一种阵列式探空温度传感器设计  

Design of an Array-Based Sounding Temperature Sensor

作　　者：周悦 刘清惓 杨杰[3,4] 戴伟[3,4] 余寅 

机构地区：[1]江苏省大气环境与装备技术协同创新中心,南京210044 [2]江苏省气象探测与信息处理重点实验室,南京210044 [3]南京信息工程大学,中国气象局气溶胶与云降水重点开放实验室,南京210044 [4]南京信息工程大学大气物理学院,南京210044

出　　处：《传感技术学报》2016年第8期1297-1304,共8页Chinese Journal of Sensors and Actuators

基　　金：国家公益性行业(气象)科研专项项目(GYHY200906037,GYHY201306079);国家自然科学基金项目(41275042);江苏高校优势学科建设工程(“传感网与现代气象装备”项目)(KYLX15_0866)

摘　　要：为降低传统探空温度传感器的横梁尾流热污染误差,设计了一种基于热电偶阵列的探空温度传感器。该传感器由铂电阻,四个热电偶组成的阵列,高精度测量电路等部分组成。采用计算流体动力学（CFD）软件FLUENT对探空温度传感器进行数值分析仿真计算。搭建了一套高空环境模拟实验装置。实验结果表明,使用阵列式热电偶作为探空温度传感器,可将横梁热辐射误差降低至横梁升温量的0.43%~8.72%,实验测量结果与仿真结果相差-3.02%~5.44%,吻合度较高。阵列式低辐射误差探空温度传感器和传统探空温度传感器相比,降低了横梁尾流在上升过程中对传感器探头的影响,具有较低的辐射误差。In order to minimize measurement error induced by heated air flow,commonly named as＂heat contamina？tion＂,an array-based sounding temperature sensor,that consists of platinum resistance thermometer,an array of four thermocouples and a precision measurement circuit,is proposed. FLUENT,a computational fluid dynamics（CFD） software,is employed to perform numerical simulation of the sensor. A low-air-pressure experiment platform is con？structed to simulate high altitude environment. Experimental results indicate that the solar radiation error resulted from the heat contamination considerably will decrease to 0.43%~8.72% by using array of four thermocouples as sounding temperature sensor. The difference between experimental results and simulation results are-3.02%~5.44%,which shows that the experimental results agrees with the simulation results. This array-based sensor is able to reduce the error resulted from the heat contamination considerably. The sensor also features relatively small radia？tion error,compared to traditional bead thermistor sounding temperature sensors.

关 键 词：探空温度传感器 传感器阵列 高空探测 太阳辐射 计算流体动力学 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]