A Multirate and Multi-Channel Data Acquisition System Based on DSP

摘要

This paper tells the design of a multirate and multi-channel data acquisition system based on DSP, which adopts delta-sigma A/D converters(CS5321/CS5322) as collecting parts, regards DSP (TMS320C31) as the core CPU. The paper mainly describes the architecture of the multirate and multi-channel data acquisition system, the realization of multirate data acquisition and the new method of the implementation of the interface between the multi delta-sigma A/D converters and the DSP's serial port. And finally, the paper gives the experimental result.