Ukufaka ikhodi ye-Tag & Inkumbulo ye-EPC

Wonke ama-tag e-EPC Gen2 anezinkumbulo ezi-4 ngqo, ngalinye linjongo ethile. Ukuqonda lesi sakhiwo kubalulekile ekufakeni amakhodi, ukufunda, nasekuvikeleni ama-tag akho.

Ibhange 00 (Ligciniwe): Liqukethe i-Kill Password engama-32-bit kanye ne-Access Password engama-32-bit. Amanani azenzakalelayo yi-0x00000000. Iphasiwedi yokubulala ikhubaza unomphela ithegi uma ithunyelwe. ayinakuguqulwa. Iphasiwedi yokufinyelela ivala amabhange enkumbulo ukuvimbela ukubhala okungagunyaziwe.

Ibhange 01 (EPC): Liqukethe i-StoredCRC (ama-bits ayi-16, abalwa ngokuzenzakalelayo), i-StoredPC/Protocol Control (ama-bits ayi-16, ikhombisa ubude be-EPC namakhono e-tag), kanye nenani le-EPC ngokwalo. ngokuvamile ama-bits angama-96 (ama-byte ayi-12) e-SGTIN-96. Amanye ama-tag asekela ama-EPC angama-128-bit noma ngisho nama-496-bit.

Ibhange 10 (TID): Isihlonzi se-Tag esihlelwe efekthri. Liqukethe ikhodi yomkhiqizi we-chip, inombolo yemodeli, kanye nenombolo ye-serial eyingqayizivele. Leli bhange lifundwa kuphela futhi alisoze lashintshwa. okwenza kungabi nani ekulweni nokuqanjwa kwamanga nasekuqinisekiseni ama-tag.

Ibhange 11 (Umsebenzisi): Isitoreji esengeziwe esingakhethwa. Usayizi uyahlukahluka nge-chip: I-NXP UCODE 9 inama-bits angu-0 (akukho nkumbulo yomsebenzisi), i-Quanray QStar-7U inama-bits angu-512 (ama-byte angu-64). Yisebenzisele izinombolo ze-batch, izinsuku zokuhlola, imingcele yokushisa, noma amarekhodi okulungisa. Njalo hlola umthamo okhona ngaphambi kokubhala.

I-SGTIN-96 iyindlela ye-EPC esetshenziswa kakhulu. Ifaka ikhodi ye-GTIN-14 (ibhakhodi yomkhiqizo wakho) kanye nenombolo yochungechunge eyingqayizivele ngama-bits angu-96 (ama-bytes angu-12). Lokhu kuvumela kufika ezigidini ezingama-274 zezinombolo zochungechunge eziyingqayizivele ngohlobo lomkhiqizo.

Isakhiwo esingama-96-bit: Isihloko (ama-bits angu-8, njalo 0x30 ye-SGTIN-96) → Isihlungi (ama-bits angu-3: 0=konke, 1=POS, 2=icala eligcwele, 3=igcinelwe, 4=iphakethe langaphakathi, 5=igcinelwe, 6=umthwalo weyunithi, 7=ingxenye) → Ukwahlukanisa (ama-bits angu-3: kuchaza ukuthi ama-bits ahlukaniswa kanjani phakathi kwesandulela senkampani kanye nencazelo yento) → Isandulela Senkampani (ama-bits angu-20-40) → Incazelo Yento (ama-bits angu-4-24) → Inombolo Yochungechunge (ama-bits angu-38).

Inani lokwahlukanisa (0-6) linquma ubude besandulela senkampani: P=0 → isandulela esingama-40-bit (izinombolo eziyi-12), P=1 → 37-bit (izinombolo eziyi-11), P=2 → 34-bit (izinombolo eziyi-10), P=3 → 30-bit (izinombolo eziyi-9), P=4 → 27-bit (izinombolo eziyi-8), P=5 → 24-bit (izinombolo eziyi-7), P=6 → 20-bit (izinombolo eziyi-6). Ubude besandulela senkampani yakho ye-GS1 bunquma ukuthi iyiphi inani lokwahlukanisa okufanele ulisebenzise.

┌────────┬──────┬─────┬──────────────┬──────────────┬──────────────┐
│ Header │Filter│Part │Company Prefix│Item Reference│   Serial     │
│ 8 bits │3 bits│3bits│  20-40 bits  │   4-24 bits  │   38 bits    │
│  0x30  │ 0-7  │ 0-6 │  GS1 prefix  │  product ref │  unique ID   │
└────────┴──────┴─────┴──────────────┴──────────────┴──────────────┘

Partition table (defines prefix/item bit allocation):
P=0: 40-bit prefix (12 digits)  P=4: 27-bit prefix (8 digits)
P=1: 37-bit prefix (11 digits)  P=5: 24-bit prefix (7 digits)
P=2: 34-bit prefix (10 digits)  P=6: 20-bit prefix (6 digits)
P=3: 30-bit prefix (9 digits)

Example: 3034257BF7194E4000001A85
  Header=0x30 Filter=1 Part=5 Prefix=0614141
  Item=812345 Serial=6789 → GTIN-14: 80614141123458

Ngaphandle kwe-SGTIN-96, i-GS1 ichaza ezinye izinhlelo ze-EPC ezingama-96-bit zezihlonzi ezihlukene zochungechunge lokuhlinzeka. Ngayinye inebhayithi layo lesihloko.

Ukufunda ama-tag ngesikhathi sokusungula impahla akusebenzi. umfundi usakaza umbuzo futhi ama-tag aphendula nge-EPC yawo evela eBhange 01. Kodwa futhi ungafunda ngokusobala noma yiliphi ibhange lenkumbulo ngokuthumela umyalo othi READ ngenombolo yebhange, ukusetha igama, kanye nokubala kwamagama.

Ukubhala kuma-tag kudinga ukunemba okwengeziwe. I-tag kumele ihlukaniswe (i-tag eyodwa kuphela ephendulayo), futhi ukubhala kwenzeka igama elilodwa (ama-bits angu-16) ngesikhathi. Ukubhala okugcwele kwe-EPC engama-96-bit kudinga ukubhala kwamagama alandelanayo ayi-6. Ukubhala ngakunye kuthatha imizuzwana eyi-10-20, ngakho ukufaka ikhodi ku-tag eyodwa kuthatha imizuzwana engama-60-120 yedatha ye-EPC kuphela.

Ukwahluleka okuvamile kokubhala: I-Tag ikude kakhulu ne-antenna (idinga isignali eqinile yokubhala kunokufunda. letha i-tag ngaphakathi kuka-1m). Ama-tag amaningi emkhakheni (ukuhlukaniswa kwehlulekile. hlukanisa i-tag eqondiwe). Inkumbulo ye-Tag ivaliwe (iphasiwedi yokufinyelela iyadingeka). Ukubhala ukuqinisekisa kwehlulekile (zama futhi, noma i-tag ingase ibe nephutha. izinga elivamile lephutha lingu-1-3 ngamunye ku-10,000).

TX → 5A 00 01 02 11 00 0C [EPC_12_BYTES] [CRC16]

Write per 16-bit word: 10-20ms
Full 96-bit EPC = 6 words = 60-120ms total

With access password:
TX → 5A 00 01 02 11 00 10 [PWD_4B] [EPC_12B] [CRC16]

Amathikithi e-EPC Gen2 asebenzisa amaphasiwedi amabili angama-32-bit okuvikeleka. Iphasiwedi Yokufinyelela ivala amabhange athile ememori. uma isethiwe, lelo bhange lifuna iphasiwedi ngaphambi kwanoma yimuphi umsebenzi wokufunda noma wokubhala. Iphasiwedi Yokubulala ikhubaza unomphela ithegi uma idluliselwe. umsebenzi ongenakulungiswa osetshenziswa ikakhulukazi ngobumfihlo babathengi ekuthengiseni (ukubhubhisa ithegi ngemva kokukhokha).

Imikhuba engcono kakhulu yokuphepha: Ungalokothi usebenzise iphasiwedi ezenzakalelayo yawo wonke ama-zeros (0x00000000) ekukhiqizeni. ayinikezi ukuvikeleka. Khiqiza amaphasiwedi ayingqayizivele nge-tag batch noma sebenzisa isiqalo senkampani yakho njengembewu. Gcina amaphasiwedi ohlelweni lwakho lwangemuva, ungalokothi kuthegi uqobo (imemori yephasiwedi ingafundwa uma ithegi ivuliwe). Vala amabhange e-password ngemva kokuhlela. Cabangela imodi engalandeleki (etholakala kuma-chips amasha) efihla i-TID futhi inciphise i-EPC, inikeze ubumfihlo ngaphandle kokubulala ithegi.

I-GS1 Digital Link ixhumanisa ama-tag e-RFID angokoqobo ngolwazi lwedijithali olutholakala kuwebhu. Iguqula idatha ye-EPC ibe yi-URI ejwayelekile ekhombisa ulwazi lomkhiqizo, izinsiza zokuqinisekisa, izimemezelo zokukhumbula, noma idatha yokuqina.

Ukugeleza: I-Tag EPC (isb., 3034257BF7194E4000001A85) → Khipha ku-GTIN-14 (80614141123458) + Serial (6789) → Yakha i-URI: https://id.gs1.org/01/80614141123458/21/6789. Le URI ingakhombisa ekhasini lakho lomkhiqizo, i-API yokuqinisekisa, noma iyiphi insiza ebhaliswe kunethiwekhi ye-GS1 Digital Link resolver.

Ukusetshenziswa okusebenzayo: Skena ingubo enamathegi esitolo esidayisa impahla → I-URI ikhombisa imiyalelo yokunakekela umkhiqizo, umhlahlandlela wosayizi, kanye nesiqinisekiso sokuqina. Skena umuthi onamathegi → I-URI ikhombisa ukuqinisekiswa (ngabe lo mkhiqizo uyiqiniso?), usuku lokuphelelwa yisikhathi, nesimo sokukhumbula. Skena impahla enamathegi → I-URI ikhombisa umlando wokulungisa neshejuli yokuhlola.