基于虚拟仪器的微波自动测量系统设计

发布时间：2018-05-05 00:37

本文选题：虚拟仪器 + 微波测量　；参考：《国防科学技术大学》2015年硕士论文

【摘要】：微波测量技术是电磁场与微波技术领域的一个重要组成部分,无论在军用领域还是民用领域都有着极为广泛的应用。传统意义上的微波测量主要指的是信号特性参数测量以及网络特性参数测量,但随着时代的发展与技术的进步,传统测量方法已不能满足实际需求。计算机技术与控制理论的高速发展则为这一问题的解决提供了一个良好的契机,将微波测量与自动测量系统相结合已成为微波测量领域的一个发展方向。而虚拟仪器技术的出现更是推动了这一方向的发展。本文以虚拟仪器技术为基础,深入研究了与其相关的各种开发技术,并且根据实际需求搭建了一个综合测试平台。其中包括总线选取、仪器程控、硬件配置等多个技术要点。平台设计的重点是通用性,即在同一个测试平台上完成多个测试项目,这样不仅可以增加仪器的利用率,还可以降低总体的测试成本。此外还考虑了测试智能化的问题,即在软件开发过程中做一些有针对性的设计,简化测试流程,降低使用难度。在总体测试平台的基础上,文章主要设计了三个测试分系统。分别为“军用设备电磁发射自动测量系统”、“双频自动测量系统”以及“紧缩场天线方向图自动测量系统”,其主要内容概述如下。“军用设备电磁发射自动测量系统”主要指的是暗室环境下电磁兼容测量中的电磁发射测试项,其依据标准是GJB151B。解决的问题主要包括硬件调配与测控软件开发,并增加了智能化设置,降低了操作难度。“双频自动测量系统”解决了接收机以及相关射频器件非线性特性的测量问题。主要包括硬件平台的配置、测试流程设计以及测控软件开发三个方面的内容。“紧缩场天线方向图自动测量系统”解决了天线方向图的测量问题,此外还有增益、半功率波束宽度等参数的测量分析。完成的工作主要是软件开发,包括转台控制模块设计,矢网控制模块设计以及测量流程的实现。技术上解决了串口通信以及PLC控制问题,能够比较好地完成测量任务。
[Abstract]:Microwave measurement is an important part of electromagnetic field and microwave technology. It is widely used in both military and civil fields. The traditional microwave measurement mainly refers to the signal characteristic parameter measurement and the network characteristic parameter measurement, but with the development of the times and the progress of the technology, the traditional measurement method can not meet the actual demand. The rapid development of computer technology and control theory provides a good opportunity to solve this problem. The combination of microwave measurement and automatic measurement system has become a developing direction in the field of microwave measurement. The emergence of virtual instrument technology has promoted the development of this direction. Based on the virtual instrument technology, this paper deeply studies various development technologies related to virtual instrument, and builds a comprehensive test platform according to the actual demand. Including bus selection, instrument programming, hardware configuration and other technical points. The emphasis of platform design is generality, that is, many test items are completed on the same test platform, which can not only increase the utilization rate of the instrument, but also reduce the overall test cost. In addition, the problem of intelligent testing is considered, that is, to do some targeted design in the process of software development, to simplify the testing process, and to reduce the difficulty of use. On the basis of the overall test platform, three test subsystems are designed in this paper. The main contents are summarized as follows: "automatic measurement system for electromagnetic emission of military equipment", "automatic measurement system for dual frequency" and "automatic measurement system for antenna pattern of compact field". The "automatic measurement system for electromagnetic emission of military equipment" mainly refers to the electromagnetic emission test item in electromagnetic compatibility measurement in dark room environment, which is based on the standard GJB151B. The main problems solved include hardware deployment and development of measurement and control software, and the intelligent setting is added to reduce the difficulty of operation. The dual frequency automatic measurement system solves the problem of measuring the nonlinear characteristics of receiver and related RF devices. It mainly includes the configuration of hardware platform, the design of test flow and the development of measurement and control software. The "Auto-measurement system of Antenna pattern of Compact Field" solves the problem of antenna pattern measurement, in addition to the measurement and analysis of gain, half-power beamwidth and other parameters. The main work is software development, including turntable control module design, vector control module design and the realization of measurement flow. The problem of serial communication and PLC control is solved technically, and the measurement task can be completed well.
【学位授予单位】：国防科学技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN015;O441

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