测辐射热计探测器中温度场有限元计算分析  

FINITE ELEMENT ANALYSIS OF THE TEMPERATURE FIELD IN BOLOMETER DETECTORS

作　　者：顾文韵[1] 皮德富[1] 周士源[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《兵工学报》2002年第1期109-111,共3页Acta Armamentarii

摘　　要：本文主要介绍用有限元数值分析的方法对非致冷红外测辐射热计探测器的温度分布进行计算 ,其有限元模型可以对测辐射热计探测器热敏层表面的稳态和瞬态温度场进行仿真。主要通过对探测器敏感层温度场的计算 ,考虑探测器结构尺寸对其性能参数的影响 ,起到优化设计的作用。仿真结果分析证明了热绝缘结构在探测器设计中是占有重要地位的 ,同时说明本文所做工作是有意义的。经大量运算 ,与有关数据进行对比分析 ,计算结果准确可靠。The temperature distribution on an uncooled infrared bolometer detector is computed using the finite element numerical method. The introduced model can simulate both the steady state and the transient temperature field of the top surface of the thermal sensitive layer on a bolometer detector. By computing chiefly the temperature field on the sensitive film of the detector, the influence of different sizes of detector constructions upon some performance parameters is analyzed to optimize the design of a bolometer detector. Analysis of the simulation result attests that the thermal isolation structure is important in the design of a bolometer detector thus endorsing the present work. Compared with data in relevant literature, the program is validated correct and accurate.

关 键 词：测辐射热计 有限元 温度场 热传导 热探测器 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]