Abstract Progress in the fibre optic technology spurred development of optical fibre-based sensors. A successful optics-based element for sensorial systems is Bragg grating. It allows to read measured value by spectral shift light, which variable with a good potential accurate measurement. Various types interrogation light spectrum reflected from measuring grating are discussed this article and...

OBJECTIVES The purpose of this study was to evaluate remote pacemaker interrogation for the earlier diagnosis of clinically actionable events compared with traditional transtelephonic monitoring and routine in-person evaluation. BACKGROUND Pacemaker patient follow-up procedures have evolved from evaluating devices with little programmability and diagnostic information solely in person to tran...

Previous work has demonstrated the correlation of periorbital perfusion and stress levels in human beings. It has also been suggested that periorbital perfusion can be quantified through processing of thermal video. The idea has been based on the fact that skin temperature is heavily modulated by superficial blood perfusion. Proof of this concept was established for two different types of stres...

Introduction: Fibre Bragg gratings (FBGs) have proved themselves as the ideal candidates for measuring strain and temperature in smart structures, civil engineering or other harsh environments. The advantages of the FBG sensor over conventional electrical sensors include small size, light weight, immunity to electromagnetic interference, low cost and other inherent advantages of fibre-optic sen...

The super-resolution PIV based on the recursive division of interrogation window has attracted interest recently. This approach needs careful error checks because results are largely affected by the pre-step displacements obtained by large interrogation windows. Hart (2000 Experiments in Fluids Vol.29-1) proposed the error check method by multiplication between correlation distributions of over...

Recently, radio frequency identification (RFID) have created emerging applications for tracking, sensing, and identifying various targets in wide-ranging areas such as supply chain, transportation, airline baggage handling, medical and biological industry, and homeland security. RFID systems with a variety of radio frequencies and techniques have been introduced. Among them, ultra-high frequenc...