Umthombo weNqaku: Ijenali yoPhando lweeMishini zezoLimo;

Umbhali: Yingying Shan, Xinmin Shan, Song Gu.

I-Watermelon, njengesityalo esiqhelekileyo sezoqoqosho, inemfuno enkulu yemarike kunye neemfuno zomgangatho ophezulu, kodwa ukulima kwayo izithole kunzima kwi-melon kunye ne-eggplant. Isizathu esiphambili kukuba: i-watermelon sisityalo esithanda ukukhanya. Ukuba akukho kukhanya kwaneleyo emva kokuba isityalo se-watermelon siphukile, siya kukhula kakhulu kwaye senze izithole ezinde, nto leyo echaphazela kakhulu umgangatho wezithole kunye nokukhula kamva. I-watermelon ukusuka ekutyalweni ukuya ekutyalweni kwenzeka phakathi kukaDisemba waloo nyaka kunye noFebruwari wonyaka olandelayo, elilixesha lonyaka elineqondo lobushushu eliphantsi, ukukhanya okubuthathaka kunye nesifo esibi kakhulu. Ingakumbi kumazantsi eTshayina, kuqhelekile ukuba kungabikho kukhanya kwelanga kangangeentsuku ezili-10 ukuya kwisiqingatha senyanga ekuqaleni kwentwasahlobo. Ukuba kukho imozulu engapheliyo enamafu nekhephu, iya kubangela nenani elikhulu lezithole ezifileyo, nto leyo eya kuzisa umonakalo omkhulu kwilahleko yezoqoqosho yabalimi.

Indlela yokusebenzisa umthombo wokukhanya okwenziweyo, umz. ukukhanya okuvela kwizibane ze-LED zokukhulisa izityalo, ukufaka "isichumisi esikhanyayo" kwizityalo kuquka nezithole zevatala phantsi kwemeko yokukhanya kwelanga okwaneleyo, ukuze kufezekiswe injongo yokwandisa isivuno, ukusebenza kakuhle, umgangatho ophezulu, ukumelana nezifo kunye nokungabi nangcoliseko ngelixa kukhuthazwa ukukhula nophuhliso lwezityalo, ibe yindlela ephambili yophando lwezazinzulu zemveliso yezolimo kangangeminyaka emininzi.

Kwiminyaka yakutshanje, uphando lufumanise ukuba umlinganiselo owahlukileyo wokukhanya okubomvu nokuluhlaza okwesibhakabhaka nawo unefuthe elikhulu ekukhuleni kwezithole zezityalo. Umzekelo, umphandi uTang Dawei nabanye bafumanise ukuba i-R / b = 7:3 yeyona milinganiselo ilungileyo yokukhanya okubomvu nokuluhlaza okwesibhakabhaka ekukhuleni kwezithole zekhukhamba; umphandi uGao Yi nabanye babonise kwiphepha labo ukuba i-R / b = 8:1 umthombo wokukhanya oxutyiweyo yeyona ndlela ifanelekileyo yokukhanyisa ekukhuleni kwezithole zeLuffa.

Ngaphambili, abanye abantu babezama ukusebenzisa imithombo yokukhanya eyenziweyo efana nezibane ze-fluorescent kunye nezibane ze-sodium ukwenza uvavanyo lokutyala izithole, kodwa isiphumo asizange sibe sihle. Ukususela ngeminyaka yoo-1990, bekukho uphando malunga nokulinywa kwezithole kusetyenziswa izibane ze-LED njengemithombo yokukhanya eyongezelelweyo.

Izibane ze-LED zokukhulisa zinezibonelelo zokonga amandla, ukhuseleko lokusingqongileyo, ukhuseleko kunye nokuthembeka, ubomi obude benkonzo, ubungakanani obuncinci, ubunzima obulula, ukuveliswa kobushushu obuphantsi kunye nokusasazwa kokukhanya okuhle okanye ulawulo oludibeneyo. Zingadityaniswa ngokweemfuno zokufumana ukukhanya okucocekileyo kwe-monochromatic kunye ne-composite spectrum, kwaye izinga lokusetyenziswa kwamandla okukhanya elifanelekileyo linokufikelela kwi-80% - 90%. Zithathwa njengomthombo wokukhanya ongcono kakhulu ekulimeni.

Okwangoku, kwenziwe uphando oluninzi malunga nokulinywa kwerayisi, ikhukhamba kunye nespinatshi ngomthombo wokukhanya we-LED ococekileyo eTshayina, kwaye kwenziwe inkqubela phambili ethile. Nangona kunjalo, kwizithole zevatala ezinzima ukuzikhulisa, ubuchwepheshe bangoku busahlala kwinqanaba lokukhanya kwendalo, kwaye ukukhanya kwe-LED kusetyenziswa kuphela njengomthombo wokukhanya owongezelelweyo.

I Ngenxa yeengxaki ezingasentla, eli phepha liza kuzama ukusebenzisa isibane se-LED njengomthombo wokukhanya ococekileyo ukuze kufundwe ukuba kunokwenzeka na ukuzala kwezithole ze-watermelon kunye nomlinganiselo ongcono wokukhanya okhanyayo ukuphucula umgangatho wezithole ze-watermelon ngaphandle kokuxhomekeka elangeni, ukuze kubonelelwe ngesiseko sethiyori kunye nenkxaso yedatha yolawulo lokukhanya kwezithole ze-watermelon kwizibonelelo.

A.Inkqubo yovavanyo kunye neziphumo

1. Izixhobo zovavanyo kunye nonyango olukhanyayo

I-WATTER ZAOJIA 8424 yasetyenziswa kolu vavanyo, kwaye indawo yokutyala imbewu yayiyiJinhai Jinjin 3. Indawo yovavanyo yakhethwa kwifektri yezibane zokukhulisa izityalo ze-LED eQuzhou City kwaye izixhobo zokukhanyisa izityalo ze-LED zasetyenziswa njengomthombo wokukhanya kovavanyo. Uvavanyo lwathatha imijikelo emi-5. Ixesha lovavanyo olunye yayiziintsuku ezingama-25 ukusuka ekuntywilisweni kwembewu, ukuhluma ukuya ekukhuleni kwezithole. Ixesha lokudubula laliziiyure ezisi-8. Ubushushu bangaphakathi babuyi-25 ° ukuya kwi-28 ° emini (7:00-17:00) kunye ne-15 ° ukuya kwi-18 ° ngokuhlwa (17:00-7:00). Umswakama ojikeleze umhlaba wawuyi-60% - 80%.

Ii-LED ezibomvu neziluhlaza okwesibhakabhaka zisetyenziswa kwizibane ze-LED, ezinobude obubomvu obuyi-660nm kunye nobude obuluhlaza obuyi-450nm. Kolu vavanyo, ukukhanya okubomvu nokuluhlaza okwesibhakabhaka okunomlinganiselo we-luminous flux ongu-5:1, 6:1 kunye no-7:13 kwasetyenziswa ukuthelekisa.

2. Isalathisi somlinganiselo kunye nendlela

Ekupheleni komjikelo ngamnye, izithole ezi-3 zikhethwe ngokungacwangciswanga ukuze kuvavanywe umgangatho wezithole. Izalathiso zaziquka ubunzima obomileyo nobutsha, ukuphakama kwesityalo, ububanzi besiqu, inani lamagqabi, indawo ethile yamagqabi kunye nobude beengcambu. Phakathi kwazo, ukuphakama kwesityalo, ububanzi besiqu kunye nobude beengcambu kunokulinganiswa nge-vernier caliper; inani lamagqabi kunye nenani leengcambu linokubalwa ngesandla; ubunzima obomileyo nobutsha kunye nendawo ethile yamagqabi inokubalwa ngerula.

3. Uhlalutyo lweenkcukacha-manani zedatha

4. Iziphumo

Iziphumo zovavanyo ziboniswe kwiTheyibhile 1 kunye namanani 1-5.

Kwitheyibhile 1 kunye nomfanekiso 1-5, kunokubonwa ukuba ngokwanda komlinganiselo wokukhanya ukuya kowokudlula, ubunzima obutsha obomileyo buyancipha, ukuphakama kwesityalo kuyanda (kukho isiganeko sobude obungenamsebenzi), isiqu sesityalo siya sincipha kwaye sincinci, indawo ethile yamagqabi iyancipha, kwaye ubude beengcambu bufutshane kwaye bufutshane.

B.Uhlalutyo lweziphumo kunye novavanyo

1. Xa umlinganiselo wokukhanya phakathi kokudlula kwembewu uyi-5:1, ukukhula kwezithole zevatala yeyona ilungileyo.

2. Isityalo esincinci esikhanyiswa kukukhanya kwe-LED okukhulayo okunomlinganiselo ophezulu wokukhanya okuluhlaza okwesibhakabhaka kubonisa ukuba ukukhanya okuluhlaza okwesibhakabhaka kunempembelelo ecacileyo yokuthintela ukukhula kwesityalo, ingakumbi kwisiqu sesityalo, kwaye akunampembelelo icacileyo ekukhuleni kwamagqabi; ukukhanya okubomvu kukhuthaza ukukhula kwesityalo, kwaye isityalo sikhula ngokukhawuleza xa umlinganiselo wokukhanya okubomvu mkhulu, kodwa ubude baso bucacile, njengoko kubonisiwe kuMfanekiso 2.

3. Isityalo sifuna umlinganiselo owahlukileyo wokukhanya okubomvu nokuluhlaza okwesibhakabhaka ngamaxesha ahlukeneyo okukhula. Umzekelo, izithole zevatala zifuna ukukhanya okuluhlaza okwesibhakabhaka ngakumbi kwinqanaba lokuqala, okunokuthintela ngempumelelo ukukhula kwezithole; kodwa kwinqanaba lokugqibela, zifuna ukukhanya okubomvu ngakumbi. Ukuba umlinganiselo wokukhanya okuluhlaza okwesibhakabhaka uhlala uphezulu, izithole ziya kuba ncinci kwaye zibe mfutshane.

4. Ukukhanya kwesithole sevatala ekuqaleni akufanele kube namandla kakhulu, nto leyo eya kuchaphazela ukukhula kwezithole kamva. Eyona ndlela ingcono kukusebenzisa ukukhanya okubuthathaka ekuqaleni uze usebenzise ukukhanya okunamandla kamva.

5. Ukukhanya okufanelekileyo kwezibane ze-LED kuya kuqinisekiswa. Kufunyaniswe ukuba ukuba ukukhanya kuphantsi kakhulu, ukukhula kwezithole kubuthathaka kwaye kulula ukuzikhulisa ngaphandle kwesizathu. Kufuneka kuqinisekiswe ukuba ukukhanya okuqhelekileyo kokukhula kwezithole akunakuba ngaphantsi kwe-120wml; nangona kunjalo, utshintsho kwindlela yokukhula kwezithole ezinokukhanya okuphezulu kakhulu alubonakali, kwaye ukusetyenziswa kwamandla kuyanda, nto leyo engayi kunceda ekusetyenzisweni kwefektri kwixesha elizayo.

CIziphumo

Iziphumo zibonise ukuba kunokwenzeka ukusebenzisa umthombo wokukhanya we-LED ococekileyo ukuhlwayela izithole ze-watermelon kwigumbi elimnyama, kwaye i-5:1 luminous flux yayinceda kakhulu ekukhuleni kwezithole ze-watermelon kunezihlandlo ezi-6 okanye ezi-7. Kukho amanqaku amathathu abalulekileyo ekusetyenzisweni kwetekhnoloji ye-LED ekulimeni izithole ze-watermelon kwimizi-mveliso.

1. Umlinganiselo wokukhanya okubomvu nokuluhlaza okwesibhakabhaka ubaluleke kakhulu. Ukukhula kwangethuba kwezithole zevatala akunakukhanyiswa kukukhanya kwe-LED okuluhlaza okwesibhakabhaka okuphezulu kakhulu, kungenjalo kuya kuchaphazela ukukhula kwangemva.

2. Ukukhanya okunamandla kunempembelelo ebalulekileyo ekuhlukaniseni iiseli kunye namalungu ezityalo zevatala. Ukukhanya okunamandla kwenza izithole zikhule zomelele; ukukhanya okubuthathaka kwenza izithole zikhule zize.

3. Kwinqanaba lokuhluma kwezithole, xa kuthelekiswa nezithole ezinokukhanya okungaphantsi kwe-120 μ mol / m2 · s, izithole ezinokukhanya okungaphezulu kwe-150 μ mol / m2 · s zikhule kancinci xa zifudukela kumhlaba wefama.

Ukukhula kwezithole zevatala bekuyeyona nto ilungileyo xa umlinganiselo wobomvu noluhlaza okwesibhakabhaka wawuyi-5:1. Ngokweziphumo ezahlukeneyo zokukhanya okuluhlaza okwesibhakabhaka kunye nokukhanya okubomvu kwizityalo, eyona ndlela ilungileyo yokukhanyisa kukunyusa ngokufanelekileyo umlinganiselo wokukhanya okuluhlaza okwesibhakabhaka kwinqanaba lokuqala lokukhula kwezithole, kunye nokongeza ukukhanya okubomvu okungakumbi kwinqanaba lokugqibela lokukhula kwezithole; sebenzisa ukukhanya okubuthathaka kwinqanaba lokuqala, uze usebenzise ukukhanya okunamandla kwinqanaba lokugqibela.