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1、2012年第31卷第8期傳感器與微系統(tǒng)(TransducerandMicrosystemTechnologies)107*基于MSP430的仿生偏振光導(dǎo)航傳感器的設(shè)計(jì)與實(shí)現(xiàn)褚金奎,林林,陳文靜,王寅龍(大連理工大學(xué)精密特種加工教育部重點(diǎn)實(shí)驗(yàn)室,遼寧大連116023)摘要:根據(jù)沙漠螞蟻Cataglyphis的導(dǎo)航機(jī)理,采用分段導(dǎo)航算法研制了以MSP430為控制核心的偏振光導(dǎo)航傳感器。該傳感器利用分段算法通過變化明顯的兩路電壓信號(hào)計(jì)算導(dǎo)航角,分辨率高,采用混合信號(hào)處理器降低傳感器功耗,無線通信方式增加了信號(hào)傳輸距離和靈
2、活性,方便應(yīng)用。分析了傳感器導(dǎo)航機(jī)理和分段導(dǎo)航算法;設(shè)計(jì)傳感器的硬件電路和軟件程序,制作傳感器樣機(jī);為了測(cè)試傳感器的性能,在標(biāo)定平臺(tái)上進(jìn)行了實(shí)驗(yàn),并處理實(shí)驗(yàn)數(shù)據(jù),得出傳感器原始誤差在±0.6°以內(nèi),誤差補(bǔ)償后導(dǎo)航精度在±0.2°以內(nèi)。實(shí)驗(yàn)證實(shí):偏振光傳感器自主導(dǎo)航,精度高,性能穩(wěn)定,在導(dǎo)航系統(tǒng)中有廣泛的應(yīng)用前景。關(guān)鍵詞:仿生;偏振光;傳感器;導(dǎo)航;MSP430中圖分類號(hào):TP394.1;TH691.9文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000—9787(2012)08—0107—04Designandrealizationo
3、fbionicpolarizedlight*navigationsensorbasedonMSP430CHUJin-kui,LINLin,CHENWen-jing,WANGYin-long(KeyLaboratoryofTechnologyPrecision&Non-traditionalMachiningofMinistryofEducation,DalianUniversityofTechnology,Dalian116023,China)Abstract:AccordingtothedesertantsCat
4、aglyphisnavigationmechanism,subsectionnavigationalgorithmisusedtoresearchthepolarizedlightnavigationsensorusingMSP430ascontrolcore.Thesensorusestwovoltagesignalsofvariationtocalculatenavigationanglethroughsubsectionalgorithm,ithashighresolution,themixedsignalp
5、rocessorisusedtoreducepowerconsumptionofthesensor,wirelesscommunicationmodeincreasessignaltransmissiondistanceandflexibility,itisconvenienttoapply.Thesensornavigationmechanismandsubsectionnavigationalgorithmareanalyzed.Thesensorhardwarecircuitandsoftwareprogra
6、maredesigned,andthesensorprototypeismade.Inordertotesttheperformanceofthesensor,experimentsarecarriedoutonthecalibratingplatform,theoriginalerrorofthesensoriswithin0.6°,aftercompensation,navigationprecisoniswithin0.2°.Theexperimentverifiesthatthepolarizedlight
7、sensornavigatesindependently,ithashighprecisionandworksstablyandhasbroadapplicationprospectinnavigationsystem.Keywords:bionic;polarizedlight;sensor;navigation;MSP4300引言Cataglyphis腦部POL神經(jīng)元將復(fù)眼接收的天空偏振光信號(hào)[2]大自然蘊(yùn)藏著大量的智慧和能量,人們向自然界學(xué)習(xí)轉(zhuǎn)換成相應(yīng)的電信號(hào)進(jìn)而導(dǎo)航。除了沙蟻,自然界中很的理念也逐步提升。近
8、年來,許多科研工作者展開了對(duì)自多昆蟲的遷移、覓食都是利用天空偏振光導(dǎo)航,例如:蜘蛛[3]然界的研究探索,人工智能、仿生學(xué)、仿生機(jī)器人等研究越利用二階眼結(jié)構(gòu)過濾偏振光信息找到回巢穴的方向,來越受社會(huì)關(guān)注。這些研究最終目的就是為了探索千萬年KinoshitaM等人研究分析了沙漠蝗蟲的腦神經(jīng)的光譜特性[4]演變后的自然界,并將研究成果運(yùn)用到生產(chǎn)和生活中。反應(yīng)與外界