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 iyancipha, incinci 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 isandi sikanomathotholo sisasaza ngakumbi.
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 zangempela zesicelo kunye neemeko zokusingqongileyo.
Ukuze ufunde ngakumbi ngee-eriyali, nceda undwendwele:
Ifowuni: 0086-028-82695327
Ixesha lokuposa: May-15-2024
