Dab tsi yog cov txiaj ntsig ntawm LED zaub ci ci?Raws li qhov nruab nrab ntawm kev tshaj tawm, LED cov ntxaij vab tshaus feem ntau tshwm sim hauv peb lub neej, thiab qhov kev thov rau kev saib xyuas cov ntaub ntawv txheeb ze rau LED cov ntxaij vab tshaus kuj tau nce ntxiv.Cia peb tham txog yuav ua li cas txheeb xyuas qhov ci ntawm LED zaub.
Ua ntej tshaj plaws, cia peb nkag siab tias qhov ci ntawm LED zaub yog dab tsi:
Lub ci ci ntawm LED lub teeb-emitting raj yog hais txog qhov siv ntawm lub teeb tawm los ntawm lub cev luminous, hu ua lub teeb siv, qhia hauv MCD.Lub luminous ci ntsa iab ntawm LED zaub yog ib qho kev qhia dav dav, uas yog hais txog qhov kev qhia dav dav ntawm tag nrho cov luminous flux (luminous flux) ntawm tag nrho cov LED modules ib chav tsev ntim thiab qhov illuminance ntawm ib qho kev ncua deb.
LED zaub brightness: Nyob rau hauv ib qho kev taw qhia, lub luminous siv rau ib chav tsev.Chav tsev ntawm qhov ci yog cd / m2.
Lub ci ci yog proportional rau tus naj npawb ntawm LEDs ib cheeb tsam thiab qhov ci ntawm LED nws tus kheej.Lub brightness ntawm LED yog ncaj qha proportional rau nws tsav tam sim no, tab sis nws lub neej yog inversely proportional rau square ntawm nws tam sim no, yog li ntawd tus tsav tam sim no yuav tsis tau ntau tshaj nyob rau hauv caum ntawm brightness.Nyob rau tib lub ntsiab lus ceev, qhov ci ntawm LED zaub nyob ntawm cov khoom siv, ntim thiab qhov loj ntawm LED nti siv.Lub nti loj dua, qhov ci ntsa iab ntau dua;conversely, qhov qis dua brightness.
Yog li dab tsi yog qhov ci ntsa iab ntawm qhov ci ntsa iab rau lub vijtsam?
Cov kev cai dav dav dav dav yog raws li hauv qab no:
(1) Sab hauv LED zaub:> 800CD / M2
(2) Semi-hauv tsev LED zaub:> 2000CD / M2
(3) Sab nraum zoov LED zaub (sab sab qab teb thiab sab qaum teb):> 4000CD / M2
(4) Sab nraum zoov LED zaub (sab qaum teb thiab sab qab teb):> 8000CD / M2
Qhov zoo ntawm LED luminous raj muag hauv khw tsis sib xws, thiab feem ntau ntawm qhov ci ci tsis tuaj yeem lav.Cov neeg siv khoom raug dag los ntawm qhov tshwm sim ntawm shoddy.Cov neeg feem coob tsis muaj peev xwm paub qhov txawv qhov ci ntawm LED luminous raj.Yog li ntawd, cov tub lag luam hais tias qhov ci ci yog tib yam li qhov ci.Thiab nws nyuaj rau kev paub qhov txawv ntawm qhov muag liab qab, yog li yuav ua li cas thiaj paub nws?
1. Yuav ua li cas txheeb xyuas qhov ci ntawm LED zaub
1. Ua kom muaj 3V DC fais fab mov uas yooj yim txuas rau lub teeb-emitting diode ntawm koj tus kheej.Nws yog qhov zoo tshaj los siv lub roj teeb ua kom nws.Koj tuaj yeem siv ob lub pob roj teeb, muab tso rau hauv ib lub raj yas me me thiab coj tawm ob qhov kev sojntsuam raws li qhov zoo thiab qhov tsis zoo.Tus Tsov tus tw yog ncaj qha mus rau hauv ib qho kev hloov nrog shrapnel.Thaum siv, qhov zoo thiab qhov tsis zoo sojntsuam sib raug rau qhov zoo thiab qhov tsis zoo ntawm lub teeb-emitting diode.Ntawm qhov tsis zoo tus pin, nias thiab tuav tus tes hloov qhov kawg, thiab lub luminous raj yuav tawm lub teeb.
2. Qhov thib ob, muab cov photoresistor thiab cov digital multimeter los ua ib lub teeb metering yooj yim.Coj tus photoresistor nrog ob lub xov hlau nyias thiab txuas ncaj qha mus rau ob tus cwj mem ntawm digital multimeter.Lub multimeter muab tso rau ntawm 20K txoj hauj lwm (nyob ntawm tus photoresistor, Sim ua kom qhov kev nyeem ntawv kom raug raws li qhov ua tau).Nco ntsoov tias qhov ntsuas tus nqi yog qhov ua tau tus nqi ntawm tus photoresistor.Yog li ntawd, lub teeb ci dua, tus nqi me dua.
3. Siv lub teeb ci LED-emitting diode thiab siv 3V ncaj qha tam sim no los teeb nws.Lub teeb-emitting lub taub hau yog tig mus thiab ze rau lub photosensitive nto ntawm lub photoresistor txuas.Lub sijhawm no, multimeter nyeem kom paub qhov txawv ntawm qhov ci ntawm LED.
2. Qhov ci ci kev ntxub ntxaug yog hais txog qhov ci ntsa iab ntawm cov duab uas tuaj yeem ua rau tib neeg lub qhov muag los ntawm qhov tsaus ntuj mus rau qhov dawb tshaj plaws.
Cov qib grey ntawm LED zaub screen yog siab heev, uas tuaj yeem ncav cuag 256 lossis txawm tias 1024. Txawm li cas los xij, vim muaj qhov tsis txaus ntseeg ntawm tib neeg lub qhov muag rau qhov ci, cov qib grey no tsis tuaj yeem lees paub tag nrho.Hauv lwm lo lus, nws muaj peev xwm hais tias ntau qib nyob ib sab ntawm grey nplai tib neeg lub qhov muag zoo ib yam.Ntxiv mus, lub peev xwm ntawm qhov muag txawv ntawm ib tus neeg mus rau lwm tus.Rau cov ntxaij vab tshaus LED, qhov siab dua ntawm tib neeg lub qhov muag pom, qhov zoo dua, vim tias cov duab tso tawm yog rau tib neeg pom tom qab tag nrho.Qhov ntau dua qhov ci ci ntawm tib neeg lub qhov muag tuaj yeem paub qhov txawv, qhov loj dua qhov chaw xim ntawm LED zaub, thiab qhov muaj peev xwm ntau dua rau kev nthuav tawm cov xim nplua nuj.Lub ci ci kev ntxub ntxaug tuaj yeem kuaj nrog software tshwj xeeb.Feem ntau, lub vijtsam zaub tuaj yeem ncav cuag qib 20 lossis ntau dua, txawm tias nws yog qib zoo.
3. Kev xav tau rau qhov ci thiab saib lub kaum ntse ntse:
Lub ci ci ntawm sab hauv LED zaub yuav tsum siab tshaj 800cd / m2, thiab qhov ci ntawm sab nraum zoov cov xim tag nrho yuav tsum siab tshaj 1500cd / m2 kom ntseeg tau tias kev ua haujlwm ntawm LED zaub, txwv tsis pub cov duab tso tawm yuav tsis meej vim tias brightness tsawg dhau.Qhov ci ntsa iab yog txiav txim siab los ntawm qhov zoo ntawm LED tuag.Qhov loj ntawm lub kaum sab xis saib ncaj qha txiav txim siab cov neeg tuaj saib ntawm LED zaub, yog li qhov loj dua qhov zoo dua.Qhov pom lub kaum ntse ntse yog txiav txim siab los ntawm cov pob tuag.