Kodi Ma Tag a RFID Angawerengedwe Mpaka Pati?

 

Passive tag amagwira ntchito patali. Ma tag omwe amagwira ntchito amagwira ntchito motalikirapo. Manambala enieni amadalira zida, ma frequency, ndi zomwe zili pakati pa tagi ndi owerenga.

 

Yankho likufunika tsopano chifukwa Qualcomm idati chaka chatha idzayika owerenga a UHF RFID mu tchipisi tamafoni. Zebra adatumiza foni yabizinesi yokhala ndi{1}}zowerenga zomangidwa mkati mu Januwale. RAIN Alliance idalengeza pulojekiti yokhazikika ya smartphone mu Marichi. Ngati izi zikuyenda bwino, ma tag omwewo omwe amawagwiritsa ntchito kuti azitha kuwerengeka ndi aliyense yemwe ali ndi foni.

 

 

Ma tag ambiri a RFID ogulitsa ndi UHF yongokhala. Alibe batire. Wowerenga akatumiza mafunde a wailesi, chizindikirocho chimatenga mphamvu zokwanira kuti chiphatikizire chip chake ndikubwezanso chizindikiro chokhala ndi nambala yozindikiritsa. Chizindikirocho sichichita chilichonse. Wowerenga amachita ntchitoyo.

 

Pazikhalidwe zabwino, tag ya UHF yokhazikika imatha kuwerengedwa pa 10 metres. Zinthu zabwino zimatanthauza mpweya wotseguka, palibe chitsulo pafupi, palibe zakumwa, chizindikiro chokhazikika bwino chokhudzana ndi mlongoti wowerenga. Kuyika m'nyumba zosungiramo zinthu zowerengera mokhazikika komanso-tinyanga zolemera kwambiri nthawi zina zimapeza 12 kapena 15 metres. Zofotokozera kuchokera kwa opanga ma tag nthawi zambiri amaganiza zokhazikitsa bwino zomwe mulibe m'malo osungira enieni.

 

Ikani chizindikiro chomwecho pa shelefu yachitsulo ndipo madontho osiyanasiyana. Ikani pa botolo la madzi ndipo imagweranso. Chitsulo chimasonyeza chizindikiro. Madzi amachitenga. Ma tag okhudzana ndi mlongoti wa owerenga nawonso amafunikira. Wowerenga wokhala ndi mlongoti-wokhala ndi polarized antenna amafunika kuti tagi ikhale yolumikizidwa mwanjira inayake. Zozungulira{7}}tinyanga ta polarized ndi okhululuka koma amasiya kusiyanasiyana.

 

 

Ma tag otsika-pa 125 kHz owerengedwa pa 10 centimita kapena kuchepera. Izi zimalowa m'makhadi ofikira komanso tchipisi tating'onoting'ono ta nyama. Ma tag apamwamba-pa 13.56 MHz amafika pafupifupi mita. Makhadi olipira amagwiritsa ntchito bandi iyi. Mtundu waufupi ndi mawonekedwe. Mumadina khadi pa terminal. Inu simumachigwedeza icho kuchokera kudutsa chipindacho.

 

Ma tag omwe amagwira ntchito ndi osiyana. Iwo ali ndi mabatire. Iwo amawulutsa. Amagwira ntchito pa 30 metres, 50 metres, 100 metres kutengera kukhazikitsidwa. Mafakitale ena amawerenga ma tag okhazikika pamamita mazana angapo. Batire imawonjezera mtengo ndi kukula kwake. Potsirizira pake chimafa. Koma pakutsata zotengera zotumizira kapena magalimoto pabwalo, kungokhala chete sikukwanira.

 

Funso la foni ndi lokhudza UHF wopanda pake. Foni siyingakwane tinyanga zazikulu zomwe owerenga nyumba yosungiramo katundu amagwiritsa ntchito. Malamulo amachepetsa kuchuluka kwa mphamvu zomwe chogwirizira pamanja chingaulutse. Thomas Brunner ku Kathrein Solutions akuti mafoni{3}akhoza kufika 120 centimeters bwino kwambiri. Kumeneko kuli pafupi ndi kugwiritsira ntchito khadi yolipira kusiyana ndi kufufuza zinthu kuchokera m'sitolo.

 

 

Katherine Albrecht adakhala zaka zambiri akuchenjeza za RFID. Ali ndi doctorate kuchokera ku Harvard. Anayambitsa gulu la ogula lotchedwa CASPIAN mu 1999. Iye analemba buku mu 2005 akutcha ma tag a RFID "spychips." Bukuli lidatchula zolemba za IBM ndi BellSouth zofotokoza njira zotsatirira anthu kudzera muzovala zawo ndi zinyalala. Anthu amakampani adati adakokomeza. Anati akukonzekera kuwunika anthu ambiri. Mkanganowo sunathe kwenikweni. Ma tag adalowa muzinthu.

 

Funso lachinsinsi limadalira pamitundu. Chizindikiro chomwe chimawerengedwa pa ma centimita awiri ndizovuta kusanthula mobisa. Chizindikiro chomwe chimawerengedwa pamamita 10 ndichosavuta. Foni yomwe imawerengedwa pa mita ndi penapake pakati. Kaya izi ndizofunikira zimatengera zomwe tagiyo ili nayo komanso amene akufuna.