Empilweni yethu yanamuhla, izilawuli ezikude ze-infrared sezibe ithuluzi elilula kithi lokulawula izinto zasekhaya. Kusukela kumathelevishini kuya kuma-air conditioner, kanye nakubadlali be-multimedia, ukusetshenziswa kobuchwepheshe be-infrared kutholakala yonke indawo. Kodwa-ke, isimiso sokusebenza ngemuva kokulawula okukude kwe-infrared, ikakhulukazi inqubo yokuguqula kanye nokususa umsindo, ayaziwa kangako. Lesi sihloko sizogxila ekucutshungulweni kwesignali kwesilawuli esikude se-infrared, sembule indlela yaso yokuxhumana esebenza kahle nethembekile.
Ukushintshashintsha: Isigaba Sokulungiselela Isignali
Ukushintshashintsha kuyisinyathelo sokuqala ekudlulisweni kwesignali, okuhilela ukuguqula ulwazi lomyalo lube yifomethi efanele ukudluliselwa okungenantambo. Kulawulo olukude lwe-infrared, le nqubo ivame ukwenziwa kusetshenziswa i-Pulse Position Modulation (PPM).
Izimiso Zokuguqulwa kwe-PPM
I-PPM iyindlela elula yokuguqula edlulisa ulwazi ngokushintsha ubude kanye nesikhala sama-pulse. Inkinobho ngayinye kusilawuli kude inekhodi ehlukile, eguqulwa ku-PPM ibe uchungechunge lwezimpawu ze-pulse. Ububanzi kanye nesikhala sama-pulse kuyahlukahluka ngokwemithetho yokufaka ikhodi, okuqinisekisa ukuhluka kanye nokuqashelwa kwesignali.
Ukuguqulwa Kwenkampani Yenethiwekhi
Ngokusekelwe ku-PPM, isignali nayo idinga ukuguqulwa ibe yimvamisa ethile yesithwali. Imvamisa evamile yesithwali ingu-38kHz, okuyimvamisa esetshenziswa kabanzi kuzilawuli ezikude ze-infrared. Inqubo yokuguqulwa kwezwi ihilela ukuguqula amazinga aphezulu naphansi esignali ebhalwe phansi ibe amagagasi kagesi emvamisa ehambisanayo, okuvumela isignali ukuthi isakazeke emoyeni ngenkathi kunciphisa ukuphazamiseka.
Ukukhulisa kanye Nokukhipha Isignali
Isignali eguquliwe ikhuliswa nge-amplifier ukuqinisekisa ukuthi inamandla anele okudlulisa okungenantambo. Ekugcineni, isignali ikhishwa nge-diode ekhipha i-infrared (i-LED), yakha igagasi lokukhanya le-infrared elidlulisela imiyalo yokulawula kudivayisi eqondiwe.
Ukususwa Kweziphazamiso: Ukwamukelwa Nokubuyiselwa Kwezimpawu
Ukwehliswa kwe-demodulation inqubo ephambene yokuguqulwa kwe-modulation, enesibopho sokubuyisela isignali etholiwe kulwazi lomyalo wokuqala.
Ukwamukelwa Kwesignali
I-diode yokwamukela i-infrared (i-Photodiode) ithola isignali ye-infrared ekhishwayo bese iyiguqula ibe isignali kagesi. Lesi sinyathelo siyisixhumanisi esibalulekile enqubweni yokudlulisa isignali ngoba sithinta ngqo ikhwalithi nokunemba kwesignali.
Ukuhlunga kanye Nokuhlukaniswa Kwemisebenzi
Isignali kagesi etholakele ingase ibe nomsindo futhi idinga ukucutshungulwa ngesihlungi ukuze kususwe umsindo futhi kugcinwe amasignali eduze kwemvamisa yokuthwala. Ngemva kwalokho, i-demodulator ithola indawo yama-pulse ngokwesimiso se-PPM, ibuyisele ulwazi lokuqala olufakwe ikhodi.
Ukucubungula Nokuhlela Amakhodi Ezignali
Isignali ehlukanisiwe ingadinga ukucutshungulwa okwengeziwe kwesignali, njengokukhulisa nokubumba, ukuqinisekisa ukuzinza nokunemba kwesignali. Isignali ecutshunguliwe ibe isithunyelwa ku-microcontroller ukuze ikwazi ukuqopha ikhodi, ekhomba ikhodi yokuhlonza idivayisi kanye nekhodi yokusebenza ngokwemithetho yokubhala ikhodi esethiwe.
Ukwenziwa Kwemiyalo
Uma ukuqopha sekuphumelele, i-microcontroller isebenzisa imiyalelo ehambisanayo ngokusekelwe kukhodi yokusebenza, njengokulawula ukushintsha kwedivayisi, ukulungiswa kwevolumu, njll. Le nqubo iphawula ukuqedwa kokugcina kokudluliswa kwesignali kwesilawuli kude se-infrared.
Isiphetho
Inqubo yokuguqulwa nokususwa kwe-infrared remote control iyona eyinhloko yendlela yayo yokuxhumana esebenza kahle nethembekile. Ngale nqubo, singafinyelela ukulawula okunembile kwezinto zasendlini. Ngokuthuthuka okuqhubekayo kobuchwepheshe, izilawuli ezikude ze-infrared nazo zihlala zithuthukiswa futhi zithuthukiswa ukuze zihlangabezane nezidingo zethu zokulawula ezikhulayo. Ukuqonda le nqubo akusisizi nje kuphela ukusebenzisa izilawuli ezikude ze-infrared kangcono kodwa futhi kusenza sibe nokuqonda okujulile kobuchwepheshe bokuxhumana obungenantambo.
Isikhathi sokuthunyelwe: Agasti-16-2024
