基于单片机的称重仪的设计毕业论文

《基于单片机的称重仪的设计毕业论文》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、哈尔滨工业大学华德应用技术学院毕业设计（论文）摘要本设计是基于单片机的称重仪，它的硬件电路设计包括单片机最小系统、A/D转换器、称重传感器、语音电路、LED显示电路、±5V稳压电源电路等几部分设计内容。其中压力传感器输出响应的模拟电压信号，经过模/数转换（A/D变换）后就得到数字量D。但是，数字量D并不是重物的实际重量值W，W需要由数字量D在控制器内部经过一系列的运算——即数据处理才能得到。整个设计系统由Atmel公司生产51系列89S51单片机进行控制；软件实现功能开机检测，主要是开机后自动逐个扫描LED数码管，以防止

2、某段数码管损坏造成视觉误差；出于人性化考虑我们还可以增加语音电路，实现自动语音播报重量。关键词：称重仪；单片机；LEDI哈尔滨工业大学华德应用技术学院毕业设计（论文）AbstractThedesignisbasedonSCMweighinginstrument,anditshardwaredesign,includingminimumsystemmicrocontroller,A/Dconverter,loadcell,voicecircuits,LEDdisplaycircuit,±5Vpowersupplycircu

3、itdesigncontentofseveralparts.Pressuresensoroutputresponseinwhichtheanalogvoltagesignal,afterA/Dconverter(A/Dconversion)obtainedafterthedigitalD.However,thedigitalDisnottheactualweightofthevalueofweightW,WDneededbythedigitalcontrollerthroughaseriesofoperationsins

4、ide-thedataprocessingtoget.Thedesignsystemproduced51seriesYouAtmel89S51Microcontrollercontrol;softwarefeaturesKaijidetection,mainlyby-scanautomaticallyafterpowerLEDdigitaltube,topreventdamagecausedbycertaindigitalvisualerror;forhumanitywecanconsiderincreasethevoi

5、cecircuit,andautomaticvoicebroadcastweight.Keywords:weighinginstrument;SCM;LEDII哈尔滨工业大学华德应用技术学院毕业设计（论文）目录摘要····························································································IAbstract·······················································

6、································II目录·······················································································III第1章绪论····················································································11.1课题背景········································

7、········································11.2课题目的与意义·······································································11.3课题设计要求··········································································41.4称重仪的国内外现状············································

8、·····················2本章小结······················································································5第2章称重仪的总系统设计与各模块方案选型··························