【正文】 速表與光標紙的距離控制在很近的范圍，測量十分不方便。 轉速測量的方法很多，測量儀表的型式也多種多樣，其使用條件和測量精度也各不相同。在測量范圍和測量精度方面都有極大的提高。 選題目的和意義 隨著超大規(guī)模集成電 路技術的提高，尤其是單片機應用技術以其功能強大，價格低廉的顯著特點，使全數(shù)字化測量轉速系統(tǒng)得以廣泛應用。測量轉速的方法分為模擬式和數(shù)字式兩種。 關鍵詞：單片機；霍爾傳感器；轉速測量 重慶文理學院本科生畢業(yè)論文 (設計 ) 英文摘要 Ⅱ Abstract In the production process, the motor speed is necessary for accurate measurements. This system to A3144 hall sensor for speed signal collection， AT89C51 microcontroller as the main controller for speed measurement， using realtime LCD1602 LCD display, and through the buttons to speed settings and adjustments . The system has a frequency response fast, antiinterference ability, the use of pulse counting method to achieve a measure of speed, through the LCD accurate and directviewing showing motor speed value. Has the very good application value. Keywords: Singlechip microputer。 Electrical Engineering Chongqing University of Arts and Sciences November,2021 重慶文理學院本科生畢業(yè)論文 (設計 ) 目錄 目錄 摘要 .......................................................................................................................................... Ⅰ Abstract..................................................................................................................................... Ⅱ 1 引言 ......................................................................................................................................... 1 選題目的和意義 ........................................................................................................... 1 國內外研究現(xiàn)狀綜述 ................................................................................................... 1 2 系統(tǒng)總體設計 ......................................................................................................................... 2 系統(tǒng)設計要求 .............................................................................................................. 2 系統(tǒng)設計思想 .............................................................................................................. 2 設計要完成的任務 ....................................................................................................... 2 3 設計方案論證與選擇 ............................................................................................................ 2 傳感器的選擇 .............................................................................................................. 2 單片機的選擇 ............................................................................................................... 3 顯示模塊的選擇 .......................................................................................................... 3 4 各部分器件介紹 ..................................................................................................................... 3 AT89C51 單片機 ........................................................................................................... 3 主要特性： ........................................................................................................ 4 管腳說明 ............................................................................................................ 5 振蕩器特性 ......................................................................................................... 6 芯片擦除 ............................................................................................................. 6 霍爾元件 ....................................................................................................................... 7 霍爾傳感器測量原理 ......................................................................................... 8 轉速測量方法 ..................................................................................................... 8 LCD1602 ....................................................................................................................... 8 LCD1602 簡介 .................................................................................................... 8 LCD1602 的基本參數(shù)及引腳功能 .................................................................... 9 蜂鳴器 ......................................................................................................................... 11 5 軟件設計 ............................................................................................................................... 12 設計思想 ..................................................................................................................... 12 總體設計流程 ............................................................................................................. 12 6 仿真與調試 ........................................................................................................................... 13 Keil 軟件簡介 ............................................................................................................. 13 Proteus 軟件簡介 ....................................