125kHz vs 13.56MHz: Izindleko Zokuqinisekisa Ukulawula Ukufinyelela

125kHz vs 13.56MHz: Izindleko Zokuqinisekisa Ukulawula Ukufinyelela

 

 

Imizuzwana eyishumi nanhlanu yokuhlanganisa i-keyfob engu-125kHz. Ithimba lezokuvikela le-ICT likuhlole lokhu ngo-2023 ngedivayisi ye-Amazon engu-$30{4}}ukuvula ukusebenza kwempinda, imizuzwana eyishumi nanhlanu. YaboUkuqhathaniswa kokuphepha kobuchwepheshe bekhadi le-ICTkufanelekile ukufunda uma ufuna indlela yokusebenza kanye nomongo obanzi wokufuduka.

 

Sibuzwa ngokukhetha imvamisa njalo e-Syntek. Abaphathi bokuthengwa kwempahla bafuna impendulo elula, futhi ayikho neyodwa. Imvamisa inquma i-physics. Ukukhethwa kwe-chip kunquma ukuphepha. Ikhwalithi yokukhiqiza inquma ukuthi izifakazelo zihlala iminyaka emihlanu noma ziyahluleka yini ngemva kwezinyanga eziyisithupha. Lezi izinqumo ezihlukene.

 

 

125kHz vs 13.56MHz izifakazelo zokufinyelela: umehluko ongokoqobo

 

Iphuzu Lesinqumo	125kHz LF Ukuqinisekisa	13.56MHz HF Ukuqinisekisa
Ama-chips okufinyelela ajwayelekile	EM4100, TK4100, T5577, HID Prox{3}}amafomethi ahambisanayo	I-MIFARE Classic, i-MIFARE Plus, i-DESFire EV2, i-DESFire EV3, i-NTAG yamakesi okusebenzisa i-NFC
Inzuzo enkulu	Izindleko zeyunithi ephansi, ukuziphatha okuzinzile kokufunda, ukuhambisana okubanzi kwefa	Inkumbulo eyengeziwe,{0}}ukuxhumana kwezindlela ezimbili, izinketho zokuqinisekisa eziqinile
Ingozi enkulu	Ama-ID amaningi-ama-ID chips awanakho ukubethela noma ukusabela{1}}kwenselele	Ukuvikeleka kuncike kumndeni we-chip kanye nokusethwa komfundi; Ukufunda kwe-CSN-kuphela akunamandla
Ukulingana okuhle kakhulu	Iminyango yengcuphe ephansi-, amachibi, indawo yokuzivocavoca, ukunakekelwa kwefa, imininingwane yesikhashana	Ukufinyelela kwezinkampani, amasistimu wamahhotela,-amakhadi ezicelo amaningi,{1}}izindawo zokuphepha eziphezulu
Ukuthenga iphutha okufanele uligweme	Ukusebenzisa-imininingwane ye-ID eseduze njengokulawula okuwukuphela kwendawo yokungena ebucayi	Ukuthenga ama-chips avikelekile kodwa ulungiselela abafundi ukuthi baqinisekise kuphela inombolo ye-serial yekhadi

 

Ukuze uthole umhlahlandlela ojulile wokukhetha imvamisa kuwo wonke amaphrojekthi we-keyfob ye-RFID, bheka isihloko sethu esithiukukhetha imvamisa elungile yama-keyfobs e-RFID. Ukuze uthole ukubuka konke kobuchwepheshe okungathathi hlangothi kokusondelana, i-MIFARE, nomehluko wekhadi le-DESFire, iUkusondela, i-MIFARE kanye ne-DESFire incazelo yobuchwepheshekuyasiza futhi.

 

Ku-125kHz, amagagasi kazibuthe kagesi ahlangana ngokungenisa phakathi kwe-keyfob antenna kanye nesifundi. Ukuhlanganisa okuzinzile. Amanzi awanciphisi kakhulu. Indawo yensimbi ayiwadali amaphethini okuphazamisa owabona kumaza aphezulu{4}}okungakho ukulawula ukufinyelela kwangaphambi kwesikhathi kufane kubuchwepheshe be-LF.

Sisathengisa ama-keyfobs we-EM4100. Eziningi zazo. Ukufinyelela kwephuli, ukuhlukaniswa kwendawo yangaphakathi, izifakazelo zesikhashana zikasonkontileka. Kunezimo zokusetshenziswa ezisemthethweni lapho umkhawulo wokuvikeleka wamukelekayo futhi inzuzo yezindleko ibalulekile-$0.15-0.30 ngeyunithi ngayinye ngevolumu uma kuqhathaniswa ne-$2.50+ yama-chips e-HF avikelekile. Uma iphrojekthi yakho idinga izindlu ezihlala isikhathi eside, ukuphrinta amalogo, izinombolo ze-serial, kanye nezinketho eziningi ze-chip ze-LF/HF, qala ngokuthiama-keyfobs we-ABS RFID ngokwezifiso zokulawula ukufinyelela.

 

Ngeke sizincome ekungeneni kwesakhiwo esiyinhloko. Ukuchayeka kwesikweletu akukufanele ukonga.

 

Ukuthuthela ku-13.56MHz akuzixazululi ngokuzenzakalelayo izinkinga zokuphepha.

 

I-13.56MHz iyibhendi yefrikhwensi, hhayi ibanga lokuphepha. I-MIFARE Classic, i-MIFARE Plus ku-Security Level 3, kanye ne-DESFire EV2/EV3 zonke zihlala emhlabeni we-HF, kodwa ziziphatha ngendlela ehluke kakhulu ohlelweni lomnyango. Isiqinisekiso-esibiza kancane esingu-13.56MHz esisetshenziswa kuphela i-UID noma i-CSN asiqhathanisi nohlelo lokusebenza lwe-DESFire olusebenzisa okhiye abahlukahlukene kanye nokufakazela ubuqiniso okubetheliwe.

 

I-MIFARE Classic bekuyindinganiso yemboni yeminyaka. I-ISO14443A ehambisanayo, inkumbulo engu-1KB noma engu-4KB, isekelwa kabanzi. Ukubethela kwe-Crypto1 kubukeke kwenele. Abacwaningi baseNyuvesi yase-Radboud bayiphule ngo-2008-ubuthakathaka obuyisisekelo be-cryptographic, akukho ukulungiswa kwe-firmware okungenzeka. Ifoni ye-Android ene-MIFARE Classic Tool ingahlanganisa lezi mininingwane manje.

 

Sithumela{0}}ama-keyfobs ahambisanayo ajwayelekile ukuze kulungiswe ifa. Uma isakhiwo sakho sinabafundi abangu-50 abasebenzisa i-MIFARE Classic futhi kungekho bhajethi yokuthuthukisa, ukuthenga ama-keyfobs amasha ajwayelekile kunengqondo. Ukuyishintsha nge-DESFire ngeke kusize uma abafundi bengakwazi ukwenza ukuqinisekiswa okubethelwe noma kunjalo.

Izinketho ezivikelekile ze-HF: I-MIFARE Plus kumodi ye-SL3 ene-AES enikwe amandla, i-DESFire EV2, i-DESFire EV3. Zonke zisebenzisa i-AES-128. I-DESFire EV2 ne-EV3 iphethe isitifiketi se-EAL5+ sokuphakelwa okuzwelayo. Idatha ye-NXPIshidi ledatha yomkhiqizo we-MIFARE DESFire EV3futhi ibhala ukuthobela kwe-ISO/IEC 14443A, usekelo lwe-cryptographic hardware, ukuphathwa kwezinhlelo zokusebenza ezivumelana nezimo, kanye nesitifiketi Semibandela Ejwayelekile EAL5+.

 

I-keyfob ye-DESFire kusistimu engalungiselelwe kahle ayinikezi ukuvikeleka okungaphezu kwe-EM4100. Ithimba le-Flipper Zero libhale lokhu ekuhlaziyweni kwephrothokholi ye-RFID ka-2023: izinhlelo eziningi zokulawula ukufinyelela ziqinisekisa kusetshenziswa inombolo ye-Card Serial kuphela, ngisho noma kufakwe abafundi be-DESFire. I-CSN ayibetheliwe, ifundeka inoma iyiphi idivayisi ye-NFC. I-keyfob engu-$4 ye-DESFire efakazela ubuqiniso nge-CSN isebenza ku-$0.20 LF amazinga okuphepha.

 

Sicela amaklayenti aqinisekise ukucushwa komfundi ngaphambi kokucaphuna. "Ingabe isistimu yakho ifakazela ubuqiniso kusetshenziswa idatha yomkhakha obethelwe, noma i-CSN nje?" Uma bengazi, sibatshela ukuthi bathole ngaphambi kokuthi basebenzise imali ekuthengeni izincwadi ze-premium. Umhlahlandlela wethu wokuUkuphepha kwedatha ye-RFID yokuqinisekisa ukufinyelelaichaza ukuthi kungani ama-ID alungisiwe, izimpendulo ezidlalekayo, okhiye abazenzakalelayo, nokuqinisekiswa kwe-backend okubuthakathaka kungabukela phansi imininingwane ebizayo.

Uma ihadiwe yakho ekhona ingakwazi ukusekela indlela yokuqinisekisa ohlela ukuyithenga, ukuthuthukiswa kokuqinisekisa kuzohluleka emnyango. Uma kunjalo, buyekeza i-Ukucushwa kokulawula kokufinyelela kwe-RFIDngaphambi kokugunyaza ukukhiqizwa kwenqwaba.

 

Isakhiwo sezindleko seziqinisekiso ze-RFID{0}}asihambisani nevolumu ngobudlova.

 

Intengo yeyunithi iyingxenye eyodwa kuphela yezindleko zokuqinisekisa. Isabelomali sangempela sihlanganisa ibanga le-chip, okokusebenza kwegobolondo, ukuphrinta, i-UID noma umbhalo wekhodi womkhakha, ukuhlolwa kwesampula, ukufaniswa kwedatha, ukupakisha, ukuphatha amaphutha, kanye nevolumu yokukhishwa kabusha kwesikhathi esizayo. Umthengi oqhathanisa kuphela "intengo engu-125kHz" kanye "nentengo engu-13.56MHz" angase akhethe into eshibhe kakhulu futhi akhokhe kamuva ngokufundwa okuhlulekile,{4}}umsebenzi wokubhala ngekhodi, ukushintshwa komfundi, noma amathikithi osekelo.

 

Uhlobo lwe-Chip	100 amayunithi	1,000 amayunithi	5,{1}} amayunithi
EM4100/TK4100 (125kHz)	$0.80-1.50	$0.25-0.40	$0.15-0.25
I-T5577 ibhaleka kabusha (125kHz)	$1.20-2.00	$0.45-0.70	$0.30-0.50
I-MIFARE Classic 1K (13.56MHz)	$1.00-2.00	$0.40-0.80	$0.30-0.60
I-DESFire EV2 (13.56MHz)	$4.00-6.00	$2.50-3.50	$2.00-3.00
I-DESFire EV3 (13.56MHz)	$5.00-8.00	$3.00-4.50	$2.50-3.50

 

Umphathi wendawo o-oda ama-keyfobs angu-200 ukhokha cishe izikhathi ezi-3 ngaphezulu ngeyunithi ngayinye kunoku-oda okukodwa okungu-2,000. Ama-opharetha{4}amasayithi amaningi ahlanganisa ukuthenga kuzo zonke izakhiwo. Izinhlangano ezinemijikelezo yokushintsha ebikezelwe zi-oda amavolumu wonyaka kusengaphambili.

 

I-T5577 inesikhundla esiyingqayizivele. Ngokungafani nama-chip-e-UID angaguquki, inkambu yayo-ehlelekayo ngamabhithi angu-330 ememori elungisekayo{5}ingakwazi ukulingisa i-EM4100, i-HID Prox, i-Indala, ezinye izimiso ezimbalwa. Izinsiza ezilawula amasistimu amafa avela kubathengisi abaningi, izihlanganisi ezidinga-ukulungiswa kabusha kwesayithi: I-T5577 inikeza ukuguquguquka okubonisa inkokhelo encane ngaphezu kwe-EM4100. Ukuvikelwa kwephasiwedi ye-32-bit akuqinile ngezindinganiso zesimanje, kodwa kumisa ukuhlanganisa okuvamile.

 

Izindleko ezifihliwe abathengi bavame ukuphuthelwa

 

Izindleko	Kungani Kubalulekile?	Indlela Yokulawula
Ukufaka ikhodi kanye nezinombolo	Ikhodi yendawo engalungile, ifomethi yebhithi engalungile, noma idatha yomkhakha engalungile ingenza amakhadi afundeke kodwa angasetshenziswa.	Qinisekisa ifomethi ye-Wiegand, ibanga lenombolo yekhadi, ikhodi yesayithi, nefayela lombhalo wekhodi ngaphambi kokukhiqiza.
Ukuhlolwa kwesampula	Amamodeli okufunda, izilawuli zeminyango, nezinguqulo zesofthiwe zingaziphatha ngendlela ehlukile nge-chip efanayo.	Hlola amasampuli angu-5-10 eminyango yangempela ngaphambi kokugunyazwa kwe-oda lenqwaba.
Ukushintsha umfundi	Ukuvikela imininingwane ye-HF kungase kudinge abafundi abasha uma izingxenyekazi zekhompuyutha ezindala zisekela kuphela ama-ID agxilile e-LF.	Hlola izifundi ezifakiwe ngaphambi kokunquma phakathi-nemvamisa eyodwa,{1}}ezikabili, noma{2}}zokuthutha kobuchwepheshe obuningi.
Izinga lokwehluleka	Iqoqo elishibhile elinokushunwa kwe-antenna okubuthakathaka noma izindlu ezingezinhle zingadala izindleko zokusekela eziningi kunokonga.	Cela ukuhlolwa kwe-antenna, imininingwane yempahla, namarekhodi okuthembeka kwemvelo.
Ukukhishwa kabusha okuzayo	Lonke ikhadi elilahlekile, isiqashi esisha, isisebenzi esisha, noma ibheji lenkontileka liphinda izindleko zokuqinisekisa.	Sebenzisa ukuhlela umthamo wonyaka futhi ugweme amaphrimiyamu-emvamisa ephindwe kabili angapheli ngaphandle uma kudingeka.

 

Ikhwalithi yokukhiqiza yilapho ama-keyfobs ashibhile ehluleka khona.

Ikhwalithi yaleyo ferrite, ukunemba okusongayo, ukuvumelana kwe-capacitor yokushuna{0}}lokhu kunquma ukuthi ingabe i-keyfob ifunda ngokuthembekile kuwo wonke amamodeli omfundi ahlukene.

 

Ku-13.56MHz, i-antenna ngokuvamile ifakwe ithusi ku-PCB substrate. Ukubekezelelana kokukhiqiza okuqinile, kodwa imvamisa ye-resonant izwela kakhulu ezintweni zemvelo. khweza i-keyfob ye-HF ngokumelene ne-keychain yensimbi, ama-antenna detunes, ibanga lokufunda lehla ngo-30-50%. Abakhiqizi bekhwalithi banxephezela ekwakhiweni kwe-antenna futhi baqinisekise ngokuhlolwa kwe-VNA ngesikhathi sokukhiqiza.

 

Sibone amaqoqwana avela-kubahlinzeki bezindleko eziphansi abanamazinga okukhubazeka angaphezu kuka-8%. Ngaphansi kuka-$0.10 ngeyunithi ngayinye, lokho akukhona ukulondoloza-izindleko zosekelo ezidluliselwa kuklayenti.

 

Indawo ebiyelwe ibalulekile. Ipulasitiki ye-ABS iyindinganiso yezimboni: ukumelana nomthelela, ukuqina kwamakhemikhali, ukubonakala kwe-RF. Izinhlanganisela ze-PP ezishibhile ziyaqhekeka esimweni sezulu esibandayo. Sibe namaklayenti asenyakatho ye-Europe athola lokhu ngenkathi amazinga okushisa kaDisemba eqala izimangalo zewaranti kuwo wonke amaphothifoliyo awo.

 

Ekufakweni kwangaphandle: IP65 iphatha imvula nothuli, i-IP68 ilinganiselwe ukucwiliswa emanzini. Umehluko wezindleko ngu-$0.15-0.25 ngeyunithi ngayinye. Ukweqa lokho kuthuthukiswa nokufaka izifakazelo ezonakaliswe amanzi kubiza ngaphezulu.

 

Ingabe ukuthuthukisa ukusuka ku-125kHz ukuya ku-13.56MHz kukhokha nini?

 

Icala lebhizinisi lokuthuthukiswa kusuka ku-LF yefa ukuze kuvikeleke i-HF kuncike kakhulu kumongo. Icala eliqine kakhulu livela lapho izifakazelo zivikela-izindawo zenani eliphezulu, lapho imikhondo yokuhlolwa ibalulekile, lapho izifakazelo ezihlanganisiwe zizodala ukuchayeka kwezomthetho, noma lapho ikhadi elifanayo kulindeleke ukuthi lisekele izicelo eziningi ezifana nokufinyelela kwesakhiwo, ukupaka, amakheshi, amalokha, ukuthengisa, noma inani lobulungu.

 

Lawa maphrojekthi angahluleka nawo. Sibone ukuthuthukiswa okubiza ngaphezu kwalokho obekucatshangwa, kuthathe isikhathi eside kunalokho ebesihleliwe, okudingayo ukushintshwa kwabafundi ngaphandle kobubanzi bangempela. I-ROI incike esimweni esithile: ingqalasizinda ekhona, indawo esongelayo, izinga lokushintshwa, ikhwalithi yokuphathwa kwephrojekthi.

 

Umehluko wezindleko phakathi kweziqinisekiso ezivikelekile nezingavikelekile wehle kakhulu. I-DESFire EV2 ebiza u-$8-10 iyinye ngo-2019 manje isingu-$2.50-3.50 ngevolumu.

 

Ama-keyfobs-emvamisa emibili ashumeka kokubili izinti eziyi-125kHz kanye ne-13.56MHz. Siyawakhiqiza. Asiwakhuthazi amaklayenti ekuwacaciseni ngaphandle uma kunohlelo olucacile loshintsho.

 

Ama-antenna amabili asondelene asondelene, ahlukanise womabili. Izidingo zokuhlukaniswa ngokomzimba zengeza inqwaba. I-antenna ngayinye kufanele ithuthukiswe ngokuzimela, ukuyekethisa kwenye kuthinte enye. Ubunkimbinkimbi bokukhiqiza bukhuphula amazinga amaphutha. I-premium engu-40-60% ngaphezu kwefrikhwensi eyodwa ngokuvamile iletha ukusebenza okubucayi kuzo zombili iziza.

Emabhilidini-aqashayo amaningi anamasistimu ahlukene ezitezi ezihlukene, izifakazelo ezihlukene ngokuvamile zisebenza kakhulu. Inhle kancane, isebenza kangcono, ibiza kancane ngokuhamba kwesikhathi.

 

Uhlelo lokufuduka oluhlanzekile lwe-LF-ukuya-ku-HF luvamise ukulawulwa yingcuphe. Thuthukisa amagumbi amaseva, amahhovisi ezezimali, izindawo zokugcina izimpahla, nezindawo zokungena ezinkulu kuqala. Gcina iminyango yengcuphe ephansi-ekusondeleni kwefa kuze kube yilapho kuhlelwa ukushintshwa komfundi. Ngesikhathi soshintsho, khipha{6}}iziqinisekiso zobuchwepheshe ezimbili kuphela kubasebenzisi abawadinga womabili amasistimu. Uma umfundi wokugcina we-LF esethathe umhlalaphansi, yeka ukuthenga izifakazelo-ezikabili futhi uye kokuqinisekisa okukodwa okuvikelekile kwe-HF.

 

Imininingwane yokucaciswa ebalulekile, ngokusekelwe ekuhlulekeni kokuthunyelwa esikubonile:

 

 

Ngokusetshenziswa okusha lapho ukuphepha kubaluleke khona: DESFIRE EV2 at 13.56MHz. I-EV3 yengeza intuthuko encane emananini entengo ekhokhwayo{4}okunzima ukukuthethelela ngaphandle kukahulumeni noma{5}}ukuvikelwa kwenani eliphezulu. Qinisekisa ukuqinisekiswa komkhakha obethelwe, hhayi i-CSN-kuphela. Ibhajethi engu-$2.50-4.00 ngokhiye ngamunye ngevolumu.

 

Ngokulungiswa kwe-LF yefa lapho ukuthuthukiswa kungenzeki khona: EM4100 noma i-TK4100 yokuhambisana okuthembekile ngezindleko ezincane. Yamukela umkhawulo wokuvikela ngokuqaphela. Udinga{4}}ekuhlelweni kabusha kwesayithi? Khokha i-premium encane ye-T5577.

 

Okwezinguquko: -izifundi eziningi zobuchwepheshe kunama-keyfobs{1}}emvamisa amabili. I-premium yokufunda iyisikhathi esisodwa-; i-keyfob premium ibuya ngazo zonke izifakazelo ezikhishiwe.

 

Ungacacisi ngaphezulu-. Sicaphune amaphrojekthi acela i-DESFire EV3 enenkumbulo engu-8KB yamasistimu obulungu bejimu-$4+ ngokhiye ngamunye ngamakhono abangasoze bawasebenzisa. I-DESFire EV2 ene-2KB ku-$2.50 iletha ukusebenza okufanayo kwalolo hlelo lokusebenza.

 

Ungacacisi ngaphansi-kanye. Indawo yokungena ebhilidini eyisisekelo enemininingwane ye-EM4100 yisinqumo sezokuphepha, kungakhathaliseki ukuthi senziwe unembeza noma cha. Uma othile enza i-keyfob futhi athole ukufinyelela, umbuzo othi "kungani besisebenzisa ubuchwepheshe obuhlanganiswe kancane?" izokhuphuka.

 

Ukukhetha imvamisa akuyona inkimbinkimbi uma uhlukanisa izinqumo: i-physics kwezokuphepha kusukela kukhwalithi yokukhiqiza. Ukudideka okuningi kuvela ekukhangiseni okubahlanganisayo, noma ukuthenga okugxile ezindlekweni zeyunithi ngaphandle kokucabangela izindleko eziphelele zobunikazi. Uma ithimba lakho lisaqhathanisa imininingwane ye-IC ne-ID ezingeni eliyisisekelo, lo mhlahlandlela ukuzeIkhadi le-IC uma liqhathaniswa nokukhethwa kwekhadi le-ID lokulawula ukufinyelelakungasiza ukumisa amagama ngaphambi kokuthenga.

 

I-FAQ: 125kHz vs 13.56MHz ukuqinisekisa kokulawula ukufinyelela

 

Usebenza ngesinqumo sokusatshalaliswa? Singathanda ukukusiza ucacise kusengaphambili ngendlela efanele kunokususa iphutha lesistimu engafaniswa kamuva.

Intengo ibonisa izilinganiso ze-wholesale zikaJanuwari 2025, ziyahlukahluka ngevolumu nezidingo zombhalo wekhodi. Ukuze uthole izingcaphuno zephrojekthi, thintana nokudayiswa ngezidingo zevolumu kanye nemininingwane yengqalasizinda.