The Study Of The Surface Temperature Characteristics Of The Typical Objects

Infrared imaging technology has many advantages such as distance effort, good anti-interference ability to penetrate the smoke and haze, all-weather work. With the infrared technology development, infrared imaging technology has been widely used in the national economy, national defense and scientific research, and has become an important component of modern photonics technology part. The technology by the world’s attention has been very widely used in the field of military and civilian.In the process of a new type of infrared imaging system development and application, it is necessary to get a large number of different states of the infrared image, images obtained through existing range experiments, however, has many limitations, infrared imaging simulation technology to solve this kind of problem is an extremely economical and effective way. The radiation characteristics of typical objects help to improve the accuracy of the simulation of the infrared image, it has a strong practicality. This article is for typical objects radiation model. Typical objects surface self-radiation is mainly influenced by the emissivity and surface temperature. This article is based on the knowledge of heat transfer, infrared physics and other disciplines, according to the variation of the energy, we have established the surface heat balance equation of typical objects. We analyze the factors such as the radiation of sun, the radiation coming from sky, exchange of sensible heat, latent heat on the surface and thermal conductivity, which influence the surface temperature. We analyze of existing research results, get a computational model of the typical objects surface temperature and the use the finite difference method to calculate surface temperature.We put the data collected by experiment into the original calculation model, and analyze of its shortcomings with the results. We correct the wind speed to modify the model, and access to the model of the calculation with the higher accuracy. We compare the results of the modified model with the actual measurement, get the best formula for calculating the wind speed impact. Finally, we explain the phenomena observed during the experiment, and carry out a qualitative analysis on the result of the error reasons.