Yadda ake aiwatar da sadarwa ta NB-IoT don mitar ruwa ta ultrasonic?

Ana aiwatar da sadarwa ta NB-IoT ta na'urar auna ruwa ta ultrasonic bisa tsarin ƙarshen bututun gajimare zuwa ƙarshe. Duk tsarin ya haɗa da manyan matakai guda huɗu:
1. Aunawa da tattara bayanai a gefen tashar
Mita mai amfani da ruwa ta ultrasonic tana amfani da hanyar bambancin lokaci (ToF) don auna kwarara: wasu na'urori masu auna zafi na ultrasonic suna watsawa da karɓar sigina a madadin haka. Ana ƙididdige ƙimar kwarara ta hanyar auna bambancin lokaci tsakanin yaɗuwar sama da ƙasa. MCU tana tattara bayanan kwarara, tana yin diyya ga zafin jiki, kuma tana adana shi a gida.
2. Samun damar hanyar sadarwa ta NB‑IoT da watsa bayanai
Tsarin NB‑IoT da aka gina a ciki (misali, BC95, A7670) ana tashe shi ta hanyar mai ƙidayar lokaci na RTC. Yana fara samun damar hanyar sadarwa ta hanyar umarnin AT, yana kammala tantance mai aiki, kuma yana kafa haɗi. Ana tattara bayanai a cikin tsari na yau da kullun (misali, TLV/Binary) tare da ID na na'ura, tambarin lokaci, kwarara, da matsayin baturi, sannan a aika su ta amfani da ladabi kamar CoAP/MQTT.
3. Gabatar da matakan cibiyar sadarwa da tsaro
Bayanai suna ratsawa ta tashar tushe ta NB‑IoT → cibiyar sadarwa ta tsakiya → dandamalin IoT (misali, OneNET). Ana adana watsawar ta hanyar ɓoye DTLS da kuma tabbatar da asalin na'urar don hana yin kutse da sauraron bayanai.
4. Aikace-aikacen gefe-dandamali da kuma sarrafa hanyoyi biyu
Dandalin samar da ruwa yana bincika bayanai kuma yana adana su, yana ba da damar karanta bayanai daga nesa, biyan kuɗi, gano ɓuɓɓugar ruwa, da kuma sarrafa bawul. Dandalin zai iya bayar da umarni (misali, karanta sigogi, buɗe/rufe bawul) ga mitar, wanda ke aiwatar da su kuma yana dawo da sakamako ta hanyar hanyar sadarwa ta NB‑IoT.
Manyan hanyoyin rage ƙarfin lantarki:
PSM (Yanayin Ajiye Wuta): Yana shiga cikin barci mai zurfi bayan watsawa, tare da ƙarancin wutar lantarki kamar matakin μA.
eDRX: Yana faɗaɗa karɓar da ba a ci gaba da yi ba don daidaita latency da amfani da wutar lantarki.
Yawan amfani da wutar lantarki a sama da sama a kowace rana shine ~18.7 mJ, wanda ke ba da damar yin amfani da batirin na tsawon shekaru 8-10.