數(shù)字交流毫伏表的設(shè)計(jì)_畢業(yè)設(shè)計(jì)論文-展示頁(yè)
2024-09-07 13:46本頁(yè)面
【正文】 、多參數(shù)、高精度、高速度方面發(fā)展，另一個(gè)是向?qū)嵱没?、小型化、?shù)字化、廉價(jià)的通用或單一用途方面發(fā)展。本次的畢業(yè)設(shè)計(jì)課題為數(shù)字交流毫伏表，其顯著特點(diǎn)是測(cè)量范圍寬，可以實(shí)現(xiàn)量程自動(dòng)轉(zhuǎn)換，操作簡(jiǎn)單，使用方便。這樣各單元電路的功能明確，之間的界限清楚，便于調(diào)試。 關(guān)鍵 詞 ： 數(shù)字交流毫伏表 測(cè)量 轉(zhuǎn)換 2 畢業(yè)設(shè)計(jì)（論文）外文摘要 Title: Digital Ac mV the design table The design of digital AC mV meter Abstract: With the continued development of electronic technologies, the development of electronic equipment is also impressive. Overall, there are two directions of the development of electronic equipment trends: First, the multipurpose, multiparameter, highprecision, highspeed development and the other to practical technology, miniaturization, digital, single use cheap generic or development. For digital voltage table, on the other hand tend to be bined in a digital micrometer, on the other hand tend to be userfriendly, small inexpensive singleuse voltage table. This graduation project topic for a digital exchange micrometer, its remarkable characteristic is surveys the scope widely, may realize the measuring range automatic switching, the operation is simple, easy to operate. This voltmeter also has in the survey scope which decides the measuring range automatic selection in the best position function, thus may fast, be convenient, accurately survey the voltage, I has used the modular design method in the design, first putting in order machine will divide into the different function module, the reengineering realization partial function unit electric circuit. Like this various units electric circuit function is clear about, the between boundary is clear, is advantageous for the debugging. This article to input the channel the design, the inverting amplifier design, AC/DC transforms the partial designs, the measuring range automatic switching electric circuit design has 3 made the detailed introduction. Keywords : Digital exchange micrometer measurement conversion 4 目 錄 1． 引言 7 主要設(shè)計(jì)工具的介紹 7 PROTEL99 簡(jiǎn)介 7 3. 工作原理 9 本設(shè)計(jì)數(shù)字電壓表的工作原理 9 單元電路的原理及設(shè)計(jì) 10 輸入通道的設(shè)計(jì) 11 AC/DC 轉(zhuǎn)換部分的設(shè)計(jì) 12 量程自動(dòng)轉(zhuǎn)換電路的設(shè)計(jì) 22 整機(jī)的組裝 22 調(diào)試 22 校驗(yàn) 22 改進(jìn)方案 23 結(jié)論 24 心得體會(huì) 其中，電壓量的測(cè)量最為經(jīng)常。另外，由于數(shù)字式儀器具有讀數(shù)準(zhǔn)確方便、精度高、誤差小、靈敏度和分辨率高、測(cè)量速度快等特點(diǎn)而倍受用戶(hù)青睞，數(shù)字式交流毫伏表就是基于這種需求而發(fā)展起來(lái)的。總的來(lái)說(shuō)，電子儀器有兩個(gè)方向的發(fā)展趨勢(shì)：一是向多功能、多參數(shù)、高精度、高速度方面發(fā)展，另一個(gè)是向?qū)嵱没⑿⌒突?、?shù)字化、廉價(jià)的通用或單一用途方面發(fā)展。 本文所研制的數(shù)字式交流毫伏表的顯著特點(diǎn)是測(cè)量范圍寬，可測(cè)電壓范圍為500V 以下，最大分辨率為 ，且可以實(shí)現(xiàn)量程自動(dòng)轉(zhuǎn)換，操作簡(jiǎn)單，使用方便。 6 2 設(shè)計(jì)工具的簡(jiǎn)介 PROTEL99 簡(jiǎn)介 本次畢業(yè)設(shè)計(jì)主要是印制電路板（簡(jiǎn)稱(chēng) PCB 板）的設(shè)計(jì)，采用的是 Protel 99SE。 Protel 99 SE 這套電路設(shè)計(jì)軟件，主要包括四部分： Schematic99 SE、 SIM99SE、 PLD99SE、 PCB99SE、 PCB99CE。 繪制 PCB 時(shí)的注意事項(xiàng) 從焊接面看，組件的排列方位盡可能保持與原理圖相一致布線(xiàn)方向最好與電路圖走線(xiàn)一致。 ，分布要合理和均勻，力求整齊美觀(guān)，結(jié)構(gòu)嚴(yán)謹(jǐn)?shù)墓に囈蟆? (2)豎放 ：放電路的組件數(shù)較多，而且電路板尺寸不大的
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