Zoyambira & Ntchito
NFC: Njira yachidule yolumikizirana opanda zingwe yopanda zingwe yomwe imalola kutumizirana ma data osalumikizana ndi malo-to-point pakati pa zida zamagetsi, kusinthanitsa deta pamtunda wa 10cm. Njira yolumikizirana ya NFC ili ndi magawo awiri odziyimira pawokha: owerenga NFC ndi tag ya NFC. Wowerenga NFC ndiye gawo logwira ntchito ladongosolo lomwe "amawerenga" (kapena kukonza) chidziwitsocho asanayambitse kuyankha kwina. Imapereka mphamvu ndikutumiza malamulo a NFC ku gawo lokhazikika la dongosolo (ie tag ya NFC). Nthawi zambiri, molumikizana ndi microcontroller, wowerenga NFC amapereka mphamvu ndikusinthana zambiri ndi zilembo za NFC imodzi kapena zingapo. Wowerenga wa NFC amathandizira ma protocol angapo a RF ndi mawonekedwe ake ndipo angagwiritsidwe ntchito m'njira zitatu zosiyanasiyana: kuwerenga / kulemba, peer-to-peer (P2P) ndi kutsanzira makhadi. Gulu logwira ntchito pafupipafupi la NFC ndi 13.56 MHz, lomwe ndi la pafupipafupi, ndipo miyezo ya protocol ndi ISO/IEC 14443A/B ndi ISO/IEC15693.
Zolemba za NFC zili ndi ntchito zosiyanasiyana, monga kulumikiza ndi kukonza zolakwika, zikwangwani zotsatsa, zotsutsana ndi zabodza, ndi zina.
1.Pairing & Debugging
Polemba zambiri monga dzina ndi mawu achinsinsi a WiFi ku lebulo la NFC kudzera pa owerenga NFC, ndikuyika chizindikirocho pamalo oyenera, kulumikizana kungathe kupangidwa mwa kungoyika zida ziwiri zolumikizidwa ndi NFC pafupi ndi mnzake. Kuphatikiza apo, NFC imatha kuyambitsa ma protocol ena monga Bluetooth, ZigBee. Kuphatikizika kumachitika pang'onopang'ono ndipo NFC imangogwira ntchito mukaifuna, kotero sipadzakhala kulumikizana kulikonse mwangozi ndipo sipadzakhala mikangano ya chipangizo ngati ndi Bluetooth. Kukhazikitsa zida zatsopano kapena kukulitsa netiweki yanu yakunyumba ndikosavuta, ndipo palibe chifukwa chosaka kulumikizana kapena kulowa mawu achinsinsi.
Analysis of Product Selection
Chip: Ndibwino kugwiritsa ntchito mndandanda wa NXP NTAG21x, NTAG213, NTAG215 ndi NTAG216. Mndandanda wa tchipisi umagwirizana ndi muyezo wa NFC Type 2 komanso umakwaniritsa muyezo wa ISO14443A.
Mlongoti:NFC imagwira ntchito pa 13.56MHz, pogwiritsa ntchito aluminium etching process coil antenna AL+PET+AL.
Guluu: Ngati chinthu chomwe chikuyenera kutsatidwa chiri chosalala komanso malo ogwiritsira ntchito ndi abwino, guluu wotentha wotsika mtengo kapena guluu wamadzi angagwiritsidwe ntchito. Ngati malo ogwiritsira ntchito ndi ovuta ndipo chinthu choyenera kutsatiridwa ndi chovuta, guluu wamafuta atha kugwiritsidwa ntchito kuti likhale lolimba.
Zapamwamba: Mapepala okutidwa angagwiritsidwe ntchito. Ngati kutetezedwa kwa madzi kumafunika, PET kapena PP zipangizo zingagwiritsidwe ntchito. Kusindikiza malemba ndi chitsanzo kungaperekedwe.
2. Kutsatsa & Zikwangwani
Zolemba zanzeru ndi imodzi mwamagwiritsidwe aukadaulo a NFC. Imawonjezera ma tag a NFC pazotsatsa zoyambira zamapepala kapena zikwangwani, kuti anthu akawona zotsatsa, athe kugwiritsa ntchito mafoni awo amafoni kuti ajambule ma tag ophatikizidwa kuti adziwe zambiri zotsatsa. M'munda wa zikwangwani, ukadaulo wa NFC ukhoza kuwonjezera kuyanjana kochulukirapo. Mwachitsanzo, chithunzi chomwe chili ndi chipangizo cha NFC chikhoza kulumikizidwa kuzinthu monga nyimbo, makanema, ngakhale masewera ochezera, potero amakopa anthu ambiri kuti azikhala patsogolo pa chithunzichi ndikuwonjezera chidwi chamtundu ndi kutsatsa. Ndi kutchuka kwa mafoni okhala ndi ntchito za NFC, zikwangwani zanzeru za NFC zimagwiritsidwanso ntchito m'magawo ambiri.
Zambiri mumtundu wa NDEF monga ma poster anzeru, mawu, ma URL, manambala oyimbira, mapulogalamu oyambira, zolumikizira mapu, ndi zina zotero. zitha kulembedwa mu lebulo la NFC pazida zolumikizidwa ndi NFC kuti muwerenge ndikufikira. Ndipo zolembedwazo zitha kubisidwa ndikutsekedwa kuti mupewe kusintha koyipa ndi mapulogalamu ena.
Analysis of Product Selection
Chip: Ndikofunikira kugwiritsa ntchito tchipisi ta NXP NTAG21x. Zomwe zaperekedwa ndi NTAG21x zidapangidwa kuti zithandizire kuphatikiza komanso kusavuta kwa ogwiritsa ntchito:
1) Kuchita kwa Fast Read kumalola kusanthula kwa mauthenga athunthu a NDEF pogwiritsa ntchito lamulo limodzi lokha la FAST_READ, potero kuchepetsa nthawi yowerengera m'malo opangira zida zambiri;
2) Kuchita bwino kwa RF, kupereka kusinthasintha kwakukulu mu mawonekedwe, kukula ndi kusankha zinthu;
3) 75 μm IC makulidwe njira imathandizira kupanga zilembo zoonda kwambiri kuti ziphatikizidwe mosavuta m'magazini kapena zikwangwani, ndi zina zambiri;
4）Ndi 144, 504 kapena 888 byte ya malo omwe alipo, ogwiritsa ntchito amatha kusankha malinga ndi zosowa zawo.
Mlongoti:NFC imagwira ntchito pa 13.56MHz, pogwiritsa ntchito aluminium etching process coil antenna AL+PET+AL.
Guluu:Chifukwa chakuti amagwiritsidwa ntchito pazikwangwani ndipo chinthu chomwe chiyenera kuikidwacho chimakhala chosalala, chotsika mtengo chosungunuka chosungunuka kapena guluu wamadzi.
Zapamwamba: pepala lojambula lingagwiritsidwe ntchito. Ngati kutetezedwa kwa madzi kumafunika, PET kapena PP zipangizo zingagwiritsidwe ntchito. Kusindikiza malemba ndi chitsanzo kungaperekedwe.
3. Kudana ndi chinyengo
NFC anti-counterfeiting tag ndi tag yamagetsi yotsutsana ndi zinthu zabodza, yomwe imagwiritsidwa ntchito makamaka kuzindikiritsa zowona zazinthu, kuteteza zomwe kampaniyo ili nazo, kuteteza zinthu zachinyengo kuti zisafalikire pamsika, ndikuteteza ufulu ndi zokonda za ogula. wa ogula.
Zolemba zamagetsi zotsutsana ndi zinthu zabodza zimayikidwa pamapaketi azinthu, ndipo ogula amatha kuzindikira chizindikiro chamagetsi chotsutsana ndi zinthu zabodza kudzera mu APP pa foni ya NFC, kuyang'ana chidziwitso chowona, ndikuwerenga zokhudzana ndi malonda. Mwachitsanzo: zambiri za opanga, tsiku lopangira, malo oyambira, zofotokozera, ndi zina zambiri, sungani zomwe zili pa tag ndikuwonetsetsa kuti chinthucho ndi chowonadi. Chimodzi mwazabwino zaukadaulo wa NFC ndikulumikizana kwake kosavuta: zilembo zing'onozing'ono za NFC zili pafupifupi mamilimita 10 m'lifupi ndipo zimatha kuyikidwa mosadziwika bwino m'mapaketi azinthu, zovala kapena mabotolo avinyo.
Analysis of Product Selection
1. Chip: Ndibwino kuti mugwiritse ntchito FM11NT021TT, yomwe ndi tag chip yopangidwa ndi Fudan Microelectronics yomwe imagwirizana ndi ISO/IEC14443-A protocol ndi NFC Forum Type2 Tag standard ndipo ili ndi ntchito yodziwikiratu. Itha kugwiritsidwa ntchito kwambiri m'magawo monga ma CD anzeru, zinthu zotsutsana ndi zinthu zabodza, komanso kupewa kuba.
Ponena za chitetezo cha chip tag cha NFC palokha:
1) Chip chilichonse chili ndi UID yodziyimira payokha 7, ndipo UID singalembedwenso.
2) Dera la CC lili ndi ntchito ya OTP ndipo silinagwetse misozi kuti mupewe kutsekula koyipa.
3) Malo osungira ali ndi ntchito yowerengera yokha.
4) Ili ndi ntchito yosungira yotetezedwa ndi mawu achinsinsi, ndipo kuchuluka kwa mawu achinsinsi omwe angasinthidwe.
Poyankha ma tag achinyengo omwe amabwezeretsanso ma tag ndikudzaza mabotolo enieni ndi vinyo wabodza, titha kupanga zilembo zosalimba za NFC ndi kapangidwe ka ma tag, bola katunduyo atatsegulidwa, chizindikirocho chimasweka ndipo sichingagwiritsidwenso ntchito! Ngati chizindikirocho chichotsedwa, chizindikirocho chidzaphwanyidwa ndipo sichingagwiritsidwe ntchito ngakhale chichotsedwa.
2. Mlongoti: NFC imagwira ntchito pa 13.56MHz ndipo imagwiritsa ntchito mlongoti wa koyilo. Pofuna kuti ikhale yosalimba, maziko a mapepala amagwiritsidwa ntchito ngati chonyamulira cha mlongoti ndi chip AL + Paper + AL.
3.Gulu: Gwiritsani ntchito zomatira zolemetsa kwambiri pamapepala apansi, ndi guluu wopepuka kuzinthu zakutsogolo. Mwanjira iyi, chizindikirocho chikachotsedwa, zinthu zakutsogolo ndi pepala lothandizira zidzalekanitsa ndikuwononga mlongoti, zomwe zimapangitsa kuti NFC ikhale yosagwira ntchito.
