JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2009, Vol. 39 ›› Issue (4): 74-77.

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Design and implementation of a tunnel detector based on  the two time-difference method

  

  1.  LI Hai-Dong, TIAN Lan： School of Information Science and Engineering, Shandong University, Jinan 250100, China; 
    LI Shu-Chen：Geotechnical and Structural Engineering Research Center, Shandong University,Jinan 250061, China
  • Received:2009-03-12 Online:2009-08-24 Published:2009-08-24

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Abstract:

Based on the two time-difference induced polarization method, a tunnelgushing detector design was proposed. A specific realization of the receive system design in the PC+MCU mode was described. A series of optimization technology in IP-voltage collection was also discussed. Finally, a measurement result of the detector based on this design was shown.

Key words: induced polarization; two time-difference; polarization compensator; 50Hz notch filter; multiple-stage amplification; digital low-pass filter

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