Vim li cas peb cov teeb LED tsis ci ntsa iab? Kev tshuaj xyuas ntawm lub hauv paus ntsiab lus ntawm cov thev naus laus zis tsav tsheb tsis ci ntsa iab

I. Kev Taw Qhia: Cov Kev Phom Sij Zais Cia ntawm Kev Teeb Ci thiab Cov Teeb Meem Tseem Ceeb ntawm Cov Neeg Siv
1.1Dab tsi yog qhov flickering nyhuv ntawm LED teeb strips?
Flicker yog hais txog qhov xwm txheej uas qhov ci ntsa iab ntawm lub teeb LED hloov pauv sai thiab tsis tu ncua dhau sijhawm. Nws lub ntsiab lus yog lub teeb thiab tsaus ntuj hloov pauv los ntawm kev tsav tsheb tsis ruaj khov. Qhov kev hloov pauv no yuav tsis pom tseeb rau lub qhov muag liab qab lossis yuav tshwm sim ua qhov flicker sib txawv. Raws li International Commission on Illumination (CIE) TN 006-2016 tus qauv, thaum lub sijhawm flicker tshaj 125Hz, lub qhov muag tib neeg feem ntau tsis tuaj yeem pom nws, tab sis latent flicker tseem yuav muaj cov teebmeem tsis zoo.

1.2 Tej Yam Phom Sij ntawm Cov Teeb Meem Stroboscopic rau Lub Neej thiab Kev Noj Qab Haus Huv
Qhov teeb ci ntsa iab qis (100Hz – 120Hz) yuav ua rau qhov muag qaug zog, mob taub hau, qhov muag qhuav thiab lwm yam tsis xis nyob. Kev raug nws ntev ntev yuav ua rau lub qhov muag hnyav dua. Qhov teeb ci ntsa iab siab (>1kHz), txawm hais tias qhov muag tsis pom, tuaj yeem ua rau muaj kab txaij thiab cov kab tsaus thaum lub sijhawm thaij duab ceev ceev, thiab kuj tseem yuav cuam tshuam rau lub cev lub cev, txwv tsis pub melatonin tso tawm, thiab cuam tshuam rau kev pw tsaug zog zoo. Rau cov neeg uas muaj teeb meem photosensitivity, qhov teeb ci ntsa iab qis kuj tseem yuav ua rau muaj kev pheej hmoo ntawm kev mob qaug dab peg. Rau cov menyuam yaus, kev raug mus sij hawm ntev yuav ua rau qhov kev loj hlob ntawm myopia sai dua.

1.3 Vim li cas feem ntau cov teeb ci ntsa iab?
Muaj ntau lub teeb LED hauv khw muaj kev pheej hmoo ntawm kev ntsais muag. Cov laj thawj tseem ceeb tuaj yeem muab faib ua peb lub ntsiab lus: Ua ntej, kev tswj tus nqi. Cov khoom tsis zoo txo ​​cov capacitors lim thiab siv cov chips tsav tsheb pheej yig, uas tsis tuaj yeem tswj cov voltage ripples; Qhov thib ob, kev sib raug zoo tsis zoo nrog dimming. Cov zaus dimming PWM ib txwm muaj qis dhau, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej qis-ci, ua rau pom tseeb flickering; Qhov thib peb, tsim qhov tsis zoo. Lub zog muab hluav taws xob thiab lub teeb strip tsis phim zoo, thiab qhov poob voltage ntawm cov xov ntev tsis tau them rov qab, ua rau tsis txaus tam sim no ruaj khov.

II. Kev Tshawb Fawb Tseem Ceeb: Cov Ua Rau Tseem Ceeb ntawm LED Teeb Ci Nrov
2.1 Qhov Tsis Ruaj Ntseg Ntawm Tam Sim No: Qhov Ua Rau Muaj Teeb Ci
Qhov ci ntsa iab ntawm LED raug tswj tag nrho los ntawm lub zog tsav tsheb tam sim no. Yog tias muaj kev hloov pauv ntawm qhov tam sim no, qhov tso zis ntawm lub teeb yuav hloov pauv tas li. Feem ntau cov teeb LED yuav tsum hloov 220V AC lub zog tseem ceeb mus rau 12V / 24V DC fais fab mov. Yog tias qhov kev tsim ntawm qhov kev kho, kev lim dej, thiab kev tswj hwm tam sim no tsis zoo tag nrho, nws yuav ua rau muaj kev hloov pauv tam sim no, thiab tom qab ntawd ua rau muaj kev ntsais muag.

2.2 Ob Hom Kev Teeb Ci Nrov thiab Lawv Ua Rau
Qhov flicker qis zaus (100Hz - 120Hz): Qhov no feem ntau yog los ntawm kev lim tsis txaus ntawm qhov voltage ripple tom qab kev kho, nrog rau cov khoom seem AC ua rau muaj kev hloov pauv tam sim no. Nws feem ntau pom hauv cov khoom siv fais fab pheej yig uas tsis muaj electrolytic capacitors lossis nrog lub peev xwm tsis txaus. Kev raug rau lub sijhawm ntev rau cov khoom siv fais fab no tuaj yeem ua rau qaug zog.
Kev ntsais muag zaus siab (> 1kHz): Qhov no feem ntau tshwm sim hauv PWM dimming scenarios. Txawm tias cov teeb liab PWM zaus qis (<200Hz) uas tsis pom tseeb rau lub qhov muag tuaj yeem qhia txog teeb meem thaum lub sijhawm tua duab. Qee yam khoom kuj tseem yuav tsim cov resonance vim yog kev cuam tshuam harmonic, ua rau muaj qhov tshwm sim flicker ntxiv.

2.3 Cov Yam Ntxim Saib Ntxiv
Sib nrug ntawm cov teeb meem tsav tsheb tseem ceeb, qhov ntev ntawm cov xov hlau, kev sib raug zoo ntawm lub kaw lus dimming, thiab kev cuam tshuam electromagnetic (EMC) kuj tseem tuaj yeem ua rau muaj kev ntsais muag. Piv txwv li, yog tias 12V lub teeb strips tshaj 5 meters yam tsis muaj kev them nyiaj voltage, lub zog tsav tsheb tas mus li yuav tsis ruaj khov vim yog qhov poob voltage; cov tswj tsis ntse tsis muaj cov haujlwm dimming siab, uas yuav ua rau muaj kev tsis sib haum xeeb nrog cov teeb strips.

III. Kev Txhim Kho Txog Kev Siv Tshuab: Peb Txoj Kev Daws Teeb Meem Tseem Ceeb rauTsis-Flickering Drive
3.1 Lub Ntsiab Cai Tseem Ceeb: Lub ntsiab lus ntawm tsis muaj flicker yog "tam sim no ruaj khov + waveform huv si"
Kev ua haujlwm tsis muaj flicker tiag tiag tsis yog tsuas yog ua kom lub zog flashing ntau ntxiv xwb. Hloov chaw, nws ua tiav qhov no los ntawm kev kho vajtse kom zoo thiab kev tswj hwm algorithm, ua kom muaj qhov tso zis ruaj khov ntawm cov hluav taws xob tsav tsheb, yog li tswj tau cov hluav taws xob du yam tsis muaj kev hloov pauv loj. Tib lub sijhawm, nws xav txog kev ua haujlwm dimming lub teeb, kev siv hluav taws xob zoo, thiab cov qauv sib xws electromagnetic. Qhov no xav tau kev sib koom tes hauv ntau yam kev siv tshuab.

3.2 Kev Txhim Kho Kho Vaj Tse: Tiv Thaiv Kev Ntxeev Ntawm Qhov Chaw
3.2.1 Kev Xaiv Cov Chips Tsav Tsheb Uas Muaj Qhov Tseeb Siab
Los ntawm kev siv cov chips tswj kev ua haujlwm siab xws li TI TPS92662, ua ke nrog Buck/Flyback step-up/down topology qauv, kev tswj tam sim no ripple tsawg dua 1%. Qhov piv txwv ripple suppression tshaj 60dB, ua kom ntseeg tau tias cov zis tam sim no ruaj khov thiab tsis muaj kev cuam tshuam. Tib lub sijhawm, lub voj voog tswj kev tawm tswv yim tau koom ua ke los saib xyuas cov kev hloov pauv tam sim no hauv lub sijhawm tiag tiag thiab them rov qab rau qhov hloov pauv voltage thiab kev hloov pauv ntawm cov khoom thauj.

3.2.2 Kev Tsim Khoom Siv Lim Thiab Khaws Hluav Taws Xob Zoo Dua
Ntawm qhov kawg ntawm lub zog nkag, lub capacitor electrolytic siab voltage tau teeb tsa. Ntawm qhov kawg ntawm qhov tso zis, lub capacitor lim siab zaus txuas nrog parallel. Lub network lim ob chav ua kom lub zog hluav taws xob du thiab zam cov seem ntawm AC Cheebtsam. Hais txog qhov teeb meem ntawm lub neej ntawm capacitor, cov capacitors electrolytic ntev tau xaiv, thiab qhov kev teeb tsa ntawm lub voj voog tau ua kom zoo dua los sib npaug lub peev xwm ntawm capacitor thiab qhov ntim khoom. Qhov no ua kom ntseeg tau tias cov nyhuv lim dej thaum txuas ntxiv lub neej tag nrho.

3.2.3 Lub Teeb Ci Tshiab thiab Kev Tsim Kho Circuit
Los ntawm kev siv cov qauv teeb pom kev sib xyaw ua ke ntawm "thawj zaug sib luag ces ua ke", qhov teeb meem ntawm kev thauj khoom tsis sib xws los ntawm qhov yuam kev ntawm lub zog hluav taws xob pem hauv ntej (VF) ntawm cov hlaws teeb LED tau daws teeb meem. Qhov no zam kev hloov pauv ntawm qhov kaj hauv zos. Hauv lub voj voog, cov diodes rov qab sai thiab cov varistors tau txuas ua ke los tswj cov hluav taws xob nce siab thiab kev cuam tshuam hluav taws xob, txhim kho kev ruaj khov tam sim no thiab ua tau raws li cov qauv EMC.

3.3 Kev txhim kho thev naus laus zis dimming: Kev sib npaug ntawm kev tsis muaj flicker thiab dimming
3.3.1 Txoj Kev Sib Xyaws ntawm High-Frequency PWM thiab Linear Dimming
Nws siv lub tshuab PWM dimming uas muaj zaus ntau dua 3kHz, uas sib xws nrog DMX512 protocol. Txawm tias nyob rau hauv qhov xwm txheej ci ntsa iab qis dua 30%, tsis muaj kev ntsais muag. Tib lub sijhawm, nws koom ua ke linear dimming (Analog Dimming). Los ntawm kev kho qhov tam sim no tas mus li, qhov ci tuaj yeem hloov pauv, zam kev phom sij ntawm qhov hloov waveform hauv PWM dimming ib txwm muaj, thiab ua tiav kev hloov pauv tsis muaj kev ntsais muag thoob plaws tag nrho qhov ci ntsa iab.

3.3.2 Kev Txhim Kho ntawm Kev Sib Txuas Lus ntawm Smart Dimming
Nws sib xws nrog cov txheej txheem dimming digital xws li DALI thiab 0-10V. Nws muaj lub algorithm paub txog kev txawj ntse sab hauv uas tuaj yeem kho cov kev teeb tsa dimming raws li cov maub los sib txawv kom tsis txhob muaj kev tsis sib haum xeeb. Nws cais cov RGBW ywj pheej kom txo cov teeb liab PWM cuam tshuam thiab tshem tawm qhov teeb meem harmonic resonance thaum ntau xim ntawm lub teeb raug superimposed.

3.4 Kev Tiv Thaiv Qib System: Kev Ruaj Ntseg Tag Nrho Hauv Txhua Qhov Xwm Txheej
3.4.1 Kev Them Nyiaj Rau Qhov Hluav Taws Xob thiab Kev Txhim Kho Lub Hwj Chim Ntev
Rau cov xwm txheej siv cov xov hlau ntev, ib qho kev daws teeb meem fais fab txheem tau tsim: rau 12V lub teeb strips, ib qho chaw txhaj tshuaj fais fab tau teeb tsa txhua 5 meters; rau 24V lub teeb strips, kev muab hluav taws xob ntxiv tau muab txhua 10 meters los them rau qhov poob hluav taws xob thiab xyuas kom meej tias tam sim no sib xws thoob plaws hauv tag nrho lub teeb strips. Lub module tswj tau nruab nrog cov resistors thiab capacitors hloov kho tau, uas tuaj yeem ua kom zoo dua qhov fais fab raws li cov xwm txheej thauj khoom thiab ua tiav cov zis ruaj khov nrog PF > 0.7.

3.4.2 Kev Tsim Qauv Sib Piv Hluav Taws Xob (EMC)
Los ntawm kev ua kom zoo dua qhov kev teeb tsa ntawm lub voj voog thiab teeb tsa cov lim dej sib npaug / hom sib txawv, cov nyhuv lim dej tau txhim kho thaum tsis txhob muaj kev qhia txog cov ripples ntxiv vim yog kev cuam tshuam electromagnetic. Qhov no ua tiav ob lub hom phiaj ntawm kev tshem tawm flicker thiab ua tau raws li cov qauv EMC, daws qhov teeb meem kev sib tw ntawm "kev tsis sib npaug ntawm kev lim dej thiab kev teb rov qab" hauv kev lag luam.

IV. Kev Tshawb Pom thiab Kev Txheeb Xyuas: Cov Pov Thawj Tsis Txawj Ntshai ntawm Qhov Zoo Tsis Zoo Nkauj
4.1 Cov Qauv Kev Ntsuas thiab Cov Cim Qhia Txog Kev Ua Haujlwm
Ua raws li tus qauv IEEE Std 1789-2015 kom ntseeg tau tias feem pua ​​​​​​ntawm qhov flicker tsawg dua 5% thiab qhov ntsuas flicker tsawg dua 0.05, uas zoo dua li qhov kev nyab xeeb ntawm kev lag luam. Txhua pawg khoom tau dhau daim ntawv pov thawj TÜV tsis-flicker thiab daim ntawv pov thawj IEC / TR 61547-1 electromagnetic compatibility, tswj qhov zoo los ntawm qhov chaw.

4.2 Txheej Txheem Tshuaj Xyuas Peb Zaug
Theem R&D: Siv lub oscilloscope los sim cov waveform tam sim no, txheeb xyuas cov teeb meem zais xws li 100Hz ripple, thiab xyuas kom meej tias cov waveform tam sim no ruaj khov; Theem ntau lawm: Siv lub teeb strobe los ntes qhov feem pua ​​​​​​ntawm strobing thiab qhov ntsuas flicker, thiab tsis lees txais cov khoom tsis ua raws li ncaj qha; Theem Hoobkas: Qauv rau kev sim tua smartphone kom ntseeg tau tias tsis muaj cov kab txaij tua, cov kab tsaus nti, thiab lwm yam.

4.3 Cov neeg siv tuaj yeem txheeb xyuas txoj kev ntawm lawv tus kheej
Txoj kev siv lub koob yees duab ntawm lub xov tooj ntawm tes: Qhib hom video qeeb ntawm lub xov tooj ntawm tes thiab tsom mus rau ntawm lub teeb ci. Yog tias tsis muaj cov kab dub thiab dawb pom tseeb, nws ua pov thawj tias tsis muaj qhov ci ntsa iab pom tseeb. Txoj kev siv sijhawm ntev: Siv tas li ntau dua 3 teev yam tsis muaj qhov muag nkees lossis mob taub hau, uas ua tau raws li qhov yuav tsum tau ua ntawm lub teeb pom kev zoo.

V. Cov Khoom Zoo: Tus Nqi ntawm Kev Siv Tshuab Tsis Muaj Flash
5.1 Kev Tiv Thaiv Kev Noj Qab Haus Huv: Haum Rau Txhua Tus Neeg
Tsis muaj teeb ci ntsa iab, nws zam kev qaug zog ntawm lub qhov muag thiab mob taub hau, thiab lwm yam, thiab tsim nyog rau cov xwm txheej xws li menyuam yaus kawm ntawv thiab teeb pom kev zoo hauv chaw ua haujlwm, nrog rau cov neeg laus nyob. Tib lub sijhawm, nws tshem tawm qhov kev pheej hmoo ntawm kev ua rau muaj tus kab mob qaug dab peg, muab ib puag ncig teeb pom kev zoo nyab xeeb rau cov pab pawg neeg rhiab heev.

5.2 Kev Hloov Kho Kom Zoo Rau Kev Ua Haujlwm: Ua Tau Raws Li Qhov Yuav Tsum Tau Ua Thaum Thaij Duab Thiab Cov Xwm Txheej Tshwj Xeeb
Tsis muaj qhov flicker zais ntau zaus. Hauv cov xwm txheej xws li kev thaij duab, kev tshaj tawm nyob, thiab kev teeb pom kev zoo, nws tuaj yeem tiv thaiv lub lens los ntawm kev ntes cov kab txaij lossis cov kab tsaus nti, ua kom cov duab zoo ruaj khov; tag nrho cov teeb pom kev zoo tsis muaj flicker, thiab nws tsim nyog rau ntau yam kev xav tau xws li ambient dimming thiab hmo ntuj teeb pom kev zoo.

5.3 Kev Ruaj Ntseg Mus Ntev: Ntev Lub Neej Khoom Siv
Qhov hluav taws xob ruaj khov txo qhov siv hluav taws xob ntawm cov hlaws teeb LED. Ua ke nrog cov chips tsav tsheb thiab capacitors uas siv tau ntev, lub neej ua haujlwm ntawm cov khoom tau nce ntau dua 30% piv rau cov teeb pom kev zoo ib txwm muaj. Kev them nyiaj hluav taws xob thiab kev tsim qauv tiv thaiv kev cuam tshuam ua rau nws sib xws nrog cov cable teeb tsa 5-20-meter ntev, ua tau raws li qhov xav tau ntawm kev kho kom zoo nkauj hauv qhov chaw loj.

Qhov tsis muaj qhov ntsais ntawm cov teeb LED tsis yog tsuas yog teeb meem ntawm kev sib dhos khoom siv xwb; nws yog qhov tshwm sim ntawm kev ua tiav ntawm kev siv tshuab uas muaj kev siv hluav taws xob, kev lim dej hauv network, kev tswj qhov tsaus ntuj, thiab kev sib raug zoo ntawm hluav taws xob. Peb yeej ib txwm tsis kam txo qhov nqi thiab muab rau cov neeg siv "tsis pom kev ntawm lub qhov muag liab qab, ua tau raws li cov qauv rau kev ntes, thiab hloov kho tau rau ntau qhov xwm txheej" LED teeb tsis muaj qhov ntsais, kom ntseeg tau tias txhua lub teeb ci zoo nkauj thiab noj qab haus huv.
Yog tias koj ntsib teeb meem flicker thaum lub sijhawm kho kom zoo nkauj hauv tsev lossis teeb pom kev lag luam, thov koj xav tiv tauj peb.sab lajpeb pab neeg kev tshaj lij kom tau txais cov kev daws teeb meem teeb pom kev zoo uas tsis muaj teeb meem.

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