Ta yaya Tags RFID ke Sadarwa da Masu Karatu?

 

Takaddun shaida suna gudana akan makamashin RF da aka girbe. Mai karatu yana watsa ci gaba da igiyar ruwa a 902{4}}928 MHz a Arewacin Amurka, 865-868 MHz a Turai. Eriyar alamar tana ɗaukar ɗan juzu'in wannan ƙarfin-isa don gudanar da guntu wanda ke zana kila 15-20 microwatts. Guntu tana daidaita rashin lafiyar eriya don nuna siginar baya tare da rufaffiyar bayanai. Wannan shi ne backscatter.

Daniel Dobkin ya rufe lissafin lissafin kuɗin haɗin yanar gizo a cikin "RF a cikin RFID" a baya a cikin 2007. Littafin har yanzu shine mafi yawan masu haɗawa ke amfani da su. Kewayon karatun UHF mai wucewa ya kai sama da mita 10-15 a sararin samaniya. Abubuwan turawa na gaske suna ganin ƙasa kaɗan.

Tag{0}zuwa{1} sadarwar mai karatu yana amfani da ko dai FM0 ko Miller a kan mai ɗaukar hoto. Mai karatu -zuwa{5}} yana amfani da PIE. Ƙididdigar Gen2 daga GS1 EPCglobal yana bayyana duk abin da ke cikin iska. Sigar 2 ta ƙara wasu fasalulluka na tsaro waɗanda kusan babu wanda ke amfani da su saboda guntuwar sun fi tsada.

 

 

Matsalolin Mitar

 

FCC Sashe na 15 yana ba da RFID 902{7}}928 MHz a har zuwa 4 watts EIRP tare da tsalle-tsalle. ETSI yana iyakance Turai zuwa 865.6-867.6 MHz a 2 watts ERP. Hanyoyin auna wutar lantarki daban-daban ma-EIRP da ERP-wanda ke rikitar da mutane kwatanta bayanai dalla-dalla a cikin yankuna.

Kasar Sin ta bude 920{3}}925 MHz. Japan tana ba da damar 916{4}}921 MHz amma tare da buƙatun saurare-kafin magana waɗanda ke dagula ƙirar mai karatu. Alamar da aka gina don kasuwar Amurka tana aiki a Turai amma kunna eriya ta kashe. Kuna rasa dB guda biyu. Wannan yana da mahimmanci lokacin da kun riga kun kasance a ƙarshen kasafin kuɗin haɗin yanar gizo.

 

13.56 MHz ya bambanta

 

HF RFID a 13.56 MHz yana amfani da haɗakarwa ta inductive, ba radiation ba. Kusa - fili kawai. Mai karatu yana da coil, tag yana da nada, filin maganadisu yana haɗa su a cikin watakila mita. Tambarin yana lodawa da sauke coil ɗinsa don daidaita siginar da mai karatu ya gani akan eriya. ISO 14443 don katunan kusanci, ISO 15693 don katunan kusanci. Ka'idoji daban-daban, nau'ikan karatu daban-daban, lokuta daban-daban na amfani.

NFC shine ainihin 14443 tare da wasu takwarorinsu -zuwa{2}} yanayin tsara. Wayarka tana yin NFC. Alamar ofishin ku mai yiwuwa 14443 ko iCLASS ko DESFire, ya dogara da lokacin da kamfanin ku ya shigar da tsarin.

LF a 125-134 kHz ra'ayi iri ɗaya ne amma ko da guntuwar kewayo . 10 centimeters watakila. Har yanzu ana amfani da alamun dabba saboda ƙananan mitoci suna shiga nama.

 

 

karo

 

Alamomi da yawa suna amsawa lokaci guda ana sarrafa su tare da Slotted ALOHA a cikin Gen2. Tags suna ɗaukar ramummuka bazuwar. Mai karatu yana daidaita siga Q don girman firam. Yana aiki da kyau don ƙira amma kayan sarrafawa yana raguwa da sauri lokacin da kuke da ɗaruruwan alamun a cikin filin kuma rabinsu suna da mugun nufi.

Jami'ar Auburn ta buga bayanan ƙimar karantawa wanda ke nuna alamun1000+ a sakan daya ƙarƙashin ingantattun yanayi. Ba wanda yake ganin haka a cikin sito.

Anti{0}}Bincike na karo gabaɗayan yanki ne. Wani bincike a cikin Cibiyoyin Sadarwar Kwamfuta daga 2024 da aka lissafa sama da algorithms 50. Itace -tushen, bambance-bambancen ALOHA, hanyoyin haɗin kai. Yawancin aikin ilimi baya ƙididdige ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan duniya kamar tsadar karatu da daidaituwar ƙa'ida.

 

Walmart

 

Walmart ya fara ba da umarnin RFID akan tufafi a cikin 2020. An faɗaɗa zuwa ƙarin nau'ikan a cikin 2022. Zuwa faɗuwar 2024 wa'adin ya rufe kayan daki, kayan dabbobi, sassan mota, tarin wasu kaya. Auburn's RFID Lab yana rike da takaddun shaida. Masu ba da takaddun shaida ba za su iya aikawa zuwa Walmart ba.

Dokokin sun sa farashin inlay ya ragu. Ƙarƙashin - centi huɗu a yanzu cikin girma. A 'yan shekarun da suka wuce ya kasance bakwai, takwas.

"An tabbatar da ROI," abin da Walmart ke faɗi a taro. Masu fafatawa suna biye. Target yana da nasa shirin. Amazon yana amfani da RFID a wasu cibiyoyi masu cikawa amma ba a fili ba.

 

Hanyoyin gazawa

 

UHF baya aiki da kyau a kusa da karfe ko ruwa. Fakitin kayan gwangwani yana da wuyar karantawa. Wuraren ajiya tare da tarawar ƙarfe suna haifar da tsangwama ta hanyoyi da yawa. A kan - ƙirar alama ta ƙarfe tana wanzu-kumfa sarari tsakanin guntu da saman ƙarfe{5}amma sun fi tsada, sau uku zuwa biyar daidai gwargwado.

Tags mutu. Auburn ya sami 2{4}} 3% DOA ko ƙimar gazawar farko a cikin bincike ɗaya. Chips sun fashe, haɗin eriya sun karye, mannen inlay ya gaza. Shirye-shiryen tallace-tallace masu girma suna gina wannan cikin ƙirar farashin su. Ƙananan masu amfani suna mamakin.

 

 

FASTAg

 

Indiya ta tura sama da alamun iska miliyan 60 na UHF don tara kuɗin lantarki tsakanin 2019 da 2023. Tags daga dillalai da yawa, masu karatu daga dillalai da yawa, haɗin gwiwar haɗin gwiwa a tsakanin masu aiki da yawa. Ya fi aiki. Ana aiwatar da hanyar layi. Gudanar da kuɗi ya ragu.

Kasar Sin ta kasance a hankali kan cinikin RFID fiye da yadda mutane suka yi hasashen shekaru goma da suka gabata. Hukunce-hukuncen gwamnati a cikin kantin magani da taba. Binciken dabaru a wasu sassa. Amma ba -salo abu - matakin fitar da ya kamata ya faru ba.