【正文】 對(duì)答辯問(wèn)題的反應(yīng)、理解、表達(dá)情況□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格學(xué)生答辯過(guò)程中的精神狀態(tài)□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格二、論文（設(shè)計(jì)）質(zhì)量論文（設(shè)計(jì)）的整體結(jié)構(gòu)是否符合撰寫(xiě)規(guī)范？□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格是否完成指定的論文（設(shè)計(jì)）任務(wù)（包括裝訂及附件）？□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格三、論文（設(shè)計(jì)）水平論文（設(shè)計(jì)）的理論意義或?qū)鉀Q實(shí)際問(wèn)題的指導(dǎo)意義□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格論文的觀念是否有新意？設(shè)計(jì)是否有創(chuàng)意？□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格論文（設(shè)計(jì)說(shuō)明書(shū)）所體現(xiàn)的整體水平□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格評(píng)定成績(jī)：□ 優(yōu) □ 良 □ 中 □ 及格 □ 不及格（在所選等級(jí)前的□內(nèi)畫(huà)“√”）教研室主任（或答辯小組組長(zhǎng)）： （簽名）年 月 日目 錄摘要 ....................................................................................................................................IABSTRACT.....................................................................................................................II1 電能計(jì)量基本概念 .......................................................................................................1 電能計(jì)量裝置 .........................................................................................................1 計(jì)量電路部分 .........................................................................................................22 電子式電能表 ...............................................................................................................5 電子式電能表的發(fā)展史 .........................................................................................5 電子式電能表的一般結(jié)構(gòu)與原理 .........................................................................5 電子式電能表的功能與分類 .................................................................................6 電子式電能表的功能 .......................................................................................6 電子式電能表的分類 ......................................................................................8 各種電能表的比較 ..................................................................................................83 單相電子式電能表的硬件設(shè)計(jì) .................................................................................10 電子式電能表的硬件框圖及結(jié)構(gòu) ........................................................................10 電源電路部分 .................................................................................................10 輸入變換電路 .................................................................................................11 乘法器電路 .....................................................................................................13 電壓／頻率轉(zhuǎn)換器 .........................................................................................19 分頻計(jì)數(shù)器 .....................................................................................................20 電源電路部分 .......................................................................................................21 通訊部分 ...............................................................................................................24 MCU 及其它相關(guān)部分 ..........................................................................................254 單相電子式電能表的軟件設(shè)計(jì) .................................................................................27 電能表的軟件系統(tǒng)結(jié)構(gòu)框圖 ...............................................................................27 電能表的程序流程圖 ...........................................................................................29畢業(yè)設(shè)計(jì)小結(jié) .................................................................................................................31參考文獻(xiàn) .........................................................................................................................32致謝 .................................................................................................................................33附錄一（電路圖） .........................................................................................................34教學(xué)系意見(jiàn)：系主任： （簽名）年 月 日附錄二（程序） .............................................................................................................351 電能計(jì)量基本概念電能是國(guó)民經(jīng)濟(jì)、工業(yè)、商業(yè)等人民生活的重要二次能源，電能可以方便地轉(zhuǎn)化為其他形式的能量。本人完全意識(shí)到本聲明的法律后果由本人承擔(dān)。作 者 簽 名：　　 　 　　 日　 期：　　 　 　　 指導(dǎo)教師簽名：　　 　 　　 日 　　期：　　 　 　　 使用授權(quán)說(shuō)明本人完全了解 大學(xué)關(guān)于收集、保存、使用畢業(yè)設(shè)計(jì)（論文）的規(guī)定，即：按照學(xué)校要求提交畢業(yè)設(shè)計(jì)（論文）的印刷本和電子版本；學(xué)校有權(quán)保存畢業(yè)設(shè)計(jì)（論文）的印刷本和電子版，并提供目錄檢索與閱覽服務(wù)；學(xué)?？梢圆捎糜坝?、縮印、數(shù)字化或其它復(fù)制手段保存論文；在不以贏利為目的前提下，學(xué)?？梢怨颊撐牡牟糠只蛉?jī)?nèi)容。s life as an important secondary energy, power in modern society is monly used, so energy metering device in hair, offer, electricity position is very important. Electricity measurement device is more important, the special power as measurement watthours meter, has since birth history of over 100 years. Watthour meter in power management with instruments of very large proportion, its capability directly affects the efficiency of power management and scientific and cultural level. More than 100 years, along with the power system, all based on the power for the development of power industry and power management system, perfecting the structure and properties of the meter has experienced constantly updated, optimizing the process of development. As a special measuring electric power meter its capability directly affects the efficiency of power management, to make electricity measurement instruments to adapt to industrial modernization and power management modernization rapid development needs) phase watthour meter arises at the historic moment.This design singlephase electronic watthour meter has electricity meters, surveillance, control, management four function, due to internal no mechanical friction and high accuracy, high sensitivity, easy to realize automatic measurement, can be realized with RS 485 distance munication. This design is muti_function singlephase) phase watthour meter can acquisition calculation voltage, current, power, reactive power meritorious there in watthour meter ontology, LCD monitor and display the collection and calculation of the data。本設(shè)計(jì)的單相電子電能表具有用電計(jì)量、監(jiān)視、控制、管理四大功能，由于內(nèi)部無(wú)機(jī)械摩擦而準(zhǔn)確