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1、第34页共40页摘要智能电表给高效率管理电能带来了极大的方便,因此逐渐普及到人们的家居生活。本论文针对用户的需求设计的一种智能电表,可用于单相工频电参数的精密测量,包括电流、电压、频率、有功功率、视在功率、有功电能,视在电能等,且具有显示功能。首先,论文介绍了电测量理论及仪器技术的发展情况,对目前常用的多种电参数测量技术在计量精度、成本以及可靠性等方面进行了分析比较,随后根据系统的技术要求和功能特点确定了总体设计和实现方案。硬件设计部分重点研究了如何简化电路、降低设备成本并能够实现多功能及高精度计量,采用高性能电能计量芯片取代
2、了传统的采样电路进行电能的测量,并在设计时采用集成化元件简化外围电路,选用低功耗单片机管理参数。论文的软件设计部分对电能计量芯片结合单片机实现多功能测量的原理进行了阐述,详细介绍了多种电参数的测量方法。同时,总体设计时采用了多种抗干扰技术。经调试本文设计的智能电表实现了多种电参数的测量,在达到高测量精度的基础上同时降低了仪器体积。在可靠性加强之后会得到很好的应用。关键词:智能电表;电能计量芯片Abstract第34页共40页Intelligentammetershavebroughtgreatconveniencetohigh
3、efficientmanageelectricalenergy,sotheygraduallyspreadtothehouseholdofpeoplelives.Thisthesisaimstotheneedsofusersdesignsakingofintelligentammeters,whichcanbeusedtotheprecisionmeasurementofsinglephase,industrialfrequencyelectricalparameter,includecurrent,voltage,frequ
4、ency,activepower,apparentpower,activeenergy,apparentenergyandsoon,andhavedisplayfunction.First,thethesisintroducesthetheoryofelectricalmeasuringandthedevelopmentofinstrumentstechnologies,comparativelyanalyzesthecurrentcommonlyelectronicparametersmeasuringtechnologie
5、sinthemeasurementaccuracy,costandreliability,andthenconfirmsoveralldesignandrealizationoftheprogramunderthetechnicalfeaturesandrequirements.HardwaredesignPartfocusonhowtosimplifycircuit,lowerequipmentcosts,realizemulti-functionalandhigh-Precisionmeasurement.High-per
6、formanceenergymeasurechipisusedtoreplacethetraditionalsamplingcircuittomeasurepower,andmanyotherintegratedcircuitssimplifytheexternalcircuit.Thedesignselectslow-powermicrocontrollerforparametersmanagement.Thethesis’softwaredesignpartexpoundsthemeasureprincipleofthee
7、nergymeasurechipwithmicrocontroller,themethodofmeasuringelectronicparametersindetail.Avarietyofanti-jammingtechnologiesareusedinthemoduledesignatthesametime.Afteradjustment,theintelligentammeterrealizesavarietyofelectricalparametersmeasurement,realizeshigh-precision
8、measurementandreducesthevolumeofequipment.Afterenhancedthereliability,thesystemwillhaveaverygoodapplicationprospect.Keywords:intelligentam