Izici ezithonya iphutha lesistimuama-photodetectors
Kunemingcele eminingi ehlobene nephutha lesistimu lama-photodetector, futhi izinto ezicatshangelwayo ziyahlukahluka ngokuya ngezinhlelo zokusebenza ezahlukene zephrojekthi. Ngakho-ke, i-JIMU Optoelectronic Research Assistant yathuthukiswa ukusiza abacwaningi be-optoelectronic ukuxazulula ngokushesha iphutha lesistimu lama-photodetector futhi bakhe ngokushesha izinhlelo ze-optoelectronic, ngaleyo ndlela kufinyezwe umjikelezo wephrojekthi futhi kugwenywe ukuqala kusukela ekuqaleni kokuhlaziywa nokuklama.
3. Ukumelana
(1) Inani lokumelana: Ukukhethwa kwamanani okumelana afanele kuhilelekile ku-amplification factor yama-amplifiers okusebenza, ukumelana kokulinganisela, ukuhlunga kwe-RC, njll. Inani lokumelana akufanele libe likhulu kakhulu, njengoba inani lokumelana likhulu, isignali iba buthakathaka, ukusebenza kokumelana nokuphazamiseka kuba buthakathaka, futhi umsindo omhlophe we-Gaussian uba mkhulu. Akufanele futhi kube kuncane kakhulu, njengoba ukusetshenziswa kwamandla kuzokwanda futhi kungadala ukushisa futhi kuthinte isikhathi sokuphila.
(2) Amandla: Qinisekisa ukuthi i-P=I^2*R ayidluli amandla ayo alinganiselwe, futhi ukuze uvimbele i-resistor ekushiseni ngokweqile, akufanele idlule ingxenye yamandla ayo alinganiselwe.
(3) Ukunemba: Akunawo umthelela omkhulu ekunembeni kohlelo lokulungisa kabusha.
(4) Ukukhukhuleka kwezinga lokushisa: Ukukhukhuleka kwezinga lokushisa kwama-resistor kuyisici esibalulekile sokucatshangelwa ekubalweni kwamaphutha ahlelekile.
4. I-Capacitor
(1) Inani le-Capacitance: Kumasekethe ahlobene ne-RC filt, ama-time constant, njll., inani le-capacitance lidinga ukubalwa ngokunembile. Umklamo wesistimu awukwazi ukunganaki i-time constant yokusungulwa kwesignali ukuze nje uhlunge ama-interference frequency. Kuyadingeka ukucabangela izidingo ze-frequency domain kanye ne-time domain ngesikhathi esisodwa ukuze kuhlangatshezwane nezidingo zokuhlunga kanye nesikhathi sokusungulwa kwesignali.
(2) Ukunemba: Uma uhlelo lwakho lokusebenza luhlobene nezimpawu zemvamisa ephezulu noma ludinga i-bandwidth ephezulu yokuhlunga, udinga ukukhetha ama-capacitor ngokunemba okuphezulu. Ngokuvamile, izidingo zokunemba zama-capacitor azibucayi kakhulu.
(3) Ukukhukhuleka kwezinga lokushisa.
(4) Ukumelana nokucindezela: Kumelwe kuhlangabezane nezindinganiso zokuklama ukuncishiswa, kanye nomkhawulo ojwayelekile wokusetshenziswa kokuncishiswa okungu-20%.
4. Izinga lokushisa lokusebenza
(1) Nquma ububanzi bokushisa bokusebenza ngokusekelwe ezidingweni zomkhiqizo we-photodetector. Isibonelo: Ububanzi bokushisa bokusebenza be-IVD ethile yezokwelaphaumkhiqizo we-photodetectoringu-10 kuya ku-30℃. Lesi sidingo sokushisa sibaluleke kakhulu ngoba amapharamitha ahlobene nokukhukhuleka kokushisa kwezingxenye ezifana nama-amplifiers okusebenza, ama-resistor, nama-ADC okukhulunywe ngawo ngaphambili konke kuhlobene eduze nezidingo zokushisa zokusebenza zomkhiqizo. Uma kucatshangelwa ububanzi bomehluko wokushisa kanye nomthelela womehluko wokushisa ngaphansi kwezimo zangempela zemvelo zokusetshenziswa, kuqinisekiswa ukuthi umthelela ophelele wezinguquko kupharamitha ngayinye ngaphakathi kwalolu bubanzi bokushisa awudluli isidingo sokugcina seuhlelo lwe-photoelectriciphutha.
(2) Nquma ukuthi ngabe kunezingxenye ezizwela umswakama nokuthi ngabe izidingo zendawo yomswakama ziyahlangatshezwana yini: Nquma ububanzi bezinguquko zomswakama endaweni yokusebenza kanye nemingcele yamadivayisi ezizwela umswakama athinta imiphumela.
5. Ukuqina nokuthembeka kohlelo kuhambisana nokwakheka kokuqina kwe-photodetector. Imfuneko yokwenza izibalo zamaphutha ohlelo ezifanele ukuthi uhlelo luzinzile futhi akufanele luthinteke yindawo ehlobene ne-EMC; ngaphandle kwalokho, konke ukubala akunamsebenzi. Ngenxa yokulinganiselwa kwesikhala, lesi sahluko ngeke sichaze kabanzi. Izici ezimbili ezilandelayo kufanele zicatshangelwe kakhulu. Ekwakhiweni kwesekethe, kufanele kuthathwe izinyathelo zokuvikela eziqinile kanye nezinyathelo zokugwema i-EMI kanye ne-EMS. B. I-casing, ukuvikela izintambo ezixhumanisayo, izindlela zokufaka isisekelo, njll. nazo zidinga ukuhlaziywa nokuqinisekiswa.
Isikhathi sokuthunyelwe: Okthoba-13-2025