基于LED阵列的相对辐射强度测量和Lab VIEW软件设计搭建了一套非接触式LED结温测试系统。首先介绍了该系统的测试原理、硬件组合以及软件设计思路。然后利用系统测试并标定了红、黄、蓝、绿四种颜色LED小灯的结温与相对辐射强度之间的关系,并对红色LED阵列的结温进行了实时测量和分析。结果表明,该系统可以对LED阵列进行相对辐射强度与结温关系的标定,实现对LED阵列的非接触式的结温测试。 Based on the relative radiation intensity measurement of LED array and the design of Lab VIEW software, a set of non-contact LED junction temperature test system was built. First introduced the system test principle, hardware combination and software design ideas. Then, the relationship between the junction temperature and the relative radiation intensity of red, yellow, blue and green LED lamps was measured and calibrated systematically. The junction temperature of the red LED array was measured and analyzed in real time. The results show that this system can calibrate the relative radiation intensity and junction temperature of the LED array and realize the non-contact junction temperature testing of the LED array.