Muna amfani da kukis don haɓaka ƙwarewar bincikenku, bincika da auna haɗin gwiwa tare da abun cikinmu. Ta danna "Karɓa", kun yarda da amfani da kukis.
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Yaya Thermal Hoto Hoto Aiki?
Ranar fitarwa: 2023-03-07 00:00:00
Tushen labarin: Thermtec
Dubawa: 354
Kyamarorin hoto na thermal suna gani fiye da abin da idon ɗan adam ke iya gani.

 

Misali, a karkashin barkewar sabuwar kwayar cutar kambi na baya-bayan nan, kyamarori masu daukar hoto na thermal sun mamaye matsayi mai matukar muhimmanci. Maiyuwa ba zai iya gano gaban ƙwayoyin cuta kai tsaye ba. Amma mu kasance masu gaskiya, babu wata na'ura da ta fi kyau a gano zazzabi, babban alamar kamuwa da cuta, daga nesa mai aminci fiye da kyamarar infrared. Ba mamaki yanzu ya zama wurin zama na dindindin a ƙofar manyan kantuna da sauran wuraren taruwar jama'a.

 

Sabili da haka, fahimtar fahimtar yadda kyamarorin hoto na thermal ke aiki yana da mahimmanci. Ta hanyar samun ƙarin ilimi, za ku sami damar samun mafi kyawun kyamarar hoton ku kamar yadda ta canza rayuwarmu a Duniya. Kuma galibi, lokacin da kuke son ci gaba da tafiyar da al'amura yadda ya kamata, za ku iya zama masu fa'ida da inganci.

 

Ciki mai hoto na thermal: yadda yake aiki

 

Sanin abin da infrared radiation abu daya ne, kama shi wani abu ne. Dole ne mu fahimci cewa hoton zafi kamar yadda muka san shi a yau shine samfur na dogon lokaci mai wahala wanda ya ɗauki shekaru da yawa don kammala. A gefe ɗaya, kyamarorinmu na hoto na thermal a yau suna da ƙarfi kuma suna da sauƙin amfani. Ba wai kawai suna da nauyi da tsada ba, sabanin waɗanda masu kashe gobara suka yi amfani da su shekaru da yawa da suka gabata.

 

Tun da an ƙera kyamarorin hoto na thermal don ɗaukar makamashin zafi a cikin mahallin da ke kewaye, an tsara manyan abubuwan su don sarrafa hasken infrared. Wannan gaskiya ne musamman ga naúrar shigarwa. Muna magana ne game da ruwan tabarau da na'urori masu auna firikwensin, hanyar da infrared radiation ya bi ta.

 

Lens

 

Yi tunanin ruwan tabarau na kyamarar zafi, kamar fatar ido. Idan fatar idanunku ba su bude ba, ba za ku iya ganin kewayen ku ba. A nata bangaren, mai hoton thermal dole ne ya sami ruwan tabarau wanda zai ba IR da mitoci daban-daban damar wucewa. Sai kawai firikwensin zai iya sarrafa siginar.

 

Wannan shine babban bambanci tsakanin kyamarar infrared da daidaitaccen kamara (kyamara a wayarka). Ba kamar kyamarori na yau da kullun ba, ruwan tabarau na kyamarori infrared ba dole ne a yi su da gilashi ba. Lura cewa gilashin yana toshe hasken infrared mai tsayi (LWIR), mitar mafi amfani ga hoton zafi.

 

Saboda haka, ruwan tabarau yawanci ana yin su ne da germanium, zinc selenide, calcium fluoride, ko sapphire. Ta yin haka, ruwan tabarau na iya ɗaukar kewayon sikelin bakan na'urar lantarki ta thermal radiation na 7 zuwa 14μm. Tunda yawancin waɗannan kayan suna da babban maƙasudin refractive, yana da mahimmanci a yi amfani da abin rufe fuska mai karewa zuwa ruwan tabarau don gyara jujjuyawa.

 

Sensor

 

Zuciyar kyamarar hoto ta thermal ita ce firikwensin. A nan ne infrared radiation ya ratsa ta wurin gano zafi. Wannan mai ganowa yana amsa kai tsaye ga karuwar zafi da ke faruwa saboda ɗaukar hasken infrared da ya faru.

 

Duk da haka, bayan lokaci, akwai manyan hanyoyi guda biyu don samun aikin. Sabuwar dabarar da aka saba amfani da ita a yau ita ce ta microbolometers, yayin da wata hanyar ita ce yin amfani da kayan pyroelectric. Cikakkun bayanai sune kamar haka.

 

Microbolometer

 

A ka'ida, na'urar microbolometer na'ura ce mai raɗaɗi. Masanin kimiyyar lissafi/masanin falaki dan kasar Amurka Samuel Pierpont Langley (1834-1906) ne ya kirkiro na'urar bolometer ta farko.

 

Duk wani radiation wanda kai tsaye ya bugi abin sha na microbolometer zai haifar da karuwar zafin jiki daidai. Da yawan kuzarin da ake sha, mafi girman zafin jiki.

 

Ana iya auna wannan canjin yanayin kai tsaye ta amfani da ma'aunin zafi da sanyio. kuma karanta a matsayin siginar lantarki don samar da hoton lantarki. Mahimmanci, microbolometer ya ƙunshi ƙaramin ƙarfe na bakin ciki, wanda aka haɗa kai tsaye zuwa tafki mai zafi (thermostatic) ta hanyar haɗin thermal.

 

Tsare-tsare na firikwensin gida ne ga dubban pixels masu ganowa da aka shirya a cikin grid. Sanin cewa kowane pixel a cikin tsararru yana amsawa ga infrared radiation wanda ya same shi kai tsaye, yana haifar da juriya wanda za'a iya canza shi zuwa siginar lantarki. Ana sarrafa siginar daga kowane pixel ta hanyar amfani da tsarin lissafi wanda ya zama tushen taswirar launi na yanayin yanayin da aka kama. Ana aika hoton launi na gaba zuwa sashin sarrafa kyamara don nunawa.

 

Ku sani cewa kowane pixel yana da microbolometer don ƙarin daidaito. Don haka, ƙudurin kyamarorin thermal yana da ƙasa kaɗan idan aka kwatanta da smart TVs ko kyamarori na al'ada. A gaskiya ma, 640x480 an riga an yi la'akari da babban ƙuduri don kyamarori masu zafi.

 

Kyamarorin hoton zafi na tushen Microbolometer kuma ana san su da kyamarori masu hoto marasa sanyi saboda ba a buƙatar tsarin sanyaya daban don sarrafa firikwensin microbolometer. Fa'idar nan da nan ita ce waɗannan kyamarori na IR sun fi sauƙi idan aka kwatanta da na'urorin sanyaya na gargajiya.

 

Pyroelectric abu

 

Waɗannan kyamarorin zafi ne waɗanda ke amfani da na'urori masu sanyaya sanyi. Misali mai haske shine lithium tantalate. Kayan yana haifar da ƙananan ƙarfin lantarki a cikin martani kai tsaye ga canje-canjen zafin jiki. A wannan ma'ana, yana gano photon infrared kai tsaye. Yana da hotovoltaic maimakon kyamarorin zafi na tushen microbolometer marasa sanyi waɗanda ke amfani da ɗaukar hoto.

 

Kodayake suna ba da fa'idodi da yawa, kamar ganowar infrared mai tsayi mai tsayi da ƙarin ingantattun sakamako na bambancin zafin jiki, sanyaya kyamarorin zafi ana maye gurbinsu da na'urori marasa sanyi a hankali. Wannan ya samo asali ne saboda tsadar farashinsu da manyan jikinsu.

 

Waɗannan na'urori masu gano infrared suna da nauyi ta ma'auni na yau saboda dole ne a haɗa firikwensin hoton su tare da cryocoolers. Don yin muni, sassan motsi a cikin cryocoolers suna da wuyar sawa da tsagewa na tsawon lokaci.

 

Mai sarrafa hoto

 

Bayan samun hasken infrared, dole ne a sarrafa bayanan don ƙirƙirar abubuwan da aka gani akan allon kyamarar infrared. Gudanar da bayanai ya haɗa da aiwatarwa da wuri, cire fasalin, da rarrabuwa. Lura cewa ana amfani da tacewa don cire hayaniya ko bayanan da ba'a so. Anan, ana amfani da algorithms ko lissafin lissafi don samar da hotuna na gani.

 

Nunawa

 

Anan ne bayanai daga na'urar sarrafa kyamara ke jujjuya su zuwa siginar lantarki. Ka tuna cewa ana ɗaukar bayanan da aka faɗi daga kowane pixel (ba a sanyaya ba). Ta hanyar amfani da algorithms na lissafi, ana iya samar da taswirar launi. Wannan yana wakiltar sa hannun yanayin zafi na abin da ake nazari. A baya can, wakilcin achromatic ko baƙi-da-fari sun kasance gama gari a nunin hoto na thermal.

 

Abubuwan da aka bayar na ThermTec

 

ThermTec babban kamfani ne na duniya wanda ke kera samfuran game da fasahar hoto na infrared, yana ba da sabbin fasahohin thermal mafi kyau da mafita waɗanda ke haɓaka yadda mutane ke fahimtar duniya, irin wannan yana gina mafi aminci da ingantaccen rayuwa da yanayin aiki ga ɗan adam.

© ThermTec Technology Co., Ltd. 2023   Taswirar Yanar Gizo Manufar Kuki takardar kebantawa