Isebenza kanjani i-RFID
Amasistimu e-RFID ayisibonelo esihle sokuthi ubuchwepheshe obusha bungashintsha kanjani isithombe semakethe, budale imikhiqizo emisha futhi buxazulule izinkinga ezimbalwa ngaphambilini ebezigcina abantu abaningi bengalali ebusuku. Ukuhlonzwa kwamafrikhwensi omsakazo, okungukuthi, izindlela zokuhlonza izinto kusetshenziswa amaza omsakazo, kuguqule izinto zesimanjemanje, izinhlelo zokulwa nobugebengu, ukulawulwa kokungena nokubalwa komsebenzi, izithuthi zomphakathi kanye nemitapo yolwazi.
Izinhlelo zokuqala zokuhlonza umsakazo zenzelwe izinjongo zezindiza zaseBrithani futhi zenza kwaba nokwenzeka ukuhlukanisa izindiza zesitha ezindizeni ezihlangene. Inguqulo yezohwebo yezinhlelo ze-RFID ingumphumela wemisebenzi eminingi yocwaningo namaphrojekthi esayensi aqhutshwa phakathi neminyaka eyishumi yama-70s. Zenziwe yizinkampani ezifana noRaytheon noFairchild. Imishini yokuqala yabantu abavamile esekelwe ku-RFID - izingidi zeminyango, evulwe ngokhiye okhethekile womsakazo, yavela cishe eminyakeni engama-30 edlule.
umgomo wokusebenza
Isistimu ye-RFID eyisisekelo iqukethe amasekhethi e-elekthronikhi amabili: isifundi esiqukethe ijeneretha yefrikhwensi ephezulu (RF), isekethe ezwakalayo enekhoyili nayo eyi-antenna, kanye ne-voltmeter ekhombisa i-voltage kusekethe ye-resonant (umtshina). Ingxenye yesibili yesistimu i-transponder, eyaziwa nangokuthi ithegi noma ithegi (Umfanekiso 1). Iqukethe i-resonant circuit eshuthelwe imvamisa yesiginali ye-RF. kumfundi naku-microprocessor, evala (icisha) noma evula isifunda esizwakalayo ngosizo lokushintsha K.
Ama-antenna okufunda kanye ne-transponder abekwe kude komunye nomunye, kodwa ukuze amakhoyili amabili axhumeke ngozibuthe komunye nomunye, ngamanye amazwi, inkambu edalwe ikhoyili yomfundi ifinyelela futhi ingene kukhoyili ye-transponder.
Inkambu kazibuthe ekhiqizwe uthi lomfundi idala amandla kagesi aphezulu. kukhoyili enamajika amaningi etholakala ku-transponder. Iphakela i-microprocessor, okuthi, ngemva kwesikhathi esifushane, edingekayo ekuqoqweni kwengxenye yamandla adingekayo emsebenzini, iqala ukuthumela ulwazi. Emjikelezweni wamabhithi alandelanayo, isifunda se-resonant yethegi ivaliwe noma ayivalwanga ngokushintsha K, okuholela ekwenyukeni kwesikhashana kokuncishiswa kwesignali ekhishwa i-antenna yomfundi. Lezi zinguquko zitholwa isistimu yomtshina efakwe kumfundi, futhi umphumela wokusakazwa kwedatha yedijithali enomthamo wamabhithi angamashumi ambalwa kuya kwamakhulu amaningana afundwa yikhompyutha. Ngamanye amazwi, ukudluliswa kwedatha kusuka kumaki kuya kumfundi kwenziwa ngokumodulating i-amplitude yasensimini edalwe ngumfundi ngenxa yokuncishiswa kwayo okukhulu noma okuncane, futhi isigqi sokushintshashintsha kwe-amplitude yenkundla sihlotshaniswa nekhodi yedijithali egcinwe kumemori ye-transponder. Ngaphezu kwekhodi yesibonakaliso eyingqayizivele neyingqayizivele ngokwayo, izingcezu ezingadingekile zengezwa esitimeleni esikhiqiziwe ukuze kuvunyelwe ukuthunyelwa okunephutha ukuthi kwenqatshwe noma izingcezu ezilahlekile ziphinde zitholakale, ngaleyo ndlela kuqinisekiswe ukufundeka.
Ukufunda kuyashesha, kuthatha ama-millisecond ambalwa, futhi ububanzi bohlobo olunjalo lwe-RFID luyidayamitha ye-antenna yomfundi oyedwa noma amabili.
Uzothola ukuqhubeka kwalesi sihloko kumagazini ka-December
Ukusebenzisa ubuchwepheshe be-RFID
