基于單片機(jī)的超聲波測距系統(tǒng)的設(shè)計(jì)

電子機(jī)電論文編號:JD841  論文字?jǐn)?shù):6071,頁數(shù):15

基于單片機(jī)的超聲波測距系統(tǒng)的設(shè)計(jì)

目錄
摘  要 I
Abstract I
引言 1
1 設(shè)計(jì)思路 1
2 超聲波測距系統(tǒng)的工作原理 2
3 硬件電路設(shè)計(jì)及模塊電路分析 2
3.1發(fā)射和接收模塊 2
3.1.1 壓電式超聲波發(fā)生器原理 2
3.1.2 超聲波測距原理 3
3.1.3 脈沖產(chǎn)生電路 3
3.1.4 超聲波的接收與處理 4
3.1.5 鎖相環(huán)電路 4
3.2 單片機(jī)MC—51模塊 5
3.3 顯示模塊 6
3.4 總體電路設(shè)計(jì) 6
4 超聲波測距電路程序設(shè)計(jì) 7
4.1 40kHz 脈沖的產(chǎn)生與超聲波發(fā)射 7
4.2 超聲波的接收與處理 7
4.3 計(jì)算超聲波傳播時(shí)間 8
4.4 計(jì)算距離 9
4.5 顯示電路 9
4.6 超聲波測距系統(tǒng)的程序框圖 10
5 結(jié)束語 11
參考文獻(xiàn) 12
謝   辭 13

摘  要：設(shè)計(jì)了一種基于8051單片機(jī)的超聲波測距系統(tǒng)。介紹了超聲波測距的原理及8051單片機(jī)的性能和特點(diǎn)，并在此基礎(chǔ)上，給出了實(shí)現(xiàn)超聲波測距方案的系統(tǒng)框圖及軟、硬件設(shè)計(jì)。超聲波指向性強(qiáng)，能量消耗緩慢，在介質(zhì)中傳播距離遠(yuǎn)，常用于距離的測量。利用超聲波檢測距離，設(shè)計(jì)比較方便，計(jì)算處理也較簡單，且在測量精度方面也能達(dá)到要求。測試結(jié)果表明，該設(shè)計(jì)滿足設(shè)計(jì)要求，具有一定的實(shí)用價(jià)值。
關(guān)鍵詞：超聲波；8051單片機(jī)；測距

Ultrasonic Distance Measurement Based on
 Single-Chip Design
Abstract: The ultrasonic ranging system based on a 8051 single-chip is designed. The principle of ultrasonic distance measurement and the 8051 performance and features are introduced. Based on the principle , the design gives us the system block diagram of the program and the software and hardware design to implement ultrasonic distance measurement. The supersonic wave uses to measure distance because of its strong point, slow energy consumption, and far distance spread. From the use of ultrasonic testing, both the design and the calculation are more convenient and the simple and in the measurement accuracy can also meet the requirement. The design satisfies the request and has certain practical value, such as strong antijamming ability and good timeliness.
Keywords: supersonic wave;8051;measure distance