传感技术学报2017，Vol.30Issue(2)：200-205,6.DOI:10.3969/j.issn.1004-1699.2017.02.006
光纤振动传感系统相位调制模块的嵌入式设计
Embedded Design of Phase Modulation Module forOptical Fiber Vibration Sensing System
摘要
Abstract
In order to solve the problem of a lack of portable vibration signal driving device for the test and calibration of optical fiber vibration sensing system,a PZT phase modulation module based on FreeRTOS and STemWin embedded system is proposed in this paper.In this module,STM32 is utilized as the embedded microcontroller and the H bridge power driver is designed to amplify the signal.Multi-task functional component is developed in FreeRTOS embedded operating system and the STemWin graphical user interface is designed,a distributed optical fiber vibration sensing system is then constructed to test the embedded phase modulation module.The experimental results show that the frequency adjustment,duty cycle,output polarity and voltage of the driving signal can be realized by the proposed module.Over a total fiber length of 11.769 km,the shock signal is acquired in real time and the positioning error of vibration signal is within the range of 41 m,which can meet the needs of test and calibration for all kinds of optical fiber vibration sensing system at different positions in a long distance.关键词
光纤传感/振动检测/嵌入式系统/相位调制Key words
optical fiber sensing/vibration detection/embedded system/phase modulation分类
信息技术与安全科学引用本文复制引用
吴瑞东,王宇,王东,谭晋隆,刘昕,靳宝全..光纤振动传感系统相位调制模块的嵌入式设计[J].传感技术学报,2017,30(2):200-205,6.基金项目
山西省回国留学人员科研项目(2016-035) （2016-035）
国家自然科学基金项目(51375327 （）
51504161) （）
山西省煤基重点科技攻关项目(MQ2014-09) （MQ2014-09）
