125kHz vs 13.56MHz: Mtengo Wotsimikizira Kuwongolera

125kHz vs 13.56MHz: Mtengo Wotsimikizira Kuwongolera

 

 

Masekondi khumi ndi asanu kuti mutengere kiyibodi ya 125kHz. Gulu lachitetezo la ICT lidayesa izi mu 2023 ndi chipangizo cha Amazon cha $30{4}}chosasinthika kuti chizigwiranso ntchito masekondi khumi ndi asanu. ZawoKuyerekeza chitetezo chaukadaulo wa ICT CardNdikoyenera kuwerengera ngati mukufuna njira ndi kusamuka kwakukulu.

 

Timafunsidwa za kusankha pafupipafupi pafupipafupi ku Syntek. Oyang'anira zogula amafuna yankho losavuta, ndipo palibe. Frequency imatsimikizira physics. Kusankhidwa kwa chip kumatsimikizira chitetezo. Ubwino wopanga umatsimikizira ngati zidziwitso zimatha zaka zisanu kapena kulephera pakatha miyezi isanu ndi umodzi. Izi ndi zosankha zosiyana.

 

 

125kHz vs 13.56MHz zovomerezeka zofikira: kusiyana kothandiza

 

Mfundo yosankha	125kHz LF Chidziwitso	13.56MHz HF Chidziwitso
tchipisi chofikira	EM4100, TK4100, T5577, HID Prox-mawonekedwe ogwirizana	MIFARE Classic, MIFARE Plus, DESFire EV2, DESFire EV3, NTAG pamilandu yogwiritsira ntchito NFC
Ubwino waukulu	Mtengo wotsika wagawo, machitidwe owerengeka okhazikika, kufananirana ndi mbiri yakale	Kukumbukira kochulukira,-kulumikizana kwanjira ziwiri, njira zotsimikizika zamphamvu
Chiwopsezo chachikulu	Zambiri zokhazikika-Zomwe zilibe ma ID zilibe kubisa kapena zovuta-zoyankha	Chitetezo chimadalira chip banja ndi owerenga khwekhwe; CSN-kuwerenga kokha ndikofooka
Zokwanira bwino	Zitseko zowopsa-zochepa, malo osambira, malo ochitira masewera olimbitsa thupi, kukonza zakale, zotsimikizira kwakanthawi	Kufikira kwamakampani, makina amahotelo,-makadi ofunsira angapo, madera achitetezo apamwamba-
Kugula cholakwika kupewa	Kugwiritsa ntchito-zidziwitso zakuyandikira kwa ID ngati njira yokhayo yowongolera polowera movutikira	Kugula tchipisi zotetezedwa koma kukonza owerenga kuti atsimikizire nambala ya serial ya khadi

 

Kuti mupeze chiwongolero chozama chosankha pafupipafupi pama projekiti a RFID keyfob, onani nkhani yathukusankha ma frequency olondola a RFID keyfobs. Pakuwunika kwaukadaulo wosalowerera ndale za kuyandikira, MIFARE, ndi kusiyana kwamakhadi a DESFire, theKuyandikira, MIFARE ndi DESFire mafotokozedwe aukadauloimathandizanso.

 

Pa 125kHz, mafunde amagetsi amalumikizana molumikizana pakati pa keyfob antenna ndi owerenga. Kulumikizana kokhazikika. Madzi samatsika kwambiri. Pamwamba pazitsulo sizimapanga zosokoneza zomwe mumawona pamafuriji apamwamba-chifukwa chake kuwongolera kofikira msanga kumakhazikika paukadaulo wa LF.

Timagulitsabe ma keyfobs a EM4100. Ambiri a iwo. Kufikira padziwe, kulekanitsa madera amkati, zidziwitso zanthawi yochepa za kontrakitala. Pali zochitika zovomerezeka zogwiritsira ntchito zomwe malire ake ali ovomerezeka ndipo phindu la mtengo ndilofunika-$0.15-0.30 pagawo lililonse pa voliyumu ndi $2.50+ pazitsulo zotetezedwa za HF. Ngati polojekiti yanu ikufunika nyumba zolimba, kusindikiza ma logo, manambala a serial, ndi zosankha zingapo za LF/HF chip, yambani ndimakonda makiyi a ABS RFID owongolera mwayi.

 

Sitingawalimbikitse kuti alowe m'nyumba zoyambira. Kuwonekera kwa ngongole sikuyenera kusungidwa.

 

Kusamukira ku 13.56MHz sikungothetsa mavuto achitetezo.

 

13.56MHz ndi frequency band, osati kalasi yachitetezo. MIFARE Classic, MIFARE Plus mu Security Level 3, ndi DESFire EV2/EV3 onse amakhala m'dziko la HF, koma amachita mosiyana kwambiri pazitseko. Chidziwitso chotsika-chotsika mtengo cha 13.56MHz chogwiritsidwa ntchito ndi UID kapena CSN chokha sichingafanane ndi pulogalamu ya DESFire yogwiritsa ntchito makiyi osiyanasiyana ndikutsimikizirana mwachinsinsi.

 

MIFARE Classic inali muyezo wamakampani kwazaka zambiri. ISO14443A yogwirizana, 1KB kapena 4KB kukumbukira, imathandizidwa kwambiri. Kubisa kwa Crypto1 kumawoneka kokwanira. Ofufuza ku yunivesite ya Radboud adaphwanya mu 2008-maziko a cryptographic kufooka, palibe firmware yotheka. Foni ya Android yokhala ndi MIFARE Classic Tool imatha kufananiza izi tsopano.

 

Timatumiza{0}}makiyibodi ogwirizana kuti akonzeretu zakale. Ngati nyumba yanu ili ndi owerenga 50 omwe akuyendetsa MIFARE Classic ndipo mulibe ndalama zowonjezera, kugula ma keyfobs atsopano a Classic ndikomveka. Kuwasintha ndi DESFire sikungathandize ngati owerenga sangathe kutsimikizira zobisika.

Zosankha zotetezedwa za HF: MIFARE Plus mu SL3 mode yokhala ndi AES yothandizidwa, DESFire EV2, DESFire EV3. Zonse zigwiritseni ntchito AES-128. DESFire EV2 ndi EV3 amakhala ndi satifiketi ya EAL5+ kuti atumizidwe movutikira. Zithunzi za NXPMIFARE DESFire EV3 data data sheetimalembanso kuti ISO/IEC 14443A kutsatira, hardware cryptographic support, flexible application management, ndi Common Criteria EAL5+ certification.

 

Keyfob ya DESFire pamakina osasinthidwa bwino imapereka chitetezo china kuposa EM4100. Gulu la Flipper Zero lidalemba izi pakuwunika kwawo kwa protocol ya 2023 RFID: makina ambiri owongolera amatsimikizira kugwiritsa ntchito Card Serial Number yokha, ngakhale owerenga a DESFire adayikidwa. CSN sinabisike, imawerengedwa ndi chipangizo chilichonse cha NFC. A $4 DESFire keyfob yotsimikizira kudzera pa CSN imagwira ntchito pa $0.20 LF milingo yachitetezo.

 

Timapempha makasitomala kuti atsimikizire kasinthidwe ka owerenga asanatchule. "Kodi makina anu amatsimikizira pogwiritsa ntchito deta yosungidwa, kapena CSN yokha?" Ngati sakudziwa, timawauza kuti adziwe asanagwiritse ntchito ndalama paziphaso zamtengo wapatali. Mtsogoleri wathu kuChitetezo cha data cha RFID kuti mupeze zidziwitsolimafotokoza chifukwa chake ma ID okhazikika, mayankho obwezerezedwanso, makiyi osakhazikika, ndi kutsimikizira kofooka kumbuyo kungawononge mbiri yodula.

Ngati zida zanu zomwe zilipo sizingagwirizane ndi njira yotsimikizira yomwe mukufuna kugula, kukweza kovomerezeka kudzalephera pakhomo. Zikatero, bwerezaninsoRFID access control reader kasinthidwemusanavomereze kupanga zochuluka.

 

Kapangidwe ka RFID kamatsimikizira ndi zachiwawa-zosagwirizana ndi kuchuluka kwake.

 

Mtengo wa unit ndi gawo limodzi lokha la mtengo wovomerezeka. Bajeti yeniyeni imaphatikizapo chip grade, chipolopolo, kusindikiza, UID kapena encoding ya gawo, kuyesa zitsanzo, kufananitsa deta, kulongedza, kugwiritsira ntchito zolakwika, ndi kutulutsanso kwamtsogolo. Wogula poyerekeza "mtengo wa 125kHz" ndi "mtengo wa 13.56MHz" akhoza kusankha chinthu chotsika mtengo kwambiri ndi kulipirirabe pambuyo pake chifukwa chosawerengeka, kuyambiranso-ntchito yosindikiza, kusintha owerenga, kapena matikiti othandizira.

 

Chip Type	100 mayunitsi	1,000 mayunitsi	5,000+ mayunitsi
EM4100/TK4100 (125kHz)	$0.80-1.50	$0.25-0.40	$0.15-0.25
T5577 yolembedwanso (125kHz)	$1.20-2.00	$0.45-0.70	$0.30-0.50
MIFARE Classic 1K (13.56MHz)	$1.00-2.00	$0.40-0.80	$0.30-0.60
DESFire EV2 (13.56MHz)	$4.00-6.00	$2.50-3.50	$2.00-3.00
DESFire EV3 (13.56MHz)	$5.00-8.00	$3.00-4.50	$2.50-3.50

 

Woyang'anira katundu akuyitanitsa ma keyfobs 200 amalipira pafupifupi 3x zambiri pagawo lililonse kuposa kuyitanitsa 2,000. Ambiri-ogwiritsa ntchito mawebusayiti amaphatikiza zogulira zinthu zosiyanasiyana. Mabungwe omwe ali ndi masinthidwe olosera amayitanitsa ma voliyumu apachaka patsogolo.

 

T5577 ili ndi malo apadera. Mosiyana ndi tchipisi zokhazikika-za UID, ndi gawo-lokonzeka ndi ma 330 bits of configurable memory-angatsanzire EM4100, HID Prox, Indala, ma protocol ena angapo. Zothandizira zoyang'anira zotengera zakale kuchokera kwa mavenda angapo, ophatikiza omwe akufunika-kukonzanso malo: T5577 imapereka kusinthasintha komwe kumapangitsa kuti mtengo wake ukhale wocheperako kuposa EM4100. Kutetezedwa kwa mawu achinsinsi a 32-bit sikuli kolimba malinga ndi miyezo yamakono, koma kumayimitsa ma cloning wamba.

 

Zobisika mtengo ogula nthawi zambiri amaphonya

 

Mtengo	Chifukwa Chake Kuli Kofunika?	Mmene Mungalamulire
Encoding ndi manambala	Khodi yolakwika, mawonekedwe olakwika, kapena deta yolakwika yagawo ingapangitse makhadi kukhala owerengeka koma osagwiritsidwa ntchito.	Tsimikizirani mtundu wa Wiegand, kuchuluka kwa nambala yamakhadi, nambala yatsamba, ndi fayilo ya encoding musanapange.
Kuyesa zitsanzo	Mitundu ya owerenga, zowongolera zitseko, ndi mitundu ya mapulogalamu amatha kuchita mosiyana ndi chip chomwecho.	Yesani zitsanzo 5-10 pazitseko zenizeni musanavomereze kuyitanitsa kochuluka.
Kusintha kwa owerenga	Zidziwitso zotetezedwa za HF zingafunike owerenga atsopano ngati zida zakale zimathandizira ma ID okhazikika a LF.	Onani owerenga omwe adayikapo musanasankhe-ma frequency, dual-kawirikawiri, kapena{2}}kuchuluka{2}}kusamuka kwaukadaulo.
Mtengo wolephera	Gulu lotsika mtengo lokhala ndi kachulukidwe ka mlongoti kofooka kapena nyumba yosanja bwino zitha kupangitsa mtengo wothandizila kuposa kupulumutsa.	Funsani kuyezetsa kwa mlongoti, zakuthupi, ndi mbiri yodalirika ya chilengedwe.
Kutulutsanso kwamtsogolo	Khadi iliyonse yotayika, wobwereka watsopano, wantchito watsopano, kapena baji ya kontrakitala amabwereza mtengo wotsimikizira.	Gwiritsani ntchito kukonza ma voliyumu apachaka ndikupewa zolipiritsa-zambiri zapawiri pokhapokha ngati pakufunika kutero.

 

Kupanga kwabwino ndi komwe ma keyfobs otsika mtengo amalephera.

Ubwino wa ferriteyo, kutsetsereka kokhotakhota, kusasinthasintha kwa makina osinthika{0}}izi zimatsimikizira ngati keyfob imawerengedwa modalirika pamamodelo osiyanasiyana owerenga.

 

Pa 13.56MHz, mlongoti nthawi zambiri umakhazikika mkuwa pagawo la PCB. Kulekerera kolimba kopanga, koma ma frequency a resonant amakhudzidwa kwambiri ndi zinthu zachilengedwe. Kwezani keyfob ya HF motsutsana ndi keychain yachitsulo, ma antenna detunes, werengani madontho 30-50%. Opanga apamwamba amalipira kamangidwe ka mlongoti ndikutsimikizira ndi kuyesa kwa VNA panthawi yopanga.

 

Tawona magulu ochokera kwa ogulitsa{0}}otsika mtengo omwe ali ndi vuto lopitilira 8%. Kutsika ndi $0.10 pa unit imodzi, sikumeneko sikupulumutsa-ndi ndalama zothandizira zomwe zimatumizidwa kwa kasitomala.

 

Enclosure ndiyofunika. Pulasitiki ya ABS ndi muyezo wamakampani: kukana kwamphamvu, kukhazikika kwamankhwala, kuwonekera kwa RF. Zotsika mtengo za PP zimasokoneza nyengo yozizira. Tidakhala ndi makasitomala kumpoto kwa Europe omwe adazindikira izi pomwe kutentha kwa Disembala kudayambitsa mawaranti awo ponseponse.

 

Pakuyika panja: IP65 imagwira mvula ndi fumbi, IP68 idavotera kumizidwa. Mtengo wake ndi $0.15-0.25 pagawo lililonse. Kudumpha kukweza kumeneku ndikusintha zidziwitso zowonongeka ndi madzi kumawononga ndalama zambiri.

 

Kodi kukweza kuchokera ku 125kHz kupita ku 13.56MHz kumalipira liti?

 

Mlandu wabizinesi wokwezedwa kuchokera ku cholowa cha LF kuti uteteze HF zimatengera kwambiri zomwe zikuchitika. Mlandu wamphamvu kwambiri umapezeka pamene zizindikiro zimateteza-zigawo zamtengo wapatali, pamene kufufuza kuli kofunika, pamene zizindikiro zachinyengo zingapangitse kuti anthu adziwike ndi malamulo, kapena pamene khadi lomwelo likuyembekezeka kuthandizira ntchito zingapo monga mwayi womanga nyumba, malo oimika magalimoto, ma elevator, maloko, mavenda, kapena mtengo wa umembala.

 

Mapulojekitiwa nawonso akhoza kulephera. Tawona zokweza zomwe zimawononga ndalama zambiri kuposa momwe tinkaganizira, zomwe zidatenga nthawi yayitali kuposa momwe tidakonzera, zomwe zimafunikira kuti owerenga alowe m'malo mwazosiyana ndi momwe zidalili poyamba. ROI imatengera momwe zinthu ziliri: zomanga zomwe zilipo, malo owopseza, kuchuluka kwa kusintha, kasamalidwe ka polojekiti.

 

Kusiyana kwamitengo pakati pa zitsimikiziro zotetezedwa ndi zosatetezeka zatsika kwambiri. DESFire EV2 yomwe idawononga $8-10 iliyonse mu 2019 tsopano ndi $2.50-3.50 pa voliyumu.

 

Dual-makiyi afupipafupi amaika onse 125kHz ndi 13.56MHz tinyanga. Timawapanga. Sitilimbikitsa makasitomala kuti asawatchule pokhapokha ngati pali ndondomeko yomveka bwino yosinthira.

 

Tinyanga ziwiri zoyandikana zikulumikizana wina ndi mzake, kutulutsa zonse ziwiri. Zofunikira zopatukana mwakuthupi zimawonjezera zambiri. Mlongoti uliwonse uyenera kukhala wokongoletsedwa paokha, kunyengerera mu umodzi kumakhudza mzake. Kupanga zovuta kumawonjezera kuchuluka kwa zolakwika. The 40-60% premium kuposa single-frequency nthawi zambiri imapereka magwiridwe antchito movutikira pama frequency onse awiri.

Kwa nyumba zambiri-zochita lendi zokhala ndi makina osiyanasiyana ansanjika zosiyanasiyana, zikalata zosiyana nthawi zambiri zimakhala zothandiza. Zocheperako zokongola, zimagwira ntchito bwino, zimawononga ndalama zochepa pakapita nthawi.

 

Dongosolo loyeretsa la LF-mpaka{1}}Mapulani osamukira ku HF nthawi zambiri amakhala ndi chiwopsezo. Konzani zipinda za seva, maofesi azachuma, malo osungiramo katundu, ndi zipata zazikulu zolowera. Khalani ochepera-zitseko zachiwopsezo zokhudzana ndi mbiri yakale mpaka owerenga akonzedwa. Panthawi yakusintha, perekani umboni wapawiri-katswiri waukadaulo kwa ogwiritsa ntchito okhawo omwe amafunikira makina onse awiriwo. Wowerenga womaliza wa LF akapuma pantchito, siyani kugula -zotsimikizira za ma frequency ndi kupita ku mbiri yotetezedwa ya HF.

 

Tsatanetsatane wofunikira, kutengera kulephera kwa kutumiza komwe tawona:

 

 

Pakutumizidwa kwatsopano komwe kuli kofunikira: DESFire EV2 pa 13.56MHz. EV3 imawonjezera kuwongolera kwapang'onopang'ono pamitengo yamtengo wapatali{{4}zovuta kupereka zifukwa zakunja kwa boma kapena kutetezedwa-kwamtengo wapamwamba. Tsimikizirani kutsimikizika kwa magawo, osati CSN-pokha. Bajeti $2.50-4.00 pa keyfob pa voliyumu.

 

Pakukonza kwa LF komwe kwakhalako komwe sikungatheke: EM4100 kapena TK4100 kuti igwirizane modalirika pamtengo wotsika. Landirani malire achitetezo mwachidwi. Mukufuna -kupanganso mapulogalamu atsamba? Lipirani ndalama zochepa za T5577.

 

Zosintha: zambiri-zowerenga zaukadaulo m'malo mowirikiza-makiyi afupipafupi. Malipiro owerengera ndi nthawi-imodzi; keyfob premium imabweranso ndi mbiri iliyonse yoperekedwa.

 

Osachulutsa-nenani. Tatchulapo mapulojekiti opempha DESFire EV3 yokhala ndi 8KB memory ya makina ochitira masewera olimbitsa thupi-$4+ pa keyfob iliyonse kuti azitha kuzigwiritsa ntchito. DESFire EV2 yokhala ndi 2KB pa $2.50 imapereka magwiridwe antchito ofanana ndi pulogalamuyi.

 

Musatchulenso-tchulani. Polowera nyumba yoyambira yokhala ndi zidziwitso za EM4100 ndi chisankho chachitetezo, kaya mwachidziwitso kapena ayi. Ngati wina apanga kiyibodi ndikupeza mwayi, funso loti "n'chifukwa chiyani tinkagwiritsa ntchito ukadaulo wopangidwa pang'ono?" adzafika.

 

Kusankha pafupipafupi sikovuta mukangolekanitsa zisankho: fiziki ndi chitetezo ku mtundu wopanga. Chisokonezo chochuluka chimachokera ku malonda omwe amawasokoneza, kapena kugula kumayang'ana pa mtengo wa unit popanda kuganizira mtengo wonse wa umwini. Ngati gulu lanu likufananiza zidziwitso za IC ndi ID pamlingo woyambira, bukhuliIC khadi vs kusankha kwa ID khadi kuti muwongolere mwayizingathandize kukhazikika mawu asanagule.

 

FAQ: 125kHz vs 13.56MHz zowongolera zolowera

 

Kugwira ntchito popanga chisankho? Titha kukuthandizani kuti mutchule bwino patsogolo kusiyana ndi kukonza zolakwika pakanthawi kochepa.

Mitengo imawonetsa mitengo ya Januware 2025, imasiyanasiyana malinga ndi kuchuluka kwa ma encoding. Pamatchulidwe a projekiti, funsani zogulitsa ndi kuchuluka kwazomwe mukufuna komanso zambiri za zomangamanga.