吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (1): 146-152.doi: 10.13229/j.cnki.jdxbgxb201601022

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Design and realization of synchronization system of multifunctional electromagnetic instrument

YU Sheng-bao, SU Fa, HE Jian-long, ZHENG Jian-bo   

  1. College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China
  • Received:2014-07-07 Online:2016-01-30 Published:2016-01-30

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Abstract: To meet the requirement of synchronization signals of multifunction electromagnetic instruments, a synchronization system is developed. The PC of the instrument is taken as the master device to design the interactive interface using LabVIEW programming. The parameters are set for the FPGA frequency division based on the acquired information of GPS Module and the idea of circular-queue. The hardware description language VHDL is used to design the FPGA modules to achieve the least square estimation of 1PPS and 10 kHz. The treated 1PPS is taken as the clock signal to control the FPGA frequency division module, and the module is applied to divide the treated 10 kHz for the generation of synchronization signal according to the parameters. Experiment results show that the developed system can manually or automatically generate 1 Hz to 5 Hz sync signals, with sync accuracy better than 0.03 s that meets the accuracy requirement of most electromagnetic methods.

Key words: technology of instrument and meter, sync signal, LabVIEW, GPS, FPGA, least squares estimation

CLC Number: 

  • TH761
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