vibrate, it will inevitably cause great damage to the weighing data. The noise further makes this dynamic weighing result unable to meet the requirements of stability and reliability, and there are ...

AI Technical Summary

Problems solved by technology

However, this digitization process will degrade the performance of the filter due to discrete sampling and rounding errors caused by the limited number of bits of calculation

In addition, the weight of items on different pipelines and the law of weighing and sampling changes are not the same. Therefore, this traditional, single filter is difficult to meet actual needs

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