一种新型FBG热式液体流量传感器  

A New FBG Thermal Liquid Flow Sensor

作　　者：贾振安[1] 杨凯庆 赵显锋 白燕[1] 高宏[1] JIA Zhenan;YANG Kaiqing;ZHAO Xianfeng;BAI Yan;GAO Hong(School of Science,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学理学院,西安710065

出　　处：《光子学报》2021年第2期37-43,共7页Acta Photonica Sinica

基　　金：陕西省教育厅重点实验室科研计划(No.17JS105),西安石油大学研究生创新与实践能力培养计划(No.YCS20212128)。

摘　　要：光纤布拉格光栅热式流量传感器目前只适用于气体流量,为扩大其应用领域,设计了一种可用于液体流量测量的新型光纤布拉格光栅热式流量传感器。该光纤布拉格光栅热式流量传感器使用陶瓷加热片以恒定功率提供热量,不同流量的液体经过传感器时带走的热量不同,通过检测光纤布拉格光栅中心波长的变化就可以测得传感器的温度变化,进而推导出液体流量大小。通过温度传感测试实验和流量传感测试实验,验证了所设计的传感器可用于液体流量测量。实验结果表明,该传感器的流量测量范围为40.575~550.664 L/h。Fiber Bragg Grating(FBG)thermal flow sensors are only suitable for gas flow currently.In order to expand its application field,a new FBG thermal flow sensor that can be used for liquid flow measurement is designed.A heating ceramic sheet is used to provide heat at a constant power for the FBG thermal flow sensor.Different flow of liquid takes different heat when flow through the sensor.By detecting the change of FBG central wavelength,the temperature change of the sensor can be measured,and then the liquid flow can be deduced.Through temperature sensor test experiment and flow sensor test experiment,it is verified that the designed sensor can be used for liquid flow measurement.The experimental results show that the flow measurement range of the sensor is 40.575~550.664 L/h.

关 键 词：光纤传感 热式流量传感器 光纤布拉格光栅 液体流量 流量测量 

分 类 号：TN253[电子电信—物理电子学]