模擬信號數(shù)字無線傳輸系統(tǒng)的設(shè)計(jì)-展示頁
2025-06-17 08:06本頁面
【正文】 ........................................................................ 2 2 設(shè)計(jì)任務(wù)與要求 .................................................................................................... 2 設(shè)計(jì)任務(wù) ......................................................... ............................................. 2 基本要求 .................................................................................................... 3 3 總體方案設(shè)計(jì)與方案論證 ................................................................................. ... 3 總體方案設(shè)計(jì) ............................................................................................... 3 方案論證與選擇 .......................................................................................... 4 無線傳輸方式的選擇 ........................................................................ 4 模數(shù)轉(zhuǎn)換 ............................................................................................ 4 4 硬件電路與軟件設(shè)計(jì)的實(shí)現(xiàn) ...................................................................... ........ 8 硬件電路的實(shí)現(xiàn) ........................................................................................ 8 控制處理器外圍電路 ...................................................................... 10 紅外發(fā)射電路的實(shí)現(xiàn) ...................................................................... 10 模數(shù)轉(zhuǎn)換電路的實(shí)現(xiàn) ...................................................................... 10 軟件設(shè)計(jì) .................................................................................................... 11 發(fā)射機(jī)軟件設(shè)計(jì) .............................................................................. 11 5 系統(tǒng)調(diào)試與調(diào)試中的問題 .................................................................................. 12 模數(shù)轉(zhuǎn)換的調(diào)試 ........................................................................................ 12 紅外發(fā)射接收的調(diào)試 ................................................................................ 12 參考文獻(xiàn) ...................................................................................................... ............ 13 附 錄 ........................................................................................................................ 13 附錄 1 發(fā)射機(jī)程序 ................................................................................ 13 1 模擬信號數(shù)字無線傳 輸系統(tǒng)的設(shè)計(jì) 摘 要 通信系統(tǒng)分為模擬通信系統(tǒng)和數(shù)字通信系統(tǒng)，如果我們在發(fā)送端的信息源中包括一個(gè)模 /數(shù)轉(zhuǎn)換裝臵，在接收端包括一個(gè)數(shù) /模轉(zhuǎn)換裝臵，在發(fā)送端與接收端之間通過紅外作為載波進(jìn)行通信，則可以實(shí)現(xiàn)模擬信號數(shù)字無線傳輸。本文主要從三個(gè)方面進(jìn)行設(shè)計(jì)與實(shí)現(xiàn)：（ 1） AT89S51 單片機(jī)對 A/D 轉(zhuǎn)換器的控制，從而對模擬信號進(jìn)行抽樣、量化、編碼后轉(zhuǎn)換為數(shù)字信號；（ 2）單片機(jī)對數(shù)字信號進(jìn)行編碼與 38Khz紅外載波調(diào)制通過紅外線發(fā)射；（ 3）接收機(jī)接收到的調(diào)制信號經(jīng)紅外接收頭進(jìn)行解調(diào)還原數(shù)字信號，再經(jīng)單片機(jī)的處理，通 過 D/A，以及信號的放大，最后再經(jīng)過低通濾波器還原成模擬信號，從而實(shí)現(xiàn)模擬信號數(shù)字無線傳輸演示的全過程。s information sources include a A / D converter, the receiver includes a D / A converter, in be
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