Labarai - firikwensin dTOF: ƙa'idar aiki da mahimman abubuwan haɗin gwiwa.

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Fasahar Lokaci-Tsare Kai tsaye (dTOF) wata sabuwar hanya ce don auna daidai lokacin tashin lokacin tashi, ta yin amfani da hanyar Kidaya Photon Single Photon (TCSPC).Wannan fasaha tana da alaƙa da aikace-aikace iri-iri, daga kusanci kusa da na'urorin lantarki zuwa tsarin LiDAR na ci gaba a cikin aikace-aikacen mota.A ainihinsa, tsarin dTOF ya ƙunshi abubuwa masu mahimmanci da yawa, kowannensu yana taka muhimmiyar rawa wajen tabbatar da ingantacciyar ma'aunin nesa.

Abubuwan Core na Tsarin dTOF

Laser Driver da Laser

Direban Laser, wani muhimmin sashi na da'irar watsawa, yana haifar da siginar bugun jini na dijital don sarrafa fitar da laser ta hanyar sauya MOSFET.Laser, musammanTsayayyen Kogo Surface Emitting Lasers(VCSELs), ana fifita su don kunkuntar bakan su, ƙarfin ƙarfi mai ƙarfi, ƙarfin daidaitawa da sauri, da sauƙin haɗin kai.Dangane da aikace-aikacen, an zaɓi tsayin raƙuman raƙuman ruwa na 850nm ko 940nm don daidaitawa tsakanin kololuwar bakan hasken rana da ingancin firikwensin ƙididdigewa.

Watsawa da Karɓar Na'urorin gani

A gefen watsawa, ruwan tabarau na gani mai sauƙi ko haɗuwa da ruwan tabarau masu haɗaka da Diffractive Optical Elements (DOEs) yana jagorantar katako na Laser a fadin filin da ake so.Na'urar gani da ido, da nufin tara haske a cikin filin da aka yi niyya, suna amfana daga ruwan tabarau tare da ƙananan lambobin F da mafi girman hasken dangi, tare da matattarar kunkuntar don kawar da tsangwama na haske.

SPAD da SiPM Sensors

Diodes mai ɗaukar hoto guda ɗaya (SPAD) da Silicon photomultipliers (SiPM) sune firikwensin farko a cikin tsarin dTOF.Ana bambanta SPADs ta hanyar iya amsawa ga photons guda ɗaya, suna haifar da ƙaƙƙarfan ƙaƙƙarfan halin yanzu tare da photon guda ɗaya kawai, yana sa su dace don ma'auni mai mahimmanci.Koyaya, girman pixel su girma idan aka kwatanta da na'urori masu auna firikwensin CMOS na al'ada suna iyakance ƙudurin sararin samaniya na tsarin dTOF.

Canjin Lokaci-zuwa Dijital (TDC)

Da'irar TDC tana fassara siginar analog zuwa siginar dijital wanda lokaci ke wakilta, yana ɗaukar daidai lokacin da kowane bugun bugun hoto na hoto.Wannan daidaito yana da mahimmanci don tantance matsayin abin da aka yi niyya bisa ga lissafin bugun jini da aka yi rikodi.

Binciko Ma'auni na Ayyuka na dTOF

Gane Range da Daidaitacce

Kewayon gano tsarin dTOF bisa ka'ida yana fadada har zuwa lokacin da haskensa zai iya tafiya kuma a sake nuna shi zuwa firikwensin, wanda aka gano musamman daga amo.Don na'urorin lantarki na mabukaci, ana mayar da hankali akai-akai a cikin kewayon 5m, ta amfani da VCSELs, yayin da aikace-aikacen kera motoci na iya buƙatar kewayon ganowa na 100m ko fiye, yana buƙatar fasaha daban-daban kamar EELs kofiber Laser.

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Matsakaicin Rage mara tabbas

Matsakaicin kewayo ba tare da shubuha ba ya dogara da tazara tsakanin bugun bugun jini da mitar na'urar na'urar.Misali, tare da mitar juzu'i na 1MHz, kewayon mara ma'ana zai iya kaiwa zuwa 150m.

Daidaito da Kuskure

Madaidaici a cikin tsarin dTOF an iyakance shi ta hanyar nisa bugun jini na Laser, yayin da kurakurai na iya tasowa daga rashin tabbas daban-daban a cikin abubuwan, gami da direban Laser, amsa firikwensin SPAD, da daidaiton kewaye TDC.Dabarun kamar yin amfani da SPAD na iya taimakawa wajen rage waɗannan kurakurai ta hanyar kafa tushe don lokaci da nisa.

Hayaniya da Tsangwama

Dole ne tsarin dTOF ya yi tsayayya da amo na baya, musamman a cikin yanayin haske mai ƙarfi.Dabaru irin su yin amfani da pixels SPAD da yawa tare da matakan attenuation daban-daban na iya taimakawa wajen sarrafa wannan ƙalubalen.Bugu da ƙari, ikon dTOF don bambance tsakanin tunani kai tsaye da na hanyoyi da yawa yana haɓaka ƙarfinsa akan tsangwama.

Ƙimar sararin samaniya da Amfani da Wuta

Ci gaba a cikin fasahar firikwensin SPAD, kamar sauyawa daga gaban-gefen haske (FSI) zuwa hanyoyin haske na baya-baya (BSI), sun inganta ƙimar ɗaukar hoto da ingantaccen firikwensin.Wannan ci gaban, haɗe tare da yanayin pulsed na tsarin dTOF, yana haifar da ƙarancin wutar lantarki idan aka kwatanta da ci gaba da tsarin igiyar ruwa kamar iTOF.

Makomar dTOF Technology

Duk da manyan shingaye na fasaha da farashin da ke da alaƙa da fasahar dTOF, fa'idodinsa a cikin daidaito, kewayon, da ƙarfin ƙarfin ikon sa ya zama ɗan takara mai ban sha'awa don aikace-aikacen gaba a fannoni daban-daban.Kamar yadda fasaha na firikwensin da ƙirar lantarki ke ci gaba da haɓakawa, tsarin dTOF yana shirye don ɗauka mai faɗi, haɓaka sabbin abubuwa a cikin na'urorin lantarki na mabukaci, amincin mota, da ƙari.

Daga shafin yanar gizon02.02 TOF系统第二章 dTOF系统 - 超光 Mafi sauri fiye da haske (fiye da haske.net)
Mawallafin: Chao Guang

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