Mabuɗin abubuwanmai daukar hotogwaji
Lokacin bandwidth da lokacin tashi (wanda kuma aka sani da lokacin amsawa) na masu binciken hoto, azaman mahimman abubuwa a cikin gwajin masu ganowa, a halin yanzu sun jawo hankalin masu binciken optoelectronic da yawa. Koyaya, marubucin ya gano cewa mutane da yawa ba su da fahimtar waɗannan sigogi guda biyu kwata-kwata. A yau, JIMu Optoresearch zai gabatar da takamaiman bandwidth da haɓaka lokacin masu gano hoto ga kowa da kowa.
A cikin labarin da ya gabata game da zaɓin mahimman sigogi donphotodiodes, Mun gabatar da cewa duka lokacin tashi (τr) da lokacin faɗuwa (τf) sune mahimman alamomi don auna saurin amsawa na masu binciken hoto. 3dB bandwidth, a matsayin mai nuna alama a cikin yankin mitar, yana da alaƙa da kusanci da lokacin tashin hankali dangane da saurin amsawa. Dangantakar da ke tsakanin bandwidth BW na mai gano hoto da lokacin amsawa Tr za a iya jujjuya shi ta hanyar dabara mai zuwa: Tr=0.35/BW.
Lokacin tashi shine kalma a cikin fasahar bugun jini, yana bayyanawa da ma'ana cewa siginar yana tashi daga aya ɗaya (yawanci: Vout * 10%) zuwa wani wuri (yawanci: Vout*90%). Girman gefen tashin siginar Lokacin Tashi gabaɗaya yana nufin lokacin da aka ɗauka ya tashi daga 10% zuwa 90%. Ƙa'idar gwaji: Ana watsa siginar tare da wata hanya, kuma ana amfani da wani samfurin samfurin don samu da auna ƙimar bugun bugun jini a ƙarshen nesa.
Lokacin tashin sigina yana da mahimmanci don fahimtar al'amuran amincin siginar. Mafi yawan matsalolin da suka shafi aikin aikace-aikacen samfurin a cikin ƙira nahigh-gudun photodetectorsuna hade da shi. Lokacin zabar na'urar gano hoto, dole ne ku kula da shi sosai. Yana da mahimmanci mu kafa ra'ayi cewa lokacin tashi yana da tasiri mai mahimmanci akan aikin kewayawa. Muddin yana cikin wani yanki na musamman, dole ne a dauki shi da mahimmanci, koda kuwa yana da ma'ana sosai. Babu buƙatar ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun wannan kewayon, kuma ba shi da mahimmancin aiki. Ka tuna cewa fasahar sarrafa guntu na yanzu ta sanya wannan lokacin gajere sosai, ya kai matakin ps. Lokaci ya yi da za ku kula da tasirinsa.
Yayin da lokacin hawan sigina ya ragu, matsaloli kamar su tunani, crosstalk, orbit rushewa, electromagnetic radiation, da bounce na ƙasa da ke haifar da siginar ciki ko fitarwa na photodetector ya zama mai tsanani, kuma matsalar amo yana da wuyar warwarewa. Daga hangen nesa na bincike, raguwar lokacin hawan sigina daidai yake da karuwa a cikin bandwidth na sigina, wato, akwai ƙarin abubuwan haɓakawa a cikin siginar. Daidai waɗannan abubuwan daɗaɗɗen mitoci ne ke sa ƙirar ke da wahala. Dole ne a dauki layukan haɗin kai a matsayin layin watsawa, wanda ya haifar da matsalolin da yawa waɗanda ba su wanzu a da.
Saboda haka, a cikin aikace-aikacen aikace-aikacen na'urar daukar hoto, dole ne ku sami irin wannan ra'ayi: lokacin da siginar fitarwa na photodetector yana da tsayin tsayi mai tsayi ko ma daɗaɗɗa mai ƙarfi, kuma siginar ba ta da ƙarfi, yana da yuwuwar cewa mai gano hoto da kuka saya bai dace da buƙatun ƙira masu dacewa don amincin siginar ba kuma ba zai iya saduwa da ainihin buƙatun aikace-aikacen ku dangane da bandwidth da sigogin lokacin tashi ba. Samfuran injin gano wutar lantarki na JIMU Guangyan duk samfuran sabbin kwakwalwan kwamfuta na hoto na ci gaba, kwakwalwan ƙararrawa mai saurin aiki, da ingantattun hanyoyin tacewa. Dangane da ainihin halayen siginar aikace-aikacen abokan ciniki, sun dace da bandwidth da lokacin tashi. Kowane mataki yana la'akari da amincin siginar. Guji matsalolin gama gari kamar ƙarar sigina da rashin kwanciyar hankali da ke haifar da rashin daidaituwa tsakanin bandwidth da lokacin tashi a aikace-aikacen masu gano hoto don masu amfani.
Lokacin aikawa: Satumba-15-2025