Ukuthunyelwa Kwabafundi Abaningi

Ukusetshenziswa kwe-RFID ekukhiqizeni ngokuvamile kuhilela ama-reader amaningi asebenza ngokubambisana. Indawo yokugcina impahla ejwayelekile ingase ibe nama-reader angu-4-8 eminyango yezindawo zokulayisha kanye no-2-4 ngomugqa wokuthutha. konke kunikeza idatha ku-middleware emaphakathi ehlukanisa, ihlunge, futhi iqondise imicimbi ye-tag kumabhizinisi (WMS, ERP, TMS).

Izakhiwo zinezendlalelo ezintathu: I-Edge (ama-reader + izimpondo ezindaweni zokufunda ezingokoqobo), i-Middleware (ukucutshungulwa komcimbi, ukuhlukaniswa, i-logic yebhizinisi), kanye nokuhlanganiswa (API connections to WMS/ERP/TMS). Isendlalelo se-middleware sibalulekile. iguqula ukufundwa kwe-tag eluhlaza (EPC + antenna + RSSI + isikhathi) ibe yimicimbi yebhizinisi enengqondo efana 'ne-pallet etholwe endaweni yokulayisha 3' noma 'icala elilayishwe elolini B'.

Ukwakhiwa kwenethiwekhi: Noma iyiphi i-reader engashintshi ixhuma nge-Ethernet (ekhethwa ngenxa yokwethembeka) noma i-Wi-Fi. Sebenzisa i-VLAN ezinikelele ngethrafikhi ye-RFID ukuze uyihlukanise kuthrafikhi yenethiwekhi ejwayelekile. Ububanzi obujwayelekile: 1–5 Mbps nge-reader ngesikhathi sokusungula esisebenzayo. Qinisekisa ukuthi ≤50ms ukubambezeleka kwenethiwekhi ngezinhlelo zesikhathi sangempela. Sebenzisa ukuqapha ukushaya kwenhliziyo ukuze uthole ukwehluleka kwe-reader. i-reader eya ngaphandle ku-dock door isho ukuthi ukuthunyelwa okulahlekile.

Uma ngabaqhubi abaningi besebenza eduze, amasiginali abo e-RF angaphazamisa. Amasu amathathu okuxhumanisa ayinhloko akhona, ngalinye linokuhweba:

I-Frequency Hopping Spread Spectrum iyindlela eyinhloko yokuphatha ukuphazamiseka ezindaweni ezinjenge-Vietnam (920–925 MHz). Umfundi ushintsha ngokushesha phakathi kweziteshi ngesikhathi semijikelezo yohlu, eqinisekisa ukuthi noma ngabe abafundi ababili behlangana esiteshini esisodwa, bahlukanisa ekugxumeni okulandelayo.

Ukucushwa okusebenzayo kwe-FHSS: Lungiselela umfundi ngamunye ngemaski yesiteshi echaza ukuthi yiziphi iziteshi okufanele zisetshenziswe. Kubafundi abangu-2 abaseduze, nika imaski ezigcwalisanayo. Umfundi A usebenzisa iziteshi [0, 2, 4, 6, 8] kanti uMfundi B usebenzisa iziteshi [1, 3, 5, 7, 9]. Lokhu kuqinisekisa ukungashayisani. Kubafundi abangu-3, hlukanisa ngamaqembu eziteshi ezi-3-4 ngasinye.

Isivinini sokugxuma sesiteshi sibalulekile: ukugxuma okusheshayo kunciphisa amathuba okushayisana okuqhubekayo kodwa kungeza ngaphezulu. Abafundi abaningi bagxuma ngemuva komjikelezo ngamunye wohlu (njalo ngama-100-400ms). I-NRN protocol SET_WORKING_FREQUENCY umyalo ulungisa uhlu lwesiteshi. isb., ama-byte [0, 2, 4, 6, 8, 10] asetha iziteshi 0 kuya ku-10 ngokuqhelelana okungu-1 MHz.

SET_WORKING_FREQUENCY payload:

2 readers (zero overlap):
  Reader A: [0, 2, 4, 6, 8]   → 920.0, 921.0, 922.0, 923.0, 924.0
  Reader B: [1, 3, 5, 7, 9]   → 920.5, 921.5, 922.5, 923.5, 924.5

3 readers:
  Reader A: [0, 3, 6, 9]      → 920.0, 921.5, 923.0, 924.5
  Reader B: [1, 4, 7, 10]     → 920.5, 922.0, 923.5, 925.0
  Reader C: [2, 5, 8]         → 921.0, 922.5, 924.0

I-Dense Reader Mode iyisici se-EPC Gen2 esenzelwe ngqo izindawo ezinabafundi abaningi abasondelene kakhulu (> abafundi abangu-2 ngaphakathi kwamamitha angu-3). I-DRM isebenzisa ububanzi besiteshi obuncane kanye nezimpendulo zamathegi ezifakwe ku-Miller ukunciphisa ukuphazamiseka phakathi kwabafundi.

Ukuhweba kwe-DRM: Ukuvula i-DRM kuthuthukisa ukuhlangana kwabafundi abaningi kakhulu kodwa kunciphisa ukusebenza komfundi oyedwa. ububanzi obuncane busho ukukhipha idatha ephansi ngomfundi ngamunye. Ngokwenza, umfundi kumodi ye-DRM uhlu lwamathegi cishe ngama-20-30% ngokushesha kunasemodini ejwayelekile, kodwa ukusebenza kwezinga lesistimu kuthuthuka ngoba abafundi abasavimbani.

Nini ukuvula i-DRM: Bangaphezu kwabafundi abangu-2 ngaphakathi kwamamitha angu-3 komunye nomunye. Abafundi eminyango eseduze ye-dock abangakwazi 'ukubona' amathegi omunye nomunye. Ukufakwa okuningi kwesitolo esitolo esiphezulu. Nini ukugcina i-DRM ivaliwe: Abafundi abahlukanisiwe abanokuhlukaniswa okungaphezu kwamamitha angu-5. Izicelo zomfundi oyedwa eziphathwayo. Imigudu yokuthutha enokuvikela okuhle kwe-RF.

Ukuzila kwamathegi kwenzeka lapho amathegi athile emphakathini egxunyuzwa ngokuqhubekayo ngesikhathi semijikelezo yempahla. Lokhu kuvamile ukwenzeka ngoba amathegi aqinile (asondelene ne-antenna, ahlelwe kangcono) alawula ukunakwa komfundi, futhi amathegi abuthakathaka awatholi ithuba lokuphendula.

Ukutholwa: Qapha isilinganiso sakho esiyingqayizivele-tag-count vs isamba-read-count. Uma ufunda amathegi angama-50 ayingqayizivele kodwa uthola ukufundwa okungu-5000, amathegi aqinile ayafundwa kabusha ama-100× ngenkathi amathegi abuthakathaka ezila. Isilinganiso esinempilo singamathikithi ayingqayizivele × 3–10 = ukufundwa okuphelele.

Amaqhinga okunciphisa: Sebenzisa inani elifanele le-Q (eliphansi kakhulu = ukungqubuzana kubangela ukuthi amathegi abuthakathaka alahlekelwe, liphezulu kakhulu = imijikelezo ehamba kancane). Nika amandla ukugcinwa kweseshini (S2/S3) ukuze amathegi asevele efundiwe athule. Zungezisa ukugxila kwe-antenna ngokulandelana ngemachweba e-antenna. Lungisa amazinga wamandla ukuze udale ukumbozwa okufanayo. nciphisa amandla kuma-antenna akhomba amathegi aseduze, andise amandla kuma-antenna ahlanganisa izindawo ezikude. Sebenzisa ifulegi elithi 'target' ukuze ushintshane phakathi kweziqondiso zempahla A→B kanye ne-B→A.

Indlela ethuthukisiwe: Sebenzisa imiyalo 'ekhethiwe' ukuze uhlukanise umphakathi wamathegi ube ngamaqembu bese uhlupha iqembu ngalinye ngokwehlukana. Lokhu kusebenza ikakhulukazi emiphakathini exubile lapho amathegi ezinga lezinto ezincane ehlala khona namathegi ezinga le-pallet elikhulu.

Lokhu kulungiswa kuqinisekiswe ekuthunyelweni kokukhiqiza futhi kumelela imikhuba emihle yezimo ezivamile.