RFID Inochengeta Sei Uye Kuendesa Dhata?

 

Rova tagi yeRFID pane chimwe chinhu uye unogona kuiverenga-chero munhu akaita zvinhu mudura anoziva kuti zvinhu izvi zvakakunakira sei. Asi kurerukira parutivi, kana iwe ukabvunza vanhu vazhinji kuti vanyatso kutsanangura kuti data rinopinda nekubuda sei, havagone. Pandakatanga kupinda muindastiri iyi, ndakanga ndarasika zvachose. Zvakatora kupiswa nevatengesi nguva shoma ndisati ndafunga zvinhu.

 

Iyo chip mukati me tag idiki zvekuti haugone kuiona neziso rakashama, asi ine nzvimbo yekuchengetera. Zvakadini zvinoenderana nemhando yechip-yakachipa inongova ne96-bit EPC, inodhura inogona kukwira kusvika kumakilobhayithi akati wandei. 96 mabhiti anonzwika madiki, asi anotokwana. Shandura kuti ive hexadecimal uye unowana mavara makumi maviri nemana, anodarika kukwana kuchengeta kodhi yechigadzirwa. Ndakaona vatengi vachiomerera pakumanikidza misi yekugadzira, nhamba dzebatch, uye mazuva ekupera kwenguva zvese mumaki. Mushure mekuita masvomhu, ma tag ane hombe mushandisi memory anodhura zvakapetwa katatu zvakapetwa. Vakazosara vongochengeta ID voisa zvimwe zvese mudura.

 

 

Vamwe vanhu vanobvunza kuti ma tag anochengeta sei data pasina mabhatiri. Ndakabvunza mubvunzo mumwe chete mazuva iwayo. Zvinoitika kuti vanoshandisa EEPROM, svikiro rekuchengetedza rinochengeta data pasina simba. Kusiyana ne USB flash memory, EEPROM inogona kugadziridzwa byte byte, nepo flash ichida kudzima zvidhinha zvese. Izvo zvakanyatsokodzera RFID kwaunowanzo shandura marekodhi ega. Data yakanyorwa kwairi inogona kugara makore gumi kusvika makumi maviri-kureba kupfuura tegi pachayo.

 

Iyo data kutapurirana musimboti iri zvishoma convoluted. Matagi haana ma transmitters uye haashande masaini masaini. Muverengi anoburitsa masaisai emagetsi, antenna yeteki inoasimudza uye inogadzira yazvino, uye chip inomhanya padiki diki resimba. Ipapo iyo chip inoita chinhu chimwe: inodzokorodza inoshandura iyo antenna mutoro wekudzivirira. Kana impedance ichichinja, simba reinoratidzwa electromagnetic wave rinochinja naro. Muverengi anoona misiyano iyi mune inotaridzwa wave{{5}yepamusoro, yakaderera, yakakwira, yakaderera-ndiwo ma0 nema1 ako.

 

 

Izvi zvinonzi backscatter. Pandinotsanangura kuvatengi, ndinowanzo svetuka-zvedzidzo zvakanyanya. Ndinongoti tag yakaita sechimiro-chionioni chinochinja. Muverengi anovheneka tochi pairi, uye tag inotaridza mwenje kumashure murwiyo rwayo nekushandura kona yegirazi. Hazvina kunyatsojeka, asi zviri nyore kunzwisisa.

 

Mumapurojekiti chaiwo, musoro mukuru hausi dzidziso-kukanganisa kwezvakatipoteredza. Simbi inoratidza mafungu emagetsi, mvura inoatora, uye matura akazara ese ari maviri. Gore rakapera ndakaita chirongwa pane imwe distillery. Matagi aive pamabhodhoro egirazi. Mabhodhoro asina chinhu akapa mana kusvika mashanu metres kuverenga. Yakazadzwa nedoro, iyo yakaderera kusvika pasi pemita imwe chete. Takazozvigadzirisa nekushandura tag kuiswa. Simbi yakatoipa. Kamwe mutengi akangonamira ma tag pamadhiramu esimbi{{9}akatadza kuaverenga zvachose. Takazoshandisa ma anti{11}metal tags ane layer ye wave{12}}absorbing material nechepasi. Mutengo wakakwira kanomwe kana kasere.

 

Frequency mabhendi ane basa zvakare. UHF yeChina inoshandisa 920-925 MHz, iyo US inoshandisa 902-928, Europe inoshandisa 865-868. Paunenge uchitenga vaverengi, tarisa kuti ndeapi mabhendi avanotsigira, zvikasadaro michina inotorwa kunze kwenyika inogona kusashanda mudzimba. Ndakaona vanhu vachitenga vaverengi vakashandiswa kubva kuUS kuti vachengetedze mari, ndokuzongoona kuti frequency band yaive isiriyo uye vakatadza kana kuidzosera.

 

 

Kune vashoma vanogadzira chip. Impinj's Monza series ine chikamu chepamusoro chemusika. NXP's UCODE yakajairika zvakare. Machipisi akasiyana ane akasiyana ndangariro masisitimu uye sensitivities. Kunzwa kwepamusoro kunoreva kuti simba diki rinogona kumisa teki, zvinoreva kureba kuverenga. Pakusarudza, tarisa pane chaiyo application-usangotarisa mutengo.

 

Nyora denderedzwa chinhu chisingatarisike zviri nyore. EEPROM yakatemerwa 100,000 cycles, zvinonzwika sezvizhinji, asi mamwe mamiriro anogona kurova iyo nhamba. Ndakashanda pane inodzoserwa mudziyo manejimendi purojekiti uko kwese kunopinda nekubuda kufamba kwaireva kunyora kune iyo tag. Matatu kana mana kutenderera pazuva, pamusoro pechiuru pagore, shandisa iyo kwemakore gumi uye iwe unogona chaizvo kuiwedzera kunze. Ndakurudzira kuti mutengi achinje kuti averenge-ma tag akabatanidzwa nedatabase chete-thegi rinongochengeta ID, zvimwe zvese zvinogadziridzwa mugore. Dambudziko rakadziviswa zvachose.

 

Usavimba nekuchengeteka. Ma tag enguva dzose haana password panzvimbo yeEPC by default-chero munhu anogona kuverenga kana kunyora. Iwe unogona kuseta password yekupinda kuti uivhare pasi, asi ingori 32 bits, isina kuchengetedzeka. Kuwana kutonga uye kubhadhara maapplication anoshandisa kirasi yakasiyana zvachose yemachipi pamutengo wakasiyana zvachose. Mategi anoshandiswa mukugadzira ari kushanda asina kusimira-asi zvakare, havasi kuchengeta data rakasiyana. Chero bedzi vachiverengeka, zvakanaka zvakakwana.