摘要
介绍了一种基于放大器、模数转换(Analog to Digital Converter,ADC)和现场可编程门阵列(Field Programmable Gate Array,FPGA)的多通道数据采集方案,包括采集系统的主要构成以及实现方法,最后对系统性能进行了测试。该电路模块为子母板结构,通过PCI Extensions for Instrumentation Express(PXIe)机箱背板总线实现数据的读出能力。该模块可支持8个采集通道的同步采集,每通道采样率可达500 MS/s。测试结果表明,在其带宽内有效位可接近11 bit(ADC采样精度为14 bit),能够满足高速高精度的数据采集需求。
The paper introduced a multi-channel data acquisition scheme based on amplifiers,Analog to Digital Converter(ADC)and Field Programmable Gate Array(FPGA),including the main components and implementation methods of the acquisition system.Finally,the system performance was tested.The circuit module is a mezzanine card structure,and the data readout ability is realized through the PCI Extensions for Instrumentation Express(PXIe)chassis backplane bus.The module can support simultaneous acquisition of 8 acquisition channels,and the sampling rate per channel can reach 500 MS/s.The results show that the Effective Number of Bits(ENOB)can be close to 11 bit in its bandwidth(ADC sampling accuracy is 14 bit),which can meet high-speed and high-precision data collection needs.
作者
唐新懿
曹平
解立坤
李超
黄锡汝
安琪
Tang Xinyi;Cao Ping;Xie Likun;Li Chao;Huang Xiru;An Qi(State Key Laboratory of Particle Detection and Electronics,University of Science and Technology of China,Hefei 230026,China;Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China)
出处
《信息技术与网络安全》
2021年第4期56-63,共8页
Information Technology and Network Security
基金
国家自然科学基金(11805202)
安徽省自然科学基金(2008085QA46)。
