digital energy metering for electrical system management
Electrical energy metering is investigated due to the demand for energy efficiency. The scope was digital DC metering (AC later), in a cost effective and accurate manner. Accurate voltage, current and time values were necessary. Detailed algorithms were needed and created. An energy calibrator system was designed with two Agilent meters, an RTO-B sense resistor, and a PC interface (Visual Basic). A prototype meter was designed using the MSP430 microcontroller and BVS-M sense resistor (1m?), and was tested. Special attention had to be given to the MSP430's embedded 16-bit ADC and op-amp system which was complicated, yet powerful. From the MSP430, a highly functional, low cost energy meter was realized.
digital energy meter electric sense resistor msp430 microcontroller agilent-34410a charge