提出基于可编程逻辑控制器PLC 的太阳能跟踪系统, 使光伏模块能实时跟踪太阳光照, 从而最大限

度地获得太阳能。系统的硬件有PLC 输入/输出端口的配置、信号处理单元、光敏电阻光强法比较电路和开关电

源的设计 系统的软件有PLC 的控制和监控程序, 基于Visual Basic 6.0 软件平台开发的PC 机监控和数据采

集程序。基于PLC 的太阳能跟踪系统既适用于独立的太阳能发电设备, 也适用于串、并联的大型太阳能光伏发

电系统的现场总线控制-Proposed based on programmable logic controllers PLC' s solar tracking system that allows real-time tracking of photovoltaic modules to sunlight, so as to maximize access to solar energy. System' s hardware PLC input/output port configuration, signal processing unit, the light intensity method is more photosensitive resistor circuit and switching power supply design　system software with PLC control and monitoring procedures, based on Visual Basic 6.0 software, the PC platform monitoring and data collection procedures. PLC-based solar tracking system is applicable to an independent solar power generation equipment, but also for the series and parallel large-scale solar photovoltaic power generation fieldbus control system