1. Chii chinonzi nguva-yekubhururuka (ToF) sensor?

Chii chinonzi kamera yenguva yekubhururuka? Ndiyo kamera inobata kubhururuka kwendege here? Zvine chekuita nendege kana ndege here? Zvakanaka, kuchiri kure!

ToF chiyero chenguva inotora kuti chinhu, chidimbu kana masaisai afambe chinhambwe. Wanga uchiziva here kuti sonar system yebat inoshanda? Iyo nguva-yekubhururuka sisitimu yakafanana!

Kune marudzi akawanda emasensa enguva-ye-ndege, asi mazhinji ndeenguva-ye-ndege makamera nemalaser scanner, ayo anoshandisa tekinoroji inonzi lidar (chiedza chekuona uye kurangirira) kuyera kudzika kwemapoinzi akasiyana mumufananidzo nekuipenya. ine infrared light.

Dhata inogadzirwa uye yakatorwa uchishandisa ToF sensors inobatsira zvikuru sezvo ichigona kupa vanofamba netsoka, chokwadi chemushandisi zvinoenderana nechiso, mepu yenzvimbo uchishandisa SLAM (panguva imwe chete yenzvimbo uye mepu) algorithms, nezvimwe.

Iyi sisitimu inonyanya kushandiswa zvakanyanya mumarobhoti, mota dzinozvityaira, uye kunyangwe ikozvino nharembozha yako. Semuenzaniso, kana uri kushandisa Huawei P30 Pro, Oppo RX17 Pro, LG G8 ThinQ, nezvimwewo, foni yako ine ToF kamera!

Kamera yeToF

2. Sensor yenguva-yekubhururuka inoshanda sei?

Ikozvino, tinoda kupa sumo pfupi yekuti sensor yenguva-yekubhururuka chii uye kuti inoshanda sei.

ToFmasensor anoshandisa diki lasers kuburitsa infrared mwenje, apo mwenje unozobuda unobvondoka kubva pane chero chinhu uye wodzokera kune sensor. Kubva pamusiyano wenguva pakati pekubuda kwechiedza uye kudzoka kune sensor mushure mekuratidzwa nechinhu, sensor inogona kuyera kureba pakati pechinhu uye sensor.

Nhasi, tichaongorora nzira mbiri mashandisiro anoita ToF nguva yekufamba kuona chinhambwe uye kudzika: kushandisa nguva yekupuruzira, uye kushandisa chikamu chekuchinja kweamplitude modulated mafungu.

Shandisa mapurusi ane nguva

Semuyenzaniso, inoshanda nekuvheneka chinangwa nelaser, yobva yayera chiedza chinotaridzwa nescanner, yobva yashandisa kumhanya kwechiedza kuburitsa chinhambwe chechinhu kunyatsoverenga nhambwe yafambwa. Pamusoro pezvo, mutsauko wenguva yekudzoka kwelaser uye wavelength unobva washandiswa kugadzira chaiyo yedhijitari 3D inomiririra uye pamusoro pezvinhu zvechinangwa, uye nekuona mepu kunze kwayo yega maficha.

Sezvauri kuona pamusoro, mwenje welaser unodzingwa uye wobva wabvongodza chinhu ichidzokera ku sensor. Nenguva yekudzoka kwelaser, makamera eToF anokwanisa kuyera madaro chaiwo munguva pfupi achipihwa kumhanya kwekufamba kwechiedza. (ToF inoshandura kuenda kure) Iyi ndiyo fomula inoshandiswa nemuongorori kusvika pachinhambwe chaicho chechinhu:

(kumhanya kwechiedza x nguva yekubhururuka) / 2

ToF inoshandura kuenda kure

Sezvauri kuona, iyo timer inotanga apo mwenje wakadzimwa, uye kana mugamuchiri agamuchira mwenje wekudzoka, iyo timer inodzosa nguva. Paunenge uchibvisa kaviri, "nguva yekubhururuka" yechiedza inowanikwa, uye kukurumidza kwechiedza kunogara kuripo, saka kureba kunogona kuverengwa nyore nyore uchishandisa fomu iri pamusoro. Nenzira iyi, mapoinzi ese ari pamusoro pechinhu anogona kutariswa.

Shandisa chikamu chekuchinja che AM wave

Zvadaro, theToFinogona zvakare kushandisa masaisai anoenderera mberi kuona kuchinjika kwechikamu chechiedza chinotaridza kuona kudzika uye chinhambwe.

Phase shift uchishandisa AM wave

Nekugadzirisa amplitude, inogadzira sinusoidal mwenje sosi ine frequency inozivikanwa, ichibvumira iyo detector kuona kuchinjika kwechikamu chechiedza chinoratidzwa uchishandisa inotevera fomula:

uko c ndiko kumhanya kwechiedza (c = 3 × 10 ^ 8 m/s), λ iwavelength (λ = 15 m), uye f ndiyo frequency, poindi imwe neimwe pa sensor inogona kuverengerwa nyore mukudzika.

Zvinhu zvese izvi zvinoitika nekukasira apo tinoshanda nekumhanya kwechiedza. Unogona here kufungidzira kurongeka uye kumhanya uko masensa anokwanisa kuyera nawo? Rega ndipe muenzaniso, chiedza chinofamba nekumhanya kwemakiromita 300,000 pasekondi, kana chinhu chiri kure newe 5m, musiyano wenguva pakati pechiedza chinobuda pakamera nekudzoka chinenge 33 nanoseconds, inongoenzana ne0.000000033 seconds! Wow! Tisingatauri, iyo data yakatorwa inokupa iyo chaiyo 3D inomiririra yedhijitari yepixel yega yega mumufananidzo.

Pasinei nenheyo inoshandiswa, kupa chiedza chinovhenekera nzvimbo yose inobvumira sensor kuti ione kudzika kwezvose. Mhedzisiro yakadai inokupa mepu yechinhambwe uko pixel yega yega inoisa chinhambwe kuenda kunzvimbo inoenderana nechiitiko. Unotevera muenzaniso weToF renji girafu:

Muenzaniso weToF renji girafu

Zvino zvatinoziva kuti ToF inoshanda, nei yakanaka? Sei uchiishandisa? Zvakanakirei? Usanetseke, kune akawanda mabhenefiti ekushandisa ToF sensor, asi hongu pane zvimwe zvinogumira.

3. Zvakanakira kushandisa nguva-ye-ndege sensors

Kuyera kwakarurama uye nokukurumidza

Kuenzaniswa nemamwe masensa ekure senge ultrasound kana lasers, nguva-ye-ndege sensors inokwanisa kugadzira mufananidzo we3D wechiitiko nekukurumidza. Semuenzaniso, kamera yeToF inogona kuita izvi kamwe chete. Kwete izvozvo chete, iyo ToF sensor inokwanisa kuona zvinhu nenzira kwayo munguva pfupi uye haina kukanganiswa nehunyoro, kudzvanywa kwemhepo uye tembiricha, zvichiita kuti ive yakakodzera kushandiswa kwemukati nekunze.

kureba

Sezvo ToF masensa anoshandisa lasers, ivo zvakare vanokwanisa kuyera marefu marefu uye marenji ane hupamhi hwechokwadi. ToF sensors inochinjika nekuti inokwanisa kuona zviri pedyo uye kure zvinhu zveese maumbirwo nehukuru.

Izvo zvakare zvinochinjika mupfungwa yekuti iwe unokwanisa kugadzirisa maoptics eiyo sisitimu kuti iite zvakaringana, kwaunogona kusarudza iyo inotumira uye inogamuchira mhando nemalenzi kuti uwane iyo yaunoda ndima yekuona.

Safety

Kunetsekana kuti laser kubva kuToFsensor ichakuvadza maziso ako? usanetseke! Mazhinji ma sensors eToF ikozvino anoshandisa yakaderera-simba infrared laser semwenje sosi uye inoityaira ine modulated pulses. Iyo sensor inosangana neClass 1 laser kuchengetedza zviyero kuti ive nechokwadi chekuti yakachengeteka kuziso remunhu.

mari inoshanda

Kuenzaniswa nemamwe 3D kudzika kwemhando yekuongorora matekinoroji akadai seyakagadziriswa mwenje kamera masisitimu kana laser rangefinders, ToF sensors yakachipa zvakanyanya kana ichienzaniswa navo.

Kunyangwe zvese izvi zvisingakwanisi, ToF ichiri yakavimbika uye inokurumidza nzira yekutora 3D ruzivo.

4. Kuganhurirwa kweToF

Kunyangwe ToF ine akawanda mabhenefiti, ine zvakare ine painogumira. Zvimwe zvezvipimo zveToF zvinosanganisira:

• Chiedza chakapararira

Kana nzvimbo dzakajeka kwazvo dziri padyo ne sensor yako yeToF, dzinogona kuparadzira mwenje wakawandisa mune yako inogamuchira uye kugadzira zvigadzirwa uye zvisingadiwe zviratidziro, sezvo sensor yako yeToF ichingoda kuratidza mwenje kana kuyerwa kwagadzirira.

• Mafungiro akawanda

Paunenge uchishandisa ToF sensors pamakona uye concave maumbirwo, anogona kukonzera zvisingadiwe ratidziro, sezvo mwenje unogona kubhururuka kakawanda, uchikanganisa kuyerwa.

• Ambient light

Kushandisa iyo ToF kamera kunze muchiedza chakajeka chezuva kunogona kuita kuti kushandiswa kwekunze kuve kwakaoma. Izvi zvinokonzerwa nekunyanya kusimba kwechiedza chezuva zvichiita kuti mapikseli e sensor akurumidze kuzara, zvichiita kuti zvisakwanise kuona chiedza chaicho chinoratidzwa kubva muchinhu.

• Mhedziso

ToF sensors uyeToF lenziinogona kushandiswa mune zvakasiyana-siyana zvekushandisa. Kubva ku3D Mepu, Maindasitiri otomatiki, Kuona Zvipingamupinyi, Kuzvityaira Mota, Zvekurima, Robhoti, Indoor Navigation, Gesture Recognition, Object scanning, Measurements, Surveillance to Augmented Reality! Iko kushandiswa kweToF tekinoroji hakuperi.

Iwe unogona kutibata isu kune chero zvidikanwi zveToF lenses.

Chuang An Optoelectronics inotarisa pane yakakwirira-tsanangudzo optical lenses kuti igadzire yakakwana yekuona mhando.

Chuang An Optoelectronics ikozvino yagadzira zvakasiyana-siyanaTOF lenzizvakaita se:

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