杨远洪, 段纬倩, 高丽娟. 反射型保偏光纤温度传感器现场校准方法[J]. 红外与激光工程, 2012, 41(8): 2107-2111.
引用本文: 杨远洪, 段纬倩, 高丽娟. 反射型保偏光纤温度传感器现场校准方法[J]. 红外与激光工程, 2012, 41(8): 2107-2111.
Yang Yuanhong, Duan Weiqian, Gao Lijuan. Field calibration method for the reflection type polarization maintain optic fiber temperature sensor[J]. Infrared and Laser Engineering, 2012, 41(8): 2107-2111.
Citation: Yang Yuanhong, Duan Weiqian, Gao Lijuan. Field calibration method for the reflection type polarization maintain optic fiber temperature sensor[J]. Infrared and Laser Engineering, 2012, 41(8): 2107-2111.

反射型保偏光纤温度传感器现场校准方法

Field calibration method for the reflection type polarization maintain optic fiber temperature sensor

  • 摘要: 设计了一种反射型保偏光纤温度传感器,介绍了其原理并给出了传感方程。分析表明:光路 传输损耗变化是引起传感方程参数变化的主要原因,在需要重装光路的应用场合,需要对传感方程参 数进行现场校准。结合输出信号和传感方程系数的特点和关系,将传输损耗与传感器本征参数分离, 提出了一种简单实用的现场校准技术并建立了计算模型。采用该技术,在校准时只要给出传感头所处 位置的一点温度值便可实现传感方程所有参数的校准。搭建了实验系统,通过改变光路传输损耗进行 了校准实验,分别采用曲线拟合和模型计算方法进行了数据分析和对比,对该方法进行了验证。实验 表明,在-30耀60益的温度范围内,校准前后温度传感器的精度均可达上下0.5 ℃ 。

     

    Abstract: Areflectiontypepolarizationmaintainopticalfibertemperaturesensorwasdesigned.The operationprinciplewasintroducedandthesensingequationwasgiven.Analysisindicatedthatthe propagationlossvarietywasthemainfactorwhichmadesensingequationparameterschange.So,inthe applicationfieldwheretheopticalpathstructureofsensormightbere-assembled,theparameters calibrationwasnecessary.Basedonthecharacteristicandtherelationofsensoropticalsectionoutput signalandthesensingequationparameters,thepropagationlosscouldbeseparatedfromthesensor initializationparametersandasimpleandpracticalfieldcalibrationmethod,withwhichthewholesensing equationparameterscouldbecalibratedwhenthetemperatureatthesensorprobewasgiven,was proposedandthecalculationequationwasestablished.Anexperimentalsensorsystemwasbuiltandthe calibrationexperimentsweremadebychangingthepropagationloss.Thedateobtainedwereanalyzed andcomparedwithpolynomialfittingandmodelcalculation.Theresultprovesthefieldcalibration technologyandthesensingtemperatureprecisioncanbebetterthanupanddown0.5℃beforeandaftercalibration.

     

/

返回文章
返回