8 Channel 1.5KW Wireless ( and RS485 ModBus ) Power Meter
Project Detail
Voltage And Current Meter For an Industrial Device in an environment full of Transformers , Inductive Loads and EMI emissions .
Wide Input Voltage Range ( -100V <-> +100V ) With 200mV Accuracy .
Wide Current Sensing Range ( 0 <-> 20A ) With 100mA Accuracy .
RS485 Interface with Modbus Protocol supports .
LoRaWAN Connectivity .
Design Sections
Schematics
PCB
Firmware Design
Key Part Of the Design
STM32F1
SPI-FLASH
Voltage Input ( -100V <-> +100V )
Current Meter ( 0 <-> 20A )
LoRaWAN
RS485 ModBUs Network
Wide Operating Vin ( +8V <-> +100V ) with polarity Protection
Tools Used
Schematics and PCB : Altium Designer ( 2 Layers )
Firmware : Keil , C/C++ , ARM-COMPILER
