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...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。展开更多
In this paper,a general method of data transmission system design on PXI platform is proposed.It can be used in readout system design for physical experiments.It aims at providing reusable and general interfaces for c...In this paper,a general method of data transmission system design on PXI platform is proposed.It can be used in readout system design for physical experiments.It aims at providing reusable and general interfaces for customized design of PXI while maintaining the transmission performance.It has three main features:(1)universal logic hardware interface,(2)ethernet based socket software interface,and(3)specific and simple data transmission protocol.Data transmission on PXI bus can be realized with the said two universal interfaces coordinated by this specific protocol.Test shows that this method is feasible and stable.This method can be easily reused in readout system designs for different experiments.展开更多
文摘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。
基金Supported by National Natural Science Foundation of China(NSFC)projects(Nos.11035001,11120101005 and 11175085)the Priority Academic Development of Jiangsu Higher education Institutions
文摘In this paper,a general method of data transmission system design on PXI platform is proposed.It can be used in readout system design for physical experiments.It aims at providing reusable and general interfaces for customized design of PXI while maintaining the transmission performance.It has three main features:(1)universal logic hardware interface,(2)ethernet based socket software interface,and(3)specific and simple data transmission protocol.Data transmission on PXI bus can be realized with the said two universal interfaces coordinated by this specific protocol.Test shows that this method is feasible and stable.This method can be easily reused in readout system designs for different experiments.