Cov Lus Qhia Kawg rau Kev Kho Kom Zoo Nkauj Lub Koob Yees Duab Module

Hauv lub ntiaj teb niaj hnub no, cov koob yees duab digital tau dhau los ua ib qho uas neeg siv ntau heev nrog cov thev naus laus zis tshiab ntawm tus nqi qis tshaj plaws. Ib qho ntawm cov tsav tsheb tseem ceeb tom qab kev qhia txog cov thev naus laus zis tshiab yog CMOS image sensors. Lub koob yees duab CMOS module tau pheej yig dua rau kev tsim khoom piv rau lwm tus. Nrog rau cov yam ntxwv tshiab uas tau qhia hauv cov koob yees duab niaj hnub nrog Cmos sensors, kev thaij duab meej meej yog qhov tseem ceeb.Lub chaw tsim khoom siv lub koob yees duab sab saum tojtau los nrog lub koob yees duab uas muaj kev ua tau zoo dua thiab tus nqi siab dua ntawm kev ntes cov duab. CMOS sensors xyuas kom nyeem cov circuitry nrog lub photosensitive feature. Pixel architecture hauv niaj hnub no kuj hloov pauv radically thiab pab ntes cov duab hauv qhov zoo heev. Complementary metal-oxide-semiconductor image sensors hloov lub teeb mus rau hauv electrons, yog li ntawd hauv cov khoom siv niaj hnub no, USB lub koob yees duab module tau qhia rau nws cov yam ntxwv siab.

Lub Koob Yees Duab Module yog dab tsi?

Ib lub Koob Yees Duab Module lossis Compact Camera Module yog lub koob yees duab zoo kawg nkaus uas sib xyaw nrog chav tswj hwm hluav taws xob, lub lens, lub processor teeb liab digital, thiab lub Interface xws li USB lossis CSI. Lub Koob Yees Duab Module tau siv dav thoob plaws ntau yam kev siv uas suav nrog:

• Kev tshuaj xyuas kev lag luam
• Tsheb thiab Kev Ruaj Ntseg
• Kev Muag Khoom thiab Nyiaj Txiag
• Tsev & Kev Lom Zem
• Kev Noj Qab Haus Huv & Kev Noj Haus

Nrog rau kev txhim kho ntawm cov thev naus laus zis thiab cov chaw siv internet, qhov ceev ntawm lub network tau zoo dua qub thiab ua ke nrog kev qhia txog cov khoom siv thaij duab tshiab. Lub Koob Yees Duab Module tau siv dav hauv Smartphone, Tablet, PC, Robots, Drones, Khoom Siv Kho Mob, Khoom Siv Hluav Taws Xob, thiab ntau lwm yam. Kev vam meej hauv kev siv tshuab thaij duab tau ua rau muaj kev qhia txog 5 Megapixels, 8 Megapixels, 13 Megapixels, 20 Megapixel, 24 Megapixel thiab ntau dua.

Lub koob yees duab module muaj cov khoom hauv qab no xws li:

• Lub koob yees duab
• Lub lens
• Kev Ua Haujlwm Digital Signal
• Cov lim dej infrared
• Lub voj voog luam tawm yooj ywm lossis lub rooj tsavxwm luam tawm
• Tus Txuas

Lub Lens:

Qhov tseem ceeb ntawm txhua lub koob yees duab yog lub lens thiab nws ua lub luag haujlwm tseem ceeb hauv qhov zoo ntawm lub teeb uas cuam tshuam rau lub sensor duab thiab yog li txiav txim siab qhov zoo ntawm cov duab tso tawm. Kev xaiv lub lens zoo rau koj daim ntawv thov yog ib qho kev tshawb fawb, thiab kom meej meej nws yog ntau dua ntawm optics. Muaj ntau yam kev ntsuas los ntawm qhov kev xav pom kev pom uas yuav tsum tau xav txog rau kev xaiv lub lens kom ua tau raws li qhov xav tau ntawm daim ntawv thov, uas cuam tshuam rau kev xaiv lub lens, xws li cov khoom sib xyaw ntawm lub lens, kev tsim kho ntawm lub lens yas lossis iav lens, qhov ntev ntawm qhov chaw, F.No, Field of View, Tob ntawm Field, TV distortion, Relative Illumination, MTF thiab lwm yam.

Duab Sensor

Lub sensor duab yog lub sensor uas ntes thiab xa cov ntaub ntawv siv los ua duab. Lub sensor yog qhov tseem ceeb rauLub Koob Yees Duab Moduletxhawm rau txiav txim siab qhov zoo ntawm daim duab. Txawm nws yog lub koob yees duab Smartphone lossis lub koob yees duab digital, Sensors ua lub luag haujlwm tseem ceeb. Tam sim no, CMOS sensor nrov dua thiab pheej yig dua los tsim dua li CCD sensor.

Hom sensor - CCD vs CMOS

CCD sensor - Qhov zoo ntawm CCD yog qhov rhiab heev, suab nrov tsawg, thiab qhov sib piv ntawm lub teeb liab mus rau lub suab nrov loj. Tab sis cov txheej txheem tsim khoom nyuaj, tus nqi siab thiab kev siv hluav taws xob. CMOS sensor - Qhov zoo ntawm CMOS yog nws qhov kev koom ua ke siab (kev koom ua ke AADC nrog lub processor teeb liab, nws tuaj yeem txo qis me me), kev siv hluav taws xob tsawg thiab tus nqi qis. Tab sis lub suab nrov loj heev, qhov rhiab heev tsawg thiab qhov xav tau siab ntawm lub teeb ci.

DSP:

Cov teeb liab digital kuj tau kho kom zoo dua los ntawm kev siv cov algorithms lej nyuaj. Qhov tseem ceeb tshaj plaws, cov teeb liab raug xa mus rau qhov chaw cia khoom, lossis nws tuaj yeem xa mus rau cov khoom tso saib.

DSP qauv framework suav nrog

• ISP
• JPEG encoder
• USB tswj hwm lub cuab yeej

Qhov sib txawv ntawm USB lub koob yees duab module thiab sensor lub koob yees duab module / CMOS lub koob yees duab moduleUSB 2.0 Lub Koob Yees Duab Module:

Lub koob yees duab USB 2.0 module sib txuas lub koob yees duab thiab lub cuab yeej ntes video ncaj qha, thiab tom qab ntawd txuas rau HOST SYSTEM los ntawm USB interface. Tam sim no lub koob yees duab digital module ntawm CAMERA kev ua lag luam yog raws li cov ntaub ntawv tshiab xa mus rau USB2.0 interface. Khoos phis tawj thiab lwm yam khoom siv mobile txuas ncaj qha los ntawm USB interface tsuas yog ntsaws thiab ua si. Cov UVC tsis txaus siab USB2.0 koob yees duab modules no sib xws nrog Windows (DirectShow) thiab Linux (V4L2) software thiab tsis xav tau cov tsav tsheb.

• USB Video Class (UVC) Txheem
• Qhov siab tshaj plaws ntawm kev xa xov ntawm USB2.0 yog 480Mbps (piv txwv li 60MB / s)
• Yooj yim thiab pheej yig
• Plug thiab ua si
• Kev sib raug zoo siab thiab ruaj khov
• Ntau yam dynamic siab dua

Tom qab ua tiav los ntawm cov software ntawm tus qauv Operating system sib xws nrog UVC cov qauv, lub teeb liab digital raug tso tawm rau lub displayer.

USB 3.0 Lub Koob Yees Duab Module:

Piv rau USB 2.0 lub koob yees duab module, USB 3.0 lub koob yees duab ua rau xa tau sai dua, thiab USB 3.0 sib xws nrog USB2.0 interface.

• Qhov siab tshaj plaws ntawm kev xa xov bandwidth ntawm USB3.0 yog txog li 5.0Gbps (640MB / s)
• 9 pins txhais piv rau USB2.0 4 pins
• Siab sib xws nrog USB 2.0
• Kev sib txuas lus SuperSpeed

Cmos Lub Koob Yees Duab Module (CCM)

CCM lossis Coms Camera Module tseem hu ua Complementary Metal Oxide Semiconductor Camera Module muaj nws lub cuab yeej tseem ceeb rau ntau yam kev siv xws li cov khoom siv koob yees duab nqa tau. Thaum piv rau cov koob yees duab ib txwm muaj, CCM muaj ntau yam ntxwv uas suav nrog

• Kev ua kom me me
• Kev siv hluav taws xob tsawg
• Duab siab
• Tus nqi qis

Lub hauv paus ntsiab lus ua haujlwm ntawm USB Camera module

Daim duab kho qhov muag uas tsim los ntawm qhov xwm txheej los ntawm lub lens (LENS) raug tso tawm rau ntawm qhov chaw ntawm lub sensor duab (SENSOR), thiab tom qab ntawd hloov mus ua lub teeb liab hluav taws xob, uas tom qab hloov A/D (Analog/Digital) mus ua lub teeb liab duab digital. Nws raug xa mus rau lub chip ua haujlwm digital (DSP) rau kev ua tiav, thiab tom qab ntawd xa mus rau lub khoos phis tawj los ntawm I/O interface rau kev ua tiav, thiab tom qab ntawd daim duab tuaj yeem pom los ntawm qhov tso saib (DISPLAY).

Yuav ua li cas los ntsuam xyuas USB koob yees duab thiab CCM (CMOS koob yees duab module)? USB Koob Yees Duab: (Amcap software piv txwv li)

Kauj Ruam 1: Txuas lub koob yees duab nrog lub koob yees duab USB.

Kauj Ruam 2: Txuas lub USB cable nrog PC lossis Xov Tooj Ntawm Tes los ntawm OTG adapter.

Amcap:

Qhib AMCap thiabXaiv koj lub koob yees duab module:

Xaiv qhov kev daws teeb meem ntawm Kev Xaiv >> Video Capture Pin

Kho lub koob yees duab yav tom ntej zoo li Brightness, Contract. White Balance .. ntawm Kev Xaiv >> Video Capture Filter

Amcap ua rau koj tuaj yeem thaij duab thiab video.

CCM:

CCM nyuaj dua vim tias qhov interface yog MIPI lossis DVP thiab DSP raug cais nrog lub module, Siv Dothinkey adapter board thiab daughter-board los sim yog qhov tshwm sim hauv kev tsim khoom:

Dothinkey adapter board:

txuas lub koob yees duab module nrog lub rooj tsavxwm ntxhais (pic-2).

Qhib cov software kuaj

Kev nkag siab txog cov txheej txheem ntawm lub koob yees duab module

Nrog ntau pua txhiab daim ntawv thov module lub koob yees duab, cov qauv OEM lub koob yees duab modules tsis tuaj yeem ua tau raws li txhua qhov kev xav tau tshwj xeeb, yog li cov txheej txheem kev hloov kho los nrog qhov tsim nyog thiab nrov, kho vajtse thiab firmware hloov kho, suav nrog qhov loj me ntawm module, lub kaum sab xis ntawm lub lens, hom tsis siv neeg / kho kom pom tseeb thiab Lens lim, los txhawb kev tsim kho tshiab.

Kev tsim kho tsis rov ua dua suav nrog kev tshawb fawb, kev txhim kho, kev tsim qauv rau kev tsim cov khoom tshiab; qhov no kuj suav nrog cov nqi ua ntej. Qhov tseem ceeb tshaj plaws, NRE yog tus nqi ib zaug xwb uas tuaj yeem cuam tshuam nrog kev tsim qauv, kev tsim khoom ntawm kev tsim qauv tshiab, lossis cov khoom siv. Qhov no kuj suav nrog qhov sib txawv rau cov txheej txheem tshiab. Yog tias tus neeg siv khoom pom zoo rau NRE, ces tus neeg muag khoom yuav xa daim duab kos rau kev lees paub tom qab them nyiaj.

Kev cai lij choj raws li qhov xav tau

1. Koj tuaj yeem muab cov duab kos lossis cov qauv, nrog rau thov cov ntaub ntawv thiab tsim los ntawm peb cov neeg ua haujlwm engineering.
2. Kev sib txuas lus
3. Peb yuav sib txuas lus nrog koj kom meej meej kom paub meej txog qee yam khoom koj xav tau thiab sim teeb tsa cov khoom tsim nyog tshaj plaws rau koj raws li koj xav tau.
4. Kev Tsim Qauv Qauv
5. Txheeb xyuas cov ntsiab lus ntawm cov qauv tsim thiab lub sijhawm xa khoom. Sib txuas lus txhua lub sijhawm kom ntseeg tau tias kev nce qib zoo.
6. Kev Ntsuas Qauv
7. Kev kuaj thiab hnub nyoog ntawm koj daim ntawv thov, cov txiaj ntsig ntawm kev xeem tawm tswv yim, tsis tas yuav hloov kho, kev tsim khoom loj.

Cov lus nug uas koj yuav tsum nug ua ntej kho lub koob yees duab moduleDab tsi yog cov kev cai?

Lub koob yees duab USB moduleyuav tsum muaj cov kev cai hauv qab no. Lawv yog cov khoom tseem ceeb tshaj plaws uas ntxiv qhov pom tseeb ntawm daim duab thiab lub hauv paus ntsiab lus ua haujlwm zoo. Cov khoom tau teev tseg zoo los ntawm kev txuas ntawm CMOS thiab CCD integrated circuit. Nws yuav tsum ua haujlwm raws li tus neeg siv xav tau thiab ua haujlwm ua lub koob yees duab yooj yim rau tus neeg siv. Nws yuav txuas nrog ntau yam uas ntxiv qhov kev daws teeb meem zoo meej rau lub koob yees duab xav tau rau kev txuas USB.

• Lub lens
• lub sensor
• DSP
• PCB

Koj xav tau qhov kev daws teeb meem twg los ntawm lub koob yees duab USB?

Kev daws teeb meem yog ib qho parameter siv los ntsuas qhov ntau ntawm cov ntaub ntawv hauv daim duab bitmap, feem ntau yog qhia ua dpi (dot ib nti). Hauv lwm lo lus, qhov kev daws teeb meem ntawm lub koob yees duab yog hais txog lub peev xwm ntawm lub koob yees duab los tshuaj xyuas daim duab, uas yog, tus lej ntawm cov pixels ntawm lub sensor duab ntawm lub koob yees duab. Qhov kev daws teeb meem siab tshaj plaws yog qhov loj ntawm lub koob yees duab lub peev xwm los daws cov duab ntawm qhov siab tshaj plaws, tus lej siab tshaj plaws ntawm cov pixels hauv lub koob yees duab. Qhov kev daws teeb meem 30W pixel CMOS tam sim no yog 640 × 480, thiab qhov kev daws teeb meem ntawm 50W-pixel CMOS yog 800 × 600. Ob tus lej ntawm kev daws teeb meem sawv cev rau cov chav ntawm tus lej ntawm cov ntsiab lus hauv qhov ntev thiab dav ntawm daim duab. Qhov piv ntawm daim duab digital feem ntau yog 4: 3.

Hauv kev siv tiag tiag, yog tias lub koob yees duab siv rau kev sib tham hauv web lossis kev sib tham video, qhov kev daws teeb meem siab dua, qhov kev siv bandwidth ntawm lub network ntau dua. Yog li ntawd, cov neeg siv khoom yuav tsum tau them sai sai rau qhov no, thiab yuav tsum xaiv lub pixel uas haum rau lawv cov khoom raws li lawv xav tau.

Lub kaum sab xis ntawm lub zeem muag (FOV)?

Lub kaum sab xis FOV yog hais txog qhov ntau uas lub lens tuaj yeem npog tau. (Lub lens yuav tsis npog cov khoom thaum nws tshaj lub kaum sab xis no.) Lub lens koob yees duab tuaj yeem npog ntau yam xwm txheej, feem ntau yog qhia los ntawm lub kaum sab xis. Lub kaum sab xis no hu ua lub lens FOV. Thaj chaw uas tus neeg raug npog los ntawm lub lens ntawm lub dav hlau focal los tsim cov duab pom yog thaj chaw pom ntawm lub lens. FOV yuav tsum txiav txim siab los ntawm qhov chaw siv, Lub kaum sab xis loj dua, thaj chaw pom dav dua, thiab rov qab los.

Lub koob yees duab loj rau koj daim ntawv thov

Cov kev ntsuas tseem ceeb uas tau suav nrog lub koob yees duab module yog qhov ntev, uas txawv ntau tshaj plaws rau ntau yam kev xav tau sib txawv

nyob ntawm seb qhov loj thiab hom ntawv kho qhov muag. Nws muaj thaj chaw pom thiab qhov ntev ntawm lub lens rau kev nkag mus nrog kev xam qhov ntev ntawm cov khoom. Nws cuam tshuam nrog qhov ntev ntawm lub lens rov qab thiab suav nrog lub lens zoo meej rau hom ntawv. Qhov loj ntawm lub lens yuav tsum haum rau koj daim ntawv thov thiab nyob ntawm ib qho ib txwm muaj. Txoj kab uas hla sib txawv raws li cov sensors loj dua thiab cov cuab yeej siv nrog lub lens npog. Nws nyob ntawm daim ntawv ntawm vignetting lossis tsaus ntuj ntawm lub ces kaum ntawm cov duab.

Muaj ntau pua txhiab daim ntawv thov module lub koob yees duab, qhov loj ntawm module sawv cev rau qhov sib txawv tshaj plaws. Peb cov engineers muaj lub hwj chim los tsim cov qhov loj me uas yuav ua haujlwm zoo tshaj plaws rau koj qhov project.

Tus nqi ntawm cov khoom lag luam (EAU)

Tus nqi ntawm cov khoom lag luam nyob ntawm qhov kev qhia tshwj xeeb. Lub koob yees duab USB nrog EAU me me tsis yog qhia tias yog ib qho kev cai tshwj xeeb. nrog rau kev thov tas li thiab kev cai tshwj xeeb xws li Lens, qhov loj me, sensor, lub koob yees duab module tshwj xeeb yog koj qhov kev xaiv zoo tshaj plaws.

Xaiv lub koob yees duab module zoo

Feem ntau, feem ntau ntawm cov neeg siv khoom yuav tsom mus raulub koob yees duab module zootias ib tug neeg yuav tsis paub tias yuav siv hom lens twg ntawm no. Muaj ntau lub tswv yim tau siv ntawm no los ua kom cov neeg paub txog kev xaiv lub lens zoo meej thiab xaiv lub koob yees duab module zoo meej. Lub lens koj yuav xaiv yuav nyob ntawm cov txheej txheem uas koj yuav siv. Vim muaj ntau yam kev daws teeb meem ntawm lub sensor thiab DSP, thiab cov lens sib txawv, thiab cov teebmeem ntawm lub koob yees duab module kuj txawv heev. Qee lub koob yees duab tuaj yeem siv rau hauv ntau daim ntawv thov, tab sis qee qhov tsuas yog siv tau rau hauv qee daim ntawv thov tshwj xeeb kom tau txais cov txiaj ntsig zoo tshaj plaws. Qee lub koob yees duab theem hnub qub tuaj yeem ntes cov duab hauv qhov chaw tsis muaj teeb pom kev zoo, tab sis ntawm tus nqi siab.

Cov txiaj ntsig zoo:

Yog tias koj tau teeb tsa lub koob yees duab module lossis lub koob yees duab hauv koj chaw ua haujlwm lossis chav pw me me, ces tsuas yog 2.8 hli focal ntev yuav txaus rau lub sijhawm ntawd. Yog tias koj xav teeb tsa lub koob yees duab module lossis lub koob yees duab hauv koj lub vaj tom qab txhais tau tias nws yuav tsum xav tau 4mm txog 6mm focal ntev. Qhov focal ntev yog nce ntxiv vim qhov chaw loj dua. Koj yuav xav tau 8mm lossis 12mm focal ntev ces koj tuaj yeem siv qhov no hauv koj lub Hoobkas lossis txoj kev vim qhov chaw yuav siab heev.

Thaum koj xav xaiv lub koob yees duab module rau lub teeb NIR ces qhov kev teb spectral ntawm lub koob yees duab module yuav raug txhais los ntawm cov khoom siv lens lossis cov khoom siv sensor. Cov sensors yuav yog silicon-based tag nrho thiab nws yuav qhia qhov kev teb zoo rau lub teeb NIR hauv txoj kev zoo tshaj plaws. Piv rau lub teeb pom kev lossis 850nm, qhov rhiab heev yuav me dua rau 940nm. Txawm hais tias koj tau txais qhov no koj tseem tuaj yeem tau txais daim duab zoo heev. Lub tswv yim tseem ceeb tshaj plaws uas koom nrog hauv cov txheej txheem no yuav tsim lub teeb txaus rau lub koob yees duab rau lub hom phiaj ntawm kev tshawb pom. Koj yuav tsis paub meej tias lub koob yees duab tuaj yeem raug ua haujlwm thaum twg thiab tuaj yeem ntes lub sijhawm zoo meej yuav txawv heev. Yog li ntawd, lub teeb liab yuav raug xa mus rau ib qho tshwj xeeb thiab ib tus tuaj yeem xaiv lub koob yees duab module zoo.

Xaus lus

Los ntawm kev sib tham saum toj no, lub koob yees duab USB module muaj tag nrho cov haujlwm thiab sib sau ua ke nrog lub module zoom tsis siv neeg. Lub hom phiaj ruaj khov ntawm lub koob yees duab USB module muaj lub lens, lub hauv paus iav, lub voj voog sib xyaw ua ke, thiab lwm yam. Cov neeg siv yuav tsum pom qhov txawv ntawm USB thiab MIPI lub koob yees duab modules.

A lub koob yees duab moduleNws yog qhov tsim nyog dua rau kev tsim cov ntawv thov tshiab. Vim tias lub koob yees duab module uas tau kho kom haum rau koj tuaj yeem tsim raws li qhov yuav tsum tau ua. Los ntawm kev txhim kho ntawm lub koob yees duab peb tuaj yeem kawm: Ua ntej, pixel siab dua (13 lab, 16 lab), lub koob yees duab zoo (CMOS), kev sib kis ceev ceev (USB2.0, USB3.0, thiab lwm yam interfaces ceev) lub koob yees duab yuav yog qhov sib txawv yav tom ntej; Qhov thib ob, kev kho kom haum thiab kev tshwj xeeb (tsuas yog siv ua lub cuab yeej video input), ntau yam kev ua haujlwm (nrog rau lwm yam haujlwm, xws li lub flash drive nrog, qhov sib txawv ntawm cov koob yees duab digital, nws kuj tseem xav tau tias lub koob yees duab tuaj yeem muaj lub luag haujlwm ntawm lub scanner yav tom ntej), thiab lwm yam. Qhov thib peb, kev paub ntawm tus neeg siv yog qhov tseem ceeb, yooj yim dua rau tus neeg siv, yooj yim dua rau kev siv, thiab ntau yam kev siv tau zoo yog cov kev xav tau tiag tiag ntawm cov neeg siv khoom.