【摘要】 细径形状传感器在医学上有多种潜在的应用,如乳腺肿瘤胸部穿刺针的定位、肠道内窥镜的形状显示、心脏血管导管的定位等,其形状重建和末端定位精度一直是研究者关心的主要问题之一。由于有基材传感器的弯曲曲率受限,且传感器直径受基材直径的限制,本文封装了一根无基材传感器,总长220mm,直径为1. 5mm,4根光纤布喇格光栅绕中心互成90°分布。通过在波分复用的基础上添加光时分复用来改进传感网络布置,提高测量精度;实验结果表明,该FBG形状传感器的测量精度为2. 86%。更多还原

【Abstract】 The small-diameter shape sensor has many potential applications in medicine,such as the positioning of breast tumor chest needle,the shape display of intestinal endoscope,the positioning of cardiac vascular catheter,etc. Its shape reconstruction and end positioning accuracy have always been the concern of researchers. One of the main problems. Due to the limited bending curvature of the substrate sensor and the diameter of the sensor is limited by the diameter of the substrate,this paper encapsulates a substrateless sensor with a total length of 220 mm and a diameter of 1. 5 mm. Four fiber Bragg gratings are formed around the center. 90° distribution. The optical network time division multiplexing is added on the basis of wavelength division multiplexing to improve the sensor network layout and improve the measurement accuracy. The experimental results show that the measurement accuracy of the FBG shape sensor is 2. 86%.更多还原