Nhau - Nheyo huru uye kushandiswa kweTOF (Nguva Yekufamba Nendege) System

Nyorera kuSocial Media Yedu Kuti Uwane Chiziviso Chinokurumidza

Nhevedzano iyi ine chinangwa chekupa vaverengi kunzwisisa kwakadzama uye kunofambira mberi kwehurongwa hweTime of Flight (TOF). Zviri mukati zvinofukidza ongororo yakazara yeTOF systems, kusanganisira tsananguro yakadzama yeTOF isina kunanga (iTOF) uye TOF yakananga (dTOF). Zvikamu izvi zvinoongorora maparamendi ehurongwa, zvakanakira nekuipira kwahwo, uye maalgorithms akasiyana-siyana. Chinyorwa ichi chinoongororawo zvikamu zvakasiyana zveTOF systems, zvakaita seVertical Cavity Surface Emitting Lasers (VCSELs), malenzi ekutumira nekugamuchira, masensa ekugamuchira akadai seCIS, APD, SPAD, SiPM, uye ma driver circuits akadai seASICs.

Nhanganyaya kuTOF (Nguva Yekubhururuka)

Nheyo Dzekutanga

TOF, zvinoreva Nguva Yekufamba Nendege, inzira inoshandiswa kuyera daro nekuverenga nguva inotora chiedza kuti chifambe daro rakati muchimiro chepakati. Nheyo iyi inonyanya kushandiswa muzviitiko zveTOF uye iri nyore. Maitiro acho anosanganisira chiedza chinoburitsa chiedza, nguva yacho ichinyorwa. Chiedza ichi chinobva chabuda pane chinangwa, chinotorwa neanogamuchira, uye nguva yekugamuchira inocherechedzwa. Musiyano wenguva idzi, unoratidzwa sa t, unosarudza daro (d = kumhanya kwechiedza (c) × t / 2).

Mhando dzeToF Sensors

Kune mhando mbiri huru dzemasensa eToF: optical neelectromagnetic. Masensa eOptical ToF, ayo akajairika, anoshandisa ma light pulses, anowanzo kuve mu infrared range, pakuyera daro. Ma pulses aya anoburitswa kubva ku sensor, obva aratidza chinhu, uye odzokera ku sensor, uko nguva yekufamba inoyerwa uye inoshandiswa kuverenga daro. Kusiyana neizvi, masensa e electromagnetic ToF anoshandisa ma electromagnetic waves, akadai se radar kana lidar, kuyera daro. Anoshanda nepfungwa yakafanana asi anoshandisa nzira yakasiyana yekuyera daro.kuyera daro.

Mashandisirwo eToF Sensors

Ma sensor eToF anogona kushandiswa zvakasiyana-siyana uye akabatanidzwa muminda yakasiyana-siyana:

Marobhoti:Inoshandiswa pakuona zvipingamupinyi uye kufamba-famba. Semuenzaniso, marobhoti akaita seRoomba neBoston Dynamics' Atlas anoshandisa makamera eToF ekudzikira pakugadzira mapu enzvimbo dzavanogara uye kuronga mafambiro adzo.

Masisitimu Ekuchengetedza:Zvinoshandiswa mukuona mafambiro emotokari, maaramu anokonzeresa, kana kuvhura makamera.

Indasitiri yeMotokari:Yakabatanidzwa muhurongwa hwekubatsira mutyairi hwekugadzirisa cruise control uye kudzivirira kudonha kwemotokari, zvichiwedzera kuwanda mumhando itsva dzemotokari.

Munda wezvekurapa: Inoshanda mukuongorora mifananidzo isina kukuvadza uye kuongororwa, senge optical coherence tomography (OCT), ichigadzira mifananidzo yetishu ine resolution yepamusoro.

Zvigadzirwa zvemagetsi zvevatengi: Yakabatanidzwa mumafoni, mapiritsi, uye malaptop kuti ionekwe sechiso, biometric authentication, uye gesture recognition.

Madhoni asina madhoni:Inoshandiswa pakufambisa, kudzivirira tsaona, uye kugadzirisa matambudziko ekuchengetedza ruzivo rwevanhu uye endege

Kugadzirwa kweSisitimu yeTOF

Sisitimu yakajairika yeTOF ine zvinhu zvakakosha zvakati wandei kuti ikwanise kuyerwa daro sezvakatsanangurwa:

· Chinotumira (Tx):Izvi zvinosanganisira chiedza chelaser, kunyanyaVCSEL, dhiraivha yeASIC yekufambisa laser, uye zvikamu zve optical zvekudzora mwenje zvakaita se collimating lenses kana diffractive optical elements, uye mafirita.
· Mugamuchiri (Rx):Izvi zvinosanganisira malenzi nemafirita panzvimbo inogamuchirwa, masensa akaita seCIS, SPAD, kana SiPM zvichienderana neTOF system, uye Image Signal Processor (ISP) yekugadzirisa data rakawanda kubva ku receiver chip.
·Kutarisira Simba:Kutarisira kugadzikanaKudzora magetsi eVCSEL uye voltage yakakwira yeSPAD kwakakosha, zvichida manejimendi yakasimba yesimba.
· Chikamu cheSoftware:Izvi zvinosanganisira firmware, SDK, OS, uye application layer.

Magadzirirwo aya anoratidza kuti dara relaser, rinobva kuVCSEL uye rakagadziriswa nezvikamu zve optical, rinofamba sei muchadenga, rinoburitsa chiedza kubva pachinhu, uye rinodzokera kune rinogamuchira. Kuverenga nguva mukuita uku kunoratidza ruzivo rwedaro kana kudzika. Zvisinei, magadzirirwo aya haafukidze nzira dzeruzha, dzakadai seruzha rwunokonzerwa nezuva kana ruzha rwenzira dzakawanda kubva pakuratidzira, izvo zvichakurukurwa gare gare munhevedzano.

Kupatsanurwa kweTOF Systems

Masisitimu eTOF anonyanya kurongwa nehunyanzvi hwawo hwekuyera daro: direct TOF (dTOF) uye indirect TOF (iTOF), imwe neimwe ine nzira dzakasiyana dzehardware uye algorithmic. Nhevedzano iyi inotanga yatsanangura misimboti yayo isati yaongorora zvakanakira zvayo, matambudziko, uye maparamendi esystem.

Pasinei nepfungwa iri nyore yeTOF - kuburitsa chiedza chezuva uye kuona kudzoka kwacho kuti uverenge daro - kuoma kuri mukusiyanisa chiedza chinodzoka kubva kuchiedza chemuchadenga. Izvi zvinogadziriswa nekuburitsa chiedza chakajeka zvakakwana kuti uwane chiyero chepamusoro chechiratidzo-ku-ruzha uye kusarudza marefu akakodzera emwenje kuti uderedze kupindira kwechiedza chemuchadenga. Imwe nzira ndeyekuchinjisa chiedza chinobuda kuti chionekwe kana chadzoka, zvakafanana nezviratidzo zveSOS netochi.

Nhevedzano iyi inoenderera mberi nekuenzanisa dTOF ne iTOF, ichikurukura musiyano wavo, zvakanakira, nematambudziko zvakadzama, uye inowedzera kuisa muzvikamu masisitimu eTOF zvichienderana nekuoma kweruzivo rwavanopa, kubva pa1D TOF kusvika pa3D TOF.

dTOF

Direct TOF inoyera zvakananga nguva yekubhururuka kwephoton. Chikamu chayo chikuru, Single Photon Avalanche Diode (SPAD), inonzwisisika zvakakwana kuti ione maphoton rimwe chete. dTOF inoshandisa Time Correlated Single Photon Counting (TCSPC) kuyera nguva yekusvika kwephoton, ichigadzira histogram yekuona daro ringangovepo zvichibva pakuwanda kwenguva yakati rebei.

iTOF

Indirect TOF inoverenga nguva yekubhururuka zvichibva pamusiyano wechikamu pakati pemafungu anoburitswa neanogamuchirwa, kazhinji ichishandisa masaini anoenderera mberi kana masaini ekushandura pulse. iTOF inogona kushandisa magadzirirwo e sensor yemufananidzo akajairwa, ichiyera simba rechiedza nekufamba kwenguva.

iTOF inopatsanurwazve kuita continuous wave modulation (CW-iTOF) uye pulse modulation (Pulsed-iTOF). CW-iTOF inoyera phase shift pakati pemafungu e sinusoidal anoburitswa neanogamuchirwa, nepo Pulsed-iTOF inoverenga phase shift ichishandisa square wave signals.

Kuverengazve:

Wikipedia. (nd). Nguva yekubhururuka. Yakatorwa kubvahttps://en.wikipedia.org/wiki/Time_of_flight
Boka reSony Semiconductor Solutions. (nd). ToF (Nguva Yekufamba Nendege) | Tekinoroji Yakajairika yeMasensa Emifananidzo. Yakatorwa kubvahttps://www.sony-semicon.com/en/technologies/tof
Microsoft. (2021, Kukadzi 4). Sumo kuMicrosoft Time Of Flight (ToF) - Azure Depth Platform. Yakatorwa kubvahttps://devblogs.microsoft.com/azure-depth-platform/intro-to-microsoft-time-of-flight-tof
ESCATEC. (2023, Kurume 2). MaSensor Enguva Yekubhururuka (TOF): Ongororo Yakadzama uye Mashandisirwo. Zvakatorwa kubvahttps://www.escatec.com/news/time-of-flight-tof-sensors-an-in-depth-overview-and-applications

Kubva pawebhusaitihttps://faster-than-light.net/TOFSystem_C1/

rakanyorwa nemunyori: Chao Guang

Chiziviso:

Tinozivisa kuti mimwe yemifananidzo inoratidzwa pawebhusaiti yedu yakatorwa kubva paInternet neWikipedia, nechinangwa chekusimudzira dzidzo nekugovana ruzivo. Tinoremekedza kodzero dzepfungwa dzevagadziri vese. Kushandiswa kwemifananidzo iyi hakusi kwekutsvaga purofiti.

Kana muchifunga kuti chero zviri mukati zviri kushandiswa zvinotyora kodzero dzenyu dzekodzero, ndapota taurai nesu. Tinoda kutora matanho akakodzera, kusanganisira kubvisa mifananidzo kana kupa humbowo hwakakodzera, kuti tive nechokwadi chekuti mitemo nemitemo yepfuma yepfungwa inotevedzwa. Chinangwa chedu ndechekuchengetedza puratifomu ine zviri mukati, yakarurama, uye inoremekedza kodzero dzepfuma yepfungwa dzevamwe.

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