吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (02): 398-0402.

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Relay smooth switching technique and application in magnetic resonance sounding system

SHANG Xin-lei, LIN Jun, TIAN Yu-juan, WANG Ying-ji   

  1. College of Instrumentation and Electrical Engineering,Jilin University,Changchun 130061,China
  • Received:2009-10-28 Published:2011-03-01

Abstract:

The disturbance on the signal conditioning circuit caused by the relay was analyzed and the relay smooth switching technique was proposed to remove the relay disturbance. A smooth switching circuit was designed based on the Ncanal metal oxide semiconduetor, and used in the magnetic resonance sounding(MRS) system. The experiments proved that the technique can remove effectively the disturbance of the relay and reduce the time delay to 8 ms. It enhances the capability of the signal conditioning circuit to receive the weak signal, improves the performance of the instrument JLMRS.

Key words: technology of instrument and meter, magnetic resonance sounding(MRS), relay, smooth switching

CLC Number: 

  • TB53
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