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为了满足航空电子仿真系统对离散量输入输出控制的需求,设计开发了一种基于USB总线的离散量输入输出接口。该接口采用USB芯片CH375完成板卡与主机数据通信,51单片机作为主控制器,CPLD实现地址译码和逻辑控制,光耦和继电器分别为输入和输出隔离器件,具有采集56路光耦输入信号和56路继电器输出信号的功能。论文详细探讨了系统总体设计、硬件实现、软件配置和工作流程,给出了系统硬件的框架结构、软件架构,详细讨论了系统的驱动软件开发。该接口满足不同仿真系统离散量输入输出的需要,具有稳定性高、可热插拔、通道数目可变的特点,在工程应用中收到了很好的效果。 相似文献
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Controlling the anomalous Hall effect(AHE)inspires potential applications of quantum materials in the next generation of electronics.The recently discovered quasi-2D kagome superconductor CsV3Sb5 exhibits large AHE accompanying with the charge-density-wave(CDW)order which provides us an ideal platform to study the interplay among nontrivial band topology,CDW,and unconventional superconductivity.Here,we systematically investigated the pressure effect of the AHE in CsV3Sb5.Our high-pressure transport measurements confirm the concurrence of AHE and CDW in the compressed CsV3Sb5.Remarkably,distinct from the negative AHE at ambient pressure,a positive anomalous Hall resistivity sets in below 35 K with pressure around 0.75 GPa,which can be attributed to the Fermi surface reconstruction and/or Fermi energy shift in the new CDW phase under pressure.Our work indicates that the anomalous Hall effect in CsV3Sb5 is tunable and highly related to the band structure. 相似文献
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Recently discovered kagome metals AV3Sb5(A = K,Rb,and Cs) provide an ideal platform to study the correlation among nontrivial band topology,unconventional charge density wave(CDW),and superconductivity.The evolution of electronic structures associated with the change of lattice modulations is crucial for understanding of the CDW mechanism,with the combination of angle-resolved photoemission spectroscopy(ARPES)measurements and density functional theory calculations,we invest... 相似文献
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