为降低设备故障对模拟电子技术实验教学效率的影响,基于虚拟仪器技术设计了一种集成运放自动测试教学辅助平台.利用集成化虚拟仪器实验平台NI ELVIS II进行数据传输,设计了测试电路板卡;利用Lab-VIEW软件设计了仪器面板和平台软件部分.使用集成运放μA714 芯片对平台进行了测试,并在模拟电子技术的实际教学中进行了效果验证.测试和实际使用结果表明,该平台可以准确检测出故障芯片,正确率>95%;相比于未使用本平台时,师生使用本平台进行实验的准确率提升超过20%,耗时降低超过20%.
Design of an Integrated Operational Amplifier Automatic Testing Teaching Assistance Platform Based on Virtual Instrumentation
To reduce the impact of equipment failure on the efficiency of analog electronic technology ex-perimental teaching,an integrated operational amplifier automatic testing teaching assistance platform was designed based on virtual instrument technology.Software and hardware platforms were developed based on virtual instrument technology,utilizing the integrated virtual instrument experimental platform NI EL-VIS II for data transmission.A test circuit board was designed,and instrument panels and platform soft-ware were created using LabVIEW software.The platform was tested using the integrated operational am-plifier μA714 chip,and its effectiveness was verified in the actual teaching of analog electronic technolo-gy.The test and actual usage results showed that the platform can accurately detect faulty chips with an accuracy rate exceeding 95%.Compared to when the platform was not used,the accuracy rate of experi-ments conducted by teachers and students using the platform increased by more than 20%,and the time consumption decreased by more than 20%.
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