High Precision Infrared Standard Test Source System Research

Infrared standard test source system can emission some frequency, within infrared light to space. A certain difference temperature is between the background and the goal.The quantitative infrared simulation object is provided for infrared imaging detector, so as to achieve the the purpose that evaluates the tests of infrared imaging system.The paper discussed the infrared standard test influence source system temperature control precision of the influence factors, at the same time, researched radiation characteristic of the test source module surface and analys to determine the structure of the system, material parameters. Temperature control system based on a double AT89C54single-chip microcomputer. To realize temperature control requirements for accuracy, PID incremental control algorithm is proposed to realize accurate simulation of the infrared target image. Through the related experimental test, where was in the wild wind to blow, it can work normally in the bad weather as insolation, flying sand and so on. On the conditions that level4wind, the system of temperature control precision of0.5℃.