Gabatar da bandwidth da lokacin tashi na na'urar gano hoto

Gabatar da bandwidth da lokacin tashi na na'urar gano hoto

Lokacin da na'urar gano haske ke aiki (wanda kuma aka sani da lokacin amsawa) na na'urar gano haske (photodetector) muhimman abubuwa ne a gwajin na'urar gano haske. Mutane da yawa ba su da masaniya game da waɗannan sigogi guda biyu. Wannan labarin zai gabatar da takamaiman lokacin da na'urar gano haske ke aiki (photodetector) da lokacin da za ta tashi.

Lokacin tashi (τr) da lokacin faɗuwa (τf) dukkansu manyan alamomi ne don auna saurin amsawar masu gano hoto. Matsakaicin bandwidth na 3dB, a matsayin mai nuna alama a yankin mita, yana da alaƙa da lokacin tashi dangane da saurin amsawa. Alaƙar da ke tsakanin bandwidth BW na mai gano hoto da lokacin amsawarsa Tr za a iya canza ta ta hanyar dabarar da ke ƙasa: Tr=0.35/BW.

Lokacin tashi kalma ce a cikin fasahar bugun jini, tana bayyana kuma tana nufin cewa siginar tana tashi daga wani wuri (yawanci: Vout*10%) zuwa wani wuri (yawanci: Vout*90%). Girman gefen hawan siginar Lokacin Tashi gabaɗaya yana nufin lokacin da aka ɗauka don tashi daga 10% zuwa 90%. Ka'idar gwaji: Ana watsa siginar ta wata hanya, kuma ana amfani da wani kan samfurin don samowa da auna ƙimar bugun ƙarfin lantarki a ƙarshen nesa.

Lokacin tashi na siginar yana da matuƙar muhimmanci don fahimtar matsalolin amincin siginar. Yawancin matsalolin da suka shafi aikin aikace-aikacen samfura a cikin ƙirar na'urorin gano bayanai masu saurin gudu suna da alaƙa da shi. Lokacin zaɓar na'urar gano bayanai, dole ne a ba shi isasshen kulawa. Lokacin tashi yana da tasiri mai mahimmanci akan aikin da'ira. Muddin yana cikin wani takamaiman iyaka, dole ne a ɗauke shi da mahimmanci, koda kuwa iyaka ce mara tabbas.

Yayin da lokacin tashi sigina ke raguwa, matsaloli kamar tunani, magana ta hanyar sadarwa, rugujewar kewayawa, hasken lantarki, da kuma tsalle-tsalle a ƙasa da siginar ciki ko siginar fitarwa ta na'urar gano haske ke haifarwa suna ƙara tsananta, kuma matsalar hayaniya tana ƙara wahalar warwarewa. Daga mahangar nazarin spectral, rage lokacin tashi sigina daidai yake da ƙaruwar bandwidth na sigina, wato, akwai ƙarin abubuwan da ke da yawan mitoci a cikin siginar. Waɗannan abubuwan da ke da yawan mitoci ne ke sa ƙirar ta yi wahala. Dole ne a ɗauki layukan haɗin kai a matsayin layukan watsawa, wanda ya haifar da matsaloli da yawa waɗanda ba su wanzu ba a da.

Saboda haka, a cikin tsarin aikace-aikacen na'urorin gano hoto, dole ne ku sami irin wannan ra'ayi: lokacin da siginar fitarwa ta na'urar gano hoto tana da gefen da ke tashi ko ma mai tsanani, kuma siginar ba ta da ƙarfi, yana da yuwuwar cewa na'urar gano hoto da kuka saya ba ta cika buƙatun ƙira masu dacewa don amincin sigina ba kuma ba za ta iya biyan ainihin buƙatun aikace-aikacenku ba dangane da ma'aunin bandwidth da lokacin tashi. Kayayyakin na'urar gano hoto na JIMU Guangyan duk suna yin samfurin sabbin na'urorin gano hoto na zamani, na'urorin auna sauti na aiki mai sauri, da kuma da'irorin tacewa daidai. Dangane da ainihin halayen siginar aikace-aikacen na abokan ciniki, suna daidaita bandwidth da lokacin tashi. Kowane mataki yana la'akari da ingancin siginar. Guji matsaloli na yau da kullun kamar hayaniyar sigina mai yawa da rashin kwanciyar hankali da rashin daidaituwa tsakanin bandwidth da lokacin tashi a cikin aikace-aikacen na'urorin gano hoto ga masu amfani.