不同参数对激光诱导磷光测温技术的影响  

Influence of Laser Energy and Phosphorescent Coating Parameters on Laser-Induced Phosphorescence Temperature Measurement Technology

作　　者：谢思瑜 李铁[1,2] 黄帅 马鹏飞[1] 依平 XIE Siyu;LI Tie;HUANG Shuai;MA Pengfei;YI Ping(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 201100,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 201100,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海201100 [2]高新船舶与深海开发装备协同创新中心,上海201100

出　　处：《内燃机工程》2021年第1期102-108,共7页Chinese Internal Combustion Engine Engineering

基　　金：上海市科技创新行动计划政府间国际科技合作项目(17590711000)。

摘　　要：通过构建基于CMOS高速成像的二维激光诱导磷光测温系统,进行了测温标定试验,研究了激光能量、磷光剂混合比、磷光剂涂层厚度对Mg 3F 2GeO 4:Mn(MFG)磷光衰减时间的影响。结果表明,当温度超过磷光淬灭温度后,随着涂层厚度增加,MFG磷光衰减时间增加,衰减时间的差异随温度升高而增大;激发光能量在0.3 mJ~11.0 mJ范围内均能激发出MFG磷光,能量大小对磷光衰减时间影响较小;MFG磷光剂混合比对衰减时间影响较小。适当稀释的磷光剂在低温下对激光的响应快,高温下存在时间长,适合燃烧室复杂环境中的温度测量。The CMOS high-speed photography was used to build a two-dimensional laser-induced phosphorescence temperature measurement system,and a calibration experiment was conducted.The effects of laser energy,mixing ratio between MFG and binder and coating thickness on the decay time of Mg 3F 2GeO 4:Mn(MFG)were studied.The results show that when the temperature of coating exceeds the quenching point,the MFG decay period extends with the coating thickness,and the difference of the MFG decay extension of different coating thicknesses enlarges with the temperature.The excitation energy in the range of 0.3~11.0 mJ can excite the MFG phosphorescence.And the level of the excitation energy has a little influence on the MFG decay time,so dose the MFG mixing ratio.However,a properly diluted MFG responds quickly at low temperatures and exists longer at high temperatures.This is a preferred feature for the temperature measurement in complex environments like combustion chamber.

关 键 词：磷光测温技术 CMOS高速成像 激光能量 涂层厚度 混合比 

分 类 号：TK311[动力工程及工程热物理—热能工程]