Na'urori masu auna firikwensin fiber na gani yawanci suna amfani da fiber na gani azaman sigina na sigina, wanda za'a haɗa photometric tare da spectrometer don bincike na gani.Saboda dacewa da fiber na gani, masu amfani na iya zama masu sassauƙa sosai don gina tsarin sayan bakan.
Amfanin fiber optic spectrometers shine daidaitawa da sassaucin tsarin ma'auni.Microna gani fiber spectrometerdaga MUT a Jamus yana da sauri sosai cewa ana iya amfani dashi don nazarin kan layi.Kuma saboda amfani da na'urori masu rahusa na duniya, an rage farashin spectrometer, don haka farashin duk tsarin ma'auni ya ragu.
Mahimman tsari na filaye na gani na fiber na gani ya ƙunshi grating, slit, da mai ganowa.Dole ne a ƙayyade ma'auni na waɗannan abubuwan haɗin gwiwa yayin siyan na'urar sikeli.Ayyukan spectrometer ya dogara da daidaitattun haɗin kai da daidaitawar waɗannan abubuwan, bayan daidaitawa na spectrometer fiber na gani, a ka'ida, waɗannan na'urorin haɗi ba za su iya samun canje-canje ba.
Gabatarwar aiki
grating
Zaɓin grating ya dogara da kewayon kallo da buƙatun ƙuduri.Don na'urar gani na fiber optic, kewayon kallon yawanci yana tsakanin 200nm da 2500nm.Saboda abin da ake buƙata na ƙuduri mai girma, yana da wuya a sami kewayo mai faɗi;A lokaci guda, mafi girman abin da ake buƙata na ƙuduri, ƙarancin haske.Don buƙatun ƙananan ƙuduri da kewayon gani mai faɗi, 300 layi / mm grating shine zaɓi na yau da kullun.Idan ana buƙatar ƙudiri mai girman gaske, ana iya samun shi ta zaɓin grating mai layin 3600 / mm, ko zaɓar mai ganowa tare da ƙarin ƙudurin pixel.
tsaga
Ramin kunkuntar zai iya inganta ƙuduri, amma hasken haske ya fi karami;A gefe guda, slits masu fadi na iya ƙara yawan hankali, amma a farashin ƙuduri.A cikin buƙatun aikace-aikacen daban-daban, an zaɓi faɗin tsaga da ya dace don haɓaka sakamakon gwajin gaba ɗaya.
bincike
Mai ganowa a wasu hanyoyi yana ƙayyade ƙuduri da azanci na fiber optic spectrometer, yankin da ke da haske akan mai ganowa bisa ƙa'ida yana da iyaka, an raba shi zuwa ƙananan ƙananan pixels don babban ƙuduri ko raba zuwa ƙananan pixels amma girma don girman hankali.Gabaɗaya, ƙwarewar mai gano CCD ya fi kyau, don haka za ku iya samun ingantaccen ƙuduri ba tare da hankali ba zuwa wani lokaci.Saboda tsananin hankali da hayaniyar zafi na mai gano InGaAs a kusa da infrared, ana iya inganta siginar-zuwa amo na tsarin yadda ya kamata ta hanyar firiji.
Tace gani
Saboda tasirin watsa shirye-shiryen multistage na bakan kanta, za a iya rage tsangwama na watsawa ta hanyar amfani da tacewa.Ba kamar na'urori na al'ada ba, fiber optic spectrometers ana lullube su akan na'urar ganowa, kuma wannan ɓangaren aikin yana buƙatar shigar da shi a wurin masana'anta.A lokaci guda kuma, rufin yana da aikin anti-reflection kuma yana inganta siginar sigina zuwa amo na tsarin.
Ayyukan spectrometer an ƙaddara shi ne ta hanyar kewayon gani, ƙudurin gani da hankali.Canji zuwa ɗayan waɗannan sigogi yawanci zai shafi aikin sauran sigogi.
Babban ƙalubale na spectrometer ba shine don haɓaka duk sigogi a lokacin samarwa ba, amma don sanya alamun fasaha na spectrometer ya dace da bukatun aiki don aikace-aikace daban-daban a cikin wannan zaɓi na sararin samaniya mai girma uku.Wannan dabarar tana ba da damar spectrometer don gamsar da abokan ciniki don mafi girman dawowa tare da ƙaramin saka hannun jari.Girman kubu ya dogara ne da alamun fasaha da na'urar ke bukata don cimmawa, kuma girmansa yana da alaƙa da rikitarwa na spectrometer da farashin samfurin spectrometer.Ya kamata samfuran Spectrometer su cika cikakkun sigogin fasaha da abokan ciniki ke buƙata.
Kewayon Spectral
Spectrometerstare da ƙaramin kewayon sifofi yawanci yana ba da cikakkun bayanai na bakan, yayin da manyan kewayon bakan suna da faffadan kewayon gani.Saboda haka, kewayon spectrometer yana ɗaya daga cikin mahimman sigogi waɗanda dole ne a bayyana su a fili.
Abubuwan da ke shafar kewayon bakan sune galibi grating da ganowa, kuma ana zaɓar madaidaicin grating da ganowa bisa ga buƙatu daban-daban.
hankali
Da yake magana game da hankali, yana da mahimmanci a rarrabe tsakanin hankali a cikin hoto (mafi ƙarancin ƙarfin sigina wanda aspectrometerzai iya ganowa) da kuma hankali a cikin stoichiometry (mafi ƙanƙanta bambanci a cikin sha wanda na'urar sikirin zai iya aunawa).
a.Hankalin hoto
Don aikace-aikacen da ke buƙatar manyan na'urori masu hankali, irin su fluorescence da Raman, muna ba da shawarar SEK thermomita mai sanyayawar fiber spectrometers tare da masu sanyayawar zafi 1024 pixel tsararrun tsararrun CCD masu girma biyu, da kuma mai gano ruwan tabarau, madubin gwal, da faffadan tsagewa ( 100 μm ko fiye).Wannan samfurin na iya amfani da tsawon lokacin haɗin kai (daga 7 milliseconds zuwa 15 minutes) don inganta ƙarfin sigina, kuma zai iya rage amo da inganta kewayo mai ƙarfi.
b.Stoichiometric hankali
Don gano ƙima biyu na ƙimar sha tare da girman kusanci sosai, ba kawai ana buƙatar azancin mai ganowa ba, har ma ana buƙatar rabon sigina-zuwa amo.Mai ganowa tare da mafi girman siginar-zuwa amo shine mai sanyaya thermoelectric 1024-pixel mai ganni na CCD mai girma biyu a cikin siginar sigina zuwa amo na 1000:1.Matsakaicin hotuna masu yawa da yawa kuma na iya inganta siginar-zuwa-amo rabo, kuma haɓaka matsakaicin adadin zai haifar da siginar-zuwa-amo rabo ya karu a saurin tushen murabba'i, alal misali, matsakaicin sau 100 na iya. ƙara siginar-zuwa-amo rabo sau 10, kai 10,000:1.
Ƙaddamarwa
Ƙaddamar gani shine muhimmin ma'auni don auna ƙarfin rarrabawar gani.Idan kuna buƙatar ƙudurin gani mai tsayi sosai, muna ba da shawarar ku zaɓi grating mai layin 1200/mm ko sama da haka, tare da kunkuntar tsaga da mai gano CCD 2048 ko 3648 pixel.
Lokacin aikawa: Yuli-27-2023