Kodi mungagwiritse ntchito bwanji kulumikizana kwa NB‑IoT pa mita yamadzi ya ultrasonic?

Kulumikizana kwa NB-IoT kwa chipangizo choyezera madzi chopangidwa ndi ultrasonic kumachitika kutengera kapangidwe ka mapaipi amtambo kuyambira kumapeto mpaka kumapeto. Njira yonseyi ikuphatikizapo magawo anayi ofunikira:
1. Kuyeza mbali ya terminal ndi kusonkhanitsa deta
Choyezera madzi cha ultrasonic chimagwiritsa ntchito njira yosiyana ya nthawi (ToF) poyesa kuyenda kwa madzi: ma transducer awiri a ultrasound amatumiza ndi kulandira zizindikiro mosinthana. Kuchuluka kwa madzi kumawerengedwa poyesa kusiyana kwa nthawi pakati pa kufalikira kwa madzi akumtunda ndi akumunsi. MCU imasonkhanitsa deta ya madzi, imasunga kutentha, ndikusunga komweko.
2. Kupeza ndi kutumiza deta pa netiweki ya NB‑IoT
Gawo la NB IoT lomangidwa mkati (monga BC95, A7670) limadzutsidwa ndi chowerengera nthawi cha RTC. Chimayambitsa mwayi wolowera pa netiweki kudzera mu malamulo a AT, chimamaliza kutsimikizira kwa woyendetsa, ndikukhazikitsa kulumikizana. Deta imapakidwa mumtundu wokhazikika (monga TLV/Binary) yokhala ndi ID ya chipangizo, nthawi yokhazikika, kayendedwe ka madzi, ndi momwe batire ilili, kenako imatumizidwa pogwiritsa ntchito ma protocol monga CoAP/MQTT.
3. Kutumiza ndi kuteteza ma network layer
Deta imadutsa pa siteshoni ya NB‑IoT base station → core network → IoT platform (monga OneNET). Kutumiza kwa data kumatetezedwa ndi DTLS encryption ndi kutsimikizira kuti chipangizocho chili ndi chidziwitso kuti chisasokonezedwe kapena kusokonezedwa.
4. Kugwiritsa ntchito mbali ya nsanja ndi kuwongolera mbali ziwiri
Pulatifomu yogwiritsira ntchito madzi imasanthula ndikusunga deta, zomwe zimathandiza kuwerenga patali, kulipira, kuzindikira kutuluka kwa madzi, ndi kuwongolera ma valavu. Pulatifomuyo imatha kupereka malamulo (monga kuwerenga magawo, kutsegula/kutseka valavu) ku mita, yomwe imawagwiritsa ntchito ndikubweza zotsatira kudzera pa netiweki ya NB‑IoT.
Njira zazikulu zogwiritsira ntchito mphamvu zochepa:
PSM (Njira Yosungira Mphamvu): Imalowa m'tulo tatikulu pambuyo pa kutumiza, ndipo mphamvu yamagetsi imakhala yotsika ngati mulingo wa μA.
eDRX: Imawonjezera kulandirira kosalekeza kuti igwirizane ndi kuchedwa ndi kugwiritsa ntchito mphamvu.
Mphamvu yamagetsi yomwe imagwiritsidwa ntchito tsiku lililonse ndi ~18.7 mJ, zomwe zimapangitsa kuti batri likhale ndi moyo wa zaka 8-10.