CAJ | 학술논문

为满足L ED散热课程实验教学环节中学生技能培养的需要，以6颗L ED组装成的散热模块为实验对象，并将单颗LED在SSP8810-S型测试系统中测得的数据拟合，得到不同驱动电流下发热功率、参考点温度分别与芯片结温的关系式，以此为工作原理，设计并搭建出一套可实现L ED散热模块总热阻测量的学生实验系统。该实验系统操作简单，成本低廉，能通过改变L ED驱动电流、空气流速和环境温度等关键影响因素，获取L ED结温和总热阻的变化趋势，且实验数据有效可靠，展现的客观规律有助于学生对散热设计与分析方法的学习和理解，值得在L ED散热相关课程的实验教学中推广使用。
위만족L ED산열과정실험교학배절중학생기능배양적수요，이6과L ED조장성적산열모괴위실험대상，병장단과LED재SSP8810-S형측시계통중측득적수거의합，득도불동구동전류하발열공솔、삼고점온도분별여심편결온적관계식，이차위공작원리，설계병탑건출일투가실현L ED산열모괴총열조측량적학생실험계통。해실험계통조작간단，성본저렴，능통과개변L ED구동전류、공기류속화배경온도등관건영향인소，획취L ED결온화총열조적변화추세，차실험수거유효가고，전현적객관규률유조우학생대산열설계여분석방법적학습화리해，치득재L ED산열상관과정적실험교학중추엄사용。
In the experimental teaching of Source and Lighting major ,it is urgent to improve the students’ skill training about LED thermal design and analysis .A heat dissipation module with six LEDs was chosen to be the experiment objects . And using SSP8810-S type multi-test system , the relationship calculating formulas between heat powers or reference point temperatures and junction temperatures of one LED sample were obtained through test data fitting .Based on these relationship calculating formulas ,an experimental system was designed and assembled for measuring total thermal resistance of LED module .This experimental system has the advantages of simple operation and low cost .Further more ,through changing LED drive current , airflow velocity and ambient temperature , the varying trend of junction temperatures and total thermal resistances can be found .And the objective laws ,demonstrated by above right and effective experimental data , will help students to study and understand the methods of thermal design and analysis . Therefore , this experimental system is worth to widely apply in experimental teaching of related courses .