Bhalisela Imidiya Yethu Yezokuxhumana Ukuze Uthumele Ngokushesha
Ubuchwepheshe be-Direct Time-of-Flight (dTOF) buyindlela entsha yokulinganisa ngokunembile isikhathi sendiza yokukhanya, kusetshenziswa indlela ye-Time Correlated Single Photon Counting (TCSPC).Lobu buchwepheshe buyingxenye yezinhlelo zokusebenza ezihlukene, kusukela ekuzweleni ukusondela ku-elekthronikhi yabathengi kuya ezinhlelweni ezithuthukisiwe ze-LiDAR ezinhlelweni zezimoto.Emgogodleni wayo, amasistimu e-dTOF aqukethe izingxenye ezibalulekile ezimbalwa, ngayinye edlala indima ebalulekile ekuqinisekiseni izilinganiso ezinembile zebanga.
Izingxenye Eziyinhloko Zezinhlelo ze-dTOF
I-Laser Driver ne-Laser
Umshayeli we-laser, okuyingxenye ebalulekile yesekethe yesidlulisi, ukhiqiza amasiginali we-digital pulse ukuze alawule ukuphuma kwelaser ngokushintsha kwe-MOSFET.Ama-Lasers, ikakhulukaziI-Vertical Cavity Surface Emitting Lasers(ama-VCSEL), athandwa ngenxa yobubanzi bawo obuncane, ukuqina kwamandla aphezulu, amandla okushintshashintsha ngokushesha, kanye nokuhlanganisa kalula.Ngokuya ngohlelo lokusebenza, amaza amaza angu-850nm noma angu-940nm akhethwa ukulinganisa phakathi kweziqongo zokumuncwa kwe-solar spectrum nokusebenza kahle kwe-sensor quantum.
Ukudlulisa nokwamukela Optics
Ohlangothini lokudlulisa, ilensi yokubona elula noma inhlanganisela yamalensi ahlanganayo kanye ne-Diffractive Optical Elements (DOEs) iqondisa i-laser beam kuyo yonke inkambu yokubuka oyifunayo.Ama-optics atholayo, ahloselwe ukuqoqa ukukhanya ngaphakathi kwendawo yokubuka okuqondiwe, azuza kumalensi anezinombolo eziphansi zika-F nokukhanya okuhlobene okuphezulu, eduze nezihlungi ze-narrowband ukuze kuqedwe ukuphazamiseka kokukhanya okungaphandle.
Izinzwa ze-SPAD ne-SiPM
I-single-photon avalanche diodes (SPAD) kanye ne-Silicon photomultipliers (SiPM) izinzwa eziyinhloko ezinhlelweni ze-dTOF.Ama-SPAD ahlukaniswa ngekhono lawo lokuphendula kuma-photon awodwa, aqala i-avalanche yamanje eqinile nge-photon eyodwa kuphela, okuwenza afanelekele ukukalwa okunembayo okuphezulu.Nokho, usayizi wabo wephikseli omkhulu uma uqhathaniswa nezinzwa ze-CMOS zendabuko ukhawulela ukulungiswa kwendawo kwezinhlelo ze-dTOF.
I-Time-to-Digital Converter (TDC)
Isekethe ye-TDC ihumusha amasiginali e-analog ibe amasiginali edijithali amelelwa yisikhathi, ithwebula umzuzu oqondile ukushaya kwe-photon ngakunye okurekhodwayo.Lokhu kunemba kubalulekile ekunqumeni indawo yento eqondiwe ngokusekelwe ku-histogram yama-pulses arekhodiwe.
Ihlola Amapharamitha Wokusebenza we-dTOF
Ibanga Lokuthola Nokunemba
Ibanga lokutholwa lesistimu ye-dTOF ngokwethiyori linwebeka kuze kufike lapho ama-pulses alo okukhanya angahamba khona futhi aphinde aboniswe emuva kunzwa, ekhonjwa ngokusobala emsindweni.Kuzinto zikagesi zabathengi, ukugxila kuvame ukuba phakathi kwebanga elingu-5m, kusetshenziswa ama-VCSEL, kuyilapho izinhlelo zokusebenza zezimoto zingadinga ububanzi bokutholwa obungu-100m noma ngaphezulu, okudinga ubuchwepheshe obuhlukile obufana nama-EEL nomai-fiber lasers.
chofoza lapha ukuze ufunde kabanzi mayelana nomkhiqizo
Ububanzi obungaguquki obukhulu
Ubukhulu bebanga obungenawo ukungaqondakali buncike esikhaleni phakathi kwama-pulses akhishiwe kanye nemvamisa yokushintshashintsha ye-laser.Isibonelo, nge-modulation frequency ye-1MHz, uhla olungaguquki lungafinyelela ku-150m.
Ukunemba kanye Nephutha
Ukunemba ezinhlelweni ze-dTOF kunqunyelwe ngokwemvelo ububanzi be-pulse belaser, kuyilapho amaphutha angavela ngenxa yokungaqiniseki okuhlukahlukene ezingxenyeni, okuhlanganisa umshayeli we-laser, impendulo yenzwa ye-SPAD, nokunemba kwesekhethi ye-TDC.Amasu afana nokusebenzisa i-SPAD eyinkomba angasiza ekwehliseni lawa maphutha ngokusungula isisekelo sesikhathi nebanga.
Ukumelana Nomsindo Nokuphazamiseka
Amasistimu e-dTOF kufanele abhekane nomsindo wangemuva, ikakhulukazi ezindaweni zokukhanya okuqinile.Amasu afana nokusebenzisa amaphikseli amaningi e-SPAD anamazinga ahlukahlukene okuncisha angasiza ekulawuleni le nselele.Ukwengeza, ikhono le-dTOF lokuhlukanisa phakathi kokubonisa okuqondile nokuhamba ngezindlela eziningi lithuthukisa ukuqina kwayo ngokumelene nokuphazamiseka.
Ukulungiswa Kwendawo kanye Nokusetshenziswa kwamandla
Intuthuko kubuchwepheshe bezinzwa ze-SPAD, njengokuguquka ukusuka ekukhanyeni kohlangothi lwangaphambili (FSI) kuya ezinqubweni zokukhanyisa ohlangothini olungemuva (BSI), kuthuthukise kakhulu amazinga okumunca ama-photon nokusebenza kahle kwezinzwa.Le nqubekelaphambili, ehlanganiswe nemvelo yokushayeka yezinhlelo ze-dTOF, iholela ekusetshenzisweni kwamandla okuphansi uma kuqhathaniswa nezinhlelo zamagagasi aqhubekayo njenge-iTOF.
Ikusasa le-dTOF Technology
Naphezu kwezithiyo eziphezulu zobuchwepheshe nezindleko ezihlobene nobuchwepheshe be-dTOF, izinzuzo zayo ngokunemba, ububanzi, nokusebenza kahle kwamandla kuyenza ibe ikhandidethi ethembisayo yezinhlelo zokusebenza zesikhathi esizayo emikhakheni eyahlukene.Njengoba ubuchwepheshe bezinzwa kanye nokwakhiwa kwesekethe ye-elekthronikhi kuqhubeka nokuvela, amasistimu e-dTOF akulungele ukwamukelwa kabanzi, ukushayela okusha ku-electronics abathengi, ukuphepha kwezimoto, nangale kwalokho.
- Kusuka ekhasini lewebhu02.02 TOF系统 第二章 dTOF系统 - 超光 Ngokushesha kunokukhanya (faster-than-light.net)
- ngombhali: Chao Guang
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- Sicela usithinte kuleli kheli le-imeyili elilandelayo:sales@lumispot.cn.Sizibophezela ekuthatheni isinyathelo ngokushesha lapho sithola noma yisiphi isaziso futhi siqinisekisa ukubambisana okungu-100% ekuxazululeni noma yiziphi izinkinga ezinjalo.
Isikhathi sokuthumela: Mar-07-2024