摘要
针对纳米通道单分子检测系统的信号特点和对数据采集的采样精度、采样速率及实时性等要求,设计并实现了基于FPGA和USB2.0接口的数据采集系统;该系统以FPGA作为控制核心,包括数据采集模块、电压输出模块和USB接口电路模块;通过USB2.0接口与计算机连接,实现数据的实时采样和参数的在线配置;此外本系统还采取了低噪声设计;经过相关试验表明,该系统引入的噪声在1mV内,能够稳定进行数据采集,且采集信号与电压输出信号同步传输,证明该系统能够满足纳米通道单分子检测系统对数据采集的要求。
A data acquisition system based on the FPGA and USB2.0 technology is designed for the nanopore single-molecule detection according to the requirement of the nanopore single-molecule detection system.This system linking pre-amplifier and computer includes data acquisition module,voltage output module and USB interface circuit module,realizing the data real-time sampling and parameters of online configuration.In addition,this system is low-noise design.Tests show that this system is able to acquire data stably,and the noise is controlled with in 1 mV.This system meets the acquirements of nanopore single-molecule detection and worthy of using abroad.
出处
《计算机测量与控制》
2015年第1期224-226,230,共4页
Computer Measurement &Control
基金
国家重大仪器专项(21327807)
