摘要
为了提高密立根油滴实验中仪器测量的精确性,改善传统实验教学指导模式,提出了一种基于现场可编程门阵列(FPGA)和无线通信的密立根油滴实验测试系统。利用FPGA高速地采集和存储油滴运动的控制电压和下落时间,并构建了基于Zig Bee的分布式网络对数据进行无线传输。开发了基于C/S架构的实验数据管理系统,实现了上位机实时获取、处理、存储并显示实验数据的功能,并利用SQL Server数据库实现数据的本地保存和远程服务器的同步。实践证明:该系统具有灵活高效的实时教学指导模式,且测量结果的平均相对误差小于0.06%,相较于传统实验仪器有效地提高了测量精确度。
In order to improve measuring accuracy of existing Millikan oil drop experimental instrument and traditional teaching guidance mode,testing system of Millikan oil drop experiment based on field programmable gate array（ FPGA） and wireless communications is designed. This system uses FPGA to collect and store controlled voltage and falling time of oil droplet with high speed,and construct the distributed network based on Zig Bee for the test data wireless transmission. The experimental data management system based on client/server（ C/S）structure is developed,the upper PC can obtain,process,store,and display the experimental data in real time,and SQL Server database is used for data storage,and the data in the local server is synchronized to remote server. The practice proves that this system not only creates a flexible and efficient experimental teaching mode,but also average relative error of test results is less than 0. 06 %,compared with traditional oil drop instrument,the measurement accuracy is improved effectively.
出处
《传感器与微系统》
CSCD
2016年第11期103-106,共4页
Transducer and Microsystem Technologies
基金
湖南省自然科学基金重点资助项目(11JJ22039)
