Energy consumption audit system for smart building

In this paper, a wireless sensor network based measurement system was proposed to conduct real-time measurement of energy consumption of household appliances and display this information on a graphical user interface on a computer. The system was also able to calculate an optimized schedule for the appliances to reduce energy cost in terms of time of use (TOU) tariffs. The sensor node and sink node has been developed in compliance with IEEE1451.2 and IEEE802.15.4 standards. And also the current and voltage sensors were also designed from first principals. The Zigbee series II RF transceivers employing the Zigbee communication protocol was used for communication and forming of the wireless sensor network. We have created a user interface able to display real time and historic energy consumption of appliances from IEEE1451.1 standard. We have created an optimization algorithm which scheduled appliance operation times within user set allowable operation times according to TOU tariffs.