Zoyambira & Ntchito
Ukadaulo wa RFID ndiukadaulo wodzizindikiritsa wodziwikiratu wotengera ma siginoloji opanda zingwe ndipo ndioyenera kugwiritsa ntchito mawonekedwe osiyanasiyana. Ikulandira chidwi chochulukirapo m'malaibulale, zolemba ndi kasamalidwe ka zolemba zakale. Powonjezera RFID laibulale zolemba m'mabuku, zikalata ndi zolemba zakale, ntchito monga kuwerenga basi, kufunsa, kubweza ndi kubweza zitha kukwaniritsidwa, kupititsa patsogolo kayendetsedwe kabwino ka kayendetsedwe kake ndi kuchuluka kwa ntchito za mabuku.
Pali mitundu iwiri ikuluikulu yaMa tag a RFID a mabuku amagwiritsidwa ntchito m'malaibulale ndi kasamalidwe ka zolemba zakale, zolemba za RFID HF ndi RFID UHF zolemba. Zolemba ziwirizi zimakhala ndi mawonekedwe osiyanasiyana. Ndiroleni ndiwunikenso kusiyana kwawo pansipa:
Ukadaulo wa RFID ukhoza kugawidwa m'mitundu ingapo malinga ndi ma frequency osiyanasiyana ogwiritsira ntchito: ma frequency otsika (LF), ma frequency apamwamba (HF), Ultra high frequency (UHF) ndi microwave (MW). Mwa iwo, ma frequency apamwamba komanso ma frequency apamwamba kwambiri ndi mabuku awiri omwe amagwiritsidwa ntchito kwambiri paukadaulo wa RFID pakadali pano. Aliyense ali ndi ubwino ndi malire ake, ndipo ali ndi mphamvu zosiyana pazochitika zosiyanasiyana.
Mfundo yogwira ntchito: Ukadaulo wapafupipafupi wa RFID umagwiritsa ntchito mfundo yolumikizirana pafupi ndimunda, ndiye kuti, owerenga amatumiza mphamvu ndikusinthanitsa deta ndi tag kudzera mugawo la maginito. Ukadaulo wa UHF RFID umagwiritsa ntchito mfundo ya radiation yakutali yamagetsi, ndiye kuti, owerenga amatumiza mphamvu ndikusinthanitsa deta ndi tag kudzera mafunde amagetsi.
Kusanthula kwa kusankha kwazinthu
1. Chips:HF imalimbikitsa kugwiritsa ntchito chipangizo cha NXP ICODE SLIX, chomwe chimagwirizana ndi ndondomeko za ISO15693 ndi ISO/IEC 18000-3 Mode 1. Ili ndi kukumbukira kwakukulu kwa EPC ya 1024 bits, yomwe deta yake ikhoza kulembedwanso nthawi za 100,000 ndikusungidwa kwa zaka zoposa 10.
UHF imalimbikitsa kugwiritsa ntchito NXP UCODE 8, Alien Higgs 4, motsatira ndondomeko za ISO 18000-6C ndi EPC C1 Gen2, EPC. Ili ndi 128 bit user memory, 32.omwe deta yake ikhoza kulembedwanso nthawi 100,000 ndikusungidwa kwa zaka zoposa 10.
2. Tinyanga: Tinyanga za HF ndizowonda, zomwe zimachepetsa kusokoneza kwa ma tag angapo. Mafunde a electromagnetic amatha kusamutsa mphamvu ku ma tag omwe ali kumbuyo kwawo kudzera mu mlongoti. Ndioonda kwambiri m'mawonekedwe, otsika mtengo, ochita bwino kwambiri, komanso obisika kwambiri. Chifukwa chake, ma tag a library a 13.56mhz anzeru nfc RFID ndioyenera kuyang'anira mabuku ndi mabokosi osungira zakale. Komabe, pakuwongolera mafayilo atsamba limodzi, amagwiritsidwa ntchito makamaka pamafayilo achinsinsi kwambiri, monga zikalata zobisika kwambiri, mafayilo ofunikira a ogwira ntchito, zojambula zojambula, ndi zolemba zachinsinsi. Pali tsamba limodzi kapena ochepa m'magawo awa. Kugwiritsa ntchito zilembo za library ya 13.56mhz HF rfid zidzalumikizana kwambiri, kupangitsa kusokonezana, kusokoneza kulondola kwa kuzindikira, ndikulephera kukwaniritsa zofunikira zowongolera. Pankhaniyi, tikulimbikitsidwa kugwiritsa ntchito ma tagging a UHF.
3. Zapamwamba: Onse a HF ndi UHF amatha kugwiritsa ntchito pepala la zojambulajambula ngati zinthu zapamtunda, ndipo amatha kusindikiza zolemba, mapatani kapena ma barcode. Ngati simukufunika kusindikiza, mutha kugwiritsa ntchito inlay yonyowa mwachindunji.
4. Zomatira: Kagwiritsidwe ntchito ka ma tag nthawi zambiri amayikidwa pamapepala. Ndiosavuta kumamatira ndipo malo ogwiritsira ntchito si ovuta. Zomatira zotentha zotsika mtengo kapena zomatira zamadzi zimatha kugwiritsidwa ntchito.
5. Pepala lomasulidwa: Kawirikawiri, pepala lokhala ndi galasi lokhala ndi mafuta a silicone amagwiritsidwa ntchito, lomwe silimamatira ndipo limapangitsa kuti likhale losavuta kuchotsa chizindikirocho.
6. Kuwerenga: Ukadaulo wa HF RFID ndiukadaulo wolumikizira pafupi-munda, ndipo mawonekedwe ake ogwirira ntchito ndi ochepa, nthawi zambiri amakhala mkati mwa 10 centimita. Tekinoloje ya UHF RFID ndiukadaulo wakutali kwambiri wamagetsi. Mafunde a electromagnetic ali ndi gawo lina lolowera ndipo ntchito yake ndi yayikulu, nthawi zambiri yopitilira mita imodzi. Mtunda wowerengera wa HF ndi wocheperako, kotero imatha kupeza mabuku kapena mafayilo osungidwa bwino.
7. Kuthamanga kwa kuwerenga: Chifukwa cha kuchepa kwa mfundo yolumikizira pafupi-munda, ukadaulo wa HF RFID uli ndi liwiro lowerenga pang'onopang'ono ndipo ndizovuta kuwerenga ma tag angapo nthawi imodzi. Chifukwa chaubwino wa mfundo yamagetsi yamagetsi yakutali, ukadaulo wa UHF RFID uli ndi liwiro lowerenga komanso ntchito yowerengera gulu. Ukadaulo wa UHF umakhala ndi mtunda wautali wowerenga komanso kuthamanga kwambiri, motero umakhala wothandiza kwambiri pakuwerengera mabuku kapena mafayilo.
8. Kutha kusokoneza: Kulumikizana kwapafupi ndi munda kwaukadaulo wapafupipafupi wa RFID kumachepetsa kusokoneza komwe kungachitike popanda zingwe, kupangitsa ukadaulo wapafupipafupi kukhala "wotetezedwa" kwambiri ku phokoso lachilengedwe ndi kusokoneza kwamagetsi (EMI), kotero ili ndi mphamvu yotsutsa kusokoneza. UHF imagwiritsa ntchito mfundo yotulutsa ma elekitiromagineti, chifukwa chake imakhala yosavuta kusokonezedwa ndi ma elekitiroma. Panthawi imodzimodziyo, zitsulo zidzawonetsa zizindikiro ndipo madzi amatha kuyamwa zizindikiro. Zinthu izi zidzasokoneza ntchito yachibadwa ya UHF RFID chizindikiro. Ngakhale enaUHF passive RFID tag pambuyo poti luso laukadaulo likuchita bwino kwambiri popewa kusokonezedwa ndi zitsulo ndi zamadzimadzi, poyerekeza ndi zilembo zama frequency apamwamba, UHF ikadali yotsika pang'ono, ndipo njira zina ziyenera kugwiritsidwa ntchito kuti zithandizire.
9 . Anti-kuba: Kugwiritsa ntchitolaibulale ya RFID chitetezo zoletsa kubamolumikizana ndi ngalande zooneka ngati zitseko ndi machitidwe amatha kuteteza bwino mabuku ndi mafayilo kuti asatayike ndikugwiritsa ntchito ma alarm ochotsa osaloledwa.Mayankho a HF ndi UHF RFID aliyense ali ndi zabwino ndi zovuta zake, ndipo kusankha kuyenera kuyesedwa ndikuyerekeza kutengera zosowa ndi mikhalidwe.
