混合数据采集与存储的实现  

Design of Mixed Analog Digital Data Acquisition and Storage

作　　者：尹鹏亮[1,2] 张永瑞[1,2] 崔永俊[1,2] 李锦明[1,2] 

机构地区：[1]中北大学电子测试技术国家重点实验室,太原030051 [2]仪器科学与动态测试教育部重点实验室,太原030051

出　　处：《计算机测量与控制》2014年第10期3297-3300,共4页Computer Measurement &Control

基　　金：国家自然科学基金(51075375)

摘　　要：设计了一种传感器信号与GPIO口数字量隔离与采集的方案,研究了模拟信号线性光耦的隔离与电压转换技术,提出了采用光耦隔离模拟量与数字信号,利用主控芯片FPGA完成单路采样率不低于5kHz的模拟量与数字量数据的混合编帧,使用缓冲FIFO实时完成记录仪的发送与接收,通过对数据的的回读来确保数据传输的正确性与可靠性;经大量测试表明,该方案稳定、实用,满足系统的实时性要求。This paper introduces a design of analog signals and GPIO digital isolation and acquisition scheme, the research stressed the i- solation of the linear optocoupler and voltage conversion technology. The analog and digital signal are isolated by optocoupler. The main con- trol chip FPGA completed data mixed frame which contains the single channel sampling rate is not less than 5 kHz and digital data. The use of buffer FIFO is to send and receive real--time recorder. The data readed back to ensures the accuracy and reliability of data transmission . After a lot of tests, it showed that the scheme is stable, practical and meets the design requirements.

关 键 词：光耦 隔离 FPGA 编帧 存储 

分 类 号：TN431[电子电信—微电子学与固体电子学]