张宇飏,陈浪,吕梦雪,李楚涵,何学敏

• 1:南京邮电大学理学院
• 2:南京邮电大学材料科学与工程学院

摘要(Abstract)：

针对目前大学物理实验中直流双臂电桥测电阻的实验器材少，精确度低且实验数据处理繁杂等问题，用LabVIEW成功构建了双臂电桥测量低电阻的虚拟仿真实验平台。实验采用了控制变量的研究方法，通过改变电阻棒的材质、横截面积、长度等参数来研究其对阻值的影响，并且通过绘制相应图象可以得到不同材质的电阻率值。实现了双臂电桥测电阻的全部功能，可以满足绝大部分实验需求，仿真程序选用合适的比率臂可以精确测量出10~(-7)Ω级别的电阻。多次仿真数据结果表明，此虚拟实验能精确测量出低电阻的阻值，误差均保持在0.020%以下，具有很高的精确度。在大学物理实验课程中，将虚拟仪器用于实验教学，有效提高了教学质量，同时还能摆脱实验地点和环境的束缚，使实验更加便捷，有助于预习和复习。

关键词(KeyWords)： LabVIEW;双臂电桥;虚拟仿真;信息化教学

Abstract:

Keywords:

基金项目(Foundation): 省级大学生创新创业训练计划项目(202310293117Y);; 南京邮电大学校级科研基金项目(No.NY220205)

作者(Author): 张宇飏,陈浪,吕梦雪,李楚涵,何学敏

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