A card size energy harvesting electric power sensor for implementing existing electric appliances into HEMS

摘要

This paper presents a card size electric power sensor, which can be installed at the surface of an outlet and senses power of electric appliances whose plug is set to the outlet. The data of the power and the power for MCU is obtained by electromagnetic induction method so that it can be implemented without any work. The sensitivity of the power sensor is 6W, and the power for MCU can be generated from appliances power of 40W. This sensor can be used for measuring the power consumption of existing electric appliances.