基于STM32的动态称重分选系统的研发与实现

发布时间：2018-05-02 04:03

本文选题：动态称重 + 嵌入式　；参考：《重庆大学》2016年硕士论文

【摘要】：在工农业生产中,随着现代化大生产和自动流水线化操作的深度普及,传统的静态称重检测仪表越来越不能满足工农业生产的日益增长的需求,人们越来越需要能够在线实时检测称重并分选的电子秤。在相关电子衡器的研制方面,与国外相比,国内生产研制的产品功能相对单一,速度不快,精度不高,且故障频繁。作为自动流水线上的重要的一环,动态电子秤的称重精度和分选速度将直接影响到流水线上的生产效率和产品品质。因此研制一款具有高精度,多分选,速度快,稳定可靠的动态电子秤将极大满足我国现在市场的迫切需求。本文结合嵌入式技术,在调研了国内外的动态电子秤的研究现状后,设计了一种基于STM32的嵌入式在线实时检测称重分选控制系统。首先研究了动态分选秤的工作原理,采用了皮带和气动拨杆的机械结构。其次提出了动态分选秤的软硬件整体设计方案。充分考虑系统的稳定性和抗干扰性的前提下,设计了以STM32为主控芯片结合传感器模块、迪文屏人机交互模块、存储模块、驱动模块、端口输入输出模块以及其他外围模块组成系统的硬件平台,并对系统的各个模块进行仔细的分析和软件设计,完成整个控制系统。本文最后对动态称重数据的处理精度进行了研究,分别论述了滑动滤波、中值滤波、低通滤波和卡尔曼滤波四种基本的数据滤波算法,通过实验数据分析验证,提出了一种自适应算法,满足了系统称量精度的要求。
[Abstract]:In industrial and agricultural production, with the popularization of modern mass production and automatic pipeline operation, the traditional static weighing instrument can not meet the increasing demand of industrial and agricultural production. There is a growing need for electronic scales that can be measured and sorted in real-time online. In the development of related electronic weighing apparatus, compared with foreign countries, the domestic production and development of the product function is relatively single, the speed is not fast, the accuracy is not high, and the faults are frequent. As an important part of the automatic assembly line, the weighing accuracy and sorting speed of the dynamic electronic scale will directly affect the production efficiency and product quality on the assembly line. Therefore, the development of a dynamic electronic scale with high precision, multi-sorting, high speed, stability and reliability will greatly meet the urgent needs of the market in our country. Based on the embedded technology and the research status of dynamic electronic scales at home and abroad, this paper designs an embedded on-line on-line weighing and sorting control system based on STM32. Firstly, the working principle of dynamic sorting scale is studied, and the mechanical structure of belt and pneumatic lever is adopted. Secondly, the whole design scheme of software and hardware of dynamic sorting scale is put forward. Considering the stability and anti-interference of the system, the paper designs the sensor module, the human-computer interaction module, the memory module and the driving module based on STM32. The port input and output module and other peripheral modules constitute the hardware platform of the system, and each module of the system is analyzed carefully and the software is designed to complete the whole control system. Finally, the processing accuracy of dynamic weighing data is studied. Four basic data filtering algorithms, sliding filter, median filter, low pass filter and Kalman filter, are discussed, which are verified by experimental data analysis. An adaptive algorithm is proposed to meet the requirement of system weighing accuracy.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH715.1

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