Indlela Esebenza Ngayo Inkqubo Yokuguqulwa Nokuhlengahlengiswa Kolawulo Olukude Lwe-Infrared

Kubomi bethu banamhlanje, ii-remote controls ze-infrared ziye zaba sisixhobo esilula kuthi sokulawula izixhobo zasekhaya. Ukususela kwiithelevishini ukuya kwii-air conditioners, nakwi-multimedia players, ukusetyenziswa kwetekhnoloji ye-infrared kuxhaphakile. Nangona kunjalo, umgaqo osebenzayo emva kolawulo olukude lwe-infrared, ingakumbi inkqubo yokuguqula kunye nokunciphisa i-modulation, awaziwa kangako. Eli nqaku liza kujonga ekusetyenzisweni kwesignali ye-remote control ye-infrared, lityhila indlela yalo yonxibelelwano esebenzayo nethembekileyo.

Ukuguqulwa kweModulation: Inqanaba loLungiselelo lweSignali

Ukutshintshatshintsha linyathelo lokuqala lokudlulisela isignali, elibandakanya ukuguqula ulwazi lomyalelo lube yifomathi efanelekileyo yokudlulisela ngaphandle kwentambo. Kwi-infrared remote control, le nkqubo idla ngokwenziwa kusetyenziswa iPulse Position Modulation (PPM).

Imigaqo yokuguqulwa kwePPM

I-PPM yindlela elula yokuguqula ulwazi ngokutshintsha ubude kunye nendawo yee-pulses. Iqhosha ngalinye kwi-remote control linekhowudi eyahlukileyo, ethi kwi-PPM iguqulwe ibe luchungechunge lweesignali ze-pulse. Ububanzi kunye nendawo yee-pulses ziyahluka ngokwemigaqo yokubhala ikhowudi, okuqinisekisa ukuba uphawu luhlukile kwaye luyabonakala.

Ukuguqulwa kweKharityhulam

Ngokusekelwe kwi-PPM, isignali kufuneka ihlengahlengiswe kwi-carrier frequency ethile. I-carrier frequency eqhelekileyo yi-38kHz, eyi-frequency esetyenziswa kakhulu kwii-infrared remote controls. Inkqubo yokuguqula ibandakanya ukuguqula amanqanaba aphezulu naphantsi esignali ekhowudiweyo ibe ngamaza e-electromagnetic e-frequency ehambelanayo, okuvumela isignali ukuba isasazeke ngakumbi emoyeni ngelixa inciphisa ukuphazamiseka.

Ukwandiswa kweSignali kunye nokukhutshwa kwayo

Isignali eguquliweyo iyandiswa nge-amplifier ukuqinisekisa ukuba inamandla aneleyo okudlulisela ngaphandle kwentambo. Okokugqibela, isignali ikhutshwa nge-infrared emitting diode (LED), eyenza i-infrared light wave ehambisa imiyalelo yokulawula kwisixhobo ekujoliswe kuso.

Ukususwa kweMiboniso: Ukwamkelwa kweSignali kunye nokubuyiselwa kwayo

Ukususwa kwe-data yinkqubo echaseneyo yokuguqulwa kwe-data, enoxanduva lokubuyisela isignali efunyenweyo kulwazi lomyalelo wokuqala.

Ukwamkelwa Kwesignali

I-diode yokwamkela i-infrared (i-Photodiode) ifumana isignali ye-infrared ekhutshwayo ize iyiguqule ibe sisignali yombane. Eli nyathelo likhonkco eliphambili kwinkqubo yokudlulisela isignali kuba lichaphazela ngokuthe ngqo umgangatho kunye nokuchaneka kwesignali.

Ukucoca kunye nokunciphisa

Isignali yombane efunyenweyo inokuba nengxolo kwaye kufuneka icutshungulwe ngesihluzo ukuze kususwe ingxolo kwaye kugcinwe imiqondiso kufutshane nefrikhwensi yomthwali. Emva koko, i-demodulator ibona indawo yee-pulses ngokomgaqo we-PPM, ibuyisele ulwazi lokuqala olufakwe kwikhowudi.

Ukucutshungulwa kweSignali kunye nokuCodesha

Isignali ehlaziyiweyo ingafuna ukucutshungulwa ngakumbi kwesignali, njengokwandiswa kunye nokubumba, ukuqinisekisa uzinzo kunye nokuchaneka kwesignali. Isignali ehlaziyiweyo emva koko ithunyelwa kwi-microcontroller ukuze ifumane ikhowudi, echonga ikhowudi yokuchonga isixhobo kunye nekhowudi yokusebenza ngokwemigaqo yokubhala ikhowudi emiselweyo.

Ukuphunyezwa kwemiyalelo

Nje ukuba i-decoding iphumelele, i-microcontroller iphumeza imiyalelo ehambelanayo ngokusekelwe kwikhowudi yokusebenza, njengokulawula iswitshi yesixhobo, ukulungiswa kwevolumu, njl. Le nkqubo iphawula ukugqitywa kokugqibela kokudluliselwa kwesignali ye-infrared remote control.

Isiphelo

Inkqubo yokuguqula nokususa i-infrared remote control yeyona nto iphambili kwindlela yayo yonxibelelwano esebenzayo nethembekileyo. Ngale nkqubo, sinokufikelela kulawulo oluchanekileyo lwezixhobo zasekhaya. Ngokuqhubeka kweteknoloji, ii-infrared remote controls nazo zihlala zilungiswa kwaye ziphuculwa ukuze zihlangabezane neemfuno zethu zolawulo ezikhulayo. Ukuqonda le nkqubo akusincedi nje kuphela ekusebenziseni ii-infrared remote controls ngcono kodwa kusenza sibe nokuqonda okunzulu kwetekhnoloji yonxibelelwano engenazingcingo.