A new method on estimating object emissivity by using four times measuring and principle of temperature compensation
Received:June 11, 2017  Revised:September 22, 2017  download
Citation:
Hits: 500
Download times: 623
Author NameAffiliationE-mail
ZHANG Ren-Hua Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resource ResearchChinese Academy of Sciences zhangrh@igsnrr.ac.cn 
MI Su-Juan China Transport Telecommunications Information Center misujuan871001@163.com 
TIAN Jing Key Laboratory of Water Cycle and Related Land Surface Processes,CAS  
LI Zhao-Liang State Key Laboratory of Resources and Environmental Information System  
SU Hong-Bo Key Laboratory of Water Cycle and Related Land Surface Processes,CAS  
HAO Gui-Bin Key Laboratory of Water Cycle and Related Land Surface Processes,CAS  
JIANG Bo   
LIU Su-Hua Key Laboratory of Water Cycle and Related Land Surface Processes,CAS  
Abstract:A “Two Times Thermal Irradiance and Four Times Measuring Method” for measuring the emissivity of the object was proposed. According to the instrument developed independently, the method and design has the advantage to measure the irradiance of the thermal irradiance which is exactly the same as that which is irradiated to the measured object. The method not only improve the measurement accuracy, but also can be designed as a small size portable emissivity tester. Designing of 1000w / m2 or more strong heat radiation source, the signal to noise ratio in equipment is increased substantially. In order to compensate for the warming of the measured target under the strong heat radiation source, the universal expression of solving the emissivity in the non-isothermal system and a "Process Method" for compensating warming were proposed, which solved the bottleneck problem caused by the temperature change in the non-temperature system. The comparison of the three measurement results of the emissivity measurement method shows that the method proposed in this paper is superior to the other two methods.
keywords:Emissivity  Two Times Radiation and Four Times Observing Method  Temperature Compensation  A Universal Expression of Solving Emissivity  Process Method
View Full Text  View/Add Comment  Download reader

Copyright:《Journal of Infrared And Millimeter Waves》