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ID:9033958
大小:774.83 KB
页数:52页
时间:2018-04-15
《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··························
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