Ohauru ki ā Mātou Pāpāho Hapori mō te Pou Whakaoho
Ko te whāinga o tēnei raupapa he whakarato i te māramatanga hōhonu me te ahunga whakamua ki te pūnaha Wā Rere (TOF) ki ngā kaipānui. Kei roto i te ihirangi he tirohanga whānui o ngā pūnaha TOF, tae atu ki ngā whakamārama taipitopito o ngā TOF ā-kore (iTOF) me ngā TOF tika (dTOF). Ka rukuhia e ēnei wāhanga ngā tawhā pūnaha, ō rātou painga me ō rātou ngoikoretanga, me ngā momo rauropi. Ka tūhuratia hoki e te tuhinga ngā wāhanga rerekē o ngā pūnaha TOF, pērā i ngā Taiaho Tuku Mata Poutū (VCSEL), ngā karāhe tuku me te whiwhi, ngā pūoko whiwhi pērā i te CIS, APD, SPAD, SiPM, me ngā ara iahiko taraiwa pērā i te ASIC.
He Kupu Whakataki ki te TOF (Te Wā Rere)
Ngā Mātāpono Taketake
Ko te TOF, arā, ko te Time of Flight, he tikanga e whakamahia ana hei ine i te tawhiti mā te tatau i te wā e haere ai te mārama i tētahi tawhiti i roto i tētahi reo. Ka whakamahia nuitia tēnei mātāpono i roto i ngā horopaki TOF whatu, ā, he tino māmā noa iho. Ko te tukanga he pūtake mārama e tuku ana i tētahi hihi mārama, me te wā e tukuna ana. Kātahi ka whakaatahia tēnei mārama mai i tētahi ūnga, ka hopukina e te kaiwhiwhi, ā, ka tuhia te wā e whiwhihia ana. Ko te rerekētanga o ēnei wā, e tohuhia ana ko t, ka whakatau i te tawhiti (d = te tere o te mārama (c) × t / 2).
Ngā momo pūoko ToF
E rua ngā momo matua o ngā pūoko ToF: te whatu me te hikohiko. Ko ngā pūoko ToF whatu, he mea noa ake, ka whakamahi i ngā pāoro mārama, i te nuinga o te wā i roto i te whānuitanga whero-whero, hei ine i te tawhiti. Ka tukuna ēnei pāoro mai i te pūoko, ka whakaata mai i tētahi mea, ka hoki ki te pūoko, ka inehia te wā haere, ā, ka whakamahia hei tatau i te tawhiti. He rerekē, ka whakamahi ngā pūoko ToF hikohiko i ngā ngaru hikohiko, pērā i te radar, te lidar rānei, hei ine i te tawhiti. He rite tonu te kaupapa o tā rātou mahi engari he rerekē te reo e whakamahia ana mōte ine i te tawhiti.
Ngā Whakamahinga o ngā Pūoko ToF
He maha ngā whakamahinga o ngā pūoko ToF, ā, kua whakauruhia ki roto i ngā momo mara:
Robotics:Hei whakamahi mā te kimi arai me te whakatere. Hei tauira, ka whakamahia e ngā karetao pērā i a Roomba me Atlas o Boston Dynamics ngā kāmera hohonu ToF hei mahere i ō rātou taiao me te whakamahere i ngā nekehanga.
Ngā Pūnaha Haumarutanga:He mea noa i roto i ngā pūoko nekehanga mō te kimi i ngā kaikōhuru, te whakaoho i ngā whakaoho, te whakahohe rānei i ngā pūnaha kāmera.
Ahumahi Motuka:Kua whakauruhia ki roto i ngā pūnaha āwhina-taraiwa mō te whakahaere tere urutau me te karo i ngā tukinga, ā, kei te piki haere te kitea i roto i ngā tauira waka hou.
Marae HauoraE whakamahia ana i roto i ngā mahi whakaahua me ngā tātaritanga kore-whakaekenga, pērā i te tomography coherence tomography (OCT), e whakaputa ana i ngā whakaahua kiko taumira teitei.
Ngā Hikohiko KaihokoKua whakauruhia ki roto i ngā waea atamai, papa, me ngā pona mō ngā āhuatanga pēnei i te mohio kanohi, te manatoko koiora, me te mohio tohu.
Ngā waka rererangi iti:Whakamahia mō te whakatere, te karo i ngā tukinga, me te aro atu ki ngā āwangawanga tūmataiti me te rererangi.
Hanganga Pūnaha TOF
He maha ngā wāhanga matua o tētahi pūnaha TOF noa hei whakatutuki i te ine tawhiti e ai ki te whakaahuatanga:
· Tuku (Tx):Kei roto i tēnei he pūtake mārama taiaho, ko te nuinga heVCSEL, he ara iahiko taraiwa ASIC hei akiaki i te taiaho, me ngā wāhanga whatu mō te whakahaere hihi pērā i ngā karāhe whakakotahi, ngā huānga whatu wehewehe rānei, me ngā tātari.
· Kaiwhiwhi (Rx):Kei roto i tēnei ko ngā karu arotahi me ngā tātari i te pito whiwhi, ngā pūoko pēnei i te CIS, SPAD, SiPM rānei i runga i te pūnaha TOF, me te Pūtukatuka Tohu Whakaahua (ISP) hei tukatuka i ngā raraunga nui mai i te maramara kaiwhiwhi.
·Whakahaere Mana:Te whakahaere i te pumauHe mea tino nui te whakahaere i te auhiko mō ngā VCSEL me te ngaohiko teitei mō ngā SPAD, e hiahiatia ana he whakahaere hiko pakari.
· Papa Pūmanawa:Kei roto i tēnei ko te pūmanawa, te SDK, te pūnaha whakahaere, me te paparanga taupānga.
E whakaatu ana te hoahoanga i te haere o te hihi laser, e ahu mai ana i te VCSEL, ā, kua whakarerekētia e ngā wāhanga whatu, i roto i te wāhi, ka whakaata mai i tētahi mea, ka hoki atu ki te kaiwhiwhi. Mā te tatau wā i roto i tēnei tukanga ka whakaatu i ngā mōhiohio tawhiti, hohonu rānei. Heoi, kāore tēnei hoahoanga e kapi i ngā ara haruru, pērā i te haruru i puta mai i te rā, i te haruru maha-ara rānei mai i ngā whakaata, ka matapakihia ēnei i muri mai i te raupapa.
Te Whakarōpūtanga o ngā Pūnaha TOF
Ko ngā pūnaha TOF ka whakarōpūtia i runga i ā rātou tikanga ine tawhiti: TOF tika (dTOF) me TOF kore tika (iTOF), he rerekē ngā taputapu me ngā huarahi taurangi o ia pūnaha. I te tuatahi, ka whakamāramahia e te raupapa ō rātou mātāpono i mua i te ruku ki roto i tētahi tātaritanga whakatairite o ō rātou painga, wero, me ngā tawhā pūnaha.
Ahakoa te āhua māmā o te mātāpono o te TOF – te tuku i te pā o te mārama me te kite i tōna hokinga mai ki te tatau i te tawhiti – ko te uauatanga kei roto i te wehewehe i te mārama e hoki mai ana i te mārama ā-taiao. Ka arohia tēnei mā te tuku i te mārama kanapa kia eke ki te ōwehenga tohu-ki-haruru teitei, me te whiriwhiri i ngā roangaru tika hei whakaiti i te pokanoa o te mārama taiao. Ko tētahi atu huarahi ko te whakakōwae i te mārama e tukuna ana kia taea ai te wehewehe i te hokinga mai, he rite ki ngā tohu SOS me te rama.
Ka whakarite tonu te raupapa i te dTOF me te iTOF, ka matapakihia ō rāua rerekētanga, ō rāua painga, me ngā wero i roto i ngā taipitopito, ā, ka whakarōpūhia anō hoki ngā pūnaha TOF i runga i te uaua o ngā mōhiohio e whakaratohia ana e rāua, mai i te 1D TOF ki te 3D TOF.
dTOF
Ka ine tika a Direct TOF i te wā rere o te photon. Ko tōna wāhanga matua, ko te Single Photon Avalanche Diode (SPAD), he tairongo ki te kite i ngā photon takitahi. Ka whakamahia e dTOF te Time Correlated Single Photon Counting (TCSPC) hei ine i te wā e tae mai ai ngā photon, me te hanga i tētahi histogram hei whakatau i te tawhiti tino pea i runga i te auau teitei rawa atu o tētahi rerekētanga wā motuhake.
iTOF
Ka tatauhia e te TOF ā-kore te wā rere i runga i te rerekētanga ā-wāhanga i waenga i ngā ngaru e tukuna ana me ngā ngaru e whiwhihia ana, e whakamahi ana i ngā tohu ngaru tonu, i ngā tohu whakarerekētanga pāorooro rānei. Ka taea e te iTOF te whakamahi i ngā hoahoa pūoko whakaahua paerewa, e ine ana i te kaha o te mārama i roto i te wā.
Kua wehea anō te iTOF ki te whakarerekētanga ngaru tonu (CW-iTOF) me te whakarerekētanga pao (Pulsed-iTOF). Ka ine te CW-iTOF i te nekehanga ā-wāhanga i waenga i ngā ngaru sinusoidal kua tukuna me ngā ngaru kua whiwhi, ko te Pulsed-iTOF ia ka tatau i te nekehanga ā-wāhanga mā te whakamahi i ngā tohu ngaru tapawhā.
Pānui Anō:
- Wikipedia. (nd). Te wā rere. I tangohia mai ihttps://en.wikipedia.org/wiki/Te Wā_o_te_Rere
- Sony Semiconductor Solutions Group. (nd). ToF (Wā Rere) | Hangarau Noa o ngā Pūoko Whakaahua. I tangohia mai ihttps://www.sony-semicon.com/en/technologies/tof
- Microsoft. (2021, 4 o Pēpuere). He kupu whakataki ki te Microsoft Time Of Flight (ToF) - Azure Depth Platform. I tangohia mai ihttps://devblogs.microsoft.com/azure-depth-platform/intro-to-microsoft-time-of-flight-tof
- ESCATEC. (2023, Maehe 2). Ngā Pūoko Wā Rere (TOF): He Tirohanga Whānui me ngā Whakamahinga. I tangohia mai ihttps://www.escatec.com/news/time-of-flight-tof-sensors-an-in-depth-overview-and-applications
Mai i te whārangi tukutukuhttps://faster-than-light.net/TOFSystem_C1/
nā te kaituhi: Chao Guang
Whakakape:
E whakaatu ana mātou i konei ko ētahi o ngā whakaahua e whakaaturia ana i runga i tā mātou paetukutuku i kohia mai i te Ipurangi me Wikipedia, me te whāinga ki te whakatairanga i te mātauranga me te tiritiri mōhiohio. E whakaute ana mātou i ngā mana pupuri hinengaro o ngā kaihanga katoa. Kāore te whakamahinga o ēnei whakaahua i te whakaarohia hei whai hua arumoni.
Ki te whakapono koe kei te takahi tetahi o ngā ihirangi i whakamahia i tō mana pupuri, tēnā whakapā mai ki a mātou. E tino hiahia ana mātou ki te mahi i ngā mahi tika, tae atu ki te tango i ngā whakaahua, te whakarato rānei i te tohu tika, kia tutuki ai ngā ture me ngā whakaritenga mō te mana pupuri hinengaro. Ko tā mātou whāinga he pupuri i tētahi tūāpapa e whai kiko ana i ngā ihirangi, e tika ana, ā, e whakaute ana i ngā mana pupuri hinengaro o ētahi atu.
Tena koa whakapā mai ki a mātou i te wāhitau īmēra e whai ake nei:sales@lumispot.cnKa whakapau kaha mātou ki te mahi tonu ina tae mai tētahi whakamōhiotanga, ā, ka oati mātou ki te mahi tahi 100% ki te whakatau i aua take.
Wā tuku: Hakihea-18-2023