FBG-BASED TORSION SENSOR DEVICE

• Main Authors: KIM, Jun Sik, KANG, Kyumin, YOU, Bum-Jae, JANG, Min Su, KIM, Jinseok, YANG, Sungwook
• Format: Patent
• Language: English; French; Korean
• Published: 16.01.2020
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

Embodiments relate to a torsion sensor device which measures a degree of torsion of a measurement object by using a fiber Bragg gratings (FBG) sensor, the sensor device comprising: an FBG sensor including a sensing unit formed in one section of an elongated optical fiber; and a fixing device for fixing and supporting the FBG sensor to cause displacement of the FBG sensor according to motion of the measurement object, wherein the fixing device includes a bending prevention member to enable the sensing unit to have torsion displacement without bending displacement, according to the motion of the measurement object. La présente invention concerne, selon des modes de réalisation, un dispositif de capteur de torsion qui mesure un degré de torsion d'un objet de mesure à l'aide d'un capteur à réseau de Bragg à fibres (FBG), ledit dispositif de capteur comprenant : un capteur FBG comprenant une unité de détection formée dans une section d'une fibre optique allongée ; et un dispositif de fixation destiné à fixer et supporter le capteur FBG afin de provoquer un déplacement du capteur FBG en fonction du mouvement de l'objet de mesure, le dispositif de fixation comprenant un élément de prévention de flexion qui permet à l'unité de détection d'avoir un déplacement de torsion sans déplacement de flexion, sur la base du mouvement de l'objet de mesure. 실시예들은 길게 연장된 광섬유의 일부 구간에 형성된 센싱부를 포함하는 FBG 센서 및 상기 측정 대상의 움직임에 따라 상기 FBG 센서의 변위를 일으키도록 상기 FBG 센서를 고정 지지하는 고정 장치를 포함하며, 상기 고정 장치는: 상기 측정 대상의 움직임에 따라 상기 센싱부가 굽힘 변위 없이 비틀림 변위를 일으키도록 하는 굽힘 방지 부재를 포함하는, FBG (Fiber bragg gratings) 센서를 이용해 측정 대상의 비틀림 정도를 측정하는 비틀림 센서 장치에 관련된다.