Development Of FPGA-based Substation Outer Field Panoramic Video Monitoring System

In the entire power system,automated monitoring has been greatly popularized,and technological development is becoming more and more mature.As the hub of the power grid,the substation plays a vital role in the entire power system.However,in order to save land resources,the location of the substation is relatively remote,especially for some places in western China.The maintenance has brought great difficulty.In the current popular substation monitoring system,the substation duty staff must identify and monitor various grid parameters for stable operation at all times,and increase the work tasks of the substation duty personnel.In recent years,with the rapid development of video surveillance,the video surveillance of the substation has also developed,but the acquired images are independent,sequential images,and the resulting scene may only contain part of the small field of view image,and Multiple or complete scenes cannot be displayed in one image,which requires an improvement to the current substation video monitoring system,which introduces the stitching technique of panoramic images.Video stitching technology can solve the above problems very well.This article uses Xilinx's latest ZYNQ-7000 series programmable system platform,which combines the dual-core ARM Cortex-A9 processor with peripheral programmable logic resources and has a high-speed interconnect structure inside.With soft and hard co-design,image acquisition,pre-processing,image stitching,remote transmission and display can be integrated into an embedded system.Compared with the single use of traditional FPGA,ARM,DSP,the design method can not only make full use of FPGA's powerful parallel processing capability and very rich logic resources,but also realize some complex algorithms through the processor part to build the operating system.Based on the analysis of the structure of the traditional substation video monitoring system,the overall structural framework of the panoramic video monitoring system is designed.Based on this,the hardware platform of the core system design is selected,namely the Xilinx ZYNQ-7000 series development platform.Then,based on the selection of the development platform,the hardware system interface such as the acquisition interface and the Gigabit Ethernet interface is designed according to the video image processing speed.Finally,the research and optimization of image stitching method and FPGA implementation are completed.This design adopts the soft and hard collaborative design method to complete the ZYNQ-7000 real-time video image splicing system,and finally it can meet the design requirements by testing it.