PHOTONIC SENSOR

Photonic sensor for Human's Body Vital Sign Detection

ABSTRACT

In current years, photonic sensors are becoming more and more attractive for human body vital signs detection. The most common form of photonic sensor is fiber Bragg grating (FBG), which is commonly used for applications of sensing, in rehabilitation and biomechanics engineering. The reason for worldwide acceptance of this photonic sensor is its various properties such as lightweight, small size, chemical inertness, biocompatibility, immunity for multiplexing capacity and electromagnetic interference. In addition, these sensors offer higher performance substitute to modern technologies, either for the measurement of physical factors of for carrying out high sensitivity analysis of biochemical elements. These sensors showed feasibility sensing applications in automotive, civil, and aeronautic engineering, however, their utilization in the field of rehabilitation, biomechanics is very recent, and its expediency for full-scale execution has not yet been completely established. They could be utilized for detecting pain in bones, mapping of pressure in orthopedic joints, pain in intervertebal discs, deformation of chest wall, distribution of pressure in Human Machine Interfaces (HMIs), angles between segments of body during gait, forces that are induced by ligaments and tendons. This paper aims to provide a complete summary of all doable applications of Photonic sensor for human's body vital sign detection.

INTRODUCTION1

METHODS FOR BODY SIGN MONITORING2

FIBER BRAG SENSOR3

Working Principles of Fiber Brag Sensor3

APPLICATIONS OF FIBER BRAG SENSOR IN HUMAN'S BODY VITAL SIGN DETECTION5

Body temperature and FBG Sensor5

Respiratory Fiber Brag Sensor6

Bone7

Bone Cement9

REFERENCES14

Introduction

In last decade, photonic sensors have shown a better potential for applications of human is body vital sign detection, because of their prominent benefits like small size, chemical inertness, biocompatibility etc. The characteristics of fiber Bragg gratings (FBGs) and infrared sensors make these technologies suitable for the use of human body that get used to of the sensor objects in order that they can be utilised for vital sign detection and can be left for permanent monitoring (Narbonneau, 2009, p. 60). These photonic sensors also provide higher-performance substitute, in contrast to ordinary technologies such as piezoelectric, electrical strain gauge (ESG), solid-state sensing, either for carrying out high sensitive analysis of biochemical and for measuring physical factors. At present, photonic sensors are largely used for human's body vital signs detection, in order to measure different parameters like force, strain, displacement, pressure, radiation dose, humidity, temperature and displacement. The study of photonic sensors have been showed for measurement of a large range of parameters; comprising strain on the surface and inside plated and intact bones, reduced stresses in bone cement at the time of polymerization, stresses in intervertebral discs, mapping of pressure in orthopaedic joints, deformation in wall of chest in order to study biomechanics of lungs, distribution of pressure in Human Machine Interfaces (HMIs). As far as we know, only two papers have partially described the general applications of photonic sensors in human's body vital sign detection, but they did not completely mention all the previously reported and the new applications of photonic sensors in the field of rehabilitation and biomechanics engineering (Dziuda, 2011, ...