Design of Control System of GPS-Based Tower Clock

Abstract:

The design consists of STC89C51 MCU, the GPS15-XL receivers, LED display, servo motors, voice timekeeping and other components .And it is the GPS control system for tower clock, with timekeeping, display, automatic error correction functions. The design captures accurate time information from satellites by GPS15XL-W receiver chip, and collects and deals with time information received from SCM. And then it adjusts the clock. The SCM system consists master clock, and drives the secondary clock through giving out pulse to a servo motor. The system can also achieve the automatic error correction after power on, to change inconvenience of the traditional correction, reduce the mechanical errors. And the tower clock accurate up to ±1µs. There is no cumulative error.

• Periodical: Key Engineering Materials (Volume 568)
• Pages: 157-161
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.568.157
• Online since: July 2013
• Authors: Hong Wei, Guo Ping Zhou, Jian Wen Ding
• Keywords: GPS, Micro Controller Unit (MCU), Real-Time Adjusting, Servo Motor

References

[1] Z.M. Zhou, X.J. Yi, Q. Zhou. Principles and Applications on GPS. The Surveying and Mapping Press, Beijing (1997).

[2] Y. Zhang, W. Tan, Z.K. Feng. Current Applications and Development Trends of 3S in Broad Sense in Forestry. Journal of Beijing Forestry University, 2005, 27(S2).

[3] Jupiter 12 GPS Receiver (TU35-D410 and TU35-D420 Series-Jupiter 12), [OL]. http: /www. ipd -us. com/docs/jupiter12. pdf, 2003. 8. 4.

[4] R.H. Liu. Designs on MCS251 SCM and GPS2OEM Board Serial Communication System. Instrument Technique and Sensor, (2005).

[5] A.S. Wu. New AC Drives System Utilities. The machinery Industry Press, Beijing 1998. 6.

[6] D.H. Shi. The Data Communication Technology of Singer-Chip Processor for both Beginners and Exports. The University of Electronic Science and Technology Press, Xi'an (2002).

[7] D.J. Liu, Y.M. Shi, J.J. Guo. Principles and Data Processing on GPS, The Tongji university press of Shanghai, Shanghai (1996).

[8] S.M. Wei, S.H. Zhou. GPS Data in the Taxi Dispatch System in the Cluster Transmission Scheme. Electronic Technique, 29(2002).

[9] H.Y. Yang, Y. Zhang. The Designs and Implementation on GPS Positioning Data Measurement, Journal of Beijing university of aeronautics and astronautics, 24(1998).

[10] X. Zhong. Capital Automation Co. -Ltd, Panasonic Fully Digital AC Servo Driver, (1999).

[11] K.M. Sun, J.Y. Teng. System and Application of AC Servo-Motor Controlled by Single-Chip Computer. Journal of Shenyang Institute of Aeronautcal Engineering 2 (2003).

[12] Texas Instruments. Interfacing the DAC7731 to the MSP430F149, (2002).

[13] GPS Smart Antenna for Precise Synchronization. Trimble Company, America (2000).

[14] Allstar-Manual, CMC Company, Canada (1998).