Title :
Integrated passive and wireless sensor for magnetic fields, temperature and humidity
Author :
Bodong Li ; Yassine, Omar ; Kosel, Jurgen
Author_Institution :
Comput. Electr. & Math. Sci. & Eng. Div., King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia
Abstract :
This paper presents a surface acoustic wave-based passive and wireless sensor that can measure magnetic field, temperature and humidity. A thin film giant magnetoimpedance sensor, a thermally sensitive LiNbO3 substrate and a humidity sensitive hydrogel are integrated together with a surface acoustic wave transducer to realize the multifunctional sensor. The device is characterized using a network analyzer under sequentially changing humidity, temperature and magnetic field conditions. The first hand results show the sensor response to all three sensing parameters with small temperature interference on the magnetic signals.
Keywords :
giant magnetoresistance; humidity sensors; hydrogels; magnetic field measurement; magnetic sensors; magnetoresistive devices; network analysers; surface acoustic wave transducers; temperature measurement; wireless sensor networks; LiNbO3; humidity sensitive hydrogel; magnetic fields; multifunctional sensor; network analyzer; surface acoustic wave transducer; surface acoustic wave-based passive sensor; temperature measurement; thermally sensitive LiNbO3 substrate; thin film giant magnetoimpedance sensor; wireless sensor; Humidity; Magnetic fields; Surface acoustic waves; Temperature measurement; Temperature sensors; Wireless communication;
Conference_Titel :
SENSORS, 2013 IEEE
Conference_Location :
Baltimore, MD
DOI :
10.1109/ICSENS.2013.6688134
