热释电双波长光纤测温仪的精度分析  

Temperature measurement accuracy of a practical dual-wavelength temperature measurement system using pyroelectric detector

作　　者：施德恒[1] 余本海[1] 刘玉芳[2] 孙金锋[2] 朱遵略[2] 

机构地区：[1]信阳师范学院物理电子工程学院,河南信阳464000 [2]河南师范大学物理与信息工程学院,河南新乡453007

出　　处：《光学技术》2006年第3期356-360,共5页Optical Technique

基　　金：国家自然科学基金(60577050);河南省自然科学基础研究计划(03140031);河南省自然科学基金(0511014300)

摘　　要：在介绍一种利用钽酸锂热释电探测器实现的实用化双波长光纤测温仪的基础上,着重讨论了反射辐射、探测器周围环境的热辐射、仪器工作波长的带宽,以及光路中选择性吸收气体的光谱吸收等多种因素对仪器测温精度的影响,并提出了相应的抑制措施。实验表明,采取相应的抗干扰措施后,在系统要求的测温范围400—1360℃内,其测温精度符合设计要求。After introducing a practical dual-wavelength fiber-optic colorimeter using LiTaO3 pyroelectnc detector, the effeet and control on texnperature measurement accuracy were divulged by reflection radiation, radiation from the surrounding of the detector system, the bandwidth of working wavelengths, and selection-absorption gases in optical paths. Some necessary calculations and analyses were given. Experimental results show that the temperature measurement accuracy is suitable for the requirements at 400-1360℃ after having taken above-mentioned measure.

关 键 词：计量学 辐射测温 双波长 热释电探测器 光纤 光谱发射率 

分 类 号：TB942[一般工业技术—计量学]