光纤法珀压力传感系统设计与风洞初步实验  

Design and preliminary experiment of optical fiber F-P pressure sensing system working in wind tunnel

作　　者：刘畅 王双[1] 梁应剑 江俊峰[1] 梅运桥 刘琨[1] 齐晓光 李鑫[1] 李元耀[3] 刘铁根[1] Liu Chang;Wang Shuang;Liang Yingjian;Jiang Junfeng;Mei Yunqiao;Liu Kun;Qi Xiaoguang;Li Xin;Li Yuanyao;Liu Tiegen(Key Laboratory of Opto-Electronics Information Technology of Ministry of Education,Institute of Optical Fiber Sensing of Tianjin University,School of Precision Instrument＆ Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China;AVIC Chengdu CAIC Electronics Co.,LTD,Chengdu 610073,China;Tianjin Institute of Metrological Supervision and Testing,Tianjin 300192,China)

机构地区：[1]天津大学精密仪器与光电子工程学院天津大学光电信息技术教育部重点实验室天津大学光纤传感研究所,天津300072 [2]中航工业成都凯天电子股份有限公司,四川成都610073 [3]天津市计量监督检测科学研究院,天津300192

出　　处：《红外与激光工程》2018年第7期280-286,共7页Infrared and Laser Engineering

基　　金：国家重大科学仪器设备开发专项(2013YQ030915);国家自然科学基金(61675152;61505139;61227011;61378043;61475114);国家973计划(2010CB327802);天津市自然科学基金(16JCQNJC02000)

摘　　要：针对航空领域对大气压力的测量需求,基于光纤法珀传感和低相干干涉技术,搭建了光纤法珀多通道压力传感系统。介绍了系统解调算法及工作原理,对光纤法珀压力传感器的标定和温度补偿方法进行理论分析,将非恒温条件下的传感器拟合误差降低至0.134%F.S.。在风洞环境中,在侧滑角-4°~4°变化范围内,对飞机实体模型的三个监测点进行压力测量实验,并将压力测量结果与Ansys-Fluent软件模拟仿真结果做对比。结果显示,光纤法珀压力传感系统与模拟仿真数据变化趋势相同,全量程误差为0.38%F.S.,证明此系统能够提供可靠的压力数据,真实反映飞机模型被监测位置在风洞中的受力情况。In order to meet the requirement of atmospheric pressure measurement in the aviation field,based on the principle of the optical fiber Fabry-Perot（F-P） sensing and low coherence interference, an optical fiber F-P multi-channel pressure sensing system was proposed. First of all, the demodulation algorithm and basic principle were introduced, the calibration method and temperature compensation of the optical fiber F-P pressure sensor were analyzed in theory. The fitting error of the sensor under non-constant temperature condition was reduced to 0.134% F.S.. Then, in the wind tunnel environment within-4°-4° sideslip angle range, the pressure measurement experiment was carried out on three monitoring points of the aircraft model. The results were compared with the simulation results using Ansys-Fluent software. In conclusion, the results show that the system using the optical fiber F-P pressure sensor and the Ansys-Fluent numerical simulation have the same trend of demodulation results, with the full range error of 0.38% F.S.. The experiments confirm that the system can provide reliable pressure data accurately and reflect the pressure of the aircraft model′s monitoring points in the wind tunnel.

关 键 词：光纤法珀 大气压力 风洞 温度补偿 数值模拟 

分 类 号：TN29[电子电信—物理电子学]