Fecha de publicación: 12/04/2019 Fuente: Wipo "IOT" The invention discloses a water meter based on NB-IoT, comprising a control unit, an NB-IoT communication module, a valve control unit, a display unit, a power supply module, a memory and an SIM card,wherein the NB-IoT communication module is connected to the control unit and interacts with a server via an NB-IoT antenna; the valve control unit is connected to the control unit and used for transmitting a signal to an electric valve; the display unit is connected to the control unit and used for displaying data information of parameters; the power supply module is connected to the control unit; the memory is connected to the control unit and used for storing data information; the SIM card is connected to the control unit and used for obtaining the unique water meter serial number. The beneficial effect of the water meter based on NB-IoT lies in that the NB-IoT signal transmission makes communication stablee and more reliable.