Nkhani

Mlongoti wa RFID ndi gawo lofunika kwambiri kuti muzindikire ntchito yowerengera ya chipangizo cha RFID hardware.Kusiyana kwa mlongoti kumakhudza mwachindunji mtunda wowerengera, kusiyanasiyana, ndi zina zambiri, ndipo mlongoti ndi chinthu chofunikira chomwe chimakhudza kuchuluka kwa kuwerenga.Mlongoti waWowerenga RFIDakhoza kugawidwa makamaka mu liniya polarization ndi zozungulira polarization malinga ndi mphamvu mode.

Polarization ya mlongoti imatanthawuza lamulo loti mayendedwe a vector yamagetsi amasintha ndi nthawi mumayendedwe opitilira ma radiation a mlongoti.Machitidwe osiyanasiyana a RFID amagwiritsa ntchito njira zosiyanasiyana za antenna polarization.Ntchito zina zimatha kugwiritsa ntchito polarization ya mzere, mwachitsanzo, pamzere wophatikizira, malo amtundu wamagetsi amakhazikika, ndipo mlongoti wa tag yamagetsi amatha kugwiritsa ntchito polarization.Koma nthawi zambiri, popeza momwe chizindikiro chamagetsi sichikudziwika, makina ambiri a RFID amagwiritsa ntchito tinyanga tozungulira kuti tichepetse kukhudzidwa kwa makina a RFID kutengera tag yamagetsi.Malingana ndi mawonekedwe a trajectory, polarization ingagawidwe kukhala polarization yozungulira, polarization yozungulira ndi elliptical polarization, yomwe pakati pawo polarization ndi circular polarization imagwiritsidwa ntchito kwambiri.

RFID linearly polarized antenna

Mafunde amagetsi opangidwa ndi mlongoti wowerengera wa mlongoti wa polarized polarized ndi mzere, ndipo gawo lake lamagetsi lili ndi mayendedwe amphamvu, ndipo lili ndi izi:
1) Mphamvu za mawayilesi amatuluka mu mlongoti motsatira mzere;
2) Mtsinje wa mzerewu uli ndi gawo la unidirectional electromagnetic field, lomwe ndi lamphamvu kuposa mlongoti wozungulira polarized, koma mawonekedwe ake ndi ocheperapo komanso aatali;
3) Poyerekeza ndi mlongoti wozungulira polarized, mtunda wowerengera njira imodzi ndi wautali, koma chifukwa cha kuwongolera kwamphamvu, kuchuluka kwa kuwerenga kumakhala kocheperako;
4) Ma tag (Identification Objects) adasinthidwa kuti adziwe momwe angayendere

Pamene tag ya RFID ikufanana ndi mlongoti wa owerenga, mlongoti wa polarized polarized umakhala ndi kuwerengera bwinoko.Chifukwa chake, mlongoti wokhala ndi polarized nthawi zambiri umagwiritsidwa ntchito powerenga ma tag omwe mayendedwe ake amadziwika, monga ma pallet.Popeza mtengo wamagetsi amagetsi a mlongoti umakhala wocheperako mkati mwa kukula kwa ndege ya mlongoti wowerenga, mphamvu zake zimakhala zokhazikika ndipo zimatha kulowa mkati mwazinthu zolimba kwambiri.Chifukwa chake, ili ndi mphamvu zolowera bwino pazida zokhala ndi kachulukidwe kwambiri ndipo ndiyoyenera kuzindikiritsa zinthu zazikulu komanso zowoneka bwino kwambiri, mlongoti wa polarized polarized umapereka mwayi wokulirapo posinthana ndi kukhudzika kwa tag ndi kutalika kwa imodzi. - mtunda wowerengera.Chifukwa chake, mlongoti wa owerenga uyenera kukhala wofanana ndi ndege ya chizindikirocho poigwiritsa ntchito, kuti ukhale ndi kuwerenga kwabwino.

RFID Yozungulira Polarized Antenna

Ma electromagnetic field emission of the circularly polarized antenna ndi mtengo wa helical, womwe uli ndi izi:
1) Mphamvu ya Antenna RF imatulutsidwa ndi mlongoti wozungulira wa helical;
2) Mtengo wozungulira wa helical uli ndi gawo lamagetsi lamagetsi ambiri, ndipo gawo la gawo lamagetsi ndi lalikulu, koma mphamvu yake ndi yaying'ono kuposa ya mlongoti wa polarized;
3) Malo owerengera ndi otakata, koma poyerekeza ndi mzere wa polarization antenna, kukhudzika kwa chizindikiro cha njira imodzi kumakhala kochepa ndipo mtunda wowerengera ndi wamfupi;
4) Yogwiritsidwa ntchito kwa ma tag (zinthu zozindikiritsa) omwe njira yake yoyendera ndi yosadziwika.

Mtengo wozungulira wa electromagnetic wa antenna yozungulira polarized imatha kutumiza mbali zonse nthawi imodzi.Mukakumana ndi zopinga, mtengo wa electromagnetic wa mlongoti wozungulira polarized umakhala wosinthika kwambiri komanso wokhotakhota, zomwe zimawonjezera mwayi wowerengera kuti cholembera chilowe mu mlongoti kuchokera mbali zonse, kotero kuti zofunikira pakumamatira ndi njira yoyendera ndizololera;Komabe, kukula kwa mtengo wozungulira kumabweretsanso kuchepa kwamphamvu kwa mafunde a electromagnetic wave, kotero kuti chizindikirocho chimangosangalala ndi gawo la mphamvu yamagetsi yamagetsi mbali ina yake, ndipo mtunda wowerengera umafupikitsidwa.Chifukwa chake, mlongoti wozungulira wokhala ndi polarized ndi woyenera nthawi zomwe komwe tagi imayendera (chinthu chodziwika) sichidziwika, monga malo osungiramo katundu wa malo ogulitsa.

Malinga ndi mawonekedwe a ntchito ndi mankhwala, ShenzhenHandheld-Wirelessrfid zipangizo makamaka utenga liniya polarization ndi njira zozungulira polarization kuti akwaniritse zosowa za ntchito zosiyanasiyana, amene angagwiritsidwe ntchito kufufuza katundu, kufufuza katundu ndi ntchito zina, ndipo akhala ankagwiritsa ntchito mayendedwe, mankhwala chipatala, Mphamvu, ndalama, chitetezo cha anthu, maphunziro, msonkho, mayendedwe, zokopa alendo, ritelo, zochapira, zankhondo ndi mafakitale ena.