2023年第1期一种用于低温超导体监测的单接收机分布式单模光纤测温系统SinglereceiverdistributedsinglemodeopticalfibertemperaturemeasuringsystemforlowtemperaturesuperconductormonitoringLIUChangxia,LIJian（ShanghaiBaiantekSensingTechnologyCo.,Ltd.,Shanghai200120,China）Abstract:IInordertosolvetheproblemsoflargemeasurementerrorsandlowpositioningaccuracycausedbytimechangesinconventionaltemperaturemeasuringsystemwithdualreceivermechanism,adistributedsingle-modeopticalfibertemperaturemeasuringsystemwithsinglereceiverforlow-temperaturesuperconductormonitoringisdesigned.Thesystemadoptssinglere-ceiverandanti-polarizationmethods,whichcanrealizerapidtemperaturemeasurementoflow-temperaturesuperconductorwithhighpositioningaccuracy.Accordingtothesystemdesignscheme,themeasuringexperimentsystemoftemperaturemeasure-mentaccuracyandpositioningaccuracyissetup,andthelowtemperaturesuperconductivityistestedandanalyzedinliquidni-trogen.Theexperimentalresultsshowthatwhentheopticalfiberisintheliquidnitrogenregionof-196℃,theaveragetempera-turemeasuredis-193℃,thetemperatureresolutionis0.1℃,thetemperaturemeasurementaccuracyis±3℃,thepositioningaccuracyis0.4m,andthetemperaturemeasurementtimeis100ms.Keywords:lowtemperaturesuperconductivity,singlereceiver,highpositioningaccuracy,distributedsensing刘昌霞，李健（上海拜安传感技术有限公司，上海200120）摘要：为了解决常规测温系统采用双接收机机制时随时间变化导致测量误差大和定位精度低的问题，设计了一种用于低温超导体监测的单接收机分布式单模光纤测温系统，系统采用单接收机和抗偏振等方式，可实现对低温超导体快速、高定位精度的温度测量。根据系统设计方案搭建了温度测量精度、定位精度的测量实验系统，并在液氮下对低温超导进行了测试与分析。实验结果表明：当光纤处于-196℃的液氮区域时，测得平均温度为-193℃，温度分辨率为0.1℃，测温精度为±3℃，定位精度为0.4m，测温时间为100ms。关键词：低温超导；单接收机；高定位精度；分布式传感中图分类号：TN253文献标志码：A文章编号：1002-5561（2023）01-0086-04DOI：10.13921/j.cnki.issn1002-5561.2023.01.016开放科学（资源服务）标识码（OSID）：...
