中文摘要：

根据集成发光二极管（LED）的微热管尺寸小、温升快、温度梯度变化剧烈等特点,搭建了非接触式红外测温系统,以实现对其不同特征区域的温度测量。对该系统的信号采集与转换、误差分析与补偿、测温特性指标、以及微热管的热性能进行了研究。该系统通过LabVIEW编程软件实现红外传感器的电信号采集与温度转换;将不同温度的加热块作为等温体参考,对比热电偶与红外测温结果完成静态和动态测温特性分析,进而通过环境温度补偿方法修正LED辐射热引起的传感器漂移误差;最后基于线性拟合法完成传感器的校准。利用该测试系统在不同热负载下测试了微热管的热性能。结果显示：测温系统的准确度、重复性及线性度分别为1.2-1.5℃、1%和0.2%;时间常数T和响应时间t0.05分别约为15ms和30ms。该红外非接触测温系统能够减小传感元件对被测温度场的影响,具有测温精度高和热惰性小的特点,为微热管热性能评估提供了新的测量方法。

英文摘要：

According to the characteristics of Micro Heat Pipe（MHP）in an integrated Light Emitting Diode（LED）on small sizes,fast temperature rising and temperature change,as well temperature gradient,a non-contact infrared temperature measurement system was conducted to measure the temperature of different feature regions of th MHP integrated with LED chips.The signal acquisition and conversion,error analysis and compensation,characteristic indexes of temperature measuring and heat performance experiments of the MHP were investigated.Electrical signal acquisition and temperature conversion were implemented through LabVIEW programming.Then,the heating blocks with differ-ent temperatures were considered as isothermal reference bodies,and the measuring results of the infrared sensors and the thermocouples were compared and analyzed for static and dynamic temperature measurement characteristics.The drift error resulting from LED radiant heat was corrected by environment temperature compensation,and infrared sensors were calibrated by linear fitting.Finally,the heat performance of MHP under different heat loads were measured by proposed measuring system.Experimental results indicate that the accuracy,repeatability and the linearity of the system are 1.2-1.5 ℃,1% and 0.2%,respectively,while the time constant and the response time are 15 ms and 30 ms,respectively.The Infrared measuring reduces the effects of sensor elements on temperature distribution of feature areas,and is characterized by high temperature measurement precision and small thermal inertia.It provides a new measuring method for the evaluation of heat performance of MHPs.