Project Design And System Realization Of Timing System

The paper discusses the research significance and internal and external development of timing system. A new type of timing system adapted to the project is presented. This system meets the test and control system, communication and transmission system, central computer system in the experiments. This system expands the application range and possesses higher reliability and synchronous precision.Author designs timing system function, and designs the software and the hardware to the electromagnetic compatibility simultaneously. Author analyses the inf]uence which engineering rejigger has upon the electromagnetic compatibility using the theory method. To the question of electromagnetic compatibility, the problem of the signal integrality of high speed digital system and the electromagnetic compatibility of PCB is presented. The implementing scheme of the problem presented above is presented also. The scheme resolves the signal timing, transmission delay on the transmission line and undeeshatter. During the hardware design, one important tache is the signal integrality. The paper analyzes a variety of reasons of destroying the signal integral ity and presents the resolving scheme by describing the typical signal integrality in the high speed digital circuit. It also expatiate the method of implementing the signal integrality linking a practical high speed DSP system.According as the reliability model, the paper describes the prearranging purpose of the every cell during the course. The reliability model includes a reliability frame and correlative reliability math model. The reliability model estimates the probability that equipment finishes demanding function during the course. Prearranging spares and replaces the working cells and behaves as parallel structure in the model. Considering the importance and the complexity of the system, author confirms the distributing function by grade distributing, and establishes the average malfunction interval of every cell and system, the reliability of cells and system.To the question, that fluctuating damnifies diversified operationduring timing system signal transmits, the paper analyzes the fluctuating source and its physical mechanism. Making use of Chapman mathematics model to analyze the fluctuating accumulation, the paper presents the methods to reduce the fluctuating of circuitry system and the excursion. The methods adapt the system to handle higher tuning speed of the pointer and can also supply the smooth transition from natural synchronization to bad work mode. The methods make the timing constant of relative phase-locked loops close to a linear process.