電子秤論文-展示頁
2024-11-14 03:02本頁面
【正文】 sists of 51 singlechip microprocessor control improved version 52, the LCD displays that object automatically. Its ponents are measuring circuit, differential amplifiers, A/d conversion, the microputer control circuit, show circuit. The measuring circuit using resistance strain the weight of the device object into the appropriate signals to the size of the electrical signals through the differential amplifier will signal amplification to AD chip can identify scope so that they could be an electrical signal into a digital signal corresponding to the handle to the SCM in the LCD display that the weight of the object, the system automatically by software implementation. Through debugging, and testing, system performance parameters basic design index.Keywords: Weighing sensors cell differential amplifier module(A /D)converter 1602 LCD MCU Automatic shift.一、設計任務與要求1．設計一個數(shù)字電子秤，測量范圍分成四檔，0～、0～、0～、0～1999Kg。經(jīng)調(diào)試和測試，系統(tǒng)各項性能參數(shù)基本達到設計指標。其電路構(gòu)成主要有測量電路，差動放大電路，A/D轉(zhuǎn)換，單片機控制電路、顯示電路。目 錄摘要一、設計任務與要求 二、方案設計與論證 三、電子元器件的選取(A/D)芯片的選取四、各硬件模塊的具體實現(xiàn)方案 電源原理 電源電路圖 4．2. 1電阻應變式稱重傳感器原理 、差動放大電路 、A/D轉(zhuǎn)換 A/D轉(zhuǎn)換器的選擇 TLC2543主要性能參數(shù) TLC2543封裝形式及各管腳功能 實際硬件電路連接圖五、系統(tǒng)軟件設計六、系統(tǒng)調(diào)試 6．1調(diào)試過程 七、系統(tǒng)功能八、實際總結(jié)九、參考文獻
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