A na-eme ka nkwukọrịta NB-IoT nke mita mmiri ultrasonic dabere na nhazi njedebe nke ọkpọkọ ojii ruo na njedebe. Usoro a dum gụnyere usoro anọ dị mkpa:
1. Nha nha na nchịkọta data n'akụkụ njedebe
Igwe mmiri ultrasonic na-eji usoro ọdịiche oge (ToF) atụ mmiri: ụzọ abụọ nke ndị na-agbanwe ihe na ultrasonic na-ebufe ma nata akara n'otu oge. A na-agbakọ ọnụego mmiri site na ịtụ ọdịiche oge dị n'etiti mgbasa elu na nke dị n'okpuru ala. MCU na-anakọta data mmiri, na-eme nkwụghachi okpomọkụ, ma na-echekwa ya n'ógbè.
2. NJ‑IoT ohere na nnyefe data netwọk
Mọdụlụ NB‑IoT arụnyere n'ime ya (dịka ọmụmaatụ, BC95, A7670) na-akpọte site na ihe nrịbama RTC. Ọ na-amalite ịnweta netwọk site na iwu AT, na-emecha nyocha onye ọrụ, ma na-emepụta njikọ. A na-etinye data n'ụdị ọkọlọtọ (dịka ọmụmaatụ, TLV/Binary) yana ID ngwaọrụ, timestamp, flow, na ọnọdụ batrị, wee ziga ya site na iji usoro dịka CoAP/MQTT.
3. Nbugharị na nchekwa nke oyi akwa netwọk
Data na-agafe site na ọdụ ntọala NB‑IoT → netwọk isi → ikpo okwu IoT (dịka ọmụmaatụ, OneNET). A na-echekwa nnyefe ahụ site na nzuzo DTLS na njirimara njirimara ngwaọrụ iji gbochie mmetọ na izochi ihe.
4. Ngwa n'akụkụ ikpo okwu na njikwa ụzọ abụọ
Ikpo okwu mmiri na-enyocha ma na-echekwa data, na-eme ka ịgụ ihe dị anya, ịkwụ ụgwọ, nchọpụta mmiri na-agbapụta, na njikwa valvụ. Ikpo okwu ahụ nwere ike inye iwu (dịka ọmụmaatụ, gụọ paramita, mepee/mechie valvụ) na mita ahụ, nke na-emezu ha ma na-eweghachi nsonaazụ site na netwọk NB‑IoT.
Isi usoro obere ike:
PSM (Ụdị Nchekwa Ike): Na-abanye n'ụra miri emi mgbe ebusịrị ya, yana ọkụ eletrik dị ala dịka ọkwa μA.
eDRX: Na-agbatị nnabata na-aga n'ihu iji dozie oge na oriri ike.
Oke ike a na-eji kwa ụbọchị eme ihe bụ ~18.7 mJ, nke na-eme ka batrị dịruo afọ 8–10.
Oge ozi: Eprel-21-2026