基于DSP的多路数据采集系统的设计

A Multi-Channel Data Acquisition System Based on DSP

DSP是一种适用于进行实时数字信号处理的微处理器。基于DSP的多路数据采集系统相对于基于单片机的数据采集系统更能满足数据采集系统在精确度和实时性方面的要求。它解决了数据采集系统中数据采集速度慢、不能多路数据同时采集的问题。文中首先对芯片CD4060和TMS302LF2407A的特点做了介绍,重点介绍了多路数据采集系统的系统组成、硬件设计和软件设计。该系统以TMS302LF2407A为控制核心,主要完成对外部多路模拟信号的快速、精确采集,实现对多路数据的采集与转换。

DSP is a kind of microprocessor applied in the processing of real-time digital signal. Compared with the system based on single chip microcomputer, the data acquisition system based on DSP could fairly satisfy the demands of accuracy and real time in data acquisition system. It solves the problem that the speed of data acquisition is too slow to acquire the multi-channel data simultaneously in the data acquisition system. This paper mainly describes the characteristics of CD4060 and TMS302LF240？A, and focuses on the system composition, software design and hardware design of the data acquisition system. This system, taking TMS302LF240？A as the control core, principally completes the fast and accurate acquisition of exterior multi-channel analog signals and realizes the data acquisition and transformation of multi-channel data.