Zvinoenderana nemishumo yenhau, Dhipatimendi reMagetsi reUS (DOE) nguva pfupi yadarika yakaburitsa chirevo chayo chechitatu chekuvimbika pamadhiraivha e LED zvichibva pakuyedzwa kwehupenyu kwenguva refu. Vatsvagiri vekuUS Department of Energy's Solid State Lighting (SSL) vanotenda kuti zvichangobva kubuda zvinosimbisa kuti nzira yeAccelerated Stress Testing (AST) yakaratidza kuita kwakanaka pasi pemamiriro ezvinhu akaomarara. Pamusoro pezvo, mhedzisiro yebvunzo uye kuyerwa kukundikana zvinhu zvinogona kuzivisa vatyairi vanogadzira nzira dzakakodzera dzekuwedzera kuvimbika.
Sezvinozivikanwa, madhiraivha e LED, senge ma LED ezvikamu ivo pachavo, akakosha kune yakakwana mhando yechiedza. A akakodzera mutyairi dhizaini anogona kubvisa flickering uye kupa yunifomu chiedza. Uye mutyairi ndiye zvakare angangoita chikamu mumwenje we LED kana zvigadziriso zvemwenje kusashanda. Mushure mekuona kukosha kwevatyairi, DOE yakatanga chirongwa chekuongorora mutyairi kwenguva refu muna 2017. Iyi purogiramu inosanganisira imwe nzira uye madhiraivha akawanda, ayo anogona kushandiswa kugadzirisa zvigadzirwa zvakadai seceiling grooves.
Dhipatimendi reMagetsi reUS rakamboburitsa mishumo miviri pamusoro pekuyedzwa uye kufambira mberi, uye ikozvino yechitatu bvunzo data mushumo iri kuburitswa, iyo inovhara chigadzirwa bvunzo mhinduro inoshanda pasi peAST mamiriro e6000-7500 maawa.
Muchokwadi, iyo indasitiri haina nguva yakawanda yekuyedza madhiraivha munzvimbo dzakajairika dzekushanda kwemakore mazhinji. Kusiyana neizvi, Dhipatimendi reMagetsi reUnited States pamwe nekambani yeRTI International vakaedza motokari mune yavanoti nzvimbo ye7575 - ine humidity yemukati uye tembiricha yakachengetedzwa nguva dzose pa75 ° C. Muedzo uyu unosanganisira matanho maviri ekuedzwa kwemutyairi, pasina channel. Single stage design inodhura zvishoma, asi inoshaya dunhu rakaparadzana rinotanga kushandura AC kuenda kuDC yobva yadzora yazvino, iyo yakasarudzika kune maviri-matanho dhizaini.

Dhipatimendi reUS reMagetsi shumo rinoti mubvunzo dzakaitwa pamadhiraivha gumi nerimwe akasiyana, madhiraivha ese akaitwa kwemaawa zana munzvimbo ye7575. Kana dhiraivha iri mukamuri yezvakatipoteredza, iyo LED mutoro wakabatana nedhiraivha iri pasi pekunze kwemamiriro ekunze, saka iyo AST nharaunda inongobata drive. DOE haina kubatanidza iyo nguva yekumhanya pasi peAST mamiriro kune iyo yekumhanya pasi peyakajairika mamiriro. Batch rekutanga remidziyo rakatadza mushure mekushanda kwemaawa 1250, kunyangwe mamwe maturusi achiri kushanda. Mushure mekuedza kwemaawa 4800, 64% yemidziyo yakundikana. Zvakadaro, tichifunga nezve hutsinye hwekuyedza nharaunda, idzi mhedzisiro dzatove dzakanaka.
Vatsvagiri vakaona kuti kukanganisa kwakawanda kunoitika padanho rekutanga remutyairi, kunyanya musimba rekugadzirisa zvinhu (PFC) uye electromagnetic interference (EMI) kudzvinyirira maseketi. Mumatanho ese ari maviri emutyairi, maMOSFET anewo zvikanganiso. Pamusoro pekuratidza nzvimbo dzakaita sePFC neMOSFET dzinogona kuvandudza dhizaini yevatyairi, iyi AST inoratidzawo kuti kukanganisa kunowanzo fungirwa zvichienderana nekutarisa kuita kwemutyairi. Semuyenzaniso, yekutarisa simba chinhu uye surge ikozvino inogona kuona zvikanganiso zvekutanga pamberi. Kuwedzera kwekupenya kunoratidzawo kuti kusashanda kuri pedyo.
Kwenguva yakareba, chirongwa cheDOE's SSL chave kuita bvunzo dzakakosha uye tsvakiridzo mundima yeSSL, kusanganisira application mamiriro echigadzirwa bvunzo pasi peGateway purojekiti uye kutengeserana kwechigadzirwa bvunzo yekushanda pasi peCaliper chirongwa.