Zheyang Hong, Lingyun Xue, Yifan Qian. Calculation Method of LED Array Optical Power Based on Photoelectric Thermal Theory and BP Neural Network[J]. Laser & Optoelectronics Progress, 2022, 59(5): 0523002
- Laser & Optoelectronics Progress
- Vol. 59, Issue 5, 0523002 (2022)
Fig. 1. LED array heat transfer model
Fig. 2. LED array thermal simulation test. (a) Layout structure; (b) simplified test principle; (c),(d),(e),(f) simulation results
Fig. 3. Neural network structure diagram
Fig. 4. LED array temperature distribution result
Fig. 5. LED array photoelectric thermal model flow chart
Fig. 6. Experimental setup. (a) Physical drawing; (b) schematic drawing
Fig. 7. Relationship between LED array optical power and electrical power under different heat sink temperatures
Fig. 8. Relationship between LED array optical power and layout spacing under different electrical powers
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Table 1. LED array junction temperature prediction and verification results
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