基于串行背板技术的声呐数据传输系统设计

根据拖曳线列阵声呐工作特点和水声信号传输的特殊要求，提出了一种基于高速背板串行传输技术的全数字式水声信号多路传输方法。该方法选用CY78923／CY78933作为物理层芯片解决水声信号的高速串行传输，采用复用／竞争的思想实现多路数据混合传输。并通过同步互联技术解决模块间的同步采集问题。硬件上设计了以可编程逻辑器件为核心的数据采集模块和串行背板传输模块。该系统可适用于传输电缆体积受到严格限制，且需要同步多路数据采集的数据传输场合。

Design of Towed Array Sonar Data Transmission System Based on Serial backplane Transmission Technology

According to the working characteristic of the towed array sonar and the special require of acoustic signal transmission, a kind of multi-channel data transmission method based on high-speed serial backplane transmission technology is proposed in this paper. The method includes the following techniques: using CY7B923/CY7B933 as physical layer chips to transmit acoustic signal, transmitting the whole data in one channel by using the idea of multiplexing and competing, and using synchronously interconnected technology to synchronize acoustic signal sample. Signal sample modules and serial backplane transmission modules are designed with the core of programmable logic devices. It is suitable for the case that the volume of cable is strictly limited, and synchronous data acquisition is necessary.