Dab tsi wavelength ntawm Laser siv nyob rau hauv ib lub tsheb -mounted Lidar System?

1. Taw qhia: Lub luag haujlwm tseem ceeb ntawm Wavelength

Lub Teeb Pom Kev thiab Kev Ruaj Ntseg (LiDAR) tau tshwm sim los ua lub hauv paus ntawm lub hauv paus sensor rau kev tsav tsheb, tsim siab - daws teeb meem, peb- daim duab qhia qhov chaw ntawm ib puag ncig los ntawm kev ntsuas lub sij hawm- ntawm - davhlau (ToF) lossis theem hloov ntawm kev cuam tshuam laser pulses. Hauv plawv ntawm cov thev naus laus zis no yog qhov tseem ceeb, tab sis feem ntau tsis pom zoo, xaiv: lub laser lub wavelength.

Muab tso rau hauv lub infrared spectrum, pom tsis tau rau tib neeg lub qhov muag, qhov kev xaiv wavelength tsis yog arbitrary. Nws ua haujlwm tseem ceeb ntawm LiDAR system'sqhov muag kev nyab xeeb, siab tshaj plaws nrhiav tau ntau yam, resilience rau ib puag ncig cuam tshuam, thiab thaum kawg, nws cov nqi thiab scalability. 

2. Nkag mus tob rau hauv txoj hauv kev tshaj lij thev naus laus zis

2.1 905 nm Wavelength: Tus Neeg Ua Haujlwm thiab Kev Loj Hlob

Lub 905 nm wavelength tau ua haujlwm ntawm kev lag luam automotive LiDAR, feem ntau vim nws lub hauv paus hauv kev paub tab semiconductor technology.

Technical Principple:Nws leverages Gallium Arsenide (GaAs) laser diodes thiab rhiab heev Silicon (Si) avalanche photodiodes (APDs) rau kev tshawb nrhiav. Kev lag luam silicon semiconductor kev loj hlob ua rau cov khoom siv no yooj yim thiab raug nqi -zoo.

Core Advantages:

Tus nqi -Kev ua tau zoo:Cov saw hlau tsim khoom siv rau GaAs lasers thiab Si-raws li cov khoom siv tau ua rau cov nqi qis dua, ua rau muaj kev tsim khoom loj thiab kev saws me nyuam hauv cov neeg siv tsheb.

Pov thawj Maturity:Ntau xyoo ntawm txoj kev loj hlob tau muab cov kev daws teeb meem zoo tshaj plaws thiab cov ntaub ntawv siv tau tiag tiag - ntiaj teb.

System Integration:Cov Cheebtsam yog cov compact, tso cai rau cov qauv me me uas yooj yim rau kev koom ua ke hauv kev tsim tsheb.

Cov Kev Sib Tw Tseem Ceeb thiab Kev Txwv:

Qhov muag Safety:Lub 905 nm wavelength ntog nyob rau hauv "rov qab muaj kev phom sij cheeb tsam," qhov twg tib neeg lub qhov muag lub lens tsom lub teeb mus rau lub retina. Txhawm rau kom ua tau raws li cov qauv kev nyab xeeb laser nruj (IEC 60825-1), lub zog siab tshaj plaws ntawm ib leeg yuav tsum raug txwv hnyav.

Detection Range:Qhov kev txwv lub zog no ncaj qha txwv qhov kev tshawb pom qhov siab tshaj plaws, ua rau nws nyuaj rau kev ntseeg siab txheeb xyuas cov khoom qis -reflectivity ntawm qhov deb tshaj 150-200 meters.

Solar Interference:Lub hnub ci spectrum muaj suab nrov tom qab tseem ceeb ntawm 905 nm, uas tuaj yeem ua rau lub teeb pom kev zoo - rau - suab nrov piv (SNR), tshwj xeeb tshaj yog nyob rau lub hnub ci ci.

2.2 1550 nm Wavelength: Lub Siab -Kev sib tw ua tau zoo

Lub 1550 nm wavelength sawv cev rau kev ua tau zoo- kev taw qhia txoj hauv kev, hais txog ntau qhov kev txwv tseem ceeb ntawm nws 905 nm counterpart.

Technical Principple:Qhov wavelength no feem ntau ntiav fiber ntau lasers, uas siv Erbium-doped fiber amplifiers thiab yuav tsum tau Indium Gallium Arsenide (InGaAs) detectors.

Core Advantages:

Superior Eye Safety:Nyob rau hauv lub "pob txha raug mob cheeb tsam," 1550 nm lub teeb yog absorbed los ntawm lub qhov muag lub cornea thiab vitreous kua ua ntej mus txog lub retina. Qhov kev nyab xeeb kev nyab xeeb no tso cai rau kev siv lub zog siab tshaj plaws10 mus rau 40 npaug siab duatshaj qhov tso cai rau 905 nm systems.

Longer Detection Range:Lub zog siab tso cai ncaj qha txhais mus rau ntau qhov kev nthuav dav, ntseeg tau pom cov khoom ntawm 250 meters thiab tshaj, nrog qee lub tshuab muaj peev xwm ntawm 300-500 meters. Qhov no muab lub sijhawm tseem ceeb ntxiv rau kev tsav tsheb ceev ceev.

Enhanced Environmental Resilience:Lub hnub ci keeb kwm yav dhau yog qhov qis qis ntawm 1550 nm, ua rau muaj SNR zoo dua. Tsis tas li ntawd, qhov ntev wavelength no nthuav dav me ntsis zoo dua los ntawm atmospheric obscurants xws li pos huab, pos huab, thiab hmoov av.

Cov Kev Sib Tw Tseem Ceeb thiab Kev Txwv:

Tus nqi siab dua:Ob lub lasers fiber ntau thiab InGaAs detectors yog ntau nyuaj thiab kim los tsim dua lawv Si-raws li counterparts, cuam tshuam rau tag nrho cov nqi system.

System complexity thiab loj:Fiber laser -raws li cov tshuab muaj keeb kwm ua tau ntau dua thiab siv zog ntau dua, ua rau muaj kev sib tw rau kev sib koom ua ke ntawm tsheb tsis sib haum, txawm hais tias kev siv zog me me txuas ntxiv mus.

3. Qhov Kev Ua Haujlwm Tseem Ceeb: Kev Ntsuas Kev Sib Piv

4. Wavelength Synergy nrog Txiav -Edge LiDAR Architectures

Qhov kev xaiv ntawm wavelength yog nce intertwined nrog lub hauv paus ntawm LiDAR thev naus laus zis.

Zaus-Modulated Nruam Wave (FMCW) LiDAR:

Inherent Dependency:FMCW thev naus laus zis, uas ntsuas qhov nrawm nrawm ntawm Doppler nyhuv thiab muab cov kev daws teeb meem tshwj xeeb, xav tau cov lasers nrog qhov ntev ntev. Qhov no yog cov cuab yeej ntuj ntawm fiber ntau lasers siv rau 1550nm systems.

Synergistic Advantage:CovFMCW + 1550 nmkev sib xyaw ua ke yog lub zog hluav taws xob, xa cov kev ua tau zoo tsis sib xws: kev tiv thaiv kev cuam tshuam los ntawm lwm yam LiDARs thiab lub hnub ci, ntsuas qhov nrawm nrawm, thiab qhov tseeb siab, tso nws ua tus qauv kub rau tom ntej - tiam kev nkag siab.

Khoom -State thiab Optical Phased Arrays (OPA):

Material Constraints:Qhov zoo tshaj plaws silicon photonics platforms rau cov khoom- xeev OPA scanning feem ntau yog optimized rau wavelengths nyob ib ncig ntawm 905 nm los yog 1300 nm. Kev tsim kho siab -kev ua tau zoo, tus nqi{5}} siv tau OPA systems ntawm 1550 nm ntawm silicon platform tseem yog ib qho kev tshawb fawb tseem ceeb thiab kev sib tw engineering.

Yav tom ntej Outlook:Kev sib koom ua ke ntawm cov khoom ntshiab- lub xeev scanning (rau kev ntseeg siab) nrog rau qhov zoo tshaj plaws wavelength yog ib qho kev sib ntaus sib tua tseem ceeb rau kev txhim kho LiDAR yav tom ntej.

Lwm Yam Wavelengths Hauv Kev Tshawb Fawb:

1350-1400nm Band:Cov cheeb tsam no tab tom tshawb nrhiav raws li qhov muaj peev xwm "qhov chaw qab zib," muab qhov muag pom kev nyab xeeb zoo dua li 905 nm thaum muaj peev xwm siv tau tus nqi ntau dua -cov cuab yeej ntes tau zoo dua 1550 nm.

Luv -Wave Infrared (SWIR):SWIR bands dav siv nyob rau hauv tshwj xeeb (xws li, tub rog, kev lag luam) daim ntawv thov tab sis tseem tsis tau pom dav siv tsheb thauj mus los vim tus nqi.

5. Daim ntawv thov Scenarios thiab kev ua lag luam Positioning

Qhov zoo tshaj plaws wavelength xaiv yog feem ntau dictated los ntawm lub hom phiaj daim ntawv thov.

Neeg nrog caij tsheb ADAS (L2+/L3):

Mainstream Xaiv: 905nm uaLiDARs tam sim no tswj hwm ntu no, ua rau muaj kev sib npaug ntawm kev ua tau zoo thiab tus nqi -kev ua tau zoo uas yuav tsum tau ua rau ntim ntau lawm.

Premium & High - Lub Tsheb Ua Haujlwm:Cov qauv ua ntej - ntug qauv pib txais yuav1 550nmthev naus laus zis raws li qhov sib txawv tseem ceeb, ua lag luam nws txoj kev nyab xeeb zoo dua thiab muaj peev xwm ntev -.

Robotaxi / Robobus (L4 / L5):

Clear Trend:Feem ntau cov tuam txhab tsim cov tsheb autonomous lean rau1 550nmtshuab. Cov kev xav tau ntawm cov cheeb tsam hauv nroog complex thiab qhov kev xav tau tseem ceeb rau kev tshawb pom ntau tshaj plaws ua pov thawj tus nqi siab dua.

Kev lag luam tsheb (Tsheb thauj mus los, Logistics):

Scenario-Kev xaiv nyob ntawm:Qhov kev txiav txim siab hinges ntawm qhov chaw ua haujlwm tsim qauv (ODD). Ntev - cov tsheb thauj khoom ntawm txoj kev loj tuaj yeem tau txais txiaj ntsig los ntawm 1550 nm qhov ntev, thaum qis dua - tsheb thauj neeg hauv nroog ceev yuav pom 905 nm cov kev daws teeb meem ntau dua kev lag luam.

6. Kev xaus thiab kev pom yav tom ntej

Hauv kev xaus, toj roob hauv pes ntawm automotive LiDAR wavelength yog txhais los ntawm qhov tseeb dichotomy:

905nm uasawv cev rau"Pragmatic Incumbent,"uas nws txoj kev tswj hwm yog hauv paus hauv kev paub tab, tus nqi -cov khoom siv tau zoo, ua rau kev siv dav dav hauv cov neeg siv tsheb tam sim no - hnub muaj tseeb.

1 550nmembodies cov"Kev Ua Haujlwm Vanguard,"muab ib txoj hauv kev tsim nyog rau kev nyab xeeb thiab kev ua haujlwm zoo dua, uas yog qhov tseem ceeb rau kev ua tiav qib siab ntawm kev ywj pheej.

Saib rau pem hauv ntej, kev lag luam yuav tsis converge ntawm ib lub wavelength. Hloov chaw, antau haiv neeg thiab coexisting ecosystemyuav tshwm sim. Raws li FMCW thiab ruaj khov-lub xeev cov thev naus laus zis thev naus laus zis paub tab, tus nqi them nqi cuam tshuam nrog 1550 nm systems yuav tsum txo qis, ua kom lawv tau txais yuav. Thaum kawg, tsis hais txog qhov tshwj xeeb wavelength, kev nrhiav tsis tu ncua ntawm kev lag luam tseem zoo ib yam: xa LiDAR systems uas muajuncompromising kev nyab xeeb, tshwj xeeb kev ua tau zoo, unparalleled kev cia siab rau, thiab siv tau cov nqi, yog li illuminating txoj kev mus rau ib tug tag nrho autonomous yav tom ntej.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.