Research On Open Signal Monitoring Cloud Terminal

As the energy demand issues are widely concerned by humankind nowadays,the development and application of solar Photovoltaic(PV) technology has become increasingly important, in the meantime, the PV inverter control system is the guarantee of its reliable operation. In the context of the rapid development of embedded technology and the extensive application of the Internet, the PV inverter monitoring system cloud terminal mode has occupied an important position. This thesis is designed to study the building technology of open signal monitoring cloud terminal through the analysis of mainstream PV inverter market monitoring system,then to study and design PV inverter control systems on the basis.This thesis makes a detailed description of the architecture of the PV inverter monitoring system, elaborates the functionality and implementation systems from the respects of its demand, logic design, process handling, achieving a set of PV inverter monitoring system with the embedded Web cloud services. The research is basically carried on from two aspects:(1) The design of the hardware of the system. This design is based on the FPGA platform, it distributes the hardware resources reasonably, combines with RS485 field bus technology. The hardware has an access to the Ethernet and completes the building of hardware platform by adopting the NIOS II soft-core processor.(2) The design of the software of the system. This design is based on the SOPC completely built, it transplants Micro C/OS-II real-time operating systems and Lw/IP protocol stack, establishes communication links, designs Web application, compiles the monitoring Web pages, adds the monitoring program, and ultimately complete the design of system software.The research is designed to analyze the open signal monitoring cloud terminal,to design and realize the PV inverter monitoring system, therefore achieve the open extension based on the field bus technology and the cloud monitoring with embedded Web cloud service. We can draw a conclusion through the tests and analysis that the system can meet the design requirements.