Coarse-grained cycle-accurate electricity metering

This article reviews different approaches to electricity metering and proposes novel coarse-grained but cycle-accurate measurement method which preserves the existing Legacy billing applications but supplies historical series of true RMS measurements. New method traces energy variations with cycle-accuracy. To reduce the quantity of data but keep high precision, it uses geometric integration. It transmits accumulated time-series upon timer-driven events. The method is designed in a way to remain compliant with the open APIs developed by Future Internet PPP projects FINESCE and FI-WARE. The proposed approach bridges the Legacy approach and the service-oriented one.