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Chinese Journal of Lasers, Volume. 48, Issue 7, 0706004(2021)

Research on Stereo Location in Visible Light Room Based on Neural Network

Li Zhao, Zhongda Han*, and Feng Zhang
Author Affiliations
  • School of Electronic Information Engineering, Xi'an Technology University, Xi'an, Shaanxi 710021, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
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    References (19)
    Cited By (11)
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    Figures & Tables(13)
    Visible light indoor positioning room model

    Fig. 1. Visible light indoor positioning room model

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    Structure diagram of visible light positioning neural network

    Fig. 2. Structure diagram of visible light positioning neural network

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    Positioning principle based on BP neural network

    Fig. 3. Positioning principle based on BP neural network

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    3D distribution of positioning error with H=0.5 m

    Fig. 4. 3D distribution of positioning error with H=0.5 m

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    3D distribution of positioning error with H=1.0 m

    Fig. 5. 3D distribution of positioning error with H=1.0 m

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    3D distribution of positioning error with H=1.5 m

    Fig. 6. 3D distribution of positioning error with H=1.5 m

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    Cumulative distribution of positioning error with H=0.5 m

    Fig. 7. Cumulative distribution of positioning error with H=0.5 m

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    Cumulative distribution of positioning error with H=1.0 m

    Fig. 8. Cumulative distribution of positioning error with H=1.0 m

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    Cumulative distribution of positioning error with H=1.5 m

    Fig. 9. Cumulative distribution of positioning error with H=1.5 m

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    Actual experimental platform

    Fig. 10. Actual experimental platform

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    Distribution of measured positioning error

    Fig. 11. Distribution of measured positioning error

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    • Table 1. Simulation parameters

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      Table 1. Simulation parameters

      ParameterValue
      Room model /(m×m×m)4×4×3
      LED bead power /W5
      LED bead half power angle /(°)60
      Luminous intensity of LED bead center /cd21.5
      Receiving area of photodetector /cm21
      Noise bandwidth factor0.562
      System data transmission rate /(Mbit·s-1)10
      Amplifier noise current /(pA·Hz-1/2)5
      Focus lens gain1.5
      Optical filter gain1
      Conversion efficiency of photodetector0.4

    • Table 2. Part of measured experimental data

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      Table 2. Part of measured experimental data

      Light intensityCoordinatesLight intensityCoordinates
      LED1/lxLED2/lxLED3/lxLED4/lxLED1/lxLED2/lxLED3/lxLED4/lx
      72.7261.5656.1661.20(0,0,0)61.2054.3647.5252.20(0.05,0.05,0)
      66.5258.3051.8456.52(0,0.1,0)50.0451.4841.0443.56(0.05,0.25,0)
      57.2455.0844.8250.04(0,0.2,0)39.6052.5634.3834.20(0.05,0.45,0)
      48.6050.4039.0641.22(0,0.3,0)28.9850.7629.7027.18(0.05,0.65,0)
      45.7253.2838.0640.02(0,0.4,0)60.8456.5255.4464.08(0.25,0.05,0)
      38.3451.4831.1429.34(0,0.5,0)55.8056.8852.5657.60(0.25,0.25,0)
      32.2250.0429.5227.36(0,0.6,0)43.2053.2839.0636.36(0.25,0.45,0)
      25.5646.0225.7422.77(0,0.7,0)33.1255.8042.4834.20(0.25,0.65,0)
      22.2341.7623.5820.43(0,0.8,0)45.9048.2459.0458.32(0.45,0.05,0)
      60.8462.6860.4864.44(0.1,0,0)47.1652.9256.1666.60(0.45,0.25,0)
      69.4863.7261.2069.12(0.1,0.1,0)37.8044.4650.0446.44(0.45,0.45,0)
      55.2459.4046.4449.08(0.1,0.2,0)27.1843.5642.3035.10(0.45,0.65,0)
      53.6457.6048.9651.20(0.1,0.3,0)47.1649.3257.9669.84(0.65,0.05,0)
      48.9659.0442.6445.72(0.1,0.4,0)44.2847.1659.7666.60(0.65,0.25,0)
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    Li Zhao, Zhongda Han, Feng Zhang. Research on Stereo Location in Visible Light Room Based on Neural Network[J]. Chinese Journal of Lasers, 2021, 48(7): 0706004

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    Paper Information

    Category: fiber optics and optical communications

    Received: Jun. 6, 2020

    Accepted: Aug. 28, 2020

    Published Online: Apr. 21, 2021

    The Author Email: Han Zhongda (hzdtxgc@163.com)

    DOI:10.3788/CJL202148.0706004

    Topics

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