摘要
基于锥形分速装置,研制了一种光纤Bragg光栅(FBG)流速传感器。利用FBG压强传感机构进行传感信号解调,同时利用开关控制流速管不同开孔的开闭状况。传感器的动态感测范围可达92.5～802.3mm/s,流速检测灵敏度为0.4mm/s,并且对温度不敏感。优化FBG压强传感机构及流速管的相关参量,能够进一步提高传感装置的灵敏度和精确度,并可望拓展流速的测量范围。
A fiber Bragg gratings （FBG） flow sensor is designed and developed, which is based on cone shunt devices. And the fiber Bragg grating pressure sensor is used for signal demodulation. At the same time the switch is used to control different flow tube openings opening and closing situations. The sensor is very sensible to the flow velocity,and very stable. The measuring range is 92.5-802.3 mm/s,the sensor can detect the change of the flow velocity as low as 0. 4 mm/s,and it is insensitive to temperature. By optimizing the parameters of the sensor,the sensitivity and accuracy can be improved,and the measuring range may be expanded.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2011年第10期1463-1466,共4页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(10974100,10674075,60577018,60736039,10904075)
天津市应用基础与前沿技术研究计划重点资助项目(10JCZDJC24300)
光学信息科学技术教育部重点实验室资助项目
