Design and implementation of a test bech system for transfer of pressure sensor data

摘要

Nowadays, wireless sensor devices have received wide attention across medical applicationareas; among them, implantable sensing devices are between the most importantbecause of the contribution they make to healthcare and investigations. Nevertheless,the implantable sensing devices must be tested before pre-clinical or in-vivo studiesare initiated and test benches are used to perform this previous tests. For this reason,this thesis presents the design and implementation of a test bench to acquire the datafrom an implantable sensing device that is being developed and will be used to sensethe pressure within the thoracic cavity of mammals. The test bench consists on: asealed container with two connections to increase and sense the internal pressure andis the environment where the sensor will be tested, and a wireless communication systemthat will acquire and process the sensor’s signal and is consisted of two principalmodules that will communicate between them via radio frequency at the biomedicaladmitted band of 433 MHz using an implemented communication protocol. Finally,the calibration and tests on a pizoresistive pressure sensor have been performed toprove the functionality of the system and the experiments results are presented.