ED Sciences Physiques et de l'Ingénieur
Wireless interrogation system for passive surface acoustic wave sensors
by Marlo ANDRADE SANTOS (Laboratoire de l'Intégration du Matériau au Système)
The defense will take place at 14h00 - Visioconférence totale Visioconférence totale
in front of the jury composed of
- Corinne DEJOUS - Professeure des universités - Université de Bordeaux - Bordeaux INP A - Directeur de these
- Raimundo Carlos Silvério FREIRE - Professeur - Universidade Federal de Campina Grande - Directeur de these
- Edmar CANDEIA GURJAO - Professeur - Universidade Federal de Campina Grande - Examinateur
- Robson DE LIMA - Professor - Universidade Federal da Bahia - Examinateur
- Martine SÉBÉLOUÉ - Maîtresse de conférences - Université de Guyane - Examinateur
- Hamida HALLIL - Maîtresse de conférences - IUT GEII Université de Bordeaux - Examinateur
- Sebastian Yuri Cavalcanti CATUNDA - Professor - Universidade Federal do Rio Grande do Norte - UFRN - Rapporteur
- Antoine PRIMEROSE - Professor - Université de Guyane - Rapporteur
With the advancement in the development of connected devices and the Internet of Things (IoT), continuous monitoring of physical and chemical parameters has become a current challenge for our society. Additionally, surface acoustic wave (SAW) devices, widely used as filters in telecommunications, now serve the function of sensors. It is within these two contexts that the work of this thesis is situated. The goal is to develop a wireless reading system using one of these sensors, particularly the Love Wave (LW) sensor with recognized sensitivity in liquid media. Few studies involve this device by performing a remote reading, and exclusively using its acoustic response. In this thesis, we employ a more general approach considering its electromagnetic response and a specific measurement and data acquisition protocol for detecting saline solutions on its surface. Given its passive nature, a wireless reading system is demonstrated, as well as discussion on its key characteristics, advantages, disadvantages, and limitations.