基于PCI-E总线的高速多通道信号发生器设计

Design of High Speed Multi-channel Signal Generator Based on PCI-E Bus

针对现代水声定位系统性能检测需求,设计了一种基于PCI-E总线的高速多通道信号发生器;利用PC机LABVIEW软件生成不同的电模拟信号,通过PCI-E总线板卡输出到信号发生板,实现信号高速稳定传输;以FPGA为核心控制器,利用PCI9054桥芯片实现本地总线转换,经过DA逻辑控制以及多通道模拟电路调理,最终完成多通道信号波形输出;经测试系统功能稳定,达到了指标要求;该设计结构简单,可扩展性强,具有广阔的应用前景,目前已成功应用于某水声定位系统实验室功能检测。

In order to meet the modern acoustic positioning system performance test requirements, the paper designs a high speed multi-- channel signal generator based on PCI--E bus. Using the PC to generate different electric analog signal and generating board through PCI-- E bus board output to the signal, it realizes the signal transmission of high--speed stability; Taking FPGA as the core controller, and achieve local bus conversion using PCI9054 bridge-- chip, ~inally it complete the multi--channel signal waveform output through the DA logic control. and multi--channel analog circuit conditioning. The system function is stability, and meets the requirements by the experimental test. The design has the simple structure, strong scalability, and the broad application prospect, and has been successfully applied to function of the la- boratory detection of underwater acoustic oositioning system.