虚拟仪器技术在电磁环境测试系统中的应用

Application Of Virtual Instrumentation in Radio Measuring System

电磁环境测试是无线电管理部门批准设台和指配使用频率的技术依据。为了减轻测试人员的工作强度 ,提高测试工作的效率和准确率 ,改变以前无法获取测试数据 ,只能依靠打印频谱图输出测试数据的落后局面 ,在VB平台下 ,开发基于虚拟仪器技术 (VISA和SCPI)的自动测试系统应用软件 ,实现HPE74 0 5AEMC分析仪的数据采集、传输、处理等自动控制功能 ,建立电磁环境测试数据库文件 ,方便存档、查询 ,利于测试数据的共享、交换和处理。

Radio administration department permits station's building and distributes frequency used by measurement in radio electromagnetic environment. In order to improve the efficiency and accuracy of testing, the automatic measuring system software based on virtual instrumentation technology(VISA and SCPI) has developed at the VB platform, which changes the phase of outputting data just by printing spectrum chart .The system realizes functions of data sampling, transffering and processing in HP E7405A EMC analyzer. It also can establish database files for saving, inquirring, data shareing, exchanging and processing. The spectrum chart of mearsurment result is the same as that of result by manual work.