基于窄带物联网技术的电量监控系统设计

针对现有电力仪表存在信号采集精度低，数据传输方式落后的特点，开发了一款集成无线通信功能的电力仪表。该仪表的硬件由供电电源、电量采集与计量单元、通信单元、控制与存储单元等组成。采用主控芯片STM32F030和新型数字式多功能计量芯片V9203，实现数据采集处理与本地存储。MCU通过窄带物联网（Narrow Band Internet of Things, NB-IoT）无线通信模块将仪表采集到的数据上传到OneNET云平台，实现用户在远程情况下随时通过前端网页登录系统查看每块仪表电量采集信息，便于监测与管理。经实验测试证明，此款电力仪表能够高效、准确地采集到电流、电压、有功功率和功率因数并将这些数据实时上传至云平台。

Design of Power Monitoring System Based on Narrow Band Internet of Things Technology

For the existing power meters, the signal acquisition accuracy is low and the data transmission mode is backward,a power meter with integrated wireless communication function has been developed.The hardware of the meter consists of power supply, power collection and measurement unit, communication unit, control and storage unit.The main control chip STM32F030 and the new digital multi-function metering chip V9203 are used to realize data acquisition and processing and local storage.The MCU uses the NB-IoT wireless communication module to upload the data collected by the meter to the OneNET cloud platform,to realize the user to view the power collection information of each meter through the front-end webpage login system at any time in the remote situation, which is convenient for monitoring and management.The experiments provesthat this power meter can collect power parameters such as current, voltage, active power and power factor efficiently and accurately and upload these data to the cloud platform in real time.