Malingaliro a NFC
Dzina lonse la NFC ndi Near Field Communication, njira zazifupi zolumikizirana opanda zingwe. NFC ndiukadaulo wopanda zingwe woyambitsidwa ndi Philips ndikulimbikitsidwa ndi Nokia, Sony ndi opanga ena otchuka. NFC imapangidwa pamaziko aukadaulo wosalumikizana ndi ma radio frequency identification (RFID) kuphatikiza ukadaulo wolumikizira opanda zingwe. Ukadaulo uwu poyamba ndi kuphatikiza kophweka kwaRFID lusondi ukadaulo wapaintaneti, tsopano wasintha kukhala ukadaulo waufupi wolumikizira opanda zingwe, ndipo kachitidwe kake kakukula ndi kofulumira.
Malingaliro a RFID
RFID ndiye chidule cha Radio Frequency Identification, yomwe imadziwikanso kuti tag yamagetsi, yomwe ndiukadaulo wodziwikiratu. Imazindikiritsa chandamale chandamale kudzera mu ma siginecha a wailesi ndikuwerenga ndikulemba zofunikira popanda kukhudzana ndi makina kapena kuwala ndi chandamale. Sizikufuna kulowererapo pamanja, zitha kugwiritsidwa ntchito m'malo ovuta osiyanasiyana, zimatha kuzindikira zinthu zothamanga kwambiri, zimatha kuzindikira ma tag angapo nthawi imodzi, ndipo ntchitoyi ndi yofulumira komanso yabwino.
Kusiyana pakati pa NFC ndi RFID
Mafupipafupi osiyanasiyana
Mafupipafupi ogwiritsira ntchito RFID ndi ambiri. Nthawi zambiri amagwiritsidwa ntchito ndi 125KHZ ndi 133KHZ (ma frequency otsika), 13.56MHZ (ma frequency apamwamba), 900MHZ (ma frequency apamwamba kwambiri ), 433MHZ, 2.4G, 5.8GMHZ (ma frequency a microwave). Kuphatikiza apo, UHF 900M ndi mawu wamba, osati enieni. Kubwerezabwereza kumasiyananso m'mayiko osiyanasiyana. Mwachitsanzo, European frequency band (865.6MHZ-867.6MHZ), Singapore (920MHz~925MHz), China (920.5MHZ-924.5MHZ kapena 840.5MHZ-844.5MHZ), United States (902M-928M), Brazil (902M-928M), Brazil (902M-928M), Brazil (902MHZ-924.5MHZ). 907.5M kapena 915M-928M), etc.
Maulendo ogwiritsira ntchito a NFC ndi 13.56MHZ okha. Titha kumvetsetsa NFC ngati kagawo kakang'ono kaukadaulo wa RFID, yomwe imagwiritsa ntchito bandi ya 13.56MHz ndi gulu lafupipafupi la HF RFID. Kugwiritsa ntchito pafupipafupi uku ndikotchuka kwambiri, ndipo kumaphatikizapo ma protocol osiyanasiyana. Koma 13.56MHZ sizitanthauza kuti zonse ndizofanana ndi NFC.
Kutalikirana kosiyanasiyana
Chifukwa RFID imakhala ndi nthawi yayikulu yogwiritsira ntchito, mtunda wotumizira pama frequency osiyanasiyana ndi wosiyananso. Yaifupiyo ndi ma centimita angapo, ndipo yayitali imatha kufika mamita angapo kapena makumi a mamita.
NFC ndiukadaulo wolumikizirana mtunda waufupi. Monga momwe dzinalo likusonyezera, njira yotumizira ndi yochepa, nthawi zambiri mkati mwa 20cm, kotero kuti kulankhulana kukhale kotetezeka. Izi makamaka chifukwa cha luso lapadera lochepetsera ma siginecha lomwe limatengedwa ndi NFC, lomwe lili ndi mawonekedwe amtunda waufupi, bandwidth yayikulu komanso kugwiritsa ntchito mphamvu zochepa.
Different Communication Technology
Njira yonse yolumikizirana ya RFID imakhala ndiMa tag a RFID , tinyanga ndi owerenga RFID, zonse zomwe ndizofunikira. Dongosololi liyenera kuwerengedwa ndikuweruza chidziwitso cha tag unidirectionally kudzera mwa owerenga.
NFC imaphatikiza owerenga, makadi osalumikizana ndi ma point-to-point kukhala chip chimodzi, ndipo mafoni awiri a m'manja kapena zida zovala zokhala ndi chiwongolero cha NFC chokhazikika zimatha kuzindikira kulumikizana kwa chidziwitso pafupi. Kusiyanitsa kwaukadaulo wolumikizirana ndiko kusiyana kwakukulu pakati pa ziwirizi. NFC ndi njira yolumikizirana mwachinsinsi patali.
Kusiyana kumeneku kumapangitsanso kusiyana kwa ntchito zawo. Kutengera momwe mungagwiritsire ntchito, zitha kuwoneka kuti pali kusiyana koonekeratu pakati pa RFID ndi NFC. RFID ndiyomwe imayang'ana pa chinthu, pomwe NFC ndiyokhazikika pakugwiritsa ntchito ndipo imafuna kutengapo gawo kwa ogwiritsa ntchito kuti akwaniritse ntchito. RFID imazindikira kuwerenga ndi kuweruza kwa zidziwitso, pomwe ukadaulo wa NFC umagogomezera kulumikizana kwachidziwitso ndi kusinthasintha komanso kuwirikiza kawiri.
Muzogwiritsa ntchito, RFID imatha kuthandiza owerenga kuwerenga zambiriRFID zizindikiro nthawi yomweyo, zomwe zimakhala zofala kwambiri m'malo osungiramo zinthu. RFID nthawi zambiri imagwiritsidwa ntchito poyang'anira zinthu, kugulitsa, kuyendetsa ndege, zamankhwala, kasamalidwe kazinthu. Makhadi a ID a m'badwo wachiwiri ndi matikiti a Olimpiki a Beijing onse adamangidwaRFID chips, ndipo makina otolera misonkho a ETC osayimitsa panjira amagwiritsanso ntchito ukadaulo wa RFID.
NFC nthawi zambiri imakhala imodzi ndi imodzi, ndipo mitundu yotumizira ya NFC imakhala yaying'ono kwambiri kuposa ya RFID. Chifukwa chake, NFC imatenga gawo lalikulu pakuwongolera mwayi wopezeka, mayendedwe apagulu, komanso kulipira mafoni.
M'malo mwake, mawonekedwe akugwiritsa ntchito kwa RFID ndiambiri kuposa NFC, ndipo tinganene kuti RFID ili ndi NFC. Komabe, chifukwa cha kusiyana kwa magwiridwe antchito pakati pa RFID ndi NFC, awiriwa sapanga mgwirizano, koma amatenga gawo pazosintha zawo. Ziribe kanthu teknoloji yomwe ikugwiritsidwa ntchito, vuto lalikulu nthawi zambiri limakhala kuganizira momwe mungasinthire luso la wogwiritsa ntchito ndikubweretsa kumasuka kwenikweni kwa ogwiritsa ntchito.
Nthawi yotumiza: Feb-16-2023