A tunnel magnetoresistive effect wattmeters-based wireless sensors network

摘要

Highlights ? Current sensors based on the tunnel magnetoresistive effect are used as analogue multipliers. ? An analogue and digital acquisition system to extract different energy related measurands (active power, rms current or power factor) is designed. ? A wireless sensor network to manage the power measurements and to show them in a web page is designed. Abstract In the present work a wireless sensors network (WSN) for smart energy metering is presented using the ZigBee protocol as the communication link. Each network node process the electrical power by means of a Wheatstone bridge sensor based on the tunnel magnetoresistive (TMR) effect working as analogue multip