Design and Implementation of Low‑Cost Real‑Time Energy Logger for Industrial and Home Applications

With the significant increase in energy demands in the last decade, the issues of unnecessaryenergy usage have increased rapidly. Therefore, there is an immediate need to providea cheap and easily accessible monitoring tool for the energy consumed by an applianceused in homes and industries. Instead of monitoring the total power consumption of thehouses and/or industries, it is useful to monitor the power consumption of the individualappliance, which in turn, helps in saving the overall energy usage and thereby makes itcost-effective. This paper presents a cost-efficient design and implementation of a monitoringsystem that can precisely measure the current and voltage of each appliance. Thedesign provides tracking of device activity in a real-time environment for the industries andhelps in adopting to the green initiative. The design comprises of Arduino based microcontrollerand Raspberry Pi, that performs precise measurements of current and voltageof the device, followed by measuring the power consumed by the device. This paper presentstwo different system designs, one for the single-phase measurements and the otherfor the DC measurements. The single-phase measurement device comprises of 10-bit ADCwhereas, the 24 V DC measurement device comprises of a 12-bit ADC, which provideshigher measurement accuracy compared to other systems available in the market. Theimplemented design uses the EmonCMS web application to accumulate and envision themonitored data. It provides a flexible and user-friendly solution to monitor the measureddata easily on any android or iOS devices.