Tus qauv lub koob yees duab module captures video ntawm 30 los yog 60 ntas ib ob. Qhov ntawd txaus rau feem ntau kev soj ntsuam, kev sib tham, lossis kev ua haujlwm endoscopy. Tab sis qee qhov kev siv yuav tsum pom cov xwm txheej uas tshwm sim hauv lub qhov muag - ib lub mos txwv ya los ntawm huab cua, ib feem ntawm lub tshuab txav ntawm kev kub ceev, lossis cov khoom vibrating sai. Qhov no yog qhov uas lub koob yees duab ceev ceev tuaj rau hauv. Nws tuaj yeem sau tau ntawm ntau pua lossis ntau txhiab tus ntas ib ob, khov nrawm nrawm rau hauv cov duab meej, txheeb xyuas tau.
Dab tsi txhais tau lub koob yees duab ceev ceev?
Lub koob yees duab nrawm nrawm tsis yog qhov kev daws teeb meem siab dua ntawm lub koob yees duab ib txwm. Nws yog optimized rauncej tus nqintau dua li pixel suav. Cov yam ntxwv tseem ceeb muaj xws li:
Ncej tus nqi- Tsawg kawg 100 ntas ib ob (fps), feem ntau ncav cuag 500, 1000, lossis ntau dua fps ntawm kev daws teeb meem.
Ntiaj teb shutter- Tsis zoo li dov shutter, lub ntiaj teb shutter captures tag nrho cov duab nyob rau tib lub sij hawm, tshem tawm cov suab distortion.
Nyeem ntawv ceev- Lub sensor yuav tsum xa cov duab cov ntaub ntawv sai heev, feem ntau siv ntau txoj kab MIPI lossis lub siab-bandwidth parallel interface.
Kev daws teeb meem tsawg- Txhawm rau kom ua tiav kev kub ceev, qhov kev daws teeb meem yuav raug txo (piv txwv li, VGA lossis 720p) vim tias txav ntau lab pixels 1000 zaug ib ob yog qhov xav tau heev.
High-Speed vs. Standard Camera Modules
| Feature | Txheem Lub Koob Yees Duab Module | High-Speed Camera Module |
|---|---|---|
| Hom ncej tus nqi | 30-60 fps | 100–{1}} fps |
| Shutter hom | Rolling (common) | Ntiaj teb no (tseem ceeb) |
| Interface | USB 2.0 / 3.0, MIPI | MIPI (suav txoj kab siab), USB 3.0, Lub Koob Yees Duab Txuas |
| Kev daws teeb meem | 1080p, 4K | VGA, 720p, 1 MP |
| Siv li cas | Webcams, endoscopes, soj ntsuam | Kev soj ntsuam kev taw qhia, scientific imaging |
Nws ua haujlwm li cas hauv?
Lub koob yees duab ceev ceev pib nrog lub koob yees duab tshwj xeeb CMOS Module sensor. Tsis zoo li lub sensor uas nyeem cov kab sib txuas (dov shutter), lub siab ceev sensor nyeem tag nrho pixels ib txhij (lub ntiaj teb shutter). Qhov no tsis txhob skew thiab wobble thaum cov khoom txav nrawm.
Lub sensor kuj muaj qhov nrawm dua pixel nyeem ntawv Circuit Court. Qee cov sensors tuaj yeem tso tawm ntau dua 1000 thav duab ib ob ntawm qhov kev daws teeb meem qis dua los ntawm kev nyeem tsuas yog thaj tsam me me ntawm kev txaus siab (ROI). Qhov no yog hu ua "sub-sampling" lossis "window-readout".
Cov ntaub ntawv ces mus dhau lub high-bandwidth interface. Rau cov tshuab embedded, MIPI lub koob yees duab module nrog 4 txoj kab (txhua qhov khiav ntawm 1.5-2.5 Gbps) yog qhov ntau. Rau PC-based systems, USB lub koob yees duab module nrog USB 3.0 lossis USB 3.2 tuaj yeem ua haujlwm txog li 5-10 Gbps.
Daim ntawv thov ntawm High-Speed Camera Modules
Kev soj ntsuam kev lag luam- Saib xyuas cov kab ntau lawm, kuaj xyuas qhov tsis xws luag hauv cov khoom txav, lossis ntsuas kev vibration hauv tshuab. Tus qauv HD Lub Koob Yees Duab Module yuav plam cov lus tsa suab; ib tug high-ceev module freezes nws.
Kev Ua Si thiab Biomechanics- Txheeb xyuas lub viav vias golf, lub pitcher lub caj npab, lossis tus khiav txoj kev taug. Slow-motion replay qhia cov ntsiab lus tsis pom ntawm qhov muag liab qab.
Kev Tshawb Fawb Txog Kev Tshawb Fawb- Kawm txog cov dej dynamics, cov khoom tawg, lossis cov txheej txheem combustion. High-speed imaging captures cov xwm txheej uas tsuas yog ob peb milliseconds.
Kev kho mob thiab Endoscopy- Thaum lub koob yees duab endoscope feem ntau ua haujlwm ntawm 30-60 fps, qee qhov tshwj xeeb lub plawv lossis lub suab qaum siv cov kab ke siab dua los ntes cov ntaub so ntswg ceev. Lub koob yees duab endoscope siab ceev tuaj yeem pab kuaj xyuas lub suab qaum tuag tes tuag taw lossis lub plawv valve flutter.
Drones thiab Robotics- Lub koob yees duab module raspberry pi nrog lub siab ceev sensor tuaj yeem siv rau kev tiv thaiv kev tiv thaiv ntawm cov drones nrawm lossis rau kev tawm tswv yim ruaj khov.
High-Speed Camera Modules rau Embedded Systems
Rau cov neeg tsim khoom thiab cov tsim tawm, txoj hauv kev yooj yim tshaj plaws rau kev sim yog nrog USB lub koob yees duab module uas txhawb nqa tus nqi siab. Ntau USB lub koob yees duab module khoom (UVC raws) tuaj yeem ua 1080p ntawm 120 fps lossis 720p ntawm 240 fps. Lawv ua haujlwm plug-and-play ntawm PC.
Rau cov phiaj xwm embedded, module lub koob yees duab raspberry pi tuaj yeem nruab nrog lub siab ceev MIPI sensor. Raspberry Pi 4 lossis 5 muaj lub zog ua haujlwm txaus los ntes 720p ntawm 200 fps siv lub tshuab kaw thoob ntiaj teb zoo li OV9281 lossis IMX296. Tom qab ntawd koj tuaj yeem txheeb xyuas cov thav duab hauv lub sijhawm tiag tiag siv OpenCV lossis kaw lawv rau kev ua si qeeb.
Lub koob yees duab usb module kuj muaj nyob rau hauv high-speed variants. Cov no feem ntau siv hauv kev lag luam PC tsis pom kev uas lub khoos phis tawj lossis lub khoos phis tawj ua haujlwm ua haujlwm.
Trade-Offs thiab txwv
Teeb pom kev zoo- Cov koob yees duab ceev ceev xav tau ntau lub teeb ntau dua li cov koob yees duab txheem vim tias lub sijhawm raug rau ib lub thav duab luv heev. Yog tsis muaj zog illumination, daim duab yuav tsaus ntuj los yog nrov.
Cia- Cov ntaubntawv povthawj siv ntawm 1000 fps rau ib pliag tsuas yog tsim 1000 thav ntawv. Ib 720p video yuav siv ntau pua megabytes. Koj xav tau ceev ceev (SSD, NVMe) kom khaws cia.
Ua lub zog- Kev tshuaj xyuas ntau txhiab tus ntas ib ob yuav tsum muaj cov txheej txheem muaj zog lossis cov khoom siv tshwj xeeb.
Nqi- Muaj tseeb cov koob yees duab ceev ceev (nrog lub ntiaj teb kaw thiab siab bandwidth) yog kim dua li cov sensors zoo tib yam.
Xaiv lub koob yees duab ceev ceev
Ncej tus nqi xav tau- Rau kev txheeb xyuas lub tshuab qeeb (<10 m/s), 100–200 fps may be enough. For a bullet or explosion, you need 10,000+ fps.
Kev daws teeb meem- Feem ntau VGA (640 × 480) lossis 1 MP yog qhov txaus vim qhov kev kawm yuav me me. Kev daws teeb meem siab dua yuav txo tus nqi siab tshaj plaws.
Interface- Rau PC, USB 3.0 yooj yim. Rau embedded systems, MIPI muab latency qis dua thiab qis zog.
Shutter hom- Lub ntiaj teb shutter yog qhov yuav tsum tau txav cov khoom. Rolling shutter yuav ua rau skew.
CMOS Lub Koob Yees Duab Module- Saib rau cov sensors zoo li Sony IMX250 (2 MP, 163 fps), IMX252 (3 MP, 120 fps), lossis OmniVision OV9281 (1 MP, 120 fps ntawm tag nrho res, sai dua nrog ROI).
Piv txwv li: Tsim kom muaj Kev Tshawb Fawb Kev Tshawb Fawb
Piv txwv li, koj yuav tsum tau soj ntsuam cov springs txav raws lub conveyor ntawm 5 meters ib ob. Tus qauv HD Lub Koob Yees Duab Module (30 fps) yuav pom cov lus tsa suab plooj. Koj xaiv USB lub koob yees duab module uas tuaj yeem ua 720p ntawm 300 fps nrog lub ntiaj teb kaw.
Txuas nws mus rau ib qho kev lag luam PC. Sau ib tsab ntawv uas ntes cov thav duab tsis tu ncua. Thaum lub caij nplooj ntoos hlav dhau qhov ua rau, txuag 100 qhov kawg rau disk. Tom qab ntawd txheeb xyuas txhua tus ncej los ntsuas lub caij nplooj ntoos hlav ntev. Tus ncej siab ua kom ntseeg tau tias tsawg kawg ib daim duab ntse yuav ntes lub caij nplooj ntoos hlav zoo kawg nkaus.
Xaus
Lub koob yees duab ceev ceev tau txhais los ntawm nws lub peev xwm los ntes ntau pua lossis ntau txhiab tus ncej ib ob uas siv lub ntiaj teb kaw lub sensor thiab lub interface ceev. Nws yog ib qho tseem ceeb rau kev soj ntsuam kev lag luam, kev tshawb fawb tshawb fawb, thiab txhua daim ntawv thov uas cuam tshuam nrog kev nrawm nrawm. Thaum tus qauv endoscope lub koob yees duab module lossis USB lub koob yees duab module ua haujlwm rau cov yeeb yaj kiab txhua hnub, kev hloov pauv siab ceev qhib lub ntiaj teb ntawm kev tshuaj xyuas cov lus tsa suab. Rau cov neeg nyiam ua haujlwm, lub koob yees duab module raspberry pi nrog lub ntiaj teb kaw CMOS Lub Koob Yees Duab Module yog qhov chaw nkag nkag. Rau kev siv tshaj lij, kev mob siab rau siab ceev USB lub koob yees duab module cov khoom lag luam muab kev yooj yim plug-and-play. Txawm koj xav tau dab tsi, nkag siab tus ncej tus nqi, hom kaw, thiab interface yuav coj koj mus rau lub koob yees duab zoo.
Yog tias koj xav tau lub koob yees duab nrawm nrawm rau koj qhov project embedded, hu rau Sincere. Peb tsim thiab tsim CMOS Lub Koob Yees Duab Module kev daws teeb meem raws li koj qhov xav tau ceev thiab daws teeb meem.
