基于AT89S52單片機(jī)的高精度超聲測(cè)距系統(tǒng)研究

目 錄

摘 要 4
關(guān)鍵詞 4
Abstracte. 5
Key words 5
引言 6
1 系統(tǒng)設(shè)計(jì)思路 6
1.1 超聲波測(cè)距原理 6
1.2 超聲波測(cè)距的結(jié)構(gòu)及工作過(guò)程 7
2 硬件設(shè)計(jì) 8
2.1 整體電路 9
2.2 超聲波發(fā)射電路 10
2.3 超聲波接收電路 10
2.4 I/O模塊 11
2.4.1 顯示模塊 11
2.4.2 單片機(jī)最小系統(tǒng) 12
2.4.3 溫度補(bǔ)償電路 12
    2.4.4
    2.4.5
3 軟件設(shè)計(jì) 13
3.1 主程序 13
3.2 超聲波接收中斷程序 14
4 實(shí)驗(yàn)仿真 14
5 結(jié)論 15
參考文獻(xiàn) 15
致 謝 16
附 錄 18

 
摘 要：基于低成本、高精度的目的提出了一種超聲波測(cè)距系統(tǒng)的設(shè)計(jì)方案。設(shè)計(jì)采用AT89S52單片機(jī)作為主控MCU，軟件部分采用模塊化設(shè)計(jì)，由主程序、發(fā)射子程序、接收子程序、定時(shí)子程序、顯示子程序等組成。本文在分析了超聲波測(cè)距原理的基礎(chǔ)上指出了設(shè)計(jì)測(cè)距系統(tǒng)的思路和所需考慮的問(wèn)題，給出了實(shí)現(xiàn)超聲波測(cè)距方案的軟、硬件設(shè)計(jì)系統(tǒng)框圖。在設(shè)計(jì)中兼顧了系統(tǒng)性能和器件成本的關(guān)系，降低了整套系統(tǒng)的成本。實(shí)驗(yàn)表明此系統(tǒng)具有高的測(cè)量精度和實(shí)際使用價(jià)值。
關(guān)鍵詞：?jiǎn)纹瑱C(jī)；AT89S52；超聲波傳感器；測(cè)距

Research of High Precision Ultrasonic Ranging System Based on the AT89S52

Abstract: Based on the purposes of low-cost and high accuracy, a ultrasonic distance measurement is designed.This design use the AT89S52 as the master MCU, and the software part use modular design, it composes of the main program, subroutine launch, receive routine, regular routines, display routines and other components.Based on the analysis on the principle of ultrasonic distance measurement design, this title show the ideas and issues need to be considered, and give the ultrasonic ranging program of software and hardware design block.Taken into the consideration in the design of system performance and the relationship between the cost of the device, this design reduces the cost of the entire system.Experiments show that this system has high accuracy and practical value.
Key words: MCU; AT89S52; ultrasonic sensor; distance measurement