论文部分内容阅读
利用尾流的光散射特性对其进行探测 ,光散射谱强度分布的半值宽度随尾流中气泡群的密度而变化。基于成熟的信号处理技术 ,文中提出了对尾流进行实时探测的解决方案。系统采用CCD光采样 ,ADC数据采集及FIFO缓存 ,DSP数据处理三级流水线方式工作。充分发挥DSP处理器片内存储器容量大的特点 ,使用其片内数据缓冲区交替对CCD进行信号采集和数据处理 ;在进行数据处理过程中 ,处理器以中断方式读取FIFO缓存结果。
It is detected by the light scattering characteristics of the wake, and the half width of the intensity distribution of the light scattering spectrum changes with the density of the bubble groups in the wake. Based on the mature signal processing technology, the paper presents a solution to real-time wake detection. The system uses CCD light sampling, ADC data acquisition and FIFO buffer, DSP data processing three pipeline way. Give full play to DSP processor on-chip memory capacity characteristics, the use of its on-chip data buffer alternately CCD signal acquisition and data processing; in the process of data processing, the processor interrupt FIFO buffer to read the results.