畢業(yè)論文 超聲波測距系統(tǒng).rar
畢業(yè)論文 超聲波測距系統(tǒng),摘要在日常生產(chǎn)生活中，很多場合如汽車倒車、機器人避障、工業(yè)測井、水庫液位測量等需要自動進行非接觸測距。超聲波是指頻率大于20 khz的在彈性介質(zhì)中產(chǎn)生的機械震蕩波，其具有指向性強、能量消耗緩慢、傳播距離相對較遠等特點，因此常被用于非接觸測距。由于超聲波對光線、色彩和電磁場不敏感，因此超聲波測距對環(huán)境有較好的適應(yīng)能力，此...
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摘 要
在日常生產(chǎn)生活中，很多場合如汽車倒車、機器人避障、工業(yè)測井、水庫液位測量等需要自動進行非接觸測距。超聲波是指頻率大于20 kHz的在彈性介質(zhì)中產(chǎn)生的機械震蕩波，其具有指向性強、能量消耗緩慢、傳播距離相對較遠等特點，因此常被用于非接觸測距。由于超聲波對光線、色彩和電磁場不敏感，因此超聲波測距對環(huán)境有較好的適應(yīng)能力，此外超聲波測量在實時、精度、價格也能得到很好的折衷。
為此，嘗試以單片機AT89S51為核心，利用CXA20106A超聲波芯片設(shè)計一款體積較小、價格低廉、精度較高、具有溫度補償、實時LCD顯示和報警的超聲波測距儀。
關(guān)鍵詞：單片機；超聲波；C語言
Ultrasonic ranging systemAbstract
Abstract
In daily life, many occasions such as car backing up, robot obstacle avoidance, industrial logging, reservoir level measurement and need to be automatic no contact ranging. Ultrasonic is to point to more than 20 kHz frequency in the elastic medium produced in mechanical shock waves, it has the directionality of strong, energy consumption is relatively slow, the transmission distance far and other characteristics, so is often used to non-contact ranging. Due to the light, colour and ultrasonic not sensitive electromagnetic field, so the ultrasonic ranging to environment has good adaptability, in addition the ultrasonic measure in real time, the precision and the price to also can get a good compromise.
Therefore, this paper try to monolithic integrated circuit AT89S52 as the core, use CXA20106A ultrasound sensor design a small size, low cost, high accuracy, temperature compensation, with real-time LCD display and alarm of ultrasonic ranger.
Key Words：LCD; Single-chip microcomputer ; Ultrasonic ranging systemAbstract; C Language
目 錄
摘 要 I
Abstract II
引 言 1
1 超聲波簡介..................................................................................................................2
2 系統(tǒng)功能設(shè)計.............................................................................................................3
2.1 超聲波測距系統(tǒng)的基本原理...............................................................................3
2.2 AT89S51芯片超聲波簡介...................................................................................4
2.3 AT89S51芯片的引腳結(jié)構(gòu)...................................................................................4
3 硬件設(shè)計.....................................................................................................................5
3.1 硬件電路主控...........................................................................................................5
3.2 復(fù)位電路....................................................................................................................5
3.3顯示電路......................................................................................................................6
3.4驅(qū)動電路.......................................................................................................................7
3.5接口電路.......................................................................................................................8
3.6 時鐘模塊......................................................................................................................8
4 軟件設(shè)計........................................................................................................................11
4.1 程序流程設(shè)計............................................................................................................11
4.2 延時程序.....................................................................................................................14
4.3 中斷系統(tǒng)......................................................................................................................14
4.4 完整程序設(shè)計.........................................................................................................16
5 系統(tǒng)仿真、制作、調(diào)試.......................................................................................32
5.1 系統(tǒng)總體仿真.........................................................................................................32
5.2 硬件電路制作.........................................................................................................34
結(jié) 論 35
參 考 文 獻 36
致 謝 37
在日常生產(chǎn)生活中，很多場合如汽車倒車、機器人避障、工業(yè)測井、水庫液位測量等需要自動進行非接觸測距。超聲波是指頻率大于20 kHz的在彈性介質(zhì)中產(chǎn)生的機械震蕩波，其具有指向性強、能量消耗緩慢、傳播距離相對較遠等特點，因此常被用于非接觸測距。由于超聲波對光線、色彩和電磁場不敏感，因此超聲波測距對環(huán)境有較好的適應(yīng)能力，此外超聲波測量在實時、精度、價格也能得到很好的折衷。
為此，嘗試以單片機AT89S51為核心，利用CXA20106A超聲波芯片設(shè)計一款體積較小、價格低廉、精度較高、具有溫度補償、實時LCD顯示和報警的超聲波測距儀。
關(guān)鍵詞：單片機；超聲波；C語言
Ultrasonic ranging systemAbstract
Abstract
In daily life, many occasions such as car backing up, robot obstacle avoidance, industrial logging, reservoir level measurement and need to be automatic no contact ranging. Ultrasonic is to point to more than 20 kHz frequency in the elastic medium produced in mechanical shock waves, it has the directionality of strong, energy consumption is relatively slow, the transmission distance far and other characteristics, so is often used to non-contact ranging. Due to the light, colour and ultrasonic not sensitive electromagnetic field, so the ultrasonic ranging to environment has good adaptability, in addition the ultrasonic measure in real time, the precision and the price to also can get a good compromise.
Therefore, this paper try to monolithic integrated circuit AT89S52 as the core, use CXA20106A ultrasound sensor design a small size, low cost, high accuracy, temperature compensation, with real-time LCD display and alarm of ultrasonic ranger.
Key Words：LCD; Single-chip microcomputer ; Ultrasonic ranging systemAbstract; C Language
目 錄
摘 要 I
Abstract II
引 言 1
1 超聲波簡介..................................................................................................................2
2 系統(tǒng)功能設(shè)計.............................................................................................................3
2.1 超聲波測距系統(tǒng)的基本原理...............................................................................3
2.2 AT89S51芯片超聲波簡介...................................................................................4
2.3 AT89S51芯片的引腳結(jié)構(gòu)...................................................................................4
3 硬件設(shè)計.....................................................................................................................5
3.1 硬件電路主控...........................................................................................................5
3.2 復(fù)位電路....................................................................................................................5
3.3顯示電路......................................................................................................................6
3.4驅(qū)動電路.......................................................................................................................7
3.5接口電路.......................................................................................................................8
3.6 時鐘模塊......................................................................................................................8
4 軟件設(shè)計........................................................................................................................11
4.1 程序流程設(shè)計............................................................................................................11
4.2 延時程序.....................................................................................................................14
4.3 中斷系統(tǒng)......................................................................................................................14
4.4 完整程序設(shè)計.........................................................................................................16
5 系統(tǒng)仿真、制作、調(diào)試.......................................................................................32
5.1 系統(tǒng)總體仿真.........................................................................................................32
5.2 硬件電路制作.........................................................................................................34
結(jié) 論 35
參 考 文 獻 36
致 謝 37
