基于虚实技术结合的电子电路三合一实验箱设计

Design of Electronic Circuit Three-in-one Experimental Box Based on Combination of Virtual-real Technology

为提高学生自主创新实验能力和仪器设备使用率,提出一种能够满足“电路分析”、“模拟电路”和“数字电路”等实验课程的三合一实验箱设计方案.该实验箱上设计有虚拟仪器信号转换接口、多种实验导线接口、虚拟仪器信号区、数字电路实验区、电路分析和模拟电路实验区.学生实验时,采取虚实结合方式,利用三合一电子电路实验箱,结合计算机、NI myDAQ虚拟仪器、FPGA实验板、面包板和相关元器件等,完成实验项目设计、仿真测试、硬件电路搭建与调试、电路故障分析等过程.实践表明,该实验箱性能稳定、功能丰富,能够满足多门课程的实验教学,学生通过虚实结合的自主实验设计与测试过程,可以加深对电子电路基础课程重点难点的理解,进一步提高综合实践能力及电路分析、设计与调试能力.

In order to improve students'independent ability of innovation experiment and the utilization rate of experimental equipment,a design scheme of three-in-one experimental box is proposed,which can meet the requirements of circuit analysis,analog circuit,digital circuit and other courses.The experimental box contains virtual instrument signal conversion interface,various experimental wire interfaces,virtual instrument signal area,digital circuit experiment area,circuit analysis and analog circuit experiment area.Students can complete the design of experimental project,simulation test,hardware circuit construction and debugging,circuit fault analysis through the experiment box combined with computer,NI myDAQ,FPGA experimental board,bread board and related components by combination of virtuality and reality.The practice shows that the experimental box has stable performance and rich functions,which can meet the experimental teaching of many courses.Students can deepen their understanding of the key and difficult points of the basic course of electronic circuit through the independent experimental design and testing process by the combination of virtual and reality,and further improve the comprehensive practical ability and the ability of circuit analysis,design and debugging.