Readout methods for an inductively coupled resonance sensor used in pressure garment application

Abstract The methods needed to inductively read a passive resonance sensor in pressure measurement are studied. A simple dual-layer pressure sensor, a small portable phase response measurement unit and the methods to extract a coupling coefficient compensated resonance frequency are presented. The functionality and accuracy of the measurement are tested in a test rig and demonstrated in a realistic measurement environment. According to the test measurements, the overall performance of this wireless system is promising and the accuracy is within the typical range of the measurements made in the field of pressure garments.

[1]  K. Takahata,et al.  A hydrogel-based passive wireless sensor using a flex-circuit inductive transducer , 2009 .

[2]  Jarmo Verho,et al.  Wireless interrogation techniques for sensors utilizing inductively coupled resonance circuits , 2010 .

[3]  D. Marioli,et al.  A Distance Compensated Telemetric Humidity Sensor Based on the Parasitic Capacitance Variation , 2006, 2006 IEEE Instrumentation and Measurement Technology Conference Proceedings.

[4]  M. Fonseca,et al.  Wireless micromachined ceramic pressure sensor for high-temperature applications , 2002 .

[5]  Robert Puers,et al.  A readout circuit for an intra-ocular pressure sensor , 2004 .

[6]  C. Collins,et al.  Miniature passive pressure transensor for implanting in the eye. , 1967, IEEE transactions on bio-medical engineering.

[7]  S.F. Pichorim,et al.  A Novel Method to Read Remotely Resonant Passive Sensors in Biotelemetric Systems , 2008, IEEE Sensors Journal.

[8]  W. Boeckx,et al.  Reproducibility of repeated measurements with the Kikuhime pressure sensor under pressure garments in burn scar treatment. , 2007, Burns : journal of the International Society for Burn Injuries.

[9]  Jarmo Verho,et al.  Totally passive wireless biopotential measurement sensor by utilizing inductively coupled resonance circuits , 2010 .

[10]  Richard James Neil Helmer,et al.  Preliminary development of a wearable device for dynamic pressure measurement in garments , 2010 .

[11]  C. H. Lai,et al.  Validation of the Pliance X System in measuring interface pressure generated by pressure garment. , 2009, Burns : journal of the International Society for Burn Injuries.

[12]  M. Ferguson-Pell,et al.  Evaluation of a sensor for low interface pressure applications. , 2000, Medical engineering & physics.

[13]  F. Wood,et al.  Direct measurement of cutaneous pressures generated by pressure garments. , 1997, Burns : journal of the International Society for Burn Injuries.

[14]  Sajeeda,et al.  Passive Telemetric Readout System , 2006, IEEE Sensors Journal.

[15]  M. Fonseca,et al.  FLEXIBLE WIRELESS PASSIVE PRESSURE SENSORS FOR BIOMEDICAL APPLICATONS , 2006 .

[16]  Y. Tai,et al.  Wireless Intraocular Pressure Sensing Using Microfabricated Minimally Invasive Flexible-Coiled LC Sensor Implant , 2010, Journal of Microelectromechanical Systems.