Design of the Time Keeping System Based on FPGA and SCM

Article Preview

Abstract:

The current situation and the important role in power system of the time keeping system is described. It analyzed some questions which has been met in the development of the time keeping system and designed a time keeping system by GPS or Beidou as time mark.The double constant temperature trough crystal oscillator MV180 was used as the input clock of system, and used SCM control DAC7512 to adjust its frequency. The system carries on the frequency division processing to the adjusted local clock signal, then compares with the standard second signal received by the GPS or Beidou, adjusts the phase of the signal through frequency division by using FPGA and SCM, and finally, outputs the standard second pulse. It also can maintain the signal invariably after GPS or Beidou lock-lose to achieve the time synchronization of power system.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

120-124

Citation:

Online since:

December 2013

Authors:

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Zhaowu Dong: Study on several important technical issues in time-keeping. University of Chinese Academy of Sciences (2007). (In Chinese).

Google Scholar

[2] Qimin Zhou: Design of high precision timekeeping circuit and its realization on the navigation receive. Wuhan University of Technology (2008). (In Chinese).

Google Scholar

[3] Ying Liao: The development in timing system based on GPS and FPGA technology. Wuhan University (2005). (In Chinese).

Google Scholar

[4] Jin Liu, Qiuyuan Huang and Bing Shen: Chinese Journal of Electron Devices, Vol. 5 (2007), p.1623. (In Chinese).

Google Scholar

[5] Yulei Yuan, Tianyi Xia and Yuan Chen: Electronic Measurement Technology, Vol. 11 (2011). (In Chinese).

Google Scholar

[6] Zhan Li, Ying Zhang and Wei Zhou: Journal of Time and Frequency, Vol. 1 (2005). (In Chinese).

Google Scholar

[7] Guijun Chen: Study of Beidou and GPS timing system. Shenyang University of Technology (2011). (In Chinese).

Google Scholar