单片机课程设计电子秤.pdf

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1、单片机课程设计设计题目：简易电子秤的设计班级：机控学院机械电子工程12(1)组员：2012330300010包日奉2012330300014陈绍用指导教师：袁嫣红完成日期：2015年1月30日浙江理工大学摘要随着微电子技术的发展，市场上使用的传统称重工具已经满足不了人们的要求，为了改变传统称重工具在使用上存在的问题，本设计中将智能化、自动化用在了电子秤系统中。此电子称很大程度上满足了应用需求，具有很大的应用前景。本设计以单片机MCS-51系列的AT89C51集成电路为信息处理核心，提出电子秤的硬件设计方案、详细的分析了个单元的硬件电路，给出了

2、一起电路设计和软件流程，以及相关电路图、原路图，最后介绍了系统的软件调试。关键词：电子秤AT89C51硬件设计1目录1.绪论1.1.选题的背景和意义·······················································11.2研究现状·······························································11.3论文主要研究内容·······················································12.总体设计

3、方案2.1电子秤总体设计方案·····················································22.2称重传感器设计方案·····················································22.3模数转换器设计方案·····················································22.4键盘设计方案···························································32.5显示

4、器设计方案·························································42.6过载报警设计方案··········································43.硬件设计3.1模数转换电路····························································43.2LCD显示屏························································63.3键盘电路框图······

5、······················································113.4报警器电路框图·························································123.5总程序框图·····························································124.硬件调试···································································154.1

6、仿真图··································································155.参考文献···································································146．附录.6.2汇编程序·································································1721.1选题的背景和意义电子秤是日常生活中常用的称重器材，广泛应用于超市、商场、物流配送中心等部门

7、。电子秤在结构和原理上取代了一杠杆平衡为原理的传统机械式称重工具。相比传统的机械式称量工具，电子秤具有称量精度高、装机体积小、应用范围广、易于操作使用等优点，在外形布局、工作原理、结构和材料上都是全新的计量仪器。电子秤的设计首先是通过压力传感器采集到被测物体的重量并将其转换成电信号，经过放大模块的模拟电压信号经A/D转换电路转换成数字量被送入到单片机中，再经过单片机控制显示器，从而显示出被测物体的重量。1.2研究现状电子秤不仅要向高精度、高可靠方向发展，而且更需向多种功能的方向发展。目前电子秤的附加功能主要有以下几种：1.电子秤附加了处理机构

8、计算机信息补偿装置，可以进行自诊断、自校正和多种补偿计算和处理。2.具有皮重、净重显示等特种功能。电子秤有些已经具备了动物称量模式，即通过进行算数平均、积分处理和自