通用电子测量仪器自动测量系统的实现

Realization of Universal Electronic Measurement Instrument Auto-measurement System

摘要:

现如今通用电子测量仪器具备了更宽的测量范围和更高的测量精度,功能完善,应用广泛,并且集成了外部程控接口,因此通过构建基于这些测量仪器的自动测量系统来进一步提升测量效率就显得十分必要；Agilent公司生产的E5072A矢量网络分析仪是微波领域用来测量分析网络参数的测量仪器,其集成了可用于外部控制的通用总线接口(GPIB),并且支持可编程仪器标准命令(SCPI)的控制,这样就构成了物理链路和程序控制之间的通路；因此利用LabVIEW虚拟仪器开发平台和SCPI控制命令,通过GPIB总线连接上位机与网络分析仪,构建了一套E5072A的自动测量系统,这也是通用电子测量仪器实现程控测量的有效方法；使用该测量系统进行了氯化钠溶液浓度的测量试验,试验结果表明该系统能够极大的提高测量效率,移植性好,可以胜任一些耗时长、需定时测量等较繁复的测量工作。

Abstract:

Nowadays universal electronic measurement instrument can provide wider measurement range and higher accuracy, excellent function makes them been widely used, and they have integrated external program-controlled interface, so it is significantly necessary to construct the instrument-based auto-measurement system to further enhance the measurement efficiency. The E5072Avector network analyzer from Agilent is applied to measure and analyze network parameters in microwave area, it has integrated external program-controlled GPIB interface and supports SCPI commands, that means an access between physical link and program control can be established. So the E5072A auto-measurement system with LabVIEW development platform and SCPI commands has been built, this is also the valid method to set up a universal electronic measurement instrument auto-measurement system.The system has been used to measure the concentration of NaCl, the result shows that the auto-measurement system displays favorable properties like enhanced measuring efficiency, good portability and is capable for complicated measurement which is time-consuming and timing-necessary.