Research on Pressure Tactile Sensing Technology Based on Fiber Bragg Grating Array

• 作者: Hongbin LIU Jinxue SONG Qi JIANG Rui SONG Xuewen RONG Yibin LI Yuanyang HUANG Yuxi JIA
• 来源期刊: 光子传感器:英文版
• 学科: 工学
• 关键词: 触觉传感器 传感器阵列 光纤光栅 外部压力 传感技术 光纤布拉格光栅 数值模拟 ANSYS
• 年，卷（期）: 2015,（3）
• 页码范围: 263-272
• 页数: 10页
• 分类号: TP212
• 语种: 中文

摘要

A pressure tactile sensor based on the fiber Bragg grating (FBG) array is introduced in this paper, and the numerical simulation of its elastic body was implemented by finite element software (ANSYS). On the basis of simulation, fiber Bragg grating strings were implanted in flexible silicone to realize the sensor fabrication process, and a testing system was built. A series of calibration tests were done via the high precision universal press machine. The tactile sensor array perceived external pressure, which is demodulated by the fiber grating demodulation instrument, and three-dimension pictures were programmed to display visually the position and size. At the same time, a dynamic contact experiment of the sensor was conducted for simulating robot encountering other objects in the unknown environment. The experimental results show that the sensor has good linearity, repeatability, and has the good effect of dynamic response, and its pressure sensitivity was 0.03 nm/N In addition, the sensor also has advantages of anti-electromagnetic interference, good flexibility, simple structure, low cost and so on, which is expected to be used in the wearable artificial skin in the future.