High difference between production and sales and high operating costs are the biggest pain points for water companies. For this reason

water supply companies have long been exploring intelligent water meters. This article fi rst combed the development of intelligent water meters

from wired to wireless

from short-range communications to long-distance communications

from non-operator networks to operator networks. NB-IoT is regarded as the ideal technology. Then the network architecture of intelligent water meter based on NB-IoT and the working mode of intelligent water meter are designed. Finally

the advantages of intelligent water meter based on NB-IoT are analyzed.