- ib qho parameter uas feem ntau underestimated, tseem ua rau muaj teeb meem feem ntau nyob rau hauv tiag tiag tej yaam num
Thaum xaiv lub koob yees duab lossis ntsuas qhov kev daws teeb meem,Ua haujlwm nrug (WD)feem ntau yog ib qho ntawm thawj cov lus nug nug:
Lub koob yees duab yuav tsum nyob deb npaum li cas ntawm qhov khoom?
Puas yuav hloov lub lens cuam tshuam qhov kev ncua deb?
FOV, kev daws teeb meem, thiab pixel raug ua haujlwm ua ke li cas?
Qhov tseeb tiag, ntau qhov haujlwm tsis ua haujlwm vim yog lub sensor lossis duab zoo -
tab sis vimqhov chaw ua hauj lwm nyob deb tau miscalculated thaum pib.
1. Dab tsi yog "ua haujlwm nrug"?
Cias muab,ua hauj lwm nyob debyog:
qhov tseeb deb ntawm lub lens pem hauv ntej mus rau lub hom phiaj khoom
Nws ncaj qha cuam tshuam peb yam tseem ceeb:
Field of View (FOV)
Duab sharpness thiab ua kom pom tseeb kam rau ua
Txawm hais tias tus neeg kho tshuab qauv txawm ua tau
2. Ib txoj hauv kev los xam nws
Hauv qhov project engineering tiag tiag, peb feem ntau tsis pib los ntawm "xws li nyob deb."
Peb pib los ntawmtxhais cov kev cai, ces ua hauj lwm rov qab.
Yam tsawg kawg, koj yuav tsum paub:
Sensor loj
Lens focal ntev
Yam khoom loj (qhov chaw koj yuav tsum tau npog)
Qhov feem ntau siv approximation yog:
Ua hauj lwm nrug ≈ (Object Size × Focal Length) ÷ Sensor Size
Ib qho piv txwv yooj yim:
Sensor dav: 6.4 hli (1/2.7 ")
Lens focal ntev: 4 mm
Yam khoom dav: 320 mm
Kwv yees ua haujlwm nrug:
(320 × 4) ÷ 6.4 ≈ 200 mm
Qhov kev suav ceev no twb pab teb cov lus nug tseem ceeb:
👉 Qhov kev teeb tsa no puas muaj tseeb rau kev tsim qauv?
3. Vim li cas nws tseem ua tsis tau txawm tias tus lej zoo?
Qhov no yog ib qho teeb meem uas kuv pom hauv cov haujlwm tiag tiag.
Feem ntau, cov mis tsis yog lawm -
nws yogtiag tiag - ntiaj teb yam uas tau saib tsis taus, xws li:
Nominal focal ntev vs. zoo focal ntev
Npog iav thiab IR lim hloov txoj kev kho qhov muag
Yam tsawg kawg nkaus tsom qhov deb txwv
Mechanical tolerances, kev vibration, thiab thermal drift
Tsis muaj focus margin
Tias yog vim li cas hauv kev siv tswv yim:
Kev suav tsis yog qhov xaus - nws tsuas yog thawj kauj ruam xwb.
4. Ib qho ntxiv engineering-cov lus pom zoo
Yog tias koj ua haujlwm rau:
Tshuab pom
Kev tshuaj xyuas kev lag luam
Robotics los yog AGVs
Kev ruaj ntseg lossis AI-raws li lub zeem muag
Kuv qhov kev paub yog qhov no:
Ua haujlwm nrug, FOV, thiab pixel raug yuav tsum tau soj ntsuam ua ke,
tsis raws li kev sib cais.
5. Kev xav kawg
Paub yuav ua li cas xam qhov deb ntawm kev ua hauj lwm tsis nyuaj.
Qhov kev sib tw tiag tiag yogsiv nws kom raug ua ntej cov khoom tiav.
Yog tias koj tab tom xaiv lub koob yees duab module
los yog tawm tsam kom sib npaug WD, FOV, thiab focal ntev,
Kuv ib txwm zoo siab los pauv qhov tiag -lub ntiaj teb cov lus qhia thiab kev daws teeb meem.
