基于FPGA的高精度液体灌装控制系统设计  

Control System Design for High-Precision Liquid Filling Based on FPGA

作　　者：吉永林[1] JI Yonglin(Hangzhou Zhongya Machinery Co.,Ltd.,Hangzhou 310011,China)

机构地区：[1]杭州中亚机械股份有限公司,浙江杭州310011

出　　处：《轻工机械》2021年第3期69-72,共4页Light Industry Machinery

基　　金：杭州市科技创新项目:高速直线式吹灌旋一体化智能无菌灌装生产线研制(20182011A07)。

摘　　要：针对采用PLC+高速计数模块的液体灌装存在灌装效率低和灌装精度差的缺点,课题组分析研究了高效率和高精度液体灌装控制系统的方法原理和实现过程;基于FPGA控制芯片的高速以及并行处理的特点,通过对流量脉冲数据进行多路平行高速采集、滤波、计数和对比,实时控制多路灌装阀。再结合MCU的软件处理的灵活性,实现与HMI端的高效通信,能够实时进行数据交互。对液体灌装控制系统调试后,得到了平稳的流速曲线以及稳定的灌装量曲线。经过工业现场的使用和验证表明该控制系统达到了提高生产效率和灌装精度的设计目的。The liquid filling control system with PLC+ high-speed counting module has disadvantages of low filling efficiency and poor filling accuracy. The research group analyzed the approach principle and the realization process for high-efficiency and high-accuracy liquid filing control system, and based on the characteristics of high-speed and parallel processing of FPGA(field programmable gate array) control chip, carried out the high-speed collection, filtering, counting and comparing in parallel multiway for the flow ratepulse data to realize the control of the filling valves in multi-channels.Combined with the flexibility of MCU software, it can realize the high-efficiency communication with HMI terminal and real time data exchange. After the commissioning of liquid filling control system, a stable flow rate curve and a steady filling volume curve were obtained. The industrial application and verification show that the control system achieves the design purpose of improving production efficiency and filling accuracy.

关 键 词：灌装 电磁流量计 灌装阀控制 灌装精度 FPGA 

分 类 号：TS252[轻工技术与工程—农产品加工及贮藏工程] TP273[轻工技术与工程—食品科学与工程]