20 m水下无线蓝光LED通信系统样机设计 -

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20 m水下无线蓝光LED通信系统样机设计

doi:10.37188/CO.2020-0190

长春理工大学空间光电技术国家地方联合工程研究中心，吉林长春 130022

基金项目:国防基础科研计划稳定支持项目（No. JCKYS2020604SSJS012）；国防科技重点实验室基金项目（No. 201911XXX401）；吉林省教育厅科学技术研究重点项目（No. JJKH20210820KJ）

详细信息

作者简介:
董　冰（1990—），女，吉林长春人，博士研究生，2016年于长春理工大学获得物理电子学硕士学位，现为长春理工大学光学工程专业博士研究生，主要从事水下无线光通信方面的研究。E-mail：279884056@qq.com
佟首峰（1972—），男，吉林洮南人，教授，博士生导师，博士，主要从事空间通信，空间光学遥感，光电检测和光电跟踪等方面的研究。E-mail：tsf1998@sina.com

中图分类号:TTN929.3
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出版历程
- 收稿日期:2020-10-23
- 修回日期:2020-11-11
- 网络出版日期:2021-05-08
- 刊出日期:2021-11-19

Design of a 20 m underwater wireless optical communication system based on blue LED

National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China

Funds:Supported by National Defense Basic Research Program Stability Support Project (No. JCKYS2020604SSJS012); National Defense Science and Technology Key Laboratory Fund Project (No. 201911XXX401); Science and Technology Research Key Project of Jilin Province Education Department (No. JJKH20210820KJ)

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Corresponding author:tsf1998@sina.com

摘要

摘要:在清澈海水中，透射窗口在蓝绿光波段，蓝光在海水中具有很好的传输特性。为了满足深海观测网络及平台间的高速率、大容量的通信需求，本文提出了一种水下无线可见光通信系统。该系统采用470 nm LED阵列拼接结构，增大束散角，并且提出采用菲涅尔透镜作为光学天线，实现大视场接收。在20 m的水下通信距离下，成功实现了5 Mbit/s通信速率，误码率低至10 ⁻⁶的可靠通信，并完整地组装出了工程样机，为后续的水下动态通信系统奠定了基础。
- 无线光通信/
- 水下光通信/
- 可见光通信/
- 蓝光LED
Abstract:In pure seawater, the transmission window is in the blue-green light band, and blue light has good transmission characteristics. This paper proposes an underwater wireless optical communication system that uses a 470 nm LED array stitching structure, increasing the diverging angle. At the same time, we use Fresnel lens as the optical antenna realizing the wide field of view receiving. At an underwater distance of 20 m, this system could successfully achieve reliable communication at a rate of 5 Mbit/s (data rate) and a BER of 10 ⁻⁶, which lays a foundation for subsequent underwater dynamic laser communication systems.
- wireless communication/
- underwater optical communication/
- visible light communication/
- blue LED

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图 1光束遇质点后的散射示意图

Figure 1.Schematic diagram of the scattering of a light beam upon contact with a particle

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图 2不同海水深度的太阳光渗透能力分布图

Figure 2.Distribution map of sunlight penetration capacity at different sea depths

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图 3太阳光功率在不同水域中随水面下传播距离衰减曲线

Figure 3.The attenuation curve of solar power vs. propagation distance under water in different water areas

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图 4系统总体设计框图

Figure 4.Block diagram of overall system design

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图 5发射光端机主要结构器件

Figure 5.Main structural components of the optical transmitter

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图 6发射光端机实物图

Figure 6.Physical image of the transmitter

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图 7菲涅耳透镜直径、焦距与光线入射角的关系示意图

Figure 7.Relationship between the Fresnel lens diameter, focus distance and incident angle

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图 8接收光端机主要结构器件

Figure 8.Main structural components of the optical receiver

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图 9接收光端机实物图

Figure 9.Physical map of the receiver

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图 10水下实验环境

Figure 10.Underwater experimental environment

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图 11水下距离20 m处系统通信误码率

Figure 11.BER of the system at 20 m underwater

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图 12水下距离20 m处系统输出波形及通信速率

Figure 12.Output waveform and communication rate of the system at 20 m underwater

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