Abstract
Wireless inductive sensors have been deployed in the position and displacement sensing for a wide variety of applications ranging from manufacturing processes, medical systems, automotive, and aerospace industries, to civil infrastructures. Here, we propose and experimentally demonstrate an ultrasensitive wireless displacement sensing technique based on the concept of parity-time (PT) symmetry or space-time reflection symmetry, first explored in quantum mechanics and later extended to wave physics. This PT-symmetric telemetric sensing system comprises an active -RLC tank (stationary reader) and a passive RLC tank (movable tag), which are linked in a wireless manner via inductive coupling. Specifically, such a non-Hermitian electronic system obeying the PT symmetry, when operated around the exceptional point (EP), can achieve drastic frequency responses and high sensitivity, well beyond the limit of conventional fully passive wireless displacement sensors. The proposed telemetric sensing system shows great potential for contactless, high-precision measurement of displacement, lift-off distance, position, and vibration, particularly suitable for emerging industrial and healthcare Internet-of-Things (IoTs).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
