光纤黑体空腔光电高温计的研制

光纤黑体空腔光电高温计的特点是在普通光电高温计前设置黑体空腔。前呈黑体空腔的精度是此类仪表的关键问题。在生产现场测量了两种类型在线黑体空腔的温度分布，计算了其有效发射率分布，并评价了上述肢体的精度等级。该光电高温计采用＊G－51系列单片机作为信息处理单元，结果表明，性能稳定可靠。     

多波长辐射测温仪及其应用

介绍了多波长辐射温度计的研制现状，理论和应用研究以及应用前景。     

GW系列光纤高温计的工作原理及其特点

GW系列光纤高温计是一种根据黑体辐射原理 ,采用比色法 ,黑体腔 ,光纤传感探头进行高温测量的温度传感器。与目前工业生产中大量使用的由铂、铑等贵金属制造的热电偶温度计比较 ,它具有抗氧化、抗电磁干扰、耐腐蚀 ,可远距离传输 ,价格低廉等优点。是铂、铑热电偶极好的替代品 ,在工业生产中具有广泛的应用前景。介绍了GW系列光纤高温计的工作原理及特点 ,并对其在湖北双环科技股份有限公司合成氨厂的使用情况进行了经济效益比较分析。比较结果 :GW系列高温计作为工业高温计性能好 ,但价格低于铂铑热电偶 ,性价比高是铂铑工业热电偶极好的替代品 ,为企业带来可观的经济效益     

轴向温度分布测量技术研究

为了对通电加热条件下圆棒状试样轴向温度分布的快速测量,我们成功研制了具有宽温度测量范围的扫描式温度计。该装置由常规的光纤比色温度计和扫描式光学探头组成。整套装置可测量的温度范围为800~3500℃,测量精度为<1％,温度最快响应时间为10μs,扫描视角为40°,并具有光学瞄准、光纤远传、RS232外设接口、测试最高温度数字显示和温度分布曲线描绘等功能。     

基于小波阈值滤波的光纤比色测温仪的信号处理

介绍了用小波阈值滤波方法实现比色测温信号的滤波消噪.该方法基于信号和白噪声在小波变换下具有不同的特性,将含噪信号进行多尺度小波分解,采用软阈值方法将其高频部分进行量化处理,再进行重构.实验证明该方法有效去除了信号中的噪声,方便地用软件实现了比色测温信号的处理,提高了系统的测温精度.     

Development of a Special Multi-Wavelength Pyrometer for Temperature Distribution Measurements in Rocket Engines

Previously a fast multi-wavelength pyrometer was developed in a collaboration between the Harbin Institute of Technology of China and Rome University of Italy. The main features of the instrument include the use of a dispersing prism and a photodiode array to cover the entire spectral band. Following this experience, a new type of six-target eight-wavelength pyrometer for solid propellant rocket engine plume temperature distribution measurements has been developed. The instrument can record the radiation fluxes of eight wavelengths for six different uniformly distributed points on the target surface, which are well defined by holes on a field stop. The fast pyrometer with a specially designed synchronous data acquisition system can assure that the recorded thermal radiation fluxes of different spectral regions are at the same time and the same true temperature, even with dramatically changed targets.     

Surface temperature measurements on burning materials using an infrared pyrometer: accounting for emissivity and reflection of external radiation

This paper demonstrates the successful use of an infrared pyrometer, operating in the 8–10 µm wavelength band, to measure the surface temperature of combustible specimens in a heat release calorimeter. The temperature histories of ten different materials were measured in the ICAL (intermediate scale calorimeter). The set of materials comprised four wood products, gypsum board, polyisocyanurate foam, PVC floor tile, PMMA and two non‐combustible boards. A small‐diameter bare thermocouple was installed on each specimen in order to determine an accurate temperature for comparison. The spectral emissivity and the spectral flux reflected from the surface were measured simultaneously and used to correct the apparent temperature measured by the pyrometer. The spectral emissivity and reflected spectral flux were both constant prior to ignition for all the combustible materials. During the burning phase all the combustible materials had a spectral emissivity very close to unity. The agreement between the temperatures measured with the pyrometer and thermocouple was not affected by the flame. The wood products, the polyisocyanurate foam and the calcium silicate board required no correction for reflected spectral flux over the whole temperature range. Copyright © 2004 John Wiley & Sons, Ltd.     

一种红外温度计的分度新技术

提出了一种与真温有关的分度红外温度计的新方法。该方法把温度计对准材料样品而不是黑体进行分度，其特点是避免了光谱发射率的修正和不要求温度计探测器的光谱响应度的数据，因而具有很大的实用价值。此方法对于工业测温中的重复测量特别有效。     

Error analysis of a ratio pyrometer by numerical simulation

A numerical method has been devised to evaluate measurement errors for a three-channel ratio pyrometer as a function of temperature. The pyrometer is simulated by computer codes, which can be used to explore the behavior of various designs. The influence of the various components in the system can be evaluated. General conclusions can be drawn about what makes a good pyrometer, and an existing pyrometer was evaluated, to predict its behavior as a function of temperature. The results show which combination of two channels gives the best precision.Paper presented at the Second Workshop on Subsecond Thermophysics, September 20–21, 1990, Torino, Italy.     

黑体式光电高温计调理电路设计

针对黑体式光电高温计中输出光电流范围较宽,并与温度呈近似指数关系、不易处理的问题,提出了基于精密对数放大器LOG100设计的调理电路,将宽范围的光电流转化为0～5V电压,便于进行A/D转换,提高了测温灵敏度,拓宽了测温范围,比传统的分立元件电路简单、可靠.实验表明:该方法测量灵敏度高,可以满足高温计最大测温偏差0.5%的要求.