摘要
多路高速同步数据采集是实现阵列式传感测量系统的关键。文中针对大规模传感器阵列的测量需求,设计了一种具有数据缓存功能的多路高速同步数据采集系统。该采集系统基于菊花链结构,通过FPGA和背板网络协议,实现了信号流和数据流的双向通信。通过信号完整性仿真分析,对系统结构、网络布局、硬件设计进行优化。设计了相应的控制逻辑和通信协议,实现了384通道、50KSPS的高速同步数据采集。实验结果表明,所设计的数据采集系统能够实现多路同步测量并达到一定精度。
Multi-channel high-speed synchronous data acquisition is the key to realize the sensor array measurement system. In this paper,a multi-channel high-speed synchronous data acquisition system with data cache function is designed for the measurement requirements of large-scale sensor array. Based on the daisy chain structure,the system implements two-way interaction of signal flow and data flow through FPGA control chip and backboard network protocol. The system structure,network layout and hardware design have been optimized by signal integrity simulation. Based on the proposed control logic and communication protocol,high-speed synchronous data acquisition of 384 channels with 50 KSPS is realized. Experimental results show that the designed data acquisition system can realize multi-channel synchronous measurement and achieve a certain precision.
作者
潘廷哲
张国钢
徐由档
宋政湘
王建华
Pan Tingzhe;Zhang Guogang;Xu Youdang;Song Zhengxiang;Wang Jianhua(Key Lab of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《电测与仪表》
北大核心
2020年第1期136-140,共5页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(51477129)
国家重点研发计划(2016YFF0201205)
关键词
数据采集
信号完整性
传输协议
菊花链结构
data acquisition
signal integrity
transport protocol
daisy chain structure
