1. Iyini inzwa yesikhathi se-time-Flyity (tof)?

Yini ikhamera yesikhathi sendiza? Ingabe ikhamera edonsa indiza yendiza? Ingabe kunokuthile okumele kwenziwe ngezindiza noma izindiza? Yebo, empeleni kuyindlela ende!

I-tof iyisilinganiso sesikhathi esithatha into, izinhlayiyana noma igagasi ukuhamba ibanga. Ubuwazi ukuthi uhlelo lwe-bat Sonar lusebenza? Uhlelo lwe-Time-of-Flight luyafana!

Kunezinhlobo eziningi zezinzwa zesikhathi se-time-of-flitf, kepha amakhamera wesikhathi sendiza nezikena ze-laser, ezisebenzisa ubuchwepheshe obubizwa ngokuthi yi-lidar (ukutholwa okukhanyayo) ukukala ukujula kwamaphoyinti ahlukahlukene esithombeni ngokusikhanyisa ngokukhanya okungathandeki.

Idatha eyenziwe futhi yathungatha ukusebenzisa izinzwa ze-tof ilusizo kakhulu njengoba inganikeza ukutholwa kwezinyawo, ukuqinisekiswa komsebenzisi kususelwa ezicini zobuso, imephu yemvelo esebenzisa ama-allam (ukwenziwa kwemephu kanye nokuthola imephu) ama-algorithms, nokuningi.

Lolu hlelo empeleni lusetshenziswa kabanzi kumarobhothi, izimoto zokuzishayela, ngisho namanje ithuluzi lakho leselula. Isibonelo, uma usebenzisa i-Huawei P3 Pro, i-OPPO RX17 Pro, LG G8 ThinQ, njll, ifoni yakho inekhamera ye-toch!

Ikhamera ye-TOF

2. Isebenza kanjani inzwa yesikhathi sokundiza?

Manje, singathanda ukunikeza isingeniso esifushane salokho inzwa yesikhathi se-Time-of-Flit

UyonidazelaIzinzwa zisebenzisa ama-lasers amancane ukuze akhiphe ukukhanya okungekho emthethweni, lapho ukukhanya okuholela khona kuphuma kunoma iyiphi into bese kubuyela enzwa. Ngokusekelwe umehluko wesikhathi phakathi kokuphuma kokukhanya kanye nokubuya ku-sensor ngemuva kokuboniswa yinto, inzwa ingalinganisa ibanga phakathi kwento nenzwa.

Namuhla, sizohlola izindlela ezi-2 ukuthi zisebenzisa kanjani isikhathi sokuhamba ukunquma ibanga nokujula: Kusetshenziswa ama-pulses wesikhathi, nokusebenzisa ukuguquguquka kwesigaba amagagasi apholiji.

Sebenzisa ama-pulses wesikhathi

Isibonelo, isebenza ngokukhanyisa ilitshe nge-laser, bese ikala ukukhanya okuboniswe ngesithwebuli, bese usebenzisa ijubane lokukhanya ukuze likhiphe ibanga elifanele ukubala kahle ibanga. Ngaphezu kwalokho, umehluko ngesikhathi sokubuya se-laser kanye ne-wavelength esesetshenziselwa ukwenza izethulo ezinembile ze-3D zedijithali kanye nezici ezingaphezulu kwelitshe, futhi zibonise imephu ngayinye yezimpawu zayo.

Njengoba ukwazi ukubona ngenhla, ukukhanya kwe-laser kuxoshwe bese kuphuma entweni ebuyela enzwa. Ngesikhathi sokubuya se-laser, amakhamera we-tof ayakwazi ukukala amabanga aqondile ngesikhathi esifushane esinikezwe ijubane lokuhamba. .

(Ijubane lokukhanya x isikhathi sendiza) / 2

I-tof iguqukela ebangeni

Njengoba ubona, isibali sikhathi sizoqala ngenkathi ukukhanya kuvaliwe, kwathi lapho owemukelayo ethola ukukhanya, isibali sikhathi sizobuyela isikhathi. Lapho ususa kabili, "isikhathi sokundiza" sokukhanya siyatholakala, futhi ijubane lokukhanya lihlala likhona, ngakho-ke ibanga lingabalwa kalula kusetshenziswa ifomula ngenhla. Ngale ndlela, wonke amaphuzu ebusweni bento anganqunywa.

Sebenzisa ukushintshwa kwesigaba kwe-am wave

Okulandelayo, theUyonidazelaIngasebenzisa futhi amagagasi aqhubekayo ukuthola ukushintshwa kwesigaba kokukhanya okubonisiwe ukuthola ukujula nebanga.

Isigaba Shift sisebenzisa i-AM Wave

Ngokuguqula i-amplitude, kwakha umthombo wokukhanya we-sinusoidal ngemvamisa eyaziwayo, okuvumela umtshina ukuthola ukushintshwa kwesigaba kokukhanya okubonisiwe usebenzisa ifomula elandelayo:

Lapho c ijubane lokukhanya (c = 3 × 10 ^ 8 m / s), λ i-wavelength (λ = 15 m), futhi i-F iyimvamisa, iphuzu ngalinye ku-sensor lingabalwa kalula ekujuleni.

Zonke lezi zinto zenzeka ngokushesha okukhulu njengoba sisebenza ngejubane lokukhanya. Ungacabanga ngokunemba nangejubane lapho izinzwa zikwazi ukukala ngazo? Ake nginikeze isibonelo, ukukhanya kuhamba ngejubane lamakhilomitha angama-300,000 ngomzuzwana, uma into isuka kuwe, umehluko wesikhathi phakathi kokukhanya okuphuma kumakhondo angama-33, okulingana kuphela nemizuzwana engu-33! Hewu! Ukungasho, idatha ethathwe izokunikeza isethulo esinembile se-3D se-3D sawo wonke amaphikseli esithombeni.

Kungakhathalekile ukuthi isimiso esisetshenziswayo, sinikeza umthombo wokukhanya okhanyisela yonke indawo evumela inzwa ukunquma ukujula kwawo wonke amaphuzu. Umphumela onjalo kukunikeza imephu yebanga lapho i-pixel ngayinye ifaka ibanga lephuzu elihambisanayo endaweni yesehlakalo. Okulandelayo yisibonelo segrafu yebanga le-toof:

Isibonelo segrafu yebanga le-tof

Manje njengoba sesazi ukuthi i-tof iyasebenza, kungani kukuhle? Kungani usebenzile? Yini abayilungele ngayo? Ungakhathazeki, kunezindlela eziningi zokusebenzisa inzwa ye-tof, kodwa kunjalo kukhona ukulinganiselwa.

3. Izinzuzo zokusebenzisa izinzwa zesikhathi se-time-of-flit

Isilinganiso esinembile nesisheshayo

Uma kuqhathaniswa nezinye izinzwa zebanga ezifana ne-ultrasound noma ama-lasers, izinzwa zesikhathi sezindiza ziyakwazi ukuqamba isithombe se-3D sesimo ngokushesha okukhulu. Isibonelo, ikhamera ye-TOF ingakwenza lokhu kanye kuphela. Hhayi lokho kuphela, inzwa ye-tof iyakwazi ukuthola izinto ngokunemba ngesikhathi esifushane futhi ayithintwa ngumswakama, ingcindezi yomoya kanye nokushisa, okwenza kube lula ekusetshenzisweni okungaphakathi nangaphandle.

ibanga elide

Njengoba izinzwa ze-tof zisebenzisa ama-lasers, nazo ziyakwazi ukukala amabanga amade namabanga anokunemba okuphezulu. Izinzwa ze-tof ziyavumelana nezimo ngoba ziyakwazi ukuthola izinto eziseduze nasekude yazo zonke izinhlobo nosayizi.

Kuyavumelana nezimo ngomqondo wokuthi uyakwazi ukwenza ngokwezifiso i-Optics yohlelo ukuze usebenze kahle, lapho ungakhetha khona izinhlobo zokudlulisela kanye namalensi ukuthola inkambu yokubuka oyifunayo.

Ukuphepha

Ukhathazekile ukuthi i-laser evela kuUyonidazelaI-sensor izolimaza amehlo akho? Ungakhathazeki! Izinzwa eziningi ze-tof manje zisebenzisa i-laser enamandla ye-infrared njengomthombo wokukhanya bese uyishayela ngama-pulses alungisiwe. I-sensor ihlangana namazinga okuphepha ekilasi 1 ukuqinisekisa ukuthi iphephile esweni lomuntu.

kuqiza kahle

Uma kuqhathaniswa nobunye ubuchwepheshe bokuskena okungcono kakhulu kwe-3D okufana nezinhlelo zekhamera yekhamera ehlelekile noma ama-rackifinders we-laser, izinzwa ze-tof zishibhile kakhulu uma ziqhathaniswa nazo.

Ngaphandle kwakho konke lokhu kulinganiselwa, i-tof isethembeke kakhulu futhi iyindlela esheshayo yokuthwebula imininingwane ye-3D.

4. Ukulinganiselwa kwe-tof

Yize i-tof inezinzuzo eziningi, nayo inemikhawulo. Eminye yemikhawulo ye-TOF ifaka:

• Ukukhanya okuhlakazekile

Uma indawo ekhanyayo kakhulu isondelene kakhulu kwi-sensor yakho ye-tof, ingahlakaza ukukhanya ngokweqile kusomukeli lwakho futhi idale ubuciko kanye nokucabanga kwakho okungafuneki, ngoba inzwa yakho ye-tof idinga kuphela ukukhombisa ukukhanya uma sekulungile.

• Ukuboniswa okuningi

Lapho usebenzisa izinzwa ze-tof emakhoneni kanye nobumba emikhumelweni, bangadala ukuboniswa okungafuneki, njengoba ukukhanya kungagobhoza izikhathi eziningi, kuhlanekezela isilinganiso.

• Ukukhanya okukhanyayo

Usebenzisa ikhamera ye-TOF Outdors ekhanyayo elangeni elikhanyayo kungenza ukusetshenziswa kwangaphandle kube nzima. Lokhu kungenxa yokuqina okuphezulu kokukhanya kwelanga okubangela amaphikseli we-sensor ukuthi agcwale ngokushesha, okwenza kube nzima ukuthola ukukhanya kwangempela okuboniswe entweni.

• Isiphetho

Izinzwa ze-tof kanyeI-TOF LEnsIngasetshenziswa ezinhlobonhlobo zezicelo. Ukusuka kwimephu ye-3D, ezenzakalelayo zezimboni, ukutholwa kwezithiyo, izimoto zokuzishayela izithiyo, ezolimo, amarobhothi, ukuzulazula ngaphakathi, ukuqashelwa kwento, ukuskena okungokoqobo okungathandeki! Ukusetshenziswa kobuchwepheshe be-tof akupheli.

Ungaxhumana nathi nganoma yiziphi izidingo zama-tof lens.

I-Chuang Aptoelectronics igxile kuma-lens aphezulu wencazelo yokuchazwa yokwakha umkhiqizo obonakalayo ophelele

UChuang Aptoelectronics manje usukhiqize izinhlobonhloboAma-tof lensnjenge:

Ch3651A F3.6mm F1.2 1/2 "Ir850nm

CH3651B F3.6mm F1.2 1/2 "IR940NM

CH3652A F3.3MM F1.1 1/3 "Ir850nm

CH3652B F3.3MM F1.1 1/3 "IR940NM

Ch3653A F3.9mm F1.1 1/3 "Ir850nm

CH3653B F3.9MM F1.1 1/3 "IR940NM

Ch3654A F5.0mm F1.1 1/3 "Ir850nm

CH3654B F5.0mm F1.1 1/3 "IR940NM