Adrian Mariampillai,Peter Siegler,Michael Leung,Beau Anthony Standish,Victor X. D. Yang
申请号：
US15562249
公开号：
US10143523B2
申请日:
2016.03.31
申请国别(地区):
US
年份:
2018
代理人:
摘要：
Systems, methods and devices are provided for calibrating a flexible implement that employs fiber Bragg gratings (FBGs) for shape sensing. In some embodiments, methods and devices are provided for determining the longitudinal location of a FBG within an optical fiber that is employed for shape sensing. In other embodiments, methods and devices are employed for the determination of calibration parameters that relate the measured wavelength shift of a set of FBGs to the curvature at the location within the flexible implement where the set of FBGs resides. Various calibration devices are disclosed that employ guiding features for bending the flexible portion of the flexible implement along known curved profiles. In some embodiments, keyed features are incorporated into the flexible implement and the calibration device, such that the flexible implement is inserted into the device in a known orientation. In some embodiments, the flexible implement may incorporate a strain isolation mechanism.
