摘要
数据采集是对信号处理的重要手段。针对导引头电压的检测需求,提出一种实时数据采集显示系统设计方法,给出信号预处理电路,应用可编程逻辑器件EPM7128SLC和8路模拟多路选择器ADG508A实现采集信号的选通设计,介绍单片机80C196KB内A/D转换器在采集电路中的使用方法,使用双端口存储器IDT7130实现数据的双机传输,在并口EPP模式下,采用WDM驱动方式,完成采集数据实时读取和显示。通过实践证明,该系统能够满足多通道电压采集实时显示要求,电路设计方法简单,可靠性高,且采集通道具有扩展性。
Data acquisition is an important means of signal processing;Aiming at the demand of seeker voltage examina- tion,a design method of real-time data acquisition display system is presented.The signal pretreatment circuit is given. Using CPLD EPM7128SLC and 8-channel analog multiplexers ADGS08A achieve the signals channel choice design.The using method of A/D converter on MCU 80C196KB is introduced in the gathering circuit.The data transmission between PC and MCU is achieved by using dual-port static SRAM IDT7130.Under the PC parallel-port EPP mode,by adopting WDM drive mode,the real-time read and display of gathering data are completed.It has been found that this system can meet the requirements of multi-channel voltage gathering real-time display.The system circuit design method is simple, and it has high reliability. Its gathering channels have the scalability.
出处
《电子设计工程》
2009年第10期88-90,共3页
Electronic Design Engineering
基金
空装技改项目(KJ208323)
关键词
单片机
可编程逻辑器件
多路选择器
数据采样
实时显示
MCU （Micro Controller Unit）
CPLD （Complex Programmable Logic Device）
multiplexers
data sampling
real-time display
