Txheeb xyuas thiab kho kom zoo ua rau cov teeb meem flicker

Koj yuav tau muaj cov kab ntsug hauv koj lub koob thaij duab ntse, paub txog cov kev phom sij txav chaw, lossis tau paub txog cov kev phom sij ntawm kev cuam tshuam nrog LED flicker.
Koj tuaj yeem muaj kev sib raug zoo uas ua rau koj pom qhov kev pom kev txawv txav ntawm kev pom, tshwj xeeb tshaj yog nyob rau hauv kev sib raug zoo mus rau cov khoom txav.
Kab lus no yuav elucidate cov hau kev rau kev ntsuas flicker qib hauvLED teeb pom kev zoothiab cov kev coj ua uas muaj.
Kev ntsuas ntawm LED flicker thiab kev ntsuas
LED flicker fundamentlyflirisly tshwm sim los ntawm kev hloov sai ntawm cov LED ntawm thiab tawm xeev. Txawm hais tias tau tsim los flicker ntawm tus nqi imperceptible, qee cov neeg nkag siab cov neeg nkag siab yuav pom cov flicker siv hauv qeeTus cojcov tshuab yuav tsum tau yooj yim thiab muaj kev phom sij.

Kev Ntsuas Rau Flicker

Txoj kev tshawb fawb tshaj plaws los ntsuas qhov ntau thiab cov flicker yog ua haujlwm tshwj xeeb cov twj paj nruag lossis lub ntsuas hluav taws xob. Nrog kev yuav cov nqi ua ntej ntau pua nyiaj rau ib chav, qhov no yog pov thawj rau feem ntau ntawm cov neeg siv kev txhawj xeeb txog flicker hauv lawvLub teeb teeb.
Peb tawm tswv yim kom nrawm dua thiab muaj txiaj ntsig los ntsuas cov flicker nrog tsuas yog ib qho iPhone thiab nws cov duab ua ke.
Qhib lub koob yees duab daim ntawv thov thiab xaub txoj cai ob zaug kom qhib lub "Slo-mo" video hom. Tom qab, ncaj qha lub koob yees duab ntawm lub teeb pom kev zoo thiab pib sau cia. Tso cov ntaubntawv povthawj siv tom qab 2-3}} vib nas this, thiab koj tau ua tiav!
Tam sim no, kev saib xyuas tsis pom tseeb ntawm daim vis dis aus koj nyuam qhuav sau cia. Qhov tseem ceeb flicker nyob rau hauv lub teeb ci tseem ceeb yuav tshwm sim uas yog qhov tseem ceeb flicker lossis rov muaj teeb meem rov qab ua yeeb yaj kiab qeeb. Thaum tsis muaj cov flicker, lub peev xwm teeb pom kev yuav tsum tau nthuav tawm cov khoom ruaj khov thiab tsis tu ncua cov qib teeb sib luag thoob plaws hauv cov zaj yeeb yaj kiab qeeb.
Tsis ntev los no txhim kho hauv smartphone tau zoo tshem cov kab tsaus uas tau tshwm sim hauv cov duab. Qhov kev ua kom cov kev sib tsoo tshiab ntawm kev yees duab tab sis dhau kev ploj zuj zus nws qhov kev ua tau zoo hauv kev kuaj mob flicker.

Los ntawm whence yog tus flicker keeb kwm?

Flicker nyob rau hauv ib LED tau los ntawm ob qhov chaw: AC zog lossis PWM. Paub qhov chaw ntawm flicker yog qhov tseem ceeb rau kev daws teeb meem zoo.
Qhov pib ua rau yog qhov muaj kev hloov pauv hloov pauv hauv lwm qhov hluav taws xob tam sim no. Hloov chaw tam sim no, raws li qhia los ntawm nws cov nomenclature, ntawm kev sib zog thiab tsis zoo voltage thiab tam sim no nyob rau hauv ib tug sinusoidal waveform nrog ib zaus ntawm {{0} {hertz. Lub 120 V AC cov lus qhia voltage hais txog nws lub hauv paus txhais tau square (RMS); Qhov tseeb tiag, nws yuav txawv ntawm -170 v thiab 170 v.
LED khoom sivPuas yog intrinsically ua rau ncaj qha tam sim no (DC) cov tswv yim, rendering txoj kev hloov tshiab tam sim no (AC) WaveForm inciencely. Yog li ntawd, cov khoom siv hluav taws xob yuav tsum tau "kho" thiab ruaj khov kho lub hom phiaj.
Ib qho system LED tuaj yeem ua haujlwm nrog ib qho yooj yim ac tswv yim, tab sis yuav luv luv nres lossis txo qis cov hluav taws xob tawm ntawm txhua ntawm ob lub "hav uas" tshwm sim txhua lub voj voog.Ib qho teeb tsa LEDTej zaum oscillate nruab nrab ntawm nws ntawm thiab tawm xeev ntawm ib zaus ntawm 100-120 lub sij hawm ib ob.
 

Dab tsi ntsuas yuav raug coj los daws covTus cojflickering qhov teeb meem?

Peb tau hais txog qhov tseem ceeb ntawm kev txheeb xyuas qhov chaw ntawm flicker (AC fais fab lossis PWM) kom paub tseeb tias cov teeb pom kev zoo xav tau kev hloov kho lossis hloov.
Yog hais tias tus flicker keeb kwm los ntawm cov noob LED, nws yog qhov tsim nyog los hloov nws nrog lub zog tshiab ua kom txhim kho DC tam sim no rau kev ua haujlwm ntawm LED. Thaum nrhiav ib qhoLED Teeb, qhia meej cov ntawv sau npe uas yog "flicker pub dawb" thiab tshuaj xyuas lawv cov tshuaj flicker:
Flicker feem pua ​​- ib feem pua ​​metric uas tseem ceeb tias feem yus sib xws ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus braritness qib (amplitude) thaum lub sijhawm flicker. Ib lub teeb liab incandescent feem ntau nthuav tawm tus flicker tus nqi ntawm 10% {2}}}}
Flicker Performance index - ib tug metric uas yog hais txog kev siv thiab sijhawm nyob rau hauv uas ib tug coj tsim lub teeb dhau ntawm nws cov khoom tso tawm nruab nrab thoob plaws hauv flicker voj voog. Lub teeb ci incandescent muaj posesses fluicker index of 0. 04.
Flicker zaus - qhov zaus ntawm cov flicker voj voog recurs txhua thib ob, kom muaj nuj nqis hauv Hertz (HZ). Feem ntau LED Qij ua haujlwm ntawm ib zaus ntawm {1}} hz, sib txuas nrog ntau zaus ntawm lub teeb liab. Rau qhov muag teev nrog nce ntau zaus, qhov cuam tshuam ntawm kev sib piv flicker feem pua ​​thiab flicker Performance index qhov tseem ceeb yuav ploj mus vim lawv lub sijhawm hloov nrawm.
Feem ntau ntawm cov LED qij flicker ntawm ib zaus ntawm 100-120 hz. Ntawm qhov zaus no, Ieee 1789 qhia txog kev nyab xeeb ("Qis pheej hmoo") flicker feem pua ​​ntawm 8%, nrog 3% yuav tsum tau muab pov tseg tag nrho cov neeg flicker.
Yog hais tias tus flicker keeb kwm los ntawm PWM Devmer lossis maub los, nws yuav tsim nyog los hloov lub PWM DURM DURM DURM DURM DURM DURM DIVERM DIVERM DEMACER UNIT. Lub txiaj ntsig zoo yog tias cov flickering yog tej zaum tsis yog ntaus nqi rau lubLED stripsLos yog lwm yam kev siv, yog li koj cov nuj nqis hloov yuav raug kaw rau lub PWM DEVMER / maub los.
Lub ntsej muag tseem ceeb rau PWM flicker yog nws cov zaus, raws li nws feem ntau ua pov thawj 100% flicker. Yog li ntawd, thaum nrhiav cov flicker-dawb pwm daws, xyuas kom muaj qhov ntsuas ntsuas zaus. Rau ib qho kev daws teeb meem nkaus dawb
Cov qauv zoo li IEEE 1789 Qhia meej tias PWM teeb cov chaw ua haujlwm ntawm 3 {{{}} hz zoo tshem tawm cov kev cuam tshuam flicker. Ib qho kom zoo ntawm kev tsa lub zaus saum toj no 20 kHz yog kev tshem tawm ntawm kev nthuav tawm cov suab nrov lossis cov suab nrov los ntawm cov khoom siv fais fab. Cov nquag muaj suab feem ntau feem ntau peakitically ntawm 20, {6}} hz rau feem ntau cov tib neeg; Yog li, kev faib tawm ib zaus ntawm 25,000 hz tuaj yeem txo cov kev pheej hmoo ntawm cov neeg uas muaj lub suab nrov lossis lub suab nrov nrov, xws li sau cia studios.