A cikin rayuwarmu ta zamani, na'urorin nesa na infrared sun zama kayan aiki mai dacewa a gare mu don sarrafa kayan aikin gida. Daga talabijin zuwa na'urorin sanyaya iska, da kuma 'yan wasan multimedia, aikace-aikacen fasahar infrared yana da yawa. Duk da haka, ƙa'idar aiki a bayan infrared ramut, musamman tsarin daidaitawa da ƙaddamarwa, ba a san shi ba. Wannan labarin zai zurfafa cikin sarrafa siginar na'urar ramut na infrared, yana bayyana ingantacciyar hanyar sadarwar sa kuma abin dogaro.
Modulation: Matsayin Shiri na Siginar
Modulation shine mataki na farko na watsa sigina, wanda ya haɗa da canza bayanin umarni zuwa tsarin da ya dace da watsa mara waya. A cikin na'ura mai nisa ta infrared, yawanci ana yin wannan tsari ta amfani da Tsarin Matsayin Pulse (PPM).
Ka'idojin Modulation na PPM
PPM wata dabara ce mai sauƙi ta daidaitawa wacce ke isar da bayanai ta hanyar canza tsawon lokaci da tazarar bugun bugun jini. Kowane maɓalli a kan ramut yana da lambar musamman, wanda a cikin PPM an canza shi zuwa jerin siginar bugun jini. Nisa da tazarar bugun bugun ya bambanta bisa ga ka'idodin coding, yana tabbatar da keɓantacce da ganewar siginar.
Modulation mai ɗaukar kaya
Dangane da PPM, siginar kuma yana buƙatar daidaita shi zuwa takamaiman mitar mai ɗauka. Mitar mai ɗauka gama gari ita ce 38kHz, wanda mitar ce da ake amfani da ita sosai a cikin infrared ramut. Tsarin gyare-gyaren ya haɗa da canza maɗaukaki da ƙananan matakan siginar da aka sanya a cikin raƙuman ruwa na lantarki na mitar da ta dace, yana barin siginar yaduwa a cikin iska yayin rage tsangwama.
Ƙara Sigina da fitarwa
Ana haɓaka siginar da aka daidaita ta hanyar amplifier don tabbatar da tana da isasshen ƙarfi don watsa mara waya. A ƙarshe, siginar yana fitowa ta hanyar infrared emitting diode (LED), yana samar da hasken infrared wanda ke isar da umarnin sarrafawa zuwa na'urar da aka yi niyya.
Rushewa: liyafar sigina da maidowa
Rushewa shine tsarin juzu'i na daidaitawa, alhakin maido da siginar da aka karɓa cikin bayanan umarni na asali.
liyafar sigina
Diode mai karɓar infrared (Photodiode) yana karɓar siginar infrared da aka fitar kuma ya canza shi zuwa siginar lantarki. Wannan matakin shine maɓalli mai mahimmanci a cikin tsarin watsa siginar saboda kai tsaye yana rinjayar inganci da daidaiton siginar.
Tace da Rushewa
Siginar lantarki da aka karɓa na iya ƙunsar amo kuma yana buƙatar sarrafa ta ta tacewa don cire hayaniya da riƙe sigina kusa da mitar mai ɗauka. Daga baya, demodulator yana gano matsayi na bugun jini bisa ga ka'idar PPM, yana maido da ainihin bayanan rufaffiyar.
Sarrafa sigina da yankewa
Siginar da aka lalatar na iya buƙatar ƙarin sarrafa siginar, kamar haɓakawa da siffa, don tabbatar da daidaito da daidaiton siginar. Ana aika siginar da aka sarrafa zuwa microcontroller don yankewa, wanda ke gano lambar gano na'urar da lambar aiki bisa ga ƙa'idodin coding da aka saita.
Aiwatar da Umarni
Da zarar ƙaddamarwar ta yi nasara, microcontroller yana aiwatar da umarnin da suka dace dangane da lambar aiki, kamar sarrafa canjin na'urar, daidaita ƙarar, da dai sauransu. Wannan tsari yana nuna ƙarshen ƙarshe na watsa siginar na'urar ramut infrared.
Kammalawa
Tsarin daidaitawa da ƙaddamarwa na infrared ramut shine tushen ingantacciyar hanyar sadarwar sa mai inganci. Ta wannan tsari, za mu iya cimma daidaitaccen sarrafa kayan aikin gida. Tare da ci gaba da ci gaban fasaha, infrared ramut suma ana inganta su akai-akai da haɓakawa don biyan bukatun mu masu girma. Fahimtar wannan tsari ba wai kawai yana taimaka mana mu yi amfani da na'urorin nesa na infrared mafi kyau ba amma kuma yana ba mu damar samun zurfin fahimtar fasahar sadarwar mara waya.
Lokacin aikawa: Agusta-16-2024
