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Documents 水下短距离可见光通信技术的研究
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  • Author Author: sophie0love
  • Date Created: 21 Nov 2010 2:00 AM Date Created
  • Last Updated Last Updated: 9 Nov 2021 4:49 PM
  • Views 322 views
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水下短距离可见光通信技术的研究

随着对海洋环境探测的不断深入,水下无线通信技术也将变的非常重要。目前水声技术是实现水下通信最成熟的手段,而其它传统的用于空中无线通信的技术(如无线电通信技术和红外通信技术)在水中均难以实现。最近几年,少数几个国家开始对水下可见光通信技术进行研究,这是一项新的水下通信技术,其系统设计简单,体积小,成本低,主要应用于水下小型设备之间的近距离通信。以此为背景,本文对水下可见光通信技术进行了研究。 首先,本文分析了水下可见光通信技术研究的目的和意义,并对近年来国外在该领域的研究状况进行了简要概述。研究了海洋水体的光学特性,为选择可见光中的蓝、绿光部分作为水下通信媒介提供依据。 然后,提出了一种实现水下短距离可见光通信的方案,该方案物理层采用IrPHY标准、连接建立采用IrLAP协议。硬件部分包括主站和从站两部分,其中主要对从站进行了设计,即以凌阳SPCE061A单片机为平台,以红外通信控制器MCP2150为实现光信号和UART数据转换的接口,用大功率发光二极管 Luxeon Ⅲ Emitter 作为光源;用平面滤波光电二极管SLD-70BG2作为接收器,并用MAX3120将接收的光信号进行放大、滤波,使其符合MCP2150的解码要求。 因为MCP2150支持IrDA标准协议栈,所以系统的软件设计相对简单。本文分析了从站与主站的链接建立和数据传输过程,并对从站的数据收发和广播ID设置进行了设计。 最后,对论文进行了总结,对今后水下可见光通信技术的发展方向和应用进行了展望。

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