Jerin Masu Gano Hoto: Gabatarwa ga Mai Gano Hoto Mai Gano Daidaito

Gabatarwa zuwaMai gano Ma'auni Mai aunawa(Mai gano daidaiton lantarki)
Ana iya raba na'urar gano ma'aunin haske zuwa nau'in haɗin fiber optic da nau'in haɗin haske na sarari bisa ga hanyar haɗin haske. A ciki, ya ƙunshi nau'ikan photodiodes guda biyu masu dacewa sosai, ƙaramin amo, babban bandwidth amplifier, da kuma ƙaramin amo mai ƙarfi. Yana da halaye na babban rabo na ƙin yarda da yanayin gama gari, ƙarancin amo, da babban bandwidth, kuma ana amfani da shi sosai a fagen sadarwa mai haɗin kai. Ya zama wurin bincike ga kamfanoni da jami'o'i a ƙasashe daban-daban a cikin 'yan shekarun nan.
Ka'idar aiki na Ma'aunin Mai gano Photodetector (Mai Gano Daidaito na Optoelectronic)
Mai gano haske na Balance Photodetector yana amfani da photodiodes guda biyu a yanayin juyawa a matsayin na'urar karɓar haske. Lokacin karɓar siginar haske, ana cire hasken wutar lantarki da photodiodes guda biyu suka samar kuma a haɗa shi da amplifier transimpedance don canza siginar yanzu zuwa siginar ƙarfin lantarki don fitarwa. Amfani da tsarin rage kai na iya danne siginar yanayin gama gari da hasken oscillator na gida da hasken duhu suka gabatar yadda ya kamata, ƙara siginar yanayin bambanci, da kuma inganta ikon gano siginar haske mai rauni.
Fa'idodi: Babban rabon ƙin yarda da yanayin gama gari, babban hankali, da babban bandwidth na ganowa na iya haɗuwa da yanayi daban-daban na aikace-aikace.
Rashin amfani: Ƙarfin gani mai ƙarancin cikawa, ya dace kawai da gano haske mai rauni, haɗin kai yana buƙatar ingantawa.

FIG: Tsarin aikin na'urar gano ma'auni
Sigogin Aiki na Mai gano Ma'aunin Haske (Optoelectronic)Mai Gano Daidaito)
1. Amsawa
Amsawa yana nufin ingancin photodiode wajen canza siginar haske zuwa photocurrent, wanda shine rabon ƙarfin photocurrent zuwa haske. Zaɓar photodiode mai ƙarfin amsawa zai iya inganta yadda ya kamata na Balance Photodetector.
Amsawa yana nufin ingancin photodiode wajen canza siginar haske zuwa photocurrent, wanda shine rabon ƙarfin photocurrent zuwa haske. Zaɓar photodiode mai ƙarfin amsawa zai iya inganta yadda ya kamata na Balance Photodetector.
2. Bandwidth
Bandwidth yana wakiltar mitar siginar da girman siginar fitarwa na Balance Photodetector ke lalacewa da -3dB, kuma yana da alaƙa da ƙarfin parasitic na photodiode, girman transimpedance, da samfurin gain bandwidth na amplifier aiki.
3. Matsakaicin ƙin yarda da yanayin gama gari
Ana amfani da rabon ƙin yarda da yanayin gama gari don auna matakin danne siginar yanayin gama gari ta hanyar na'urori masu auna daidaito, kuma samfuran kasuwanci gabaɗaya suna buƙatar ƙaramin ƙin yarda da yanayin gama gari na 25dB.
4.NEP
Ƙarfin Daidaita Hayaniya: Ƙarfin siginar shigarwa da ake buƙata a rabon sigina-zuwa-hayaniya na 1, wanda muhimmin ma'auni ne don auna aikin hayaniyar tsarin. Babban abubuwan da ke cikin hayaniyar na'urar ganowa mai daidaito sune hayaniyar watsawa ta gani da hayaniyar lantarki.

Amfani da na'urar gano ma'aunin daidaito (Optoelectronic Balance Detector)
A cikin 'yan shekarun nan, an yi amfani da na'urar gano haske ta Balance Photodetector sosai a fannoni kamar radar iska ta laser, auna girgizar laser, na'urar gano haske mai rauni, gano haske mai ƙarfi, gano iskar gas, da sauransu. Binciken kan babban gudu, babban bandwidth, ƙarancin hayaniya, babban rabo na ƙin yarda da yanayin yau da kullun, da kuma babban ƙarfin na'urorin gano haske masu daidaito ya sami ci gaba kuma yana haɓaka zuwa babban haɗin kai da ƙarancin amfani da wutar lantarki don biyan yanayi daban-daban na aikace-aikace.