多阵元拖缆勘探系统传输方案的设计

根据多阵元拖缆勘探系统中水声数据传输的特点,设计了一种基于LVDS(Low-Voltage Differential Signaling)技术的流水线型数据传输系统。通过8B10B编码方式保证了数据传输时的直流均衡;利用"点名帧"的方法实现了对传输包包号的动态设置;采用预加重和均衡技术解决了LVDS信号远距离传输的问题,并克服了传统系统采用光纤传输时机械强度差、断线修复难等缺点。经测试,系统在100 m传输线长、192 Mb/s数据率下工作稳定、可靠,实验结果证明了方案的可行性。

Design of the transmission of multi-element towing hawser exploration system

The pipelined data transmission system based on LVDS is designed in this paper,according to the transmission characteristics of the underwater signal in the towing hawser exploration project.8B10B encoding method is employed for data transmission to ensure DC balance.A "frame name" approach is used to achieve number setting of dynamic transmission bags.In order to solve the LVDS signal transmission distance problems,pre-emphasis and equalization technology are used in this system.At the same time,it could overcome the defect of the traditional system which use the optical fiber to transmit the signal,such as the poor mechanical strength and difficulty to repair broken line.It is proved that the system is stable and reliable in the 100-metre-long transmission line and at 192 Mb/s data rate.