Real-Time Monitoring of Low-Voltage Power Load Using Bluetooth mesh IoT Technology: A Shift From Macro to Micro

To maximize the effectiveness of smart grids and integrated energy systems, it is essential to acquire accurate data on electricity consumption loads. However, current smart meters are still unable to collect specific power consumption data from individual electrical devices. Therefore, to address the issue, a low-cost, real-time remote monitoring load monitoring system based on Bluetooth mesh wireless network and IoT technology has been developed in this work. The Bluetooth mesh network consists of multiple client nodes, one server node and relay nodes (if necessary). The server node comprises a power metering chip and an ARM architecture Bluetooth microcontroller. It is responsible for measuring data, conducting initial filtering and processing on voltage and current signals, and transmitting the processed data to the service port via the Bluetooth mesh network. The client node, composed of a Bluetooth microcontroller and an ESP32 module, consolidates diverse data and transmits it to the cloud platform for storage via WIFI. Simultaneously, the coverage of the wireless power data collection system can be extended further through Bluetooth mesh relay nodes. A simple WeChat mini program display interface was developed to enable users to view the power detection status at any time during actual use, providing underlying data support for the deployment of users or power departments.