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Laser & Optoelectronics Progress, Volume. 59, Issue 5, 0523002(2022)

Calculation Method of LED Array Optical Power Based on Photoelectric Thermal Theory and BP Neural Network

Zheyang Hong*, Lingyun Xue, and Yifan Qian
Author Affiliations
  • School of Automation, Hangzhou Dianzi University, Hangzhou , Zhejiang 310018, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
    Equations (6)
    References (16)
    Cited By (2)
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    Figures & Tables(9)
    LED array heat transfer model

    Fig. 1. LED array heat transfer model

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    LED array thermal simulation test. (a) Layout structure; (b) simplified test principle; (c),(d),(e),(f) simulation results

    Fig. 2. LED array thermal simulation test. (a) Layout structure; (b) simplified test principle; (c),(d),(e),(f) simulation results

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    Neural network structure diagram

    Fig. 3. Neural network structure diagram

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    LED array temperature distribution result

    Fig. 4. LED array temperature distribution result

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    LED array photoelectric thermal model flow chart

    Fig. 5. LED array photoelectric thermal model flow chart

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    Experimental setup. (a) Physical drawing; (b) schematic drawing

    Fig. 6. Experimental setup. (a) Physical drawing; (b) schematic drawing

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    Relationship between LED array optical power and electrical power under different heat sink temperatures

    Fig. 7. Relationship between LED array optical power and electrical power under different heat sink temperatures

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    Relationship between LED array optical power and layout spacing under different electrical powers

    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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      Table 1. LED array junction temperature prediction and verification results

      LocationPt /WdTp /WTv /WRelative error /%
      12553.951.93.7
      22554.451.25.9
      52555.052.34.9
      12852.851.32.8
      22853.251.04.1
      52853.651.93.2
      13573.972.12.4
      23574.471.83.5
      53575.072.63.2
      13872.870.72.9
      23873.270.34.0
      53873.671.43.0
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    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

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    Paper Information

    Category: Optical Devices

    Received: Apr. 30, 2021

    Accepted: May. 28, 2021

    Published Online: Feb. 22, 2022

    The Author Email: Zheyang Hong (191190002@hdu.edu.cn)

    DOI:10.3788/LOP202259.0523002

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology