基于DSP的多元数据同步采集与存储系统的设计与实现

Design and implementation of multivariate synchronous data acquisition and storage system based on DSP

从硬件和软件两个角度出发,介绍基于DSP的多元数据同步采集与存储系统的组成、工作模式以及功能的测试。系统主要由上位机和数字采集与存储单元组成,其中数字采集与存储单元的硬件部分包括电源模块,值班电路模块,数据采集模块,数据存储模块,时钟同步模块。系统采用DSP作为中央处理芯片,利用经过同步后的秒脉冲作为触发信号,实现同步数据采集。以CF卡作为存储介质,实现数据自容式存储。软件部分实现自检、同步、数据采集存储功能。经过测试,系统工作稳定,功能正常,同步精度在100ns以内。

The composition,working mode and function test of the multivariate synchronous data acquisition and storage system based on DSP were introduced from hardware and software aspects.The system was mainly composed of a host computer and a digital acquisition and storage unit.The hardware part of the digital acquisition and storage unit included a power supply module,a duty circuit module,a data acquisition module,a data storage module,and a clock synchronization module.The system used DSP as the central processing chip,and used the synchronized second pulse to trigger the analog-to-digital conversion chip to achieve synchronous data.The CF card was used as a storage medium to realize data self-storage.The software part realized self-checking,synchronization,data acquisition and storage functions.The testing results show that the system functions are stable,and the synchronization precision is within 100 ns.