Design And Implementation Of Standard Clock System Based On The GPS

In recent years, with the scientific and technological progress and the development of the times, people have time to the accuracy of the growing demands, particularly in national defense, scientific research and electricity, railway, transport, navigation and so on, so the development of high-precision Standard clock system has become increasingly important. Global Positioning System (GPS) Application of the standard clock more and more widespread, people are exploring the use of its excellent time synchronization of the development of the power system monitoring, protection and control of the various new methods.This paper explained the GPS global positioning system and its delegate at the principle, the standard clock on the GPS system structure, combined with current market demand and practical application of research and design a GPS clock synchronization system. The research paper by the expansion of GPS synchronized time clock system includes GPS receiver module, GPS antenna and the core control system. Which, GPS receivers used a high-performance GPS OEM board, and the core of this control system is the core of the system design, including hardware and software systems. It achieved a time through the serial port on the GPS information from the dot-matrix LCD display information and time-specific parameters, time information through the serial port will be converted to the format of the output agreement, the use of programmable logic arrays combined with single - Machine-generated 1 PPM and 1 PPH signal, AC measurement of the city and the frequent rate cycle clock, and other functions.After that experiment, the paper designed to expand the GPS time synchronization system clock pulse in the second, minute and hour pulse of the pulse output accuracy and time information to expand output, electromagnetic compatibility, stability and so on up to the design requirements of the mandate Performance indicators. The expansion of GPS standard time clock system widely used in power systems, large, medium and small computer network systems, data acquisition system, environmental control system, the railway system, will pay systems, radio and television broadcasting systems, and other needs of the civilian precision clock synchronization and Military fields.