台式电子秤 基于单片机控制的电子秤
无线电子吊钩秤 http://www.dianzidiaogoucheng.com
台式电子秤 基于单片机控制的电子秤
摘要 当代社会的生长对其称重技术提出了更高的央求条件.目前,台式电了秤在商业贸易中的应用已相 当普遍,但生活较大的局限性:体积大,本钱高,须要工频调换电源供给,领导未便,应用场所遭 到限制.但是在工业丈量中还没有让人们期望的电子秤展现.多年来,人们无间期待测量确凿,价 钱便宜的在工业发展中起到壮大作用的电子秤投放市场. 本文计划了一种电子秤,陈述了仪器的就业原理,先容了仪器的误差原因与误差分配,防爆电动葫 芦.给出了仪器电路设计与软件流程,对于 小型电子称 电子称产生了静电是一件比较麻烦的事情 探究了仪器的工程设计技术.听听电葫芦价格.针对应变式称重传感器非线性影响大的题目,提出 并开发了应变式称重传感器的非线性影响模型与校正模型,为电子秤的低成本准确称量奠定了实际 根源. 电子秤是严重由电源,称重传感器,单片机,键盘/开关,LED显示器等局限组成.主要技术目标为 :称量界限300kg—500kg;分度值0.01kg;精度等级m级;电源5v.仪器的技术指标参考了目前国 际市场上使用最多,国内外产量最大的电子衡器的技术指标,其合感性无疑加大了产品投放市场后 的角逐才华.仪器主要成效有自检,计价,累计,单价设定,过载报警等. 目前国际化的趋向是电子秤向小型化,模块化,集成化,智能化,其技术职能趋向于速率高,准确 度高,不乱性该,确实性初等,其功能趋向是称重计量的统制消息和非控制信息偏重的智能化电子 秤.
关键词单片机;应变式电阻器;缩吝惜;滤波器
台式电子秤
Abstract Thedevelopmentofthemodernsocietyhasputforwardhigherrequestonweighingtechnology.Thedesktopelectronicscaleshavebeengreatapplicationincommercialtrade,buttheyhavemanyshortcomingssuchaslargevolu me,highcost,ACsupplypowerandnotcovenincetocarry,sotheyarerestrictedtouse.Theusualportablescalesareleversc
aleswhicharemostlyusedbyresidents,andspringbalancewhichmeasurethroughcompressionordrawingofspring.The yarebeingrejectedfortheirbigmeasuringerrors.Peoplehavebeenexpectingcheapportableelectronicscaleswhichcanm easureaccuratelyandbecarriedconvenientlyformanyyears. Thisthesisdesignsnewtypeportableelectronicscales.Itdiscussestheinstrumentalworkingprinciple,andintroducesitserrorsourcesandhowto distributetheerror.And,theinstrumentalcircuit,software-flowchartandengineeringdesigningtechnologyarepresented.Becausecapacitanceweighingsensorisofbadnonlinearity,theauthorputforwardandsetupamathmodeltorevisenonlinearity,whichestablishesthetheorybasisfortheinstrumenttomeasureaccuratelyandbelow-cost. Theportableelectronicscalesconsistofpower,weighingsensor,microchip,keyboard/switchLEDandetc.Itstechnicali ndictorsinclude10kgmaximalmeasuringrange,10gdivisionvalue,IIIprecision,1.5Vworkvoltage.Itstechnicalindictor srefertotheindictorsoftheelectriconicmeasuringtoolsofmostpopularityinthemarketsandoflargeoutputathomeandb oard,sotheinstrumentisstrengthenedthecompetitivepowerafterputtingonmarkets.Itpossessesmanyintelligentfuncti ons,suchasshelling,lack-of-powerdisplay,overloadalarm,unitpriceenactment,accumulationcomputation,selfcalibratingandetc.Itcan"sleep"automaticallyinfiveminutesifitisnotmeasuring. Newtypeportableelectronicscalescanmeasuremassrapidlyandaccuratelyandcommunicatevalue.Furthermore,itissmall,s implystructured,easytooperateandconvenienttocarry.Theinstrumentisabletomeettheneedsofcommercialtradeand residents,soitsapplicationhasabrightfuture. KeyWordsPortableElectronicScales;CapacitanceWeighingSensor;NonlinearityRevision;Microcontroller;Errordistribution;EngineeringDesign.

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