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 idlala 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 aqoshiwe.
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
Umshwana wokuzihlangula:
- Ngalokhu simemezela ukuthi ezinye zezithombe ezivezwe kusizindalwazi sethu ziqoqwa ku-inthanethi kanye ne-Wikipedia, ngenhloso yokuthuthukisa imfundo nokwabelana ngolwazi. Siyawahlonipha amalungelo empahla yabo bonke abadali. Ukusetshenziswa kwalezi zithombe akuhloselwe inzuzo yokuhweba.
- Uma ukholwa ukuthi noma yikuphi okuqukethwe okusetshenzisiwe kwephula i-copyright yakho, sicela usithinte. Sizimisele kakhulu ukuthatha izinyathelo ezifanele, okuhlanganisa ukususa izithombe noma ukunikeza isichasiso esifanele, ukuze siqinisekise ukuthobelana nemithetho nezimiso zokuvikela ubunikazi bokusungula. Umgomo wethu uwukugcina inkundla enothile ngokuqukethwe, enobulungisa, futhi ehlonipha amalungelo empahla yobuhlakani babanye.
- 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