Fecha de publicación: 10/07/2020 Fuente: Wipo "IOT" The utility model discloses an irrigation pump station flow monitoring system based on NB-IoT. The system comprises a plurality of micro monitoring terminals, the micro monitoring terminal performs information interaction with the IoT platform; the IoT platform is in bidirectional communication with the server. The server is in communication connection with a mobile phone APP or a Web page; the monitoring terminal comprises a circuit board, a current transformer and an electricity taking coil. The current transformer is sleeved outside a power supply cable of the motor; the power taking coil is fixed on the power supply cable; wherein the power taking coil and the current transformer are both connected to the circuit board, the circuit board is provided with a rectifying and filtering circuit, and a sampling circuit, a main control chip and an NB-IoT module which are connected in sequence, the sampling circuit is connected with the current transformer, and the rectifying and filteringcircuit is connected with the power taking coil, the sampling circuit, the main control chip and the NB-IoT module. The irrigation pump station flow monitoring system based on NB-IoT provided by the utility model is simple to install, does not need to modify an original pump station installation structure, does not need to operate after being connected with commercial power, and can realize comprehensive monitoring of an existing large-scale distributed pump station.