After the temperature measurement system is scaled by the black body furnace , we use least square method and neural network to calculate the temperature respectively according to the images taken from both the black body furnace and the common coal furnace . through comparison the calculation data with the result of thermocouple , an improved method of neural network is proposed . this method is more practical and precise 根据标定结果，本文用最小二乘和神经网络两种方法分别对黑体炉和普通煤炉的图像进行了温度计算；通过比较热电偶输出的温度值和计算的结果，提出了一种改进的神经网络方法，该方法更适用于工程实际，其测温精度较高。
The tests were conducted in the hypersonic low density wind tunnel at nominal test conditions of mach 16 , stagnation temperature 923k , stagnation pressure 1 . 40mpa and 7 . 30mpa . heat - transfer data were obtained on a hemisphere model , a sharp cone and a big blunt cone respectively by means of infrared thermal mapping techniques , that of a 0 . 5mm thickness blunt cone by virtues of thermocouples . furth ermore , heat - transfer on all those models was calculated with the theoretical method 最后在名义m _ = 16 、 t _ 0 = 923k 、 p _ 0 = 1 . 40mpa及7 . 30mpa的高超声速低密度风洞中，利用红外热图技术获得了半球圆柱、尖锥、大钝头三个模型表面热流分布，利用薄壁法技术得到了一壁厚为0 . 5mm的钝锥模型表面的热流分布，并通过工程理论方法计算了模型表面的气动热，把理论计算结果与上述试验结果比较，几者符合得较好。
Function of compensation lead cable which used for thermocouple is to prolong cold end of thermocouple , and composing system for measuring temperature by connecting with temperature meter . adopting high - quality import teflon insulation and sheath advanced technologic production chain , makes products owning good performance of resistance to high low temperature acidproof anticorrosive antiaging long - term using in oil , etc . normal working temperature is - 40 275 热电偶用补偿导线电缆的作用是来延伸热电偶的冷端，与测温仪连接构成测温系统，产品选用进口优质聚四氟乙烯绝缘和护套，并采用先进挤出设备新工艺流水生产线，具有耐高温低温，耐酸碱，防腐，耐老化等优异性能，可浸入油水中长期使用，正常工作温度- 40 275 。
Experiments on the measurement of temperature with thermocouple in alternating electromagnetic field are conducted . the effects of factors on the measurement result are studied , such as position , integral time , environment temperature , power supply , heating power and encapsulation mode of thermocouple . effective measures are obtained to decrease the negative effect of alternating magnetic field , which ensure that accurate measurement will be acquired in the following experiments 本文对交变磁场中热电偶测温的问题进行了试验研究，获得了热电偶所处位置、积分时间、环境温度、供电方式、加热功率和热电偶的封装方式等因素对测量结果的影响规律；并提出了减小交变磁场影响的措施，为在即将进行的试验研究中获得可靠的数据奠定了基础。
Considering that now the consumptive thermocouple measurement method is widespread in the world , and the technique is comparative mature . so the thermocouple technique has very high reference value to our system , and accordingly , in this text , we give an example of thermocouple to make a contrast with the consumptive optical fiber radiation thermometer 鉴于目前普遍采用的热电偶测量钢水的温度，在技术上比较成熟，对本系统有很大的参考作用，故本文也给出了一例热电偶测温的实例，与本系统作了对比，其对比的结果在文中给出。
