The AMPWISE Project

M. Blagojevic, A. Dieudonne, L. Kamecki, M. E. Kiziroglou, K. Krastev, D. Marty, D. Piguet, S. Spasic, S. W. Wrightand, E. M. Yeatman

Abstract

This paper presents an energy autonomous Wireless Sensor Network (WSN) for monitoring the structural current in aircraft structures. A hybrid inductive/hall sensing concept is introduced demonstrating 0.5 A resolution, < 2% accuracy and frequency independence, for a 5 A – 100 A Root-MeanSquare (RMS), DC-800 Hz current and frequency range, with 35 mW active power consumption. An inductive energy harvesting power supply with magnetic flux funneling, reactance compensation and supercapacitor storage is demonstrated to provide 0.16 mW of continuous power from the 65 μT RMS field of a 20 A RMS, 360 Hz structural current. A low-power sensor node platform with a custom multi-mode duty cycling network protocol is developed, offering cold starting network association and data acquisition/transmission functionality at 50 μW and 70 μW average power respectively. WSN level operation for 1 minute for every 8 minutes of energy harvesting is demonstrated. I. I

Keywords

AMPWISE; Cleansky, current sensor, energy harvesting

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IMEKO-TC4-2023-40.pdf

DOI

10.21014/tc4-2023.40

IMEKO TC

TC4 - Measurement of Electrical Quantities

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