The Design Study For The Embedded Harmonic Detector

With the power of the development of electronic technology,harmonic pollution in electrical power system becomes more and more serious,has become the network of "public hazard." As a consequence to monitor and study power network is not only a premise to confine and eliminate also a urgently demand to assure power supply system to run safely and economically and devices and personal safety.Based on the analysis of harmonic detection technology at home and abroad on the status and development direction of the foundation, Power harmonics of the basic theory and the detection algorithm. Harmonic analysis of the algorithm were right : Fourier transform method, adding windows, wavelet transform method, Improved detection and FFT ip-iq detection algorithm research. Focus on ip-iq detection algorithm to achieve the theory and a detailed discussion, using Matlab / Simulink software this detection algorithm, a simulation.In this paper, the harmonic detector for needs analysis, been using high-performance ARM9 Samsung S3C2410 processor hardware architecture of the building and the use of Linu x Embedded operating system for harmonic detector design program. Design of the program on the basis of this paper, the harmonic detection of hardware and software systems for each specific design. Hardware, the Selection from the CPU, the core S3C2410 circuit module design, LCD / VGA interface circuit design, ZLG7290 keyboard interface circuit design, IDE interface circuit based on the design and the ADS8364 analog interface circuit design described in detail; software for embedded Linux gave a detailed presentation discussed in the Linux platform S3C2410 transplantation of specific methods and steps to develop the IDE, ADS8364 and ZLG7290 in Linux hardware drivers, Finally, the harmonic detection instrument application layer software testing main program, Harmonic analysis algorithm based on the procedures and MiniGUI graphics interface procedures for the study and design.