基于DSP的多通道波形取样电路设计

Multi-channel waveform acquisition system based on digital signal processor

介绍了 BES 主漂移室电荷测量的多通道波形取样电路 ,该电路的采样频率为 4 0 MHz,由于采用了 DSP,可以实时地对采样数据进行零压缩、扣台基、求电荷量、二次项修正等多项处理。整个系统采用流水线工作方式 。

This paper describes the design considerations of multi vhannel high speed waveform acquisition system, which is designed for main drift chamber of BESⅡ. Its high speed data pre processing and data compressing reduces the volume of data transmission. Partial pipelining enables data acquisition and data processing proceed at the same time. This reduces the dead time of the system. To avoid the loss of good events, the pipeline archiecture was used for buffering data. Parallel technique was used in the design of the system in order achieve quicher processing speed.