基于LabVIEW传导骚扰测量系统

发布时间：2018-05-23 11:07

本文选题：电磁兼容 + 传导骚扰测试　；参考：《济南大学》2015年硕士论文

【摘要】：随着电子产品在各领域的广泛应用,电磁干扰带来的影响越来越突出,它妨碍产品的正常运行,影响人们的健康。因此,提高各类电子产品的电磁兼容性是迫切需要的。另外随着被测产品类别的不断增加、测试标准的不断提高,测试工作量也逐步加大,则测试速度就需要进一步提高。面对这样的问题,随着计算机软、硬件技术的快速发展,对电磁兼容自动测试平台的建立提供了机遇。传导发射试验是测试系统电源及端口的传导骚扰情况,系统产品的测试不应超过所要求的骚扰限值。电源端口的试验是通过电源网络和接收机进行的,通过电源网络给系统供电,接收机测试电源端口的骚扰值。测量过程中需要接收机的两种检波器:平均值检波器和准峰值检波器。传导发射试验一般测量0.15~30MHz频段。本文根据传导骚扰测量原理,对电磁传导骚扰测试技术进行了有关研究。利用LabVIEW 2013软件平台开发了传导骚扰自动测量系统软件,并借助山东省计量科学研究院电磁兼容实验室对自动测量软件进行了试验及结果对比分析,结果准确可靠,可应用于实际的测量任务中。该课题主要研究工作如下:(1)对电磁兼容中的传导骚扰测量原理进行分析,区分共模和差模两种干扰模式,熟悉试验的测量方法、测试指标和有关的试验配置。(2)根据系统的总体设计方案,构建传导骚扰测量系统的硬件结构。计算机通过GPIB电缆控制测量接收机进行试验测试,人工电源网络把从受试设备采样的骚扰信号通过同轴电缆传输给测量接收机,完成测量过程。本文还对各硬件结构设计进行了详细的介绍。(3)设计并实现基于LabVIEW的传导骚扰测量软件。系统的软件设计以参数操作模块、数据采集模块、数据分析模块、数据存储模块和报表生成模块为核心,以简明、友好的用户操作界面为人机交互接口,以GPIB接口作为与仪器的硬件接口。(4)在山东省计量科学研究院电磁兼容实验室进行传导骚扰试验,将该软件测试和常规测试结果进行对比分析。
[Abstract]:With the wide application of electronic products in various fields, electromagnetic interference (EMI) brings more and more prominent effects, which hinder the normal operation of products and affect people's health. Therefore, it is urgent to improve the electromagnetic compatibility of all kinds of electronic products. In addition, with the increasing of the product category and the improvement of the test standard, the test workload is also increasing, so the test speed needs to be further improved. In the face of this problem, with the rapid development of computer software and hardware technology, it provides an opportunity for the establishment of EMC automatic test platform. Conduct emission test is to test the power supply and the port of the system, and the test of the system product should not exceed the required disturbance limit. The test of the power port is carried out through the power supply network and the receiver, and the power supply network is used to supply the system, and the receiver tests the disturbance value of the power port. In the process of measurement, there are two kinds of geophone that require receiver: average geophone and quasi-peak detector. The 0.15~30MHz band is generally measured by conducting emission test. Based on the principle of conducting disturbance measurement, this paper studies the measurement technology of electromagnetic conduction disturbance. The software of automatic measurement system for conducting disturbance is developed by using LabVIEW 2013 software platform. The software is tested by electromagnetic compatibility Laboratory of Shandong Institute of Metrology and the results are compared and analyzed. The results are accurate and reliable. It can be used in practical measurement task. The main research work of this subject is as follows: (1) the principle of conducting disturbance measurement in EMC is analyzed, and two kinds of interference modes, common mode and differential mode, are distinguished, and are familiar with the measuring methods of the test. According to the overall design of the system, the hardware structure of the system is constructed. The computer carries on the test through the GPIB cable control measurement receiver, and the artificial power supply network transmits the disturbance signal sampled from the tested equipment to the measurement receiver through the coaxial cable, which completes the measurement process. This paper also introduces the design of each hardware structure in detail and implements the software of conducting disturbance measurement based on LabVIEW. The software design of the system takes parameter operation module, data acquisition module, data analysis module, data storage module and report generation module as the core, and takes the simple and friendly user interface as the man-machine interface. The GPIB interface is used as the hardware interface with the instrument. The conduct disturbance test is carried out in the electromagnetic compatibility Laboratory of Shandong Institute of Metrology. The results of the software test and the routine test are compared and analyzed.
【学位授予单位】：济南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN03

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