便携式高速多光谱辐射测温仪的研制

李梦奇; 杨明庆; 牛春晖; 刘大通

doi:doi:10.7510/jgjs.issn.1001-3806.2023.04.014

激光技术, 2023, 47 (4): 534, 网络出版: 2023-12-11

便携式高速多光谱辐射测温仪的研制

Development of portable high-speed multi-spectral radiation thermometer

论文大纲

李梦奇杨明庆牛春晖 ^*刘大通

作者单位

北京信息科技大学仪器科学与光电工程学院,北京 100192

摘要

为了解决传统多光谱辐射测温仪便携性差和无法测量瞬变温度的问题,采用分光光纤和带通滤光片的分光方法,设计了高速光电响应电路,研制了一台便携式高速多光谱辐射测温仪。结果表明,使用光纤和带通滤光片代替传统的棱镜分光,并与其它硬件封装在一起,可降低系统的复杂度,提高仪器的便携性,组装后仪器总体质量不大于4 kg,体积不大于30 cm×25 cm×25 cm;设计高带宽的光电转换电路并使用高速模数转换芯片、现场可编程门阵列芯片及CYUSB3014芯片进行数字信号的采集和传输,与计算机的通信速率高达100 MHz,使得测温仪能够测量微秒级变化的温度;在参考温度稳定的情况下,测温相对误差低于±2.5%,测温精度较高。这些结果对于提高测温仪的便携性和实现瞬变温度场高精度测温是有帮助的。

Abstract

In order to solve the problems of poor portability and inability to measure transient temperature of traditional multi-spectral radiation thermometers, a portable high-speed multi-spectral radiation thermometer was developed by adopting the spectroscopic method of splitting fiber+band-pass filter, and a high-speed photoelectric response circuit was designed. The results show that, the complexity of the system can be effectively reduced and the portability can be improved by using optical fiber and band-pass filter to replace the traditional prism and package it with other hardware of the thermometer. After assembly, the overall mass of the instrument is not more than 4 kg, and the volume is not more than 30 cm×25 cm×25 cm. The photoelectric conversion circuit with high bandwidth was designed, and the high-speed analog digital conversion chip, field-programmable gate array chip and CYUSB3014 chip were used for digital signal acquisition and transmission. The communication rate with the computer is up to 100 MHz, so that the thermometer can measure the temperature with microsecond change. The actual temperature measurement results of muffle furnace temperature after calibration show that the overall relative error of the thermometer is less than ±2.5% and the temperature measurement accuracy is high when the reference temperature is stable. This result is helpful to improve the portability of the thermometer and realize the high-precision temperature measurement of transient temperature field.

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李梦奇, 杨明庆, 牛春晖, 刘大通. 便携式高速多光谱辐射测温仪的研制[J]. 激光技术, 2023, 47(4): 534. LI Mengqi, YANG Mingqing, NIU Chunhui, LIU Datong. Development of portable high-speed multi-spectral radiation thermometer[J]. Laser Technology, 2023, 47(4): 534.

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