文章编号:1002-2082(2023)01-0128-09基于多峰高斯拟合的分布式拉曼测温系统设计与应用张均1,杜超1,于昌智1,张丽1,邓霄1,2(1.太原理工大学物理与光电工程学院,太原030024;2.太原理工大学新型传感器与智能控制教育部与山西省重点实验室,太原030024)摘要:针对温感区域长度小于空间分辨率导致温度测量不准确的问题,提出一种多点温度校正方案,并介绍了一种可应用于中小尺度剖面温度分布测量的装置和方法。采用基于多峰高斯拟合的方案,实现了多个测量不准确温度点的同时校正,提高了系统的温度准确度,设计了分布式拉曼测温系统样机,通过将光纤部分缠绕在PPR管上实现了中小尺度剖面温度分布测量。实验装置使2m和1.5m温感区域的测量准确度提高到1℃;测得冬季黄河万家寨水库冰盖厚度约为42.33cm,与人工测量结果相差约为1.67cm;测得36m深河水剖面的温度约在0.32℃~0.90℃范围内波动。实验结果表明,采用该分布式拉曼测温系统能够在野外大范围监测河道流水剖面的温度分布。关键词:分布式拉曼;多点温度校正方案;冰盖剖面温度;河水剖面温度中图分类号:TN206文献标志码:ADOI:10.5768/JAO202344.0103003DesignandapplicationofdistributedRamanthermometrysystembasedonmulti-modalGaussianfittingZHANGJun1,DUChao1,YUChangzhi1,ZHANGLi1,DENGXiao1,2(1.CollegeofPhysicsandOptoelectronics,TaiyuanUniversityofTechnology,Taiyuan030024,China;2.KeyLaboratoryofAdvancedTransducersandIntelligentControlSystem(MinistryofEducation),TaiyuanUniversityofTechnology,Taiyuan030024,China)Abstract:Aimingattheproblemthatthelengthofthetemperaturesensingareaissmallerthanthespatialresolution,whichleadstoinaccuratetemperaturemeasurement,amulti-pointtemperaturecorrectionschemewasproposed,andadeviceandmethodthatcouldbeappliedtothemeasurementoftemperaturedistributioninmediumandsmallscalesectionswereintroduced.Usingtheschemebasedonmulti-modalGaussianfitting,thesimultaneouscorrectionofmultipleinaccuratetemperaturepointswasrealized,andthetemperatureaccuracyofthesystemwasimproved.AprototypeofthedistributedRamanthermometrysystemwasdesigned,andthemeasurementoftemperaturedistributioninmediumandsmallscalesectionswasrealizedbywrappingthefiberaroundthePPRtube.Theexperimentaldev...