灌装流水线自动称重系统设计报告.pdf

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1、灌装流水线中的自动称重系统设计摘要：称重系统从最初的机电结合型发展到现在的全电子型和数字智能型。我国电子称重控制器的技术设备和检测实验手段基本能达到国际90年代中期的水平。电子称重系统制造技术及应用得到了新发展：电子称重技术从静态称重向动态称重发展；计量方法从模拟测量向数字测量发展；测量特点从单参数测量向多参数测量发展。特别是对快速称重和动态称重的研究与发展。基于此趋势，本文设计了一款以单片机为主要部件的电子秤，用汇编语言进行软件控制，硬件则以应变式压力传感器为主。秤重传感器输出的电量是模拟量，数值比较小

2、，采用HX711高精度24位，自带放大电路，设计精度高。A/D转换的结果送单片机进行数据处理包括软件滤波并显示。其数据显示部分采用LCD显示，整体部件性价比高，并能很好地实现所要求的功能。关键词：称重系统；单片机；A/D转换；硬件设计DesignOfAutomaticWeighingSystemInTheFillingLineAbstract:AdvancedFromtheinitialtothepresent，weighingsystemhasdevelopedfromthemechanicalande

3、lectricalcombinationtypetoallelectricalandintelligentdigitaltype.NowtheelectronicweighingcontrollerofChinacanreachtheinternationallevelofthemid-90-sontechnologyequipmentandtestmethod.Themanufacturingtechnologyandapplicationofelectronicweighingsystemhasgot

4、thenewdevelopment:whichdevelopedfromstatictodynamicweighingelectronicweighingtechnology;Measurementmethodshavedevelopedfromanalogtodigitalmeasurement;Measuringcharacteristicshavedevelopedfromsingleparametertothemulti-parametermeasurement.Especiallyforther

5、esearchonthequickweighinganddynamicweighing.Basedonthistrend,wedesignedaelectronicscalewhichusedthesinglechipprocessorasthemaincomponents.Usingtheassemblylanguageforsoftwarecontrol,andthehardwarewasgivenprioritytothestraintypepressuresensor.Theoutputpower

6、ofweighingsensorwasanalogandthenumericalcomparisonwassmall.SowechoosetheHX711whichhadthehigh-precision24,thebuilt-inamplifiercircuitandhighprecision.TheresultoftheA/Dconversionwassenttothesingle-chipcomputerwhichincludedsoftwarefilteringfordisplaying.Thed

7、atadisplayedadopttheLCDdisplay.Sotheelectronicscalehadthehighcostperformanceandintegralparts,andcouldgettherequiredfunctionswell.Keywords:weighingsystem；singlechipmicrocomputer；A/Dconversion；thehardwaredesign-1-目录1.1自动称重系统概述...............................

8、..............................................................................-3-1.2自动称重系统的发展现状与前景....................................................................................-3-1.2.1国内发展现状...................