Phakathi kweetekhnoloji zonxibelelwano ezingenazingcingo, kuphela ubudlelwane phakathi kwesixhobo esingenazingcingo kunye ne-eriyali yenkqubo ye-RFID lolona lukhethekileyo. Kusapho lwe-RFID, i-eriyali kunye ne-RFID ngamalungu abaluleke ngokulinganayo. I-RFID kunye nee-eriyali zixhomekeke enye kwaye azinakwahlulwa. Nokuba ngumfundi we-RFID okanye ithegi ye-RFID, nokuba bubuchwephesha be-RFID obuqhelekileyo okanye iteknoloji ye-RFID ye-ultra-high-frequency, ayinakwahlulwai-eriyali.
I-RFIDi-eriyalisisiguquli esiguqula amaza akhokelwayo asasazeke kumgca wothumelo abe ngamaza ombane asasazeke kwindawo engasikelwanga mda (ngokuqhelekileyo indawo ekhululekileyo), okanye ngokuphendululekileyo. I-eriyali licandelo lezixhobo zikanomathotholo ezisetyenziselwa ukusasaza okanye ukufumana amaza ombane. Isixhobo sombane esiphuma kwirediyo yesidluliseli sithuthwa sisiwe kwi-eriyali nge-feeder (intambo), kwaye isasazwe yi-eriyali ngendlela yamaza ombane wombane. Emva kokuba i-electromagnetic wave ifikelele kwindawo yokufumana, ifunyanwa yi-eriyali (kuphela inxalenye encinci yamandla efunyenweyo) kwaye ithunyelwe kumamkeli werediyo nge-feeder, njengoko kubonisiwe kulo mfanekiso ungezantsi.
Umgaqo wokusasaza amaza e-electromagnetic avela kwii-eriyali zeRFID
Xa ucingo luphethe umsinga otshintshayo, luya kukhupha amaza e-electromagnetic, kwaye isakhono sawo sokusasazeka kwemitha sinxulumene nobude kunye nokumila kocingo. Ukuba umgama phakathi kweengcingo ezimbini usondele kakhulu, intsimi yombane iboshwe phakathi kweengcingo ezimbini, ngoko ke i-radiation ibuthathaka kakhulu; xa iingcingo ezimbini zisasazwa ngaphandle, indawo yombane isasazeka kwindawo ejikelezileyo, ngoko ke i-radiation iphuculwe. Xa ubude bocingo buncinci kakhulu kunobude be-wavelength ye-radiated electromagnetic wave, i-radiation ibuthathaka kakhulu; xa ubude bocingo buthelekiswa nobude be-radiated electromagnetic wave, i-current on the wire inyuka kakhulu, yenze i-radiation enamandla. Olu cingo lukhankanywe ngasentla olunokuvelisa i-radiation ebalulekileyo ludla ngokuba yi-oscillator, kwaye i-oscillator yi-eriyali elula.
Okukhona ubude bamaza ombane wombane, kokukhona bukhulu ubungakanani be-eriyali. Amandla amaninzi afuna ukusasazeka, ubukhulu be-eriyali inkulu.
Ulwalathiso lwe-eriyali ye-RFID
Amaza ombane asasazwa yi-eriyali aya kwicala. Kwisiphelo sothumelo se-eriyali, ukuqondisa kubhekiselele kubuchule be-eriyali bokukhupha amaza ombane kwicala elithile. Kwisiphelo sokufumana, kuthetha ukukwazi kwe-eriyali ukufumana amaza ombane ukusuka kumacala ahlukeneyo. Igrafu yomsebenzi phakathi kweempawu zemitha ye-eriyali kunye nolungelelwaniso lwesithuba yipateni ye-eriyali. Ukuhlalutya ipateni ye-eriyali kunokuhlalutya iimpawu zemitha ye-eriyali, oko kukuthi, ukukwazi kwe-eriyali yokuhambisa (okanye ukufumana) amaza ombane wombane kuwo onke amacala esithubeni. I-Directivity ye-eriyali idla ngokumelwa ngamagophe kwinqwelomoya ethe nkqo kunye nenqwelomoya ethe tyaba emele amandla amaza ombane asasazwe (okanye amkelwe) kumacala ahlukeneyo.
Ngokwenza utshintsho oluhambelanayo nolwakhiwo lwangaphakathi lwe-antenna, ulwalathiso lwe-antenna lunokutshintshwa, ngaloo ndlela lwenza iintlobo ezahlukeneyo zee-eriyali ezineempawu ezahlukeneyo.
Ukuzuza kwe-eriyali ye-RFID
Ukuzuza kwe-eriyali ngokobungakanani kuchaza inqanaba apho i-eriyali ikhupha amandla okufakwayo ngendlela egxininisiweyo. Ukususela kumbono wepatheni, i-lobe encinci encinci, encinci i-lobe yecala, kwaye iphezulu inzuzo. Kubunjineli, inzuzo ye-eriyali isetyenziselwa ukulinganisa amandla e-eriyali ukuthumela nokufumana imiqondiso kwicala elithile. Ukwandisa inzuzo kunokunyusa ukugubungela uthungelwano kwicala elithile, okanye ukunyusa umlinganiselo wokufumana phakathi koluhlu oluthile. Phantsi kweemeko ezifanayo, okukhona inzuzo iphezulu, kokukhona i-radio wave isanda.
Ukuhlelwa kwee-eriyali ze-RFID
I-antenna ye-Dipole: Ikwabizwa ngokuba yi-eriyali ye-dipole ye-symmetrical, iqulethe iingcingo ezimbini ezithe tye ezinobukhulu obufanayo kunye nobude obucwangciswe ngendlela ethe ngqo. Umqondiso wondliwa ukusuka kwiindawo ezimbini zokugqibela phakathi, kwaye usasazo oluthile lwangoku luya kuveliswa kwiingalo ezimbini ze-dipole. Olu lwabiwo lwangoku luya kuvuyisa intsimi ye-electromagnetic kwisithuba esijikeleze i-eriyali.
I-eriyali yekhoyili: Yenye yezona zinto zisetyenziswa kakhulu kwiinkqubo zeRFID. Ngokuqhelekileyo zenziwa ngeengcingo ezifakwe kwisetyhula okanye kwizakhiwo ezixande ukuze zikwazi ukufumana kunye nokuhambisa imiqondiso ye-electromagnetic.
I-eriyali ye-RF edityaniswe ngokufanelekileyo: I-eriyali ye-Inductively edityanisiweyo idla ngokusetyenziselwa unxibelelwano phakathi kwabafundi be-RFID kunye neethegi zeRFID. Batshata ngemagnethi ekwabelwana ngayo. Ezi eriyali zihlala zikwimilo ejikelezayo ukwenza umhlaba wemagnethi ekwabelwana ngawo phakathi komfundi weRFID kunye nethegi yeRFID.
I-antenna ye-Microstrip patch: Ngokuqhelekileyo ngumaleko obhityileyo wentsimbi edityaniswe kwinqwelomoya. I-antenna ye-Microstrip patch ilula ngobunzima, incinci ngobukhulu, kwaye incinci kwicandelo. I-feeder kunye nenethiwekhi ehambelanayo inokuveliswa ngexesha elifanayo ne-eriyali, kwaye inxulumene ngokusondeleyo kwinkqubo yonxibelelwano. Iisekethe eziprintiweyo zihlanganiswe kunye, kwaye iipatches zingenziwa ngokusebenzisa iinkqubo ze-photolithography, ezingabizi kakhulu kwaye zilula ukuvelisa ngobuninzi.
I-eriyali yeYagi: yi-eriyali eyalathayo equka i-dipoles zamaza amabini okanye ngaphezulu. Zihlala zisetyenziselwa ukomeleza amandla omqondiso okanye ukuqhuba unxibelelwano olungenazingcingo.
I-eriyali ene-Cavity-backed: Yi-eriyali apho i-eriyali kunye nesondlo zibekwe kumngxuma ongasemva ofanayo. Ngokuqhelekileyo zisetyenziswa kwiinkqubo ze-RFID eziphezulu kwaye zinokubonelela ngomgangatho olungileyo kunye nozinzo.
I-eriyali yomgca weMicrostrip: Yi-eriyali encinci kwaye ibhityile, idla ngokusetyenziswa kwizixhobo ezincinci ezifana nezixhobo eziphathwayo kunye neethegi zeRFID. Zakhiwe ukusuka kwimigca ye-microstrip enika ukusebenza kakuhle kwisayizi encinci.
I-Antenna eSpiral: I-eriyali ekwaziyo ukufumana kunye nokuhambisa amaza ombane ombane ajikelezayo. Ngokuqhelekileyo zenziwe ngocingo lwentsimbi okanye i-sheet metal kwaye zinesakhiwo esinye okanye ezininzi ezimile njenge-spiral.
Kukho iintlobo ezininzi zee-eriyali ezinokusetyenziswa kwiimeko ezahlukeneyo ezinje ngeefrikhwensi ezahlukeneyo, iinjongo ezahlukeneyo, amaxesha ahlukeneyo kunye neemfuno ezahlukeneyo. Uhlobo ngalunye lwe-antenna luneempawu zalo ezizodwa kunye neemeko ezisebenzayo. Xa ukhetha i-eriyali ye-RFID efanelekileyo, kufuneka ukhethe ngokusekelwe kwiimfuno zesicelo kunye neemeko zokusingqongileyo.
Ukuze ufunde ngakumbi ngee-eriyali, nceda undwendwele:
Ifowuni: 0086-028-82695327
Ixesha lokuposa: May-15-2024
