#Project Overview

Edge-Computed Polyphase Smart Energy Meter

Led the end-to-end hardware and firmware design of an industrial-grade polyphase smart energy meter at Racanaa Energy. This system sampling current and voltage values on multiple phases computes root-mean-square (RMS) metrics, power factor, and harmonics directly at the edge, offloading heavy processing workloads from cloud servers.

Optimizing firmware DMA (Direct Memory Access) channels to shuttle samples from high-speed analog-to-digital converters (ADC) to processing memory, this device achieves high accuracy under active load variations.

4-Layer Board Layout with EMI/EMC Isolation

High-Speed SPI Flash wear-leveling log system

Calculates RMS Voltages/Currents on local CPU Core

Reduces cellular network bandwidth overhead by 70%