Research On Electromagnetic Compatibility Of DSP Development Board

With the development of Electronic Science and technology, electromagnetic compatibility has been produced which is a new comprehensive discipline. Widely basic theoretical knowledge and practical engineering and technology involved by EMC, and the problem which electromagnetic compatibility studies is multidisciplinary and complex. Therefore, it is important to research and analysis electromagnetic compatibility characteristics of electronic systems (products) to optimize the electromagnetic compatibility of electronic systems (products) and improve the electromagnetic working environment for the electronic systems (products).With the development of electronic technology, it has been widely used in electronic power system. DSP system is favored by the power system with its excellent operational capability and stable working state. But with the complexity of the system, and the faster speed of signal transmission, the performance of the system will directly affected by the electromagnetic compatibility of DSP system. So it is very important to research on the electromagnetic compatibility of DSP system to improve anti-jamming performance and increase the stability of the system. In view of the above problems, this paper uses field analysis method, combined with electromagnetic compatibility analysis software to simulate the electromagnetic compatibility of the DSP system. The main work of this paper is as follows:First of all, the paper studies the theory of electromagnetic compatibility, and draws the basic model of the electromagnetic interference. At the same time, the problem of the signal integrity of the high-speed circuit is simulated, and the measures to reduce the interference are obtained.Secondly, according to the application background of DSP in the electric power industry, this paper designs a DSP system which can meet the basic needs of the electric power industry, and uses Ansoft Designer and Altium Designer to establish an electromagnetic compatibility model for the design of DSP system. Based on the simulation analysis of the model, the distribution of the electric current and the electric and magnetic fields of PCB are obtained. For improve the design of the PCB system analysis of the current drawings, the distribution of electric field and magnetic field, the method of reducing the electromagnetic compatibility must be accorded to obtain the better improve of electromagnetic compatibility of the DSP system.