In order to deal with the problem of large volumes of tests during the research of new type of thin film solar cells,a multi-channel photovoltaic measurement system with software-controlling switc-hing is developed in this work.Based on the software-controlling circuit switches,the system can auto-matically perform I-V testing of multiple photovoltaic cells in turn.The hardware circuit board,switch control circuit,current-voltage characteristic program were designed and researched.This work has de-veloped a printed circuit board(PCB)with multi-channel switching and completed LabVIEW-based soft-ware.By using RS232 communication the system can provide several functions,including parameters set-ting,running tests,data acquisition,and timing program.This measurement system adopts modular de-sign,which is in favor of later maintenance and channel expansion.According to this system equipped with solar simulator and Keithley 2 400,the researchers can carry out two wires and four wires multi-channel photovoltaic measurements.And it can also easily finish the data acquisition for the long-term stability tests of solar cells.%为解决目前新型薄膜电池研究中光伏测试工作繁重的问题,本文提出开发一种适用于光伏电池的测试系统.该系统建立在软件控制电路开关基础上,可自动依次完成多个光伏电池样品的I-V测试;对相关的硬件电路板、电路控制开关、伏安特性测试软件的系统化设计进行了详细阐述;开发了具有多路复合开关的印刷电路板;完成了基于LabVIEW开发环境的软件设计.该系统通过RS232通信可完成I-V测试的参数设置、执行、数据采集和定时等功能.模块化设计保证了后期维护和测量通道扩展.基于该套系统,可以开展两线法和四线法测量,更高效地完成电池稳定性的数据采集.
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