不使用單片機(jī)的超聲波測(cè)距(純數(shù)字電路完成的)(已修改)
2025-07-11 09:26 本頁(yè)面
【正文】 成 都 信 息 工 程 學(xué) 院氣 象 電 子 綜 合 設(shè) 計(jì) 報(bào) 告超聲波測(cè)距雷達(dá)設(shè)計(jì)超聲波測(cè)距雷達(dá)設(shè)計(jì)摘 要該設(shè)計(jì)是采用兩級(jí) NE555 產(chǎn)生足夠頻率與強(qiáng)度的脈沖信號(hào)由超聲波發(fā)射探頭發(fā)射，脈沖信號(hào)遇到障礙物返回，返回信號(hào)由超聲波接收探頭接收后通過(guò)兩級(jí)放大，檢波電路檢波。而從發(fā)射到接收到信號(hào)過(guò)程所經(jīng)歷的時(shí)間再乘以波速即為距障礙物兩倍的距離。再將得到的距離值顯示在數(shù)碼管上。關(guān)鍵詞：超聲波發(fā)射接收；信號(hào)放大；數(shù)碼管顯示AbstractThe design is by the two stage NE555 generate enough frequency and intensity of the pulse signal from the ultrasonic transmitting probe launch. Pulse signal meets the obstacle return signal from the ultrasonic receiving probe after receiving through two stages of amplification, demodulation circuit transmitting to receiving signal process time multiplied by the velocity is two times the distance from obstacles. The distance values in the digital tube display.Key words: ultrasonic emission receiver。 signal amplification。 digital tube display目 錄1 項(xiàng)目計(jì)劃 ...................................................................................................................................................1 引言 ....................................................................................................................................................1 項(xiàng)目描述 ............................................................................................................................................1 項(xiàng)目執(zhí)行計(jì)劃 ....................................................................................................................................12 設(shè)計(jì)說(shuō)明 ...................................................................................................................................................2 設(shè)計(jì)的系統(tǒng)框圖 ................................................................................................................................2 各單元模塊設(shè)計(jì)原理 ........................................................................................................................2 超聲波產(chǎn)生電路 .........................................................................................................................2 載波發(fā)生器 .................................................................................................................................3 發(fā)射驅(qū)動(dòng)電路 ......................................................................................
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