摘要
针对分布信号的同步数据采集,给出了1种基于ARM9的同步数据采集系统的设计方法和过程,并对设计中遇到的主要问题进行了分析和解决。本文从系统的硬件组成、软件设计进行了说明。本系统主要功能是对分布在各个点的各种物理量(如温度、压力、声音)进行同步数据采集,将采集后的数据进行模数转换。系统最大的优点是利用GPS信号控制ADC芯片的转换时间从而实现各个采集节点的高精度同步。最后,通过实验验证了该系统的同步精度可以达到100ns以内。
Distribution of signals for synchronous data acquisition,gives a method and process of design of synchronous data acquisition system base on ARM9,analysis and solution the main problems.This paper were introduced by the system＇s hardware composition and software design.The main function of system is the distribution of various parameters（such as temperature,pressure,sound） at different point in synchronization data acquisition,after the acquisition will be the analog to digital conversion.The biggest advantages of the system is use of the GPS signals control the ADC conversion time in order to realize high-precision synchronization of each acquisition node.Finally,the synchronous accuracy of the system can be achieved within 100ns by experiment.
出处
《电子测量技术》
2011年第10期96-98,共3页
Electronic Measurement Technology
