标题：Study of a Coupling Fiber-optic Sensor for Vibration Measurement
作者：Xu, Jian; Ma, Bin
作者机构：[Xu, Jian] Shandong Univ Finance, Sch Comp & Informat Engn, Jinan 250014, Shandong, Peoples R China.; [Ma, Bin] Shandong Univ Polit Sci & Law, Dept 更多
会议名称：8th World Congress on Intelligent Control and Automation (WCICA)
会议日期：JUL 06-09, 2010
来源：2010 8TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION (WCICA)
关键词：fiber optics; mode coupling; fused biconical tapered; coupling output;; vibration measurement
摘要：A new kind of coupling fiber-optic vibration sensor is presented base on the principle of fiber-optic coupler's coupling output is sensitive to the variation of coupling region's length. A prototype fiber optic vibration detection system has been successfully developed, including a sensor head, a low-cost control unit and a software package for signal processing with high resolution. The response of a simply supported beam when imposed with periodic vibration and shock is measured with fiber-optic sensor and piezoelectric sensor; close agreement is obtained between the response of fiber-optic sensor and high precision piezoelectric sensor. Experimental results indicate that the fiber-optic coupling sensor is an ideal candidate for a simple and highly precision vibration sensor.