工程实践电子称重系统

成都信息工程大学工程实践（论文）基于MSP430的电子称重系统设计论文报告课程名称：工程实践5学院：通信工程学院专业：通信工程姓名：XXXXXX学号：123456123457班级：XX班指导老师：XXX完成时间：X年X月X日成都信息工程大学工程实践（论文）摘要电子秤是日常生活中常用的电子衡器，智能电子秤测量准确快速，易于实时测量和监控，成为测量领域的主流产品。本设计是基于MSP430单片机的称重系统，可实现0～500g重物的近似测量。系统硬件电路包括MSP430单片机最小系统、传感器电路、信号调理电路、LED显示电路、电源电路共五部分组成。系统使用桥式应变片传感器测量重物并输出电压信号，经过信号调理电路放大后，经单片机模数转换并处理，同时将重量实时显示。系统软件包括AD采样和显示程序。文章还详细阐述了本次设计的调试过程以及在调试过程中遇到的问题及解决方法。本设计完成称重系统的各项功能，经调试，效果良好，具有一定的实用价值。关键词：MSP430；称重传感器；低功耗；便携式成都信息工程大学工程实践（论文）AbstractElectronicscaleisdailylifearecommonlyusedinelectronicweighingapparatus,intelligentelectronicscalemeasurementisaccurateandfast,easytoreal-timemeasurementandmonitoringbecomemainstreamproductsinthefieldofmeasurement.ThedesignisbasedontheMSP430microcontrollerweighingsystem,canachievetheapproximatemeasurementof0~500gweight.SystemhardwarecircuitincludingMSP430microcontrollerminimumsystem,sensorcircuit,signalconditioningcircuit,LEDdisplaycircuit,powercircuit,atotaloffiveparts.Thesystemusesthebridgestraingaugesensortomeasuretheweightandoutputvoltagesignal.Afterthesignalconditioningcircuitisamplified,thesignalisconvertedandprocessedbythesinglechipmicrocomputer,andtheweightisdisplayedatthesametime.SystemsoftwareincludesADsamplinganddisplayprogram.Inthispaper,thedebuggingprocessofthedesignandtheproblemsencounteredintheprocessofdebuggingarealsodescribedindetail.Thedesignoftheweighingsystemofthevariousfunctions,throughdebugging,theeffectisgood,hasacertainpracticalvalue.Keywords：MSP430;weighingsensor;lowpowerconsumption;portable成都信息工程大学工程实践（论文）目录第1章引言................................................................................................................11.3论文主要内容和预期目标............................................................................2第2章称重系统总体方案设计................................................................................32.2.1主控制器模块方案设计........................................................................32.2.2数据采集模块方案设计........................................................................42.2.3数据显示模块方案设计........................................................................52.2.4电源管理模块方案设计........................................................................52.3设计方案总结..................................................................................................5第3章称重系统硬件设计........................................................................................63.1MSP430单片机最小系统设计........................................................................63.1.1MSP430单片机介绍..............................................................................63.1.2MSP430单片机接口电路设计..............................................................73.2称重传感器原理..............................................................................................93.3信号采集模块电路设计................................................................................103.3.1工作原理..............................................................................................103.3.2信号检测电路设计..............................................................................103.4信号调理电路设计........................................................................................103.4.1INA128P工作原理..............................................................................103.4.2信号放大电路......................................................................................113.5AD转换电路设计..........................................................................................113.5.1转换接口电路设计..............................................................................113.6显示电路设计................................................................................................123.7硬件电路设计小结.................................................................................12第4章称重系统软件设计......................................................................................134.1主程序设计....................................................................................................134.2初始化程序模块............................................................................................134.3AD采集与数据处理程序模块......................................................................134.4LED显示程序................................................................................................14成都信息工程大学工程实践（论文）第5章调试与总结..................................................................................................155.1调试中遇到问题及解决方案........................................................................155.1.1MSP430G2553及程序........................................................................155.1.2放大部分及电源..................................................................................155.1.3显示部分..............................................................................................155.2结论................................................................................................................15致谢..........................................................................................................................17附录І