Dimming inzira yekusiyanisa chiedza chinobuda chechiedza. Izvi zvinoitirwa kuseta ambience kana kuchengetedza simba kana kuzara kwechiedza kusinganyatso kudiwa. Zvizhinji zvema dimming masisitimu akashandiswa pamberi pema LED kana kunyange nhasi akagadzirirwa incandescent mwenje bulbs. Aya masisitimu anowanzo shandisa nzira dzekumberi-chikamu uye reverse-phase dimming umo dimmer inovhiringa kana kutema AC line yekupinda kuderedza simba rinopinda mumutyairi. Nesimba shoma rekupinza, pachave nekubuda kushoma pamutyairi, uye kupenya kwechiedza kunoderera.

Mazwi anonyanya kunzwika kudzima makiyi mu LED mwenje mwenje ndeye DMX, DALI, 0/1-10V, thyristor (TRIAC), WIFI, Bluetooth, RF, uye Zigbee. Aya ndiwo masaini ekuisa eiyo dimming magetsi ekupa. Kusarudzwa kweakasiyana masaini masaini anonyanya kukonzerwa nekufunga kwezvakatipoteredza (kuisa, wiring), basa, mutengo, uye kuchinjika kwekuwedzera kwekupedzisira. Hunhu hwekuita dimming hunonyanya kutsanangurwa neinobuda dimming nzira yemagetsi dimming, kwete nzira yekuisa dimming.

Iyo inobuda dimming nzira dzekudzima magetsi emagetsi anonyanya kukamurwa kuita marudzi maviri, Constant Current Reduction (CCR) uye Pulse Width Modulation (PWM) (inozivikanwawo seAnalog Dimming).

Chekutanga, kujekeswa: chaizvo, ese ma LED mitsetse inodzima.

Paunotengera mwenje wemba ye LED senge A-maitiro mababu, unogona kazhinji kuona NOT DIMMABLE yakanyorwa pasi petsananguro yechigadzirwa. Mamwe ma bulbs e LED haadzimike nekuti magetsi emagetsi ari mukati me LED girobhu haana kugadzirwa kuti adudzire dimming siginecha yewall dimmer, iyo, zvakare, iri/yakagadzirirwa girobhu incandescent.

Kune rimwe divi, mitsetse ye LED haina kugadzirwa kuti ibatanidzwe zvakananga kune yakakwira voltage (semu 120V AC socket yemadziro), uye inoda magetsi ekushandura iyo yakakwira voltage AC kuita yakaderera 12V kana 24V DC voltage.

Naizvozvo, kana dimmer yemudhuri ichibatanidzwa, inofanira kutanga "kutaura" kune magetsi kusati kwaitika chero dimming inogona kuitika pa LED strip. Naizvozvo, iyo inodzima / isingadzimike mubvunzo inoenderana neiyo magetsi ekupa, uye kana ichigona kududzira iyo dimming chiratidzo chinogadzirwa nemadziro-dimmer.

Kune rimwe divi, angangoita ese ma LED mitsetse (sezviri, iyo strip pachayo) inodzima. Tichipihwa yakakodzera DC yemagetsi siginecha (kazhinji PWM), chero kupenya kwe LED strip kunogona kugadziridzwa zvakasununguka.

Ndokumbira utarise kuti pane kazhinji mhando mbiri dzematanho akatungamira pamusika, nguva dzose ikozvino uye nguva dzose voltage. Zvavanoda kuti dimming power supply zvakasiyana. Ndokumbira utarise tafura iri pazasi:

Chii chinodzora kupenya kwe LED?

Huwandu hwezvino inoyerera kuburikidza ne LED inosarudza kubuda kwayo kwechiedza. Kana tikatarisa girafu riri pamusoro, tinoona kuti kuchinja magetsi kunoshandurawo ikozvino kuburikidza ne LED, zvichiita kuti tifunge nezvekudzima LED nekuwedzera kana kuderedza magetsi pairi. Nekudaro, isu tinogona zvakare kuona kuti dunhu ratinogona kushandura voltage pasina kuwana yakawandisa ikozvino idiki. Zvakare, yazvino haifungidzike zvakare, sekupenya kwayo.

Kana tikaongorora mamwe madhairekitori e LED, tinogona kuona kuti kupenya kwe LED kunoenderana nekumberi ikozvino. Hukama hwavo hunenge hwemutsara futi. Saka mukudzima ma LED, isu tinotora iyo yekumberi voltage seyakagadziriswa kukosha uye tinodzora ikozvino panzvimbo.

LED Dimming Nzira

Midziyo yese yeLED inoda kuti mutyairi adzime, uye kune nzira mbiri dzakajairwa dzinoshandiswa nevatyairi kudzima ma LED: Pulse Width Modulation uye Constant Current Reduction (inozivikanwawo seAnalog Dimming).

Pulse Width Kusiyanisa (PWM)

MuPWM, iyo LED inobatidzwa uye KUDZIMWA pane yayo yakayerwa ikozvino pane yakakwirira frequency. Iko kukurumidza kuchinja kwakakwirira zvakakwana kuti ziso remunhu rione. Chii chinotarisa kupenya kweyero ye LED kutenderera kwebasa kana chiyero chenguva iyo LED iri ON uye nguva yakazara yekutenderera kumwe kwakazara.

Advantages:

• Inopa yakanyatso kuburitsa level
• Inokodzera maapplication anoda kuchengetedza mamwe maitiro e LED senge ruvara, tembiricha, kana kugona
• Broad dimming range - inogona kuderedza chiedza chinobuda kune zvakakosha zvisingasviki 1 muzana
• Inodzivirira kushanduka kwemavara nekushandisa iyo LED pane yakakurudzirwa kumberi voltage / kumberi ikozvino inoshanda nzvimbo

payakaipira:

• Vatyairi vakaoma uye vanodhura
• Sezvo PWM ichishandisa kukurumidza kushandura, iyo inokurumidza-kusimuka mupendero uye inodonha mupendero weimwe neimwe switching kutenderera inoburitsa isingadiwe EMI radiations.
• Mutyairi anogona kunge aine nyaya dzekuita kana achimhanya newaya refu sezvo hunhu hwakarasika hwewaya (capacitance uye inductance) hunogona kukanganisa magumo ePWM.

Duty Cycle

Izwi rekuti duty cycle rinotsanangura chikamu che 'pa' nguva kune nguva yakajairika kana 'nguva' yenguva; a low duty cycle inoenderana nesimba rakaderera, nekuti simba rinodzima nguva zhinji. Duty cycle inoratidzwa mu muzana, 100% iri zvizere. Kana chiratidzo chedhijitari chiri pahafu yenguva uye kubva kune imwe hafu yenguva, chiratidzo chedhijitari chine duty cycle ye50% uye yakafanana ne "square" wave. Kana chiratidzo chedhijitari chikapedza nguva yakawanda chiri muhurumende pane iyo off state, ine basa rekutenderera>50%. Kana chiratidzo chedhijitari ichipedza nguva yakawanda chiri kunze kwenyika kupfuura iyo iri mudunhu, ine basa kutenderera kwe <50%. Heino mufananidzo unoratidza aya matatu mamiriro:

maitikiro

Chimwe chinhu chakakosha cheiyo pulse wide modulation (PWM) chiratidzo ndeye frequency yayo. Iyo PWM frequency inotaridza kukurumidza kwechiratidzo chePWM kupedzisa nguva, iyo nguva ndiyo nguva inotorwa kuti chiratidzo chiende nekudzima.

Kuyananisa kutenderera kwebasa uye kuwanda kweiyo PWM siginecha kunogadzira mukana wekudzima mutyairi we LED.

Constant Current Reduction (CCR)

MuCCR, ikozvino inoyerera ichienderera kuburikidza ne LED. Saka iyo LED inogara iri ON, kwete senge muPWM uko iyo LED inogara yakabatidzwa uye KUDZIMWA. Kupenya kwe LED kunobva kwasiyana nekuchinja nhanho iripo.

Advantages:

• Inogona kushandiswa nemaapplication ane zvakaomesesa EMI zvinodiwa uye kure maapplication uko kureba waya inomhanya inoshandiswa
• Vatyairi veCCR vane yakakwira yakakwira voltage inogumira (60 V) pane vatyairi vanoshandisa PWM (24.8 V) kana vakaiswa seUL Class 2 vatyairi kunzvimbo dzakaoma uye dzakanyorova.

payakaipira:

• CCR haikodzere maapplication ayo anodimming mwenje pazasi pegumi muzana inodiwa nekuti pamhepo yakadzikira, maLED haaite zvakanaka uye kubuda kwechiedza kunogona kukanganisa.
• Low drive currents inogona kukonzera kusaenderana kwemavara

DMX512 Dimming

DMX512 chiyero chedhijitari network network iyo inowanzoshandiswa kudzora mwenje nemhedzisiro. Yakanga yakarongedzerwa senzira yakamisikidzwa yekudzora dariro yekuvhenekesa dimmers, iyo, pamberi peDMX512, yakanga yashandisa akasiyana-siyana asingaenderane proprietary protocol. Yakakurumidza kuve nzira yekutanga yekubatanidza ma controller (senge mwenje mwenje) kune dimmers uye yakakosha mhedzisiro zvishandiso senge michina yemhute uye akangwara magetsi.

DMX512 yakawedzerawo kushandisa mune zvisiri zvetheatre mukati uye mwenje wekuvaka, pazvikero kubva kune tambo dzeKisimusi mwenje kune emagetsi mabhodhi uye nhandare kana nhandare. Iko zvino inogona kushandiswa kudzora chero chinhu, ichiratidza mukurumbira wayo mumhando dzese dzenzvimbo.

DALI Dimming

Iyo Digitally Addressable Lighting Interface (DALI) yakatanga kuEurope uye yave ichishandiswa zvakanyanya kwemakore mazhinji munzvimbo iyoyo yepasi. Iye zvino iri kuwedzera mukurumbira muUnited States zvakare. Iyo DALI chiyero inobvumira kudzora kwedhijitari yezvigadziriso zvemunhu kuburikidza neyakaderera voltage yekutaurirana protocol iyo inogona kutumira ruzivo kune mwenje zvigadziriso uku ichigamuchirawo data kubva kune zvigadziriso, zvichiita ichi chishandiso chakakosha chekuvaka masisitimu ekutarisa ruzivo uye kutonga kubatanidzwa. DALI inobvumira kugadzirisa zvigadziriso zvega, nemakero anosvika makumi matanhatu nemana anogona kurongwa munzvimbo gumi nematanhatu dzakasiyana. DALI kutaurirana haisi polarity inonzwa, uye akasiyana siyana ekubatanidza anogoneka neiyi protocol. Yakajairika DALI wiring dhizaini inoratidzwa pazasi:

0/1-10V Dimming

Yekutanga uye yakapusa yemagetsi mwenje yekudzora siginecha system, yakaderera voltage 0-10V dimmers, shandisa yakaderera voltage 0-10V DC chiratidzo chakabatana kune yega yega LED magetsi kana Fluorescent ballast. Pa0 Volts, mudziyo uchadzima kusvika padiki mwenje mwero unobvumidzwa nemutyairi we dimming, uye pa10 Volts mudziyo uchange uchishanda pa100%. Iyo yakajairika 0-10V wiring dhizaini inoratidzwa pazasi:

TRIAC Dimming

TRIAC inomirira Triode yeAlternating Current, uye iswitch inoshandiswa kudzora simba. Kana ichishandiswa mukuvhenekesa zvikumbiro, inowanzonzi 'TRIAC dimming'.

TRIAC maseketi anoshandiswa zvakanyanya uye akajairika muAC simba rekutonga maapplication. Aya maseketi anogona kushandura mavheti akakwira uye akanyanya mazinga ezvino muzvikamu zviviri zve AC waveform. Iwo ma semiconductor zvishandiso, zvakafanana ne diode.
TRIAC inowanzo shandiswa senzira yekudzima mwenje mumashandisi emwenje epamba uye inogona kutoshanda sesimba rekutonga mumamotor.

Kugona kweTRIAC kushandura ma voltages akakwira kunoita kuti ive yakakodzera kushandiswa mumhando dzakasiyana dzemagetsi ekudzora maapplication. Izvi zvinoreva kuti inogona kushanda kuti ienderane nemazuva ese ekuvhenekesa-kutonga zvinodiwa. TRIAC maseketi anoshandiswa kune zvinopfuura kungoita mwenje wepamba, zvakadaro. Iwo zvakare anoshandiswa pakudzora mafeni uye madiki mota uye mune mamwe AC switching uye kutonga maapplication.
Kana iwe uchitsvaga kudzora kwemaitiro akawanda, tine chokwadi chekuti uchawana TRIAC inobatsira protocol.

TRIAC iri high voltage (~ 230v) inodzima. Wiring a TRIAC module kune yako mains inopa (pakati pe100-240v AC), iwe unozokwanisa kuwana dimming maitiro aunoda.

RF Dimming

Radio frequency (RF) dimming shandisa redhiyo frequency siginecha kutaurirana neiyo LED controller kudzima ruvara rwemwenje yako yeLED.

Bluetooth, WIFI, Zigbee Dimming

MAKARALI USB ipfupi-renji isina waya tekinoroji chiyero chinoshandiswa kuchinjana data pakati pezvakagadziriswa uye nharembozha pamusoro pemafashama mapfupi uchishandisa mafungu eredhiyo eUHF mumabhendi eISM, kubva pa2.402 GHz kusvika 2.48 GHz, uye kuvaka nharaunda dzemunhu (PANs). Inonyanya kushandiswa seimwe nzira yekubatanidza waya, kuchinjana mafaira pakati pemidziyo inotakurika iri pedyo uye kubatanidza nharembozha uye mimhanzi inoridza newireless mahedhifoni. Mune iyo inonyanya kushandiswa modhi, simba rekutapurirana rinogumira kune 2.5 milliwatts, ichipa iyo pfupi pfupi kwazvo inosvika gumi metres (10 ft).

Wi-Fi kana WiFi (/ ˈwaɪfaɪ/), imhuri yewireless network protocol, yakavakirwa paIEEE 802.11 mhuri yezviyero, iyo inowanzoshandiswa kune yenzvimbo network network yemidziyo uye kuwana Internet, zvichibvumira midziyo yedhijitari iri pedyo kuchinjanisa data nemasaisai eredhiyo. Aya ndiwo anonyanya kushandiswa makomputa network pasi rose, anoshandiswa pasi rose mudzimba uye madiki hofisi network kubatanidza desktop nelaptop makomputa, matablet makomputa, smartphones, smart TV, maprinta, uye vatauri vakangwara pamwe chete uye kune isina waya router kuti zvibatanidze kune. Indaneti, uye munzvimbo dzisina waya dzekupinda munzvimbo dzeveruzhinji sezvitoro zvekofi, mahotera, maraibhurari nenhandare dzendege kupa veruzhinji mukana weInternet wemidziyo inotakurika.

Zigbee iIEEE 802.15.4-yakavakirwa chirevo chechikamu chepamusoro-danho rekurukurirano maprotocol anoshandiswa kugadzira network yenzvimbo yemunhu ane maredhiyo madiki, asina simba redhijitari, akadai seayo otomatiki epamba, kuunganidzwa kwedata remudziyo, uye mamwe mashoma-simba rakaderera. -bandwidth inoda, yakagadzirirwa madiki mapurojekiti anoda wireless connection. Nekudaro, Zigbee isimba rakaderera, rakaderera data data, uye padyo nepedyo (kureva, nzvimbo yega) isina waya ad hoc network.

Kugumisa Kwekupedzisira

Yese mitsetse ye LED inodzima. Asi ndapota cherechedza kuti kune marudzi maviri e-led strip, anogara ari voltage led strip, uye nguva dzose inotungamira tambo. Inogara iripo inotungamira tambo inofanirwa kushandiswa nePWM inobuda chiratidzo chinodzikira led strip! Kune anogara ari voltage LED mitsetse, unogona kusarudza PWM kana CCR inobuda chiratidzo dimming magetsi zvinoenderana nezvinodiwa zveprojekiti. Uye kune akawanda masaini masaini, akadai seDMX512, DALI, 0/1-10V, TRIAC, WIFI, Bluetooth, RF, uye Zigbee.
Iwe unogona kusarudza iyo yakakodzera yekuisa chiratidzo uchifunga nharaunda (kuisirwa, wiring), basa, mutengo, uye kuchinjika kwekuwedzera kwekupedzisira.

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