Self-Compensating Displacement Sensor Based on Hydramatic Structured Transducer and Fiber Bragg Grating

• 作者: Shimeng CHEN Yun LIU Xiuxin LIU Yang ZHANG Wei PENG
• 来源期刊: 光子传感器:英文版
• 学科: 工学
• 关键词: 光纤位移传感器 液压结构 光纤布拉格光栅 自补偿 交叉灵敏度 测量范围 测量传感器 传感器系统
• 年，卷（期）: 2015,（4）
• 页码范围: 351-356
• 页数: 6页
• 分类号: TP212
• 语种: 中文

摘要

An optical fiber displacement sensor with a large measuring range for simultaneous displacement and temperature measurement is presented in this paper. We developed a specific transducer based on the piston and hydraumatic structure to realize a large displacement measurement, which combined the large measuring range and high precision into a single sensor system. The spectrum showed two reflection peaks used to compensate for cross-sensitivity in the displacement detection. This displacement sensor can linearly work in a large measuring displacement range greater than 45 mm with a high sensitivity of 0.036nm/mm. The sensor we reported can be developed for real-time displacement monitoring in many industrial environments such as the mechanical shape or liquid level monitoring.