摘  要：虚拟仪器的核心是将传统的测量仪器硬件和计算机软件结合起来,完成测量任务,其外围硬件设备只是为了数据的采集与传输,软件才是虚拟仪器系统的核心。对于用户来说,可以通过修改LabVIEW后面板的程序来改变仪器的功能,按照自己的构思,设计自己的虚拟仪器平台。本文在详细分析了太阳能电池发电的原理基础上,利用虚拟仪器技术设计了基于Labview的光伏发电数据监测系统，从硬件和软件两个方面详细介绍了系统整体的设计与实现过程。用户可以利用虚拟仪器软面板控制数据采集卡实现对光伏电池电压、电流等数据的采集、处理、显示及存储等功能。对系统进行了功能测试，结果表明,系统各项指标符合设计要求。61269

毕业论文关键词：数据采集；光伏；最佳功率点；Labview

Abstract： Marks the industrial revolution to the traditional measurement technology of the virtual instrument technology. The so-called LabVIEW is based on PC, according to the requirements of users and their vision for the development of measurement platform. Is the core of the instrument hardware and software combined traditional, measurement tasks. The control system of LabVIEW is built, the hardware device is to provide data transmission channel, the software is the core of the control system. For users, you can program by modifying the LabVIEW panel to change the function of the platform, it can give full play to the imagination of the user, in accordance with their own ideas, the design of virtual instrument platform of their own. Design of photovoltaic power generation data monitoring system based on Labview the design, from two aspects of hardware and software implementation of the system are introduced in detail. Solar power generation principle and the selection of data acquisition card. Use LabVIEW software to control the data acquisition card on the photovoltaic battery voltage and current data acquisition, display and storage and other functions, and by analysis of the test data processing. Finally a power test to test whether it meets the requirements of assembly, assembly.

Key words: data acquisition; signal regulation; the optimal power point; LabVIEW

1 绪论 5

1.1 光伏电池领域现状与发展趋势 5

1.2 虚拟仪器概述 5

1.3 本文研究的内容和目的 5

1.4 本文研究的意义 6

2 光伏板模型及电磁特性 6

2.1 光伏电池的结构和原理 6

2.2 光伏系统的状态分析 8

2.2.1 电池的伏安特性曲线 8

2.2.2 功率匹配 9

2.3 光伏电池的检测参数 10

3 光伏电池板数据采集和测试系统硬件设计 12

3.1 系统总体结构 12

3.2 传感器及信号调理电路设计 13

3.3 数据采集卡的选择 15

4系统软件设计 17

4.1.1 LabVIEW软件介绍 17

4.1.2 LabVIEW的操作模板 20

4.1.3 光伏电池板数据采集和测试中软件设计的层次结构 23

4.1.4 光伏电池板数据采集和测试中软件设计的程序结构 23

4.2 软件界面设计思想