Research on NB IoT Valve Controlled Water Meter Based on eDRX Mode
The current NB-IoT battery valve-controlled water meter in the market uses PSM mode,by increasing the reporting frequency during valve closure,to reduce the valve-controlled response delay as far as possible.However,the increase of reporting frequency will result in a significant increase in power consumption.Power consumption and valve control response delay are two variables that restrict each other,valve control response real-time low,delay up to 1 hour.To solve this problem,a method is proposed to shorten the time delay of valve-controlled response without increasing power consumption.This method adopts eDRX mode based on NB-IoT technology,adopts network fast release method and optimizes communication interaction logic to reduce the time delay of valve control response and reduce the power consumption of the whole machine.The test results show that the battery life is normal and the time delay of valve control response is reduced from 1 hour to 40.96 seconds compared with the existing PSM water meter,it has certain reference significance to the future development of valve-controlled water meter.
eDRXNB-IoTInternet of thingsLow power consumptionIntelligent water me-tervalve
NETL
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