以太网技术在ROV通信系统中的应用研究

Application of Ethernet technology in ROV communication system

为解决以往水下有缆机器人(ROV)通信系统中视频、数据、控制信号需要分不同线缆传输的问题,将以太网通信技术应用到ROV通信系统中,根据ROV通信系统的功能需求分析,在ROV控制系统中设计了一种星型拓扑结构的通信网络。在硬件方面,视频、数据、控制信号的传输共用同一信道,简化了通信系统的硬件结构;在软件方面,视频信号采用TCP/IP体系中的一个应用层协议—RTSP进行了传输,数据和控制信号则直接采用TCP/IP进行了传输,实现了3种信号全双工并行传输。研究结果表明:该通信系统能够满足ROV通信的需求;与以往的ROV通信系统相比,该通信系统具有更高的通信速率和稳定性,而且硬件结构简单,能够直接内嵌在ROV控制系统中。

In order to solve the problems that the signals of video,data and control were transmitted in different cables in traditional ROV communication system,Ethernet communication technology was applied in ROV communication system. According to the analysis of the functional requirements of ROV communication system,a kind of star topology communication network was designed in ROV control system.In terms of hardware,the signals of video,data and control were transmitted in the same channel,that simplified the hardware structure of the communication system. In terms of software,the signal of video was transmitted by RTSP,an application layer protocol in TCP/IP system and the signals of data and control were transmittedby TCP/IP,that achieved three kinds of signal full-duplex parallel transmitting. The experimental results show that this communication system can meet the needs of ROV communication. Compared with the traditional ROV communication system,this communication system had higher communication speed and better stability,as well as the simpler structure of hardware,so it can be directly embedded in the ROV control system.