1. Kodi sensa ya nthawi yaulendo (ToF) ndi chiyani?

Kodi kamera yanthawi yonyamuka ndi chiyani? Kodi ndi kamera yomwe imajambula kuuluka kwa ndege? Kodi zili ndi chochita ndi ndege kapena ndege? Chabwino, ndi patali ndithu!

ToF ndi muyeso wa nthawi yomwe zimatengera chinthu, tinthu kapena mafunde kuyenda mtunda. Kodi mumadziwa kuti makina a mileme amagwira ntchito? Dongosolo la nthawi yaulendo ndi lofanana!

Pali mitundu yambiri ya masensa a nthawi ya kuthawa, koma ambiri ndi makamera a nthawi ya ndege ndi makina opangira laser, omwe amagwiritsa ntchito teknoloji yotchedwa lidar (kuzindikira kuwala ndi kuyambira) kuti athe kuyeza kuya kwa mfundo zosiyanasiyana pa chithunzi powalitsa. ndi kuwala kwa infrared.

Deta yopangidwa ndi kujambulidwa pogwiritsa ntchito masensa a ToF ndiyothandiza kwambiri chifukwa imatha kupereka chidziwitso chaoyenda pansi, kutsimikizika kwa wogwiritsa potengera mawonekedwe a nkhope, kupanga mapu a chilengedwe pogwiritsa ntchito ma algorithms a SLAM (kutanthauzira nthawi imodzi ndi mapu), ndi zina zambiri.

Dongosololi limagwiritsidwa ntchito kwambiri m'maloboti, magalimoto odziyendetsa okha, ndipo ngakhale pano ndi foni yanu yam'manja. Mwachitsanzo, ngati mukugwiritsa ntchito Huawei P30 Pro, Oppo RX17 Pro, LG G8 ThinQ, etc., foni yanu ili ndi kamera ya ToF!

Kamera ya ToF

2. Kodi sensa ya nthawi ya ndege imagwira ntchito bwanji?

Tsopano, tikufuna kuti tipereke chidule chachidule cha sensa ya nthawi yakuuluka ndi momwe imagwirira ntchito.

KutiFmasensa amagwiritsa ntchito ma laser ang'onoang'ono kutulutsa kuwala kwa infrared, komwe kuwalako kumadumphira pa chinthu chilichonse ndikubwerera ku sensa. Malingana ndi kusiyana kwa nthawi pakati pa kutuluka kwa kuwala ndi kubwerera ku sensa pambuyo powonetsedwa ndi chinthucho, sensa imatha kuyeza mtunda pakati pa chinthucho ndi sensa.

Lero, tiwona njira ziwiri momwe ToF amagwiritsira ntchito nthawi yoyenda kuti adziwe mtunda ndi kuya: kugwiritsa ntchito mafunde anthawi, ndikugwiritsa ntchito kusintha kwa mafunde osinthika.

Gwiritsani ntchito mphamvu zanthawi yake

Mwachitsanzo, imagwira ntchito pounikira chandamale ndi laser, kenako kuyeza kuwala kowonekera ndi scanner, ndiyeno kugwiritsa ntchito liwiro la kuwala kutulutsa mtunda wa chinthucho kuti awerengere ndendende mtunda womwe wayenda. Kuphatikiza apo, kusiyana kwa nthawi yobwerera kwa laser ndi kutalika kwa mafunde kumagwiritsidwa ntchito kupanga choyimira cholondola cha digito cha 3D ndi mawonekedwe amtundu wa chandamale, ndikuwonetsa mawonekedwe ake.

Monga mukuonera pamwambapa, kuwala kwa laser kumachotsedwa ndikuchotsa chinthucho kubwerera ku sensa. Ndi nthawi yobwerera kwa laser, makamera a ToF amatha kuyeza mtunda wolondola pakanthawi kochepa kutengera kuthamanga kwaulendo wopepuka. (ToF imatembenuzidwa kukhala mtunda) Iyi ndi njira yomwe katswiri amagwiritsa ntchito kuti afike pamtunda weniweni wa chinthu:

(liwiro la kuwala x nthawi yowuluka) / 2

ToF imasintha kukhala mtunda

Monga mukuwonera, chowerengera chidzayamba pomwe kuwala kwazimitsidwa, ndipo wolandila akalandira kuwala kobwerera, chowerengera chidzabwezeranso nthawiyo. Pochotsa kawiri, "nthawi yowuluka" ya kuwala imapezeka, ndipo kuthamanga kwa kuwala kumakhala kosalekeza, kotero mtunda ukhoza kuwerengedwa mosavuta pogwiritsa ntchito ndondomeko pamwambapa. Mwanjira imeneyi, mfundo zonse zomwe zili pamwamba pa chinthucho zitha kutsimikizika.

Gwiritsani ntchito kusintha kwa gawo la mafunde a AM

Kenako, aKutiFangagwiritsenso ntchito mafunde osalekeza kuti azindikire kusintha kwa gawo la kuwala kowonekera kuti adziwe kuya ndi mtunda.

Kusintha kwa gawo pogwiritsa ntchito mafunde a AM

Posintha matalikidwe, imapanga gwero la kuwala kwa sinusoidal ndi ma frequency odziwika, kulola chojambulira kudziwa kusintha kwa gawo la kuwala kowonekera pogwiritsa ntchito njira iyi:

kumene c ndi liwiro la kuwala (c = 3 × 10 ^ 8 m / s), λ ndi wavelength (λ = 15 m), ndipo f ndi mafupipafupi, mfundo iliyonse pa sensa ikhoza kuwerengedwa mozama mozama.

Zinthu zonsezi zimachitika mofulumira kwambiri pamene tikugwira ntchito pa liwiro la kuwala. Kodi mungaganizire kulondola komanso kuthamanga komwe masensa amatha kuyeza? Ndiloleni ndipereke chitsanzo, kuwala kumayenda pa liwiro la makilomita 300,000 pamphindikati, ngati chinthu chili kutali ndi inu 5m, kusiyana kwa nthawi pakati pa kuwala kochoka pa kamera ndi kubwerera ndi pafupifupi 33 nanoseconds, zomwe zimangofanana ndi 0.000000033 masekondi! Oo! Osanenanso, zomwe zalandidwa zidzakupatsani choyimira cholondola cha digito cha 3D pa pixel iliyonse pachithunzichi.

Mosasamala kanthu za mfundo yomwe imagwiritsidwa ntchito, kupereka kuwala komwe kumawunikira zochitika zonse kumalola sensa kuti izindikire kuya kwa mfundo zonse. Zotsatira zotere zimakupatsani mapu atali pomwe pixel iliyonse imayika mtunda wopita kumalo ofananirako. Chotsatira ndi chitsanzo cha ma graph osiyanasiyana a ToF:

Chitsanzo cha ma graph osiyanasiyana a ToF

Tsopano popeza tikudziwa kuti ToF imagwira ntchito, chifukwa chiyani ili yabwino? Chifukwa chiyani? Ndi abwino kwa chiyani? Osadandaula, pali zabwino zambiri zogwiritsa ntchito sensor ya ToF, koma zowona pali zolepheretsa.

3. Ubwino wogwiritsa ntchito masensa a nthawi yaulendo

Muyezo wolondola komanso wachangu

Poyerekeza ndi masensa ena akutali monga ma ultrasound kapena ma laser, masensa a nthawi yaulendo amatha kupanga chithunzi cha 3D cha zochitika mwachangu kwambiri. Mwachitsanzo, kamera ya ToF imatha kuchita izi kamodzi kokha. Osati zokhazo, sensor ya ToF imatha kuzindikira zinthu molondola kwakanthawi kochepa ndipo sichimakhudzidwa ndi chinyezi, kuthamanga kwa mpweya ndi kutentha, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito mkati ndi kunja.

mtunda wautali

Popeza masensa a ToF amagwiritsa ntchito ma lasers, amathanso kuyeza mtunda wautali ndi milingo molondola kwambiri. Masensa a ToF amatha kusinthasintha chifukwa amatha kuzindikira zinthu zapafupi ndi zakutali zamitundu yonse ndi makulidwe.

Imasinthasinthanso m'lingaliro lakuti mumatha kusintha mawonekedwe a makina kuti mugwire bwino ntchito, komwe mungasankhe mitundu yotumizira ndi yolandila ndi magalasi kuti mupeze mawonekedwe omwe mukufuna.

Chitetezo

Nkhawa kuti laser kuKutiFsensa ingapweteke maso anu? osadandaula! Masensa ambiri a ToF tsopano amagwiritsa ntchito laser infrared infrared laser ngati gwero lowunikira ndikuyendetsa ndi ma pulses osinthika. Sensa imakumana ndi mfundo zachitetezo cha Class 1 laser kuti zitsimikizire kuti ndizotetezeka m'maso mwa munthu.

mtengo wake

Poyerekeza ndi matekinoloje ena akuya a 3D monga makina opangidwa ndi makamera owala kapena ma laser rangefinder, masensa a ToF ndi otsika mtengo kwambiri poyerekeza ndi iwo.

Ngakhale zili zolepheretsa zonsezi, ToF ikadali yodalirika komanso njira yachangu kwambiri yojambulira zambiri za 3D.

4. Zochepa za ToF

Ngakhale ToF ili ndi maubwino ambiri, ilinso ndi malire. Zina mwazoletsa za ToF ndi izi:

• Kuwala kwamwazikana

Ngati malo owala kwambiri ali pafupi kwambiri ndi sensa yanu ya ToF, amatha kumwaza kuwala kochulukirapo mu cholandila chanu ndikupanga zinthu zakale ndi zowunikira zosafunikira, popeza sensor yanu ya ToF imangofunika kuwonetsa kuwala kamodzi muyeso wakonzeka.

• Zowunikira zambiri

Mukamagwiritsa ntchito masensa a ToF pamakona ndi mawonekedwe a concave, amatha kuyambitsa mawonekedwe osafunikira, chifukwa kuwala kumatha kuphulika kangapo, ndikusokoneza muyeso.

• Kuwala kozungulira

Kugwiritsa ntchito kamera ya ToF panja pakuwala kwadzuwa kungapangitse kugwiritsa ntchito panja kukhala kovuta. Izi zimachitika chifukwa cha kuchuluka kwa kuwala kwa dzuwa komwe kumapangitsa kuti ma pixel a sensa akhudze mwachangu, zomwe zimapangitsa kuti zikhale zosatheka kuzindikira kuwala kwenikweni komwe kumawonekera kuchokera ku chinthucho.

• Mapeto

Ma sensor a ToF ndiLens ya ToFangagwiritsidwe ntchito zosiyanasiyana. Kuchokera pa Mapu a 3D, Industrial Automation, Kuzindikira Zopinga, Magalimoto Odziyendetsa Pawokha, Ulimi, Maloboti, Kuyenda M'nyumba, Kuzindikira Manja, Kusanthula Zinthu, Miyeso, Kuyang'anira Kufikira Zowona Zowonjezereka! Kugwiritsa ntchito ukadaulo wa ToF sikutha.

Mutha kulumikizana nafe pazosowa zilizonse zamagalasi a ToF.

Chuang An Optoelectronics imayang'ana kwambiri ma lens owoneka bwino kwambiri kuti apange mtundu wowoneka bwino.

Chuang An Optoelectronics tsopano wapanga zosiyanasiyanaMagalasi a TOFmonga:

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