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琴島學院_畢業(yè)論文_簡易數(shù)字電壓表設計(已修改)

2025-06-02 14:40 本頁面
 

【正文】 本科專業(yè)學生畢業(yè)設計(論文) 題 目: 簡易數(shù)字電壓表設計 系 別: 計算機工程 系 專 業(yè): 電子信息工程 年 級: 20xx級 學 號: 姓 名: 指導教師: 青島理工大學琴島學院畢業(yè)設計(論文) I 摘 要 數(shù)字電壓表簡稱 DVM,數(shù)字電壓表基本原理是將輸入的模擬電壓信號轉化為數(shù)字信號,再進行輸出顯示。而 A/D 轉換器的作用是將連續(xù)變化的模擬信號量轉化為離散的數(shù)字信號,其 基本結構是由采樣保持,量化,編碼等幾部分組成。因此 AD 轉換是此次設計的核心元件。輸入的模擬量經(jīng)過 AD 轉換器 轉換,再由驅動器驅動顯示器輸出,便得到測量的數(shù)字電壓。本次設計的作品由于用到的模數(shù)轉換芯片是 ADC0832,設計系統(tǒng)給的供電電壓為 +5伏,能夠測量電壓范圍為 0 到 5 伏之間, 滿足設計要求 。同時設計的精度為小數(shù)點后 兩 位,滿足要求的 兩 位小數(shù)的精度,在不考慮 AD 芯片的量化誤差的前提下,此次設計的精度能夠滿足一般測量的要求。 關鍵詞 : 數(shù)字電壓表;信號; AD 轉換;測量 青島理工大學琴島學院畢業(yè)設計(論文) II Abstract DVM is short for digital display voltmeter, the fundamental of DVM is converting The input analog voltage signal into digital signals,and then show the function of A/D converter is to convert the continuous change of analog signals into discrete digital signals. It es in several partssampling, maintaining, quantization and the AD conversion is the core element of the Input analog will be transformed by AD converter then driven by the drive display output, then get the digital voltage measurement This design work requirement for making digital voltage meter range of 0 to 5 v, due to the use of modulus conversion chip is ADC0832, The voltage of power supplied by design system is+ 5 v,At the same time, It can measure the voltage at the range of 0 to 5 v, and meet the design precision of the design to two decimal places, meet the requirements of the precision of the two decimal places, without considering the AD chip under the premise of quantization error, the accuracy of the design can meet the requirements of general measure. Key words: DVM signals A/D converter measurement. 青島理工大學琴島學院畢業(yè)設計(論文) III 目 錄 第一章 引言 ...................................................................................................................................... 1 課題設計的背景及概述 ........................................................................................................ 1 課題設計方案的選擇 ............................................................................................................ 1 .............................................................................................. 2 A/D轉換芯片構建 ............................................................................. 2 第二章 系統(tǒng)方案設計與論證 ............................................................................................................. 3 .............................................................................................................................. 3 ................................................................................................................... 3 ............................................................................................................ 3 ............................................................................................................ 3 ................................................................................................................... 3 ................................................................................................................... 3 .............................................................................................................................. 4 .......................................................................................................................... 4 第三 章 硬件設計與原理 .................................................................................................................... 5 .......................................................................................................................... 5 單片機最小系統(tǒng) ................................................................................................................... 5 顯示系統(tǒng) ........................................................................................................................... 10 LCD1602的指令說 明及時序 ......................................................................................11 LCD1602的 RAM地址映射及標準字庫表 .................................................................... 13 模數(shù)轉換 ........................................................................................................................... 14 第四章 軟件設計與程序 .................................................................................................................. 16 軟件的組成 ........................................................................................................................ 16 各部分軟件分析 ................................................................................................................. 16 初始化程序 ........................................................................................................... 16 采樣數(shù)據(jù)分離 ,顯示子函數(shù) ..................................................................................... 17 A/D轉換子程序 ..................................
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