基于小波分析的自动包装机快速称量系统

目的 随着袋装商品需求的增加，设计一种新型包装机自动称量系统来快速完成称量包装。方法 设计一种基于ARM最小系统的包装机控制系统，其中包括灵敏度为2 mV/V双应变片称量结构、mV级别的数模转换电路和驱动电路等多个部分，并且通过编写称量流程、AD设备驱动和小波变换提取等软件系统，最后利用质量采集和响应对比实验分析系统。结果 实验发现，小波变换提取信号在0.2 ms即可稳定识别的质量为300 g。结论 结果证明所设计的自动包装系统可以稳定实现各类袋式产品的快速称量封装。

Fast Weighing System of Automatic Packaging Machine Based on Wavelet Analysis

The work aims to design a new automatic weighing system of the packaging machine to complete weighing and packaging quickly, with the increasing demand for bagged goods. A packaging machine control system based on the ARM minimum system was designed, which included the weighing structure of 2 mV/V double strain gauge, the DAC conversion circuit and the driving circuit of the mV level. Moreover, the weight acquisition and response comparison experiment were finally used to analyze the system by programming the software systems like weighing process, AD device driver and wavelet transform extraction. Based on the experiment, the weight that could be stably identified was 300 g when the wavelet transform extraction signal was at 0.2 ms. The results show that the designed automatic packaging system can achieve the fast and stable weighing and packaging of all kinds of bagged products.