Kutaurirana kweNB-IoT kwemuchina we ultrasonic water meter kunoitwa zvichibva pakugadzirwa kwe cloud-pipe kubva kumagumo kusvika kumagumo. Maitiro ese anosanganisira matanho mana akakosha:
1. Kuyera nekuunganidza data padivi reterminal
Chiyero chemvura che ultrasonic chinoshandisa nzira yekusiyana kwenguva (ToF) kuyera kuyerera: ma transducer maviri e ultrasonic anotumira uye anogamuchira masaini achichinjana. Kuyerera kwemvura kunoverengerwa nekuyera musiyano wenguva pakati pekupararira kwemvura kumusoro nepasi. MCU inounganidza data rekuyerera kwemvura, inoita muripo wekupisa, uye inoichengeta munharaunda.
2. Kuwana network yeNB‑IoT uye kutumira data
Module yeNB IoT yakavakwa (semuenzaniso, BC95, A7670) inomutswa neRTC timer. Inotanga kupinda kwenetiweki kuburikidza nemirairo yeAT, inopedzisa kusimbiswa kwemushandisi, uye inosimbisa kubatana. Data rinoiswa mufomati yakajairika (semuenzaniso, TLV/Binary) ine device ID, timestamp, flow, uye battery status, yozotumirwa uchishandisa maprotocol akaita seCoAP/MQTT.
3. Kutumira mberi uye kuchengetedzeka kwenetwork layer
Data rinodarika nepachiteshi cheNB‑IoT → core network → IoT platform (semuenzaniso, OneNET). Kutumirwa kwacho kunodzivirirwa neDTLS encryption uye kusimbiswa kwechiratidzo chemudziyo kudzivirira kutambwa kana kuteererwa kwemashoko.
4. Kushandiswa kwepuratifomu padivi uye kutonga kwenzira mbiri
Puratifomu yemagetsi inoshandiswa pakugadzira mvura inoongorora nekuchengetedza data, zvichiita kuti kuverenga kuri kure, kubhadhara, kuona kubuda kwemvura, uye kudzora mavharuvhu. Puratifomu iyi inogona kupa mirairo (semuenzaniso, kuverenga maparameter, vhura/vhara vharuvhu) kumita, iyo inozviita uye inodzosera mhedzisiro kuburikidza netiweki yeNB‑IoT.
Nzira huru dzekushandisa simba shoma:
PSM (Power Saving Mode): Inopinda muhope dzakadzika mushure mekutumirwa, ine simba remagetsi rakaderera se μA level.
eDRX: Inowedzera kugamuchira kusingadzokeri kuti ienzanise nguva yekunonoka uye kushandiswa kwesimba.
Simba remagetsi rinoshandiswa pazuva re uplink rinosvika ~18.7 mJ, zvichiita kuti bhatiri rigare kwemakore 8–10.
Nguva yekutumira: Kubvumbi-21-2026