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1、哈爾濱工程大學(xué)本科生畢業(yè)論文基于DSP的水聲應(yīng)答系統(tǒng)數(shù)字平臺(tái)的設(shè)計(jì)與實(shí)現(xiàn)院系):信息與通信工程學(xué)院專業(yè):電子信息工程學(xué)號(hào):2008105117學(xué)生姓名:于福建指導(dǎo)教師:田園教授2012年6月隨著水聲技術(shù)的深入發(fā)展,作為一種不可缺少的實(shí)驗(yàn)設(shè)備,水聲應(yīng)答器得到了廣泛的應(yīng)用。水聲應(yīng)答器主要用于實(shí)驗(yàn)冃的,既可作為普通信號(hào)源,又可作為應(yīng)答設(shè)備使用,可實(shí)現(xiàn)對(duì)待測(cè)設(shè)備的測(cè)試與校準(zhǔn)。隨著數(shù)字信號(hào)處理技術(shù)的飛速發(fā)展,針對(duì)數(shù)字信號(hào)處理的專用處理器也在穩(wěn)步更新,特別是在實(shí)時(shí)處理功能上提髙顯著。釆用低功耗高性能的DSP芯片,可以從木質(zhì)上提高水聲應(yīng)答器的處理能力,同時(shí)
2、也
3、能相對(duì)降低成木。本論文的主要工作是:根據(jù)
4、系統(tǒng)的技術(shù)指標(biāo),完成水下應(yīng)答器數(shù)字系統(tǒng)鎖件平臺(tái)的搭建和軟件調(diào)試。硬件方面,系統(tǒng)以數(shù)字信號(hào)處理模塊為核心,輔以語音編解碼模塊、片夕卜SDRAM等。其中,專用處理器采用TI5000系列DSP——TMS20VC5509A。m另外,本文從pcb制板的角度論述了系統(tǒng)設(shè)計(jì)時(shí)■遵循的原則。軟件方仏主要實(shí)現(xiàn)同脈沖信號(hào)的采樣、信號(hào)前沿的檢測(cè)—
5、信號(hào)頻率的測(cè)量。系統(tǒng)可通過軟件的設(shè)定以適應(yīng)不同信號(hào)的應(yīng)答。本系統(tǒng)作為水聲應(yīng)答器的核心部分,■后續(xù)制作完善的水聲應(yīng)答器系統(tǒng)提供了堅(jiān)實(shí)的基礎(chǔ)。關(guān)鍵詞:水下應(yīng)答器:數(shù)字信號(hào)處理;TMS320VC5509A;印刷電路板;ABSTRACTWiththethoroughdeve
6、lopmentofunderwateracoustictechnique,theacoustictransponderhasgotwidespreadapplicationasanindispensableexperimentalequipment.Theacoustictransponderismainlyusedinacousticexperimentstotestandcalibratetheexperimentalequipment.Withtherapiddevelopmentofdigitalsignalprocessingtechnology,thededicatedpro
7、cessorfordigitalsignalprocessingissteadilyupdatedespeciallyinreal-timeprocessing.Byusinglow-powerhigh-performanceDSPchip,wecanessentiallyimprovethehandlingcapacityoftheunderwateracoustictranspondersatlowercosts.Themainworkofthisthesisistocompletethestructuresoftheunderwatertransponderdigitalsyste
8、ms,hardwareplatformsandsoftwaredebugging,accordingtothetechnicalspecificationsofthesystem.Thehardwarehasthedigitalsignalprocessingmoduleasthecore,supplementedbythevoicecodecmoduleandoff-chipSDRAM.ThededicatedprocessorweuseisTFs5000seriesDSP-TMS320VC5509A.Thehardwarerealizestheanalogsignalacquisit
9、ion,signalprocessingandsignaltransmissionfunction.Inaddition,thispaperdiscussesthedesignprinciplesfromthepointofviewofthePCBsystemboard.Thesoftwaremainlyconsistsofthesamplingofpulsesignal,thedetectionofsignalforefrontandthemeasurementofsignalfrequency.Thesystemcanbesettoadapttodifferentsignalresp
10、onsebysoftware.Asacorepartoftheunderwateracoustictransponder,thesystemprovidesasolidfoundationtoproducethecompletewateracoustictranspondersystem.Keywords:underwatertransponder;digitalsignalprocessing;TMS320VC5509A;PCB;