Design of an Individualized Electric Consumption Monitoring for Sub-Metered Tenants

Abstract

Electric submeters are energy monitors that break down individual tenants’ electric usage. However, sub-metering uses traditional energy meters for individualized power consumption. The designed individualized electric consumption monitoring system alternates the said energy meters by integrating a microcontroller, Android application, and Short Message Service (SMS). The system comprises two (2) physical parts: the main and metered units. The meter unit plays the part of an energy meter where it records consumption with a maximum of 30 amps, while the main unit saves the data from the meter unit. These two communicate using Radio-frequency identification (RFID). Data is held in a Micro-SD Card and used for sending the amount by the landlord to the sub-metered individuals. The study uses prototyping during the methodology process, then productive interactions and comparative testing on the evaluation. The system’s accuracy evaluation garnered an average percentage error of 0.108% in voltage and 6.502% in current. Overall, the system substitutes the usage of traditional energy meters in sub-metered tenants, and by applying the recommendation, the system is ready for community usage.