发布时间 : 星期六 文章PVC物料自动上料系统-毕业设计更新完毕开始阅读
长春大学 毕业设计（论文）
摘 要
在实际生产生活中，为了提高产品的生产效率，改进生产工艺，自动上料系统被越来越广泛的应用。目前大型的生产加工企业使用的是基于PC+PLC的控制方式的自动物料上料系统，该方式价格昂贵、控制系统复杂，具有统计管理确保数据的备份、查询、统计、打印等的功能。针对小型加工企业和生产自动化程度要求不高的企业，不但要考虑成本还要节约人力资源，本课题基于这两个方面考虑，研发了一种“基于单片机的pvc物料自动上料控制系统”。
本设计利用单片机，完成一个完整的送料控制、放料控制、料满自动检测的过程，通过人机接口能够自行调节上料、放料时间等功能，完全能够满足小型加工企业自动上料、放料的需要。
该pvc物料上料机控系统的工作原理：基于AT89S51单片机设计一款真空上料机控制器，要求该控制器能够进行上料、放料整个工作流程的过程控制。其工作参数包括上料时间（5-60秒），放料时间（5-60秒）。其中的上放料时间参数可以用过面板上的轻触按键进行输入，并保存于EEPROM中，功率驱动方式选择场效应管来进行控制，从而实现了真空自动上料、放料的功能。
【关键词】自动上料控制系统 单片机 AT89S51 硬件设计
长春大学 毕业设计（论文）
Abstract
In actual production, in order to improve production efficiency, improve production technology, automatic feeding system is widely applied. The current large-scale production and processing enterprises are using PC + PLC based control mode, the method is expensive and complex control system, can statistical management to ensure data backup, query, statistics, printing. For small-scale processing enterprises, and production automation less demanding situations, we must consider the cost savings but also human resources, based on these two aspects of this issue to consider, research and development of a \
We use SCM, the completion of a complete feed control, discharge control; full automatic detection of material through the human interface to the self-loading, discharge time and other functions, small-scale processing enterprises can completely meet the automatic feeding, discharge function.
The vacuum on the feeder control system works: AT89S51 Microcontroller based Design of a vacuum on the feeder controller, requiring the controller to carry out the material discharge control of the entire workflow. Its operating parameters, including loading time (5-60 seconds), discharge time (5-60 seconds). Among them, the discharge time parameters can be used on the touch panel buttons for input, and stored in EEPROM, power driver FET control mode choice. Thus constituting a vacuum automatic feeding, discharge of functions.
Key words: automatic feed mechanism system； MCU; AT89S51；Hardware design; Watchdog
长春大学 毕业设计（论文）
目 录
第一章 绪 论 ······················································································································· 4
1.1 题目来源及课题意义 ·································································································· 4 1.2 自动上料机控制系统的工作原理及技术要求 ···························································· 4 1.3 系统的预期功能 ·········································································································· 5 第二章 总体方案设计 ·········································································································· 6
2.1 上料机控制方案 ·········································································································· 6 2.2 系统结构框图 ·············································································································· 7 2.3 单片机的选择 ·············································································································· 8 2.4 物位传感器的选择 ······································································································ 9 2.5 LED显示电路的选择 ································································································· 10 2.6 键盘输入电路的选择 ································································································ 10 第三章
自动上料机主电路 ································································································ 12
3.1 系统硬件电路图 ········································································································· 12 3.2 电源电路···················································································································· 12 3.3 电路核心器件介绍 ···································································································· 13 3.4 显示电路···················································································································· 19 3.5 看门狗X5045电路 ···································································································· 20 3.6 接近开关···················································································································· 23 第四章 系统的抗干扰及可靠性 ························································································· 24 第五章 系统调试 ················································································································ 25
5.1 硬件调试···················································································································· 25 5.2 软件调试···················································································································· 25
附录I系统硬件原理图 ····························································································· 29
附录II电路PCB板图 ······························································································· 31 附录III 英文翻译及译文 ························································· 错误！未定义书签。
长春大学 毕业设计（论文）
第一章 绪 论
1.1 题目来源及课题意义
在现代科学技术的许多领域中，自动控制技术起到了愈来愈重要的作
用，并且，随着生产和科学技术的逐步发展，生产自动化水平也越来越高。自动控制就是利用控制装置使被控对象的某个参数自动的按照预定的规律运行。本设计的pvc物料自动上料机控制系统就是采用自动控制技术来实现功能的，这样就大大提高了工作的效率，整个过程又快又稳。
这个产品的出现具有跨时代的意义，广泛应用于塑料、橡胶、化工、医
药、食品等行业。它是采用全密闭输送系统来完成对pvc物料的运输，这就完全杜绝了由于物料泄露造成的对环境的污染和对操作人员身体的伤害，以及周围环境对于物料自身的污染。是近年来pvc物料输送的发展方向。真空发生器的优点是体积小、重量轻、便于安装，可应用在洁净厂房内。它是采用射流技术，使真空发生器在压缩空气的作用下产生高真空来实现对物料的输送，不需要机械式真空泵，也没有任何润滑元件和其他的运动部件，完全符合GMP要求。它可以和混合机、包衣机、压片机、制粒机、胶囊充填机，包装机等主要工艺设备配套使用；随着其在中国的不断推广及应用，必将会对我国在该领域优化生产工艺流程、有效减少交叉污染与粉尘、提高药品生产品质起到积极作用。
1.2 自动上料机控制系统的工作原理及技术要求
我们利用单片机，来完成一个完整的送料控制、放料控制、料满自动检测过程，通过人机接口能够实现自行调节上料、放料时间等功能，完全能够满足小型加工企业自动上料、放料功能。
该pvc物料上料机控系统的工作原理：基于AT89S51单片机设计一款真空上料机控制器，要求该控制器能够进行上料、放料整个工作流程的控制。其工作参数包括上料时间（5-60秒），放料时间（5-60秒）。其中，上放料时间参数可以用过面板上的轻触按键进行输入，并保存于EEPROM中，功率驱动方式采用场效