title: Development of polymer-based sensors for integration into a wireless data acquisition system suitable for monitoring environmental and physiological processes.
abstract: In this work, the pressure sensing properties of polyethylene (PE) and polyvinylidene fluoride (PVDF) polymer films were evaluated by integrating them with a wireless data acquisition system. Each device was connected to an integrated interface circuit, which includes a capacitance to frequency converter (C/F) and an internal voltage regulator to suppress supply voltage fluctuations on the transponder side. The system was tested under hydrostatic pressures ranging from 0 to 17 kPa. Results show PE to be the more sensitive to pressure changes, indicating that it is useful for the accurate measurement of pressure over a small range. On the other hand PVDF devices could be used for measurement over a wider range and should be considered due to the low hysteresis and good repeatability displayed during testing. It is thought that this arrangement could form the basis of a cost-effective wireless monitoring system for the evaluation of environmental or physiological processes.
authors.affiliation: Electronic & Computer Engineering Department, University of Limerick, Limerick, Ireland. khalil.arshak@ul.ie <khalil.arshak@ul.ie>
authors.forename: K
authors.initials: K
authors.lastname: Arshak
authors.forename: D
authors.initials: D
authors.lastname: Morris
authors.forename: A
authors.initials: A
authors.lastname: Arshak
authors.forename: O
authors.initials: O
authors.lastname: Korostynska
authors.forename: E
authors.initials: E
authors.lastname: Jafer
authors.forename: D
authors.initials: D
authors.lastname: Waldron
authors.forename: J
authors.initials: J
authors.lastname: Harris
mesh_terms: D004784:Environmental Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D011108:Polymers / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D018511:Systems Integration; D013686:Telemetry / Q000295:instrumentation* / Q000379:methods; D014160:Transducers, Pressure
chemical_list: D011108:Polymers