Lub tsheb -mounted lidar (LiDAR, Lub Teeb Pom Kev thiab Ranging) yog ib qho ntawm cov kev nkag siab tseem ceeb hauv cov tsheb uas muaj tus kheej. Nws ntsuas qhov kev ncua deb thiab cov duab ntawm cov khoom nyob ib puag ncig los ntawm emitting laser pulses thiab tau txais kev cuam tshuam cov teeb liab los ntawm cov khoom, yog li tsim ib qhov siab -pej xeem peb- daim duab qhia chaw ib puag ncig. Ntawm lawv, lub scanning galvanometer yog ib qho tseem ceeb nyob rau hauv lub tsheb -mounted lidar siv los tswj cov kev taw qhia ntawm lub laser beam. Nws yog lub luag haujlwm rau kev kho lub kaum sab xis ntawm lub laser beam kom nws tuaj yeem npog qhov xav tau ntawm qhov pom, yog li tau txais peb qhov - qhov taw qhia qhov taw qhia huab huab xav tau rau ib puag ncig. Piv nrog rau cov koob yees duab thiab radars, lidar tuaj yeem muab siab - daws teeb meem spatial perception peev xwm nyob rau hauv ntau yam teeb pom kev zoo thiab yog li ntawd plays lub luag hauj lwm irreplaceable nyob rau hauv txoj kev loj hlob ntawm autonomous tsav tsheb technology.
Optical Cheebtsam rau automotive lidar
Laser emitter: Semiconductor lasers nrog wavelengths ntawm 905nm lossis 1550nm feem ntau yog siv. Lasers nrog cov wavelengths no tsis pom ntawm tib neeg lub qhov muag thiab muaj lub zog siab, ua rau lawv haum rau ntev - nrhiav kom pom deb.
Optical lens: siv los ua kom pom tseeb lossis nthuav dav lub teeb ci laser kom paub meej tias lub laser pulse tuaj yeem npog qhov xav tau ntawm kev pom thiab xa mus rau thaj chaw zoo.
Optical filter (optical filter): siv los lim tawm cov suab nrov tom qab thiab tsuas yog tso cai rau cov teeb liab laser ntawm cov wavelengths tshwj xeeb kom dhau mus los txhim kho cov teeb liab - rau - suab nrov piv.
Photodetector: siv kom tau txais kev cuam tshuam laser teeb liab, feem ntau yog siv avalanche photodiodes (APD) lossis photomultiplier hlab (PMT) los txhim kho rhiab heev thiab nrhiav tau ntau yam
Lub hauv paus ntsiab lus ntawm scanning galvanometer hauv tsheb -mounted lidar
Lub scanning galvanometer feem ntau yog tsav los ntawm lub siab -ceev lub cev muaj zog lossis lub piezoelectric actuator los hloov cov kev taw qhia ntawm lub teeb laser los ntawm kev tswj lub kaum sab xis ntawm daim iav. Lub galvanometer tuaj yeem ua tiav ntau hom scanning, xws li linear scanning, zigzag scanning lossis kauv scanning, kom ua tau raws li cov kev xav tau sib txawv.
1. Linear scanning: Tsim nyog rau kev soj ntsuam zoo nyob rau hauv kab rov tav thiab ntsug cov lus qhia, uas muaj peev xwm ua kom muaj siab - daws teeb meem ob-dimensional lossis peb- cov duab loj.
2. Zigzag scanning: Los ntawm kev kho cov kev taw qhia scanning tsis tu ncua, kev pom loj dua tuaj yeem them.
3. Kauv scanning: siv rau tag nrho -pab scanning, haum rau 3D qauv thiab panoramic duab.
Qhov zoo ntawm scanning galvanometers
Nyob rau hauv lub tsheb -mounted lidar, lub scanning galvanometer muaj cov yam ntxwv ntawm high precision, muaj zog saj zawg zog, me me, lub teeb yuag, thiab muaj kev ntseeg siab. Lub kaum ntse ntse thiab cov kev taw qhia tswj ntawm lub laser beam kom ntseeg tau qhov tseeb thiab kev daws teeb meem siab ntawm kev kuaj pom. Qhov hloov pauv tau yooj yim scanning ntau thiab hom tuaj yeem hloov mus rau qhov chaw tsav tsheb sib txawv thiab daim ntawv thov scenarios. Tus tsim rau kev txhim kho tsheb -mounted lidar yog nruj.
Nws yog compact thiab muaj peev xwm muab kev ua tau zoo heev yam tsis muaj kev nce lub nra ntawm lub system. Tom qab optimized tsim, nws muaj peev xwm tiv taus ntau yam hnyav ib puag ncig xws li huab cua kub, kev co thiab av noo, ua kom lub sij hawm ntev - stability thiab durability ntawm lub system.
Yog li ntawd, lub tsheb -mounted lidar scanning galvanometer yog qhov tseem ceeb ntawm tag nrho lub tsheb scanning. Nws tsis tsuas yog txiav txim siab txog kev saib xyuas, kev daws teeb meem thiab qhov tseeb ntawm lidar, tab sis kuj txhim kho qhov yooj yim thiab cov lus teb ceev ntawm lub kaw lus. Yog li ntawd, kev xaiv lub tsheb -mounted lidar scanning galvanometer yuav tsum tau them sai sai rau nws cov kev ua tau zoo thiab kev ua haujlwm, uas yuav cuam tshuam ncaj qha rau tag nrho kev nyab xeeb thiab kev ua haujlwm ntawm kev tsav tsheb tsis muaj zog.
