Umthombo Wesihloko: Ijenali Yocwaningo Lwemishini Yezolimo;

Umbhali: Yingying Shan, Xinmin Shan, Song Gu.

I-Watermelon, njengesitshalo esivamile sezomnotho, inesidingo esikhulu semakethe kanye nezidingo zekhwalithi ephezulu, kodwa ukutshalwa kwezithombo zayo kunzima kwi-melon ne-eggplant. Isizathu esiyinhloko ukuthi: i-watermelon iyisitshalo esithanda ukukhanya. Uma kungekho ukukhanya okwanele ngemva kokuba isithombo se-watermelon siphukile, sizokhula kakhulu futhi sakhe izithombo eziphakeme, okuthinta kakhulu ikhwalithi yezithombo kanye nokukhula kamuva. I-watermelon kusukela ekuhlwanyelweni kuya ekutshalweni kwenzeka phakathi kukaDisemba walowo nyaka noFebhuwari wonyaka olandelayo, okuyisizini enezinga lokushisa eliphansi kakhulu, ukukhanya okubuthakathaka kakhulu kanye nesifo esibi kakhulu. Ikakhulukazi eningizimu yeShayina, kuvamile kakhulu ukuthi kungabikho ukukhanya kwelanga izinsuku eziyi-10 kuya kwengxenye yenyanga ekuqaleni kwentwasahlobo. Uma kunesimo sezulu esiguqubele nesinamafu esiqhubekayo, kuzobangela ngisho nenani elikhulu lezithombo ezifile, okuzolimaza kakhulu ukulahlekelwa komnotho kwabalimi.

Indlela yokusebenzisa umthombo wokukhanya okwenziwe, isib. ukukhanya okuvela ekukhanyeni kwe-LED, ukufaka "umanyolo okhanyayo" ezitshalweni okuhlanganisa nezithombo zekhabe ngaphansi kwesimo sokukhanya kwelanga okwanele, ukuze kufezwe injongo yokwandisa isivuno, ukusebenza kahle okuphezulu, ikhwalithi ephezulu, ukumelana nezifo kanye nokungabi nokungcola ngenkathi kukhuthazwa ukukhula nokuthuthukiswa kwezitshalo, kube yisiqondiso esiyinhloko socwaningo lososayensi bezokukhiqiza kwezolimo iminyaka eminingi.

Eminyakeni yamuva nje, ucwaningo luphinde lwathola ukuthi isilinganiso esihlukile sokukhanya okubomvu nokuluhlaza okwesibhakabhaka naso sibe nomthelela omkhulu ekukhuleni kwezithombo zezitshalo. Isibonelo, umcwaningi uTang Dawei nabanye bathole ukuthi i-R / b = 7:3 iyisilinganiso esihle kakhulu sokukhanya okubomvu nokuluhlaza okwesibhakabhaka sokukhula kwezithombo zekhukhamba; umcwaningi uGao Yi nabanye baveze ephepheni labo ukuthi i-R / b = 8:1 umthombo wokukhanya okuxubile uwukulungiselelwa kokukhanya okwengeziwe okufaneleka kakhulu ekukhuleni kwezithombo zeLuffa.

Ngaphambilini, abanye abantu bazama ukusebenzisa imithombo yokukhanya yokwenziwa njengezibani ze-fluorescent kanye nezibani ze-sodium ukuze benze izivivinyo zokutshala izithombo, kodwa umphumela awuzange ube muhle. Kusukela ngawo-1990, kube nocwaningo mayelana nokutshalwa kwezithombo kusetshenziswa izibani ze-LED njengemithombo yokukhanya eyengeziwe.

Izibani ze-LED ezikhulayo zinezinzuzo zokonga amandla, ukuvikelwa kwemvelo, ukuphepha nokuthembeka, impilo ende yesevisi, usayizi omncane, isisindo esincane, ukukhiqizwa kokushisa okuphansi kanye nokusabalala kokukhanya okuhle noma ukulawula okuhlanganisiwe. Zingahlanganiswa ngokwezidingo zokuthola ukukhanya okumsulwa kwe-monochromatic kanye ne-composite spectrum, futhi izinga lokusetshenziswa okuphumelelayo kwamandla okukhanya lingafinyelela ku-80% - 90%. Kubhekwa njengomthombo wokukhanya ongcono kakhulu ekulimeni.

Njengamanje, kwenziwe ucwaningo oluningi ngokutshalwa kwelayisi, ukhukhamba kanye nesipinashi ngomthombo wokukhanya we-LED omsulwa eShayina, futhi kwenziwe intuthuko ethile. Kodwa-ke, ngezithombo zamakhabe okunzima ukuzikhulisa, ubuchwepheshe bamanje busalokhu busesigabeni sokukhanya kwemvelo, kanti ukukhanya kwe-LED kusetshenziswa kuphela njengomthombo wokukhanya owengeziwe.

I Ngenxa yezinkinga ezingenhla, leli phepha lizozama ukusebenzisa ukukhanya kwe-LED njengomthombo wokukhanya omsulwa ukuze kufundwe ukuthi kungenzeka yini ukuzalanisa izithombo ze-watermelon kanye nesilinganiso esihle kakhulu sokukhanya ukuze kuthuthukiswe ikhwalithi yezithombo ze-watermelon ngaphandle kokuthembela elangeni, ukuze kuhlinzekwe ngesisekelo semfundiso kanye nokusekelwa kwedatha yokulawula ukukhanya kwezithombo ze-watermelon ezindaweni zokusebenza.

A.Inqubo yokuhlola nemiphumela

1. Izinto zokuhlola kanye nokwelashwa okulula

I-watermelon ZAOJIA 8424 yasetshenziswa kulolu cwaningo, kanti indawo yokutshala izithombo kwakuyiJinhai Jinjin 3. Indawo yokuhlola yakhethwa efektri yokukhulisa izibani ze-LED eQuzhou City kanti imishini yokukhanyisa izibani ze-LED yasetshenziswa njengomthombo wokukhanya kokuhlola. Ukuhlolwa kwathatha imijikelezo emi-5. Isikhathi sokuhlola esisodwa sasiyizinsuku ezingama-25 kusukela ekucwilisweni kwembewu, ukuhluma kuya ekukhuleni kwezithombo. Isikhathi sokukhanya sasingamahora ayi-8. Izinga lokushisa langaphakathi laliyi-25 ° kuya ku-28 ° emini (7:00-17:00) kanye ne-15 ° kuya ku-18 ° kusihlwa (17:00-7:00). Umswakama ozungezile wawuyi-60% - 80%.

Ubuhlalu be-LED obomvu noluhlaza okwesibhakabhaka busetshenziswa ekukhanyeni kwe-LED, obunobude obubomvu obungu-660nm kanye nobude obuluhlaza obungu-450nm. Ekuhlolweni, ukukhanya okubomvu nokuluhlaza okwesibhakabhaka okunesilinganiso sokukhanya esikhanyayo esingu-5:1, 6:1 kanye no-7:13 kwasetshenziswa ukuqhathanisa.

2. Inkomba yokulinganisa kanye nendlela

Ekupheleni komjikelezo ngamunye, izithombo ezintathu zakhethwa ngokungahleliwe ukuze kuhlolwe ikhwalithi yezithombo. Izinkomba zazihlanganisa isisindo esomile nesisha, ukuphakama kwesitshalo, ububanzi besiqu, inombolo yeqabunga, indawo ethile yeqabunga kanye nobude bempande. Phakathi kwazo, ukuphakama kwesitshalo, ububanzi besiqu kanye nobude bempande kungalinganiswa nge-vernier caliper; inombolo yeqabunga kanye nenombolo yempande kungabalwa ngesandla; isisindo esomile nesisha kanye nendawo ethile yeqabunga kungabalwa ngerula.

3. Ukuhlaziywa kwezibalo zedatha

4. Imiphumela

Imiphumela yokuhlolwa iboniswe kuThebula 1 kanye nezibalo 1-5.

Kusukela kuthebula 1 kanye nomfanekiso 1-5, kungabonakala ukuthi ngokwanda kwesilinganiso sokukhanya nokudlula, isisindo esisha esomile siyancipha, ukuphakama kwesitshalo kuyanda (kukhona into yobude obungenamsebenzi), isiqu sesitshalo siya siba sincane futhi sincipha, indawo ethile yamaqabunga iyancipha, kanti ubude bempande bufushane futhi bufushane.

B.Ukuhlaziywa kwemiphumela nokuhlolwa

1. Uma isilinganiso sokukhanya nokudlula singu-5:1, ukukhula kwezithombo zekhabe kungcono kakhulu.

2. Isithombo esincane esikhanyiswa ukukhanya kwe-LED okunesilinganiso sokukhanya okuluhlaza okwesibhakabhaka okuphezulu sibonisa ukuthi ukukhanya okuluhlaza okwesibhakabhaka kunomphumela ocacile wokucindezela ekukhuleni kwesitshalo, ikakhulukazi esiqwini sesitshalo, futhi akunathonya elicacile ekukhuleni kwamaqabunga; ukukhanya okubomvu kukhuthaza ukukhula kwesitshalo, futhi isitshalo sikhula ngokushesha lapho isilinganiso sokukhanya okubomvu sikhulu, kodwa ubude baso busobala, njengoba kuboniswe kuMfanekiso 2.

3. Isitshalo sidinga isilinganiso esihlukile sokukhanya okubomvu nokuluhlaza okwesibhakabhaka ngezikhathi ezahlukene zokukhula. Isibonelo, izithombo zekhabe zidinga ukukhanya okuluhlaza okwesibhakabhaka okwengeziwe esigabeni sokuqala, okungavimbela ngempumelelo ukukhula kwezithombo; kodwa esigabeni sokugcina, sidinga ukukhanya okubomvu okwengeziwe. Uma isilinganiso sokukhanya okuluhlaza okwesibhakabhaka sihlala siphezulu, isithombo sizoba sincane futhi sibe sifushane.

4. Ukukhanya kwesithombo sekhabe esigabeni sokuqala akufanele kube namandla kakhulu, okuzothinta ukukhula kwezithombo kamuva. Indlela engcono ukusebenzisa ukukhanya okubuthakathaka esigabeni sokuqala bese usebenzisa ukukhanya okunamandla kamuva.

5. Ukukhanya okufanelekile kokukhanya kwe-LED kufanele kuqinisekiswe. Kutholakale ukuthi uma ukukhanya kuphansi kakhulu, ukukhula kwezithombo kubuthakathaka futhi kulula ukukukhulisa ngeze. Kufanele kuqinisekiswe ukuthi ukukhanya okuvamile kokukhula kwezithombo akukwazi ukuba ngaphansi kuka-120wml; noma kunjalo, ushintsho lomkhuba wokukhula kwezithombo ngokukhanya okuphezulu kakhulu alubonakali, futhi ukusetshenziswa kwamandla kuyanda, okungasizi ekusetshenzisweni kwefektri esikhathini esizayo.

CImiphumela

Imiphumela ikhombisile ukuthi kwakungenzeka ukusebenzisa umthombo wokukhanya we-LED omsulwa ukutshala izithombo ze-watermelon egumbini elimnyama, kanti ukukhanya okungu-5:1 kwakusiza kakhulu ekukhuleni kwezithombo ze-watermelon kunezikhathi ezingu-6 noma ezingu-7. Kunamaphuzu amathathu abalulekile ekusetshenzisweni kobuchwepheshe be-LED ekutshalweni kwezithombo ze-watermelon ezimbonini.

1. Isilinganiso sokukhanya okubomvu nokuluhlaza okwesibhakabhaka sibaluleke kakhulu. Ukukhula kwasekuqaleni kwezithombo zekhabe akukwazi ukukhanyiswa ukukhanya kwe-LED okunokukhanya okuluhlaza okwesibhakabhaka okuphezulu kakhulu, ngaphandle kwalokho kuzothinta ukukhula kwakamuva.

2. Ukukhanya okunamandla kunethonya elibalulekile ekuhlukaniseni amangqamuzana nezitho zezithombo zekhabe. Ukukhanya okunamandla kwenza izithombo zikhule ziqine; ukukhanya okubuthakathaka kwenza izithombo zikhule ngeze.

3. Esigabeni sokutshala izithombo, uma kuqhathaniswa nezithombo ezinokukhanya okuphansi kuka-120 μ mol / m2 · s, izithombo ezinokukhanya okuphakeme kuka-150 μ mol / m2 · s zakhula kancane lapho zithuthela epulazini.

Ukukhula kwezithombo zekhabe kwakungcono kakhulu lapho isilinganiso sokubomvu nokuluhlaza okwesibhakabhaka sasingu-5:1. Ngokusho kwemiphumela ehlukene yokukhanya okuluhlaza okwesibhakabhaka nokukhanya okubomvu ezitshalweni, indlela engcono kakhulu yokukhanyisa ukwandisa ngokufanele isilinganiso sokukhanya okuluhlaza okwesibhakabhaka esigabeni sokuqala sokukhula kwezithombo, nokwengeza ukukhanya okubomvu okwengeziwe esigabeni sokugcina sokukhula kwezithombo; sebenzisa ukukhanya okubuthakathaka esigabeni sokuqala, bese usebenzisa ukukhanya okunamandla esigabeni sokugcina.