Title:
SYSTEM FOR MEASURING THE FREQUENCY OF A VIBRATING WIRE SENSOR USING A DIGITAL COUNTER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/007972
Kind Code:
A2
Abstract:
The present invention relates to a system for measuring the frequency of a vibrating wire sensor using a digital counter system, which measures changes in the length of a structure to monitor changes in the structure, comprising: a processor which outputs an excitation signal to an excitation signal interface unit for a vibrating wire sensor, and compares the counted value input from an external source with a consumed time to calculate a resonant frequency; said excitation signal interface unit for a vibrating wire sensor, which receives the excitation signal from the processor, converts the received signal into a form capable of generating an excitation, and outputs the converted signal; said vibrating wire sensor, which outputs an intrinsic vibration signal in response to the excitation signal; a received signal interface unit for the vibrating wire sensor, which receives an intrinsic vibration signal output by the vibrating wire sensor, converts the received signal into a signal recognizable by the processor, and outputs the converted signal to the processor; a signal-converting unit which converts the amplified intrinsic vibration signal into a digital signal; and a counter which counts the digital intrinsic vibration signal output from the signal converting unit and outputs the counted value to the processor.
Inventors:
KIM JONGMOON (KR)
Application Number:
PCT/KR2010/004304
Publication Date:
January 20, 2011
Filing Date:
July 02, 2010
Export Citation:
Assignee:
DS TEK CO INC (KR)
KIM JONGMOON (KR)
KIM JONGMOON (KR)
International Classes:
G01R23/02; G01H17/00
Foreign References:
| KR19990086076A | ||||
| KR100784985B1 | 2007-12-11 | |||
| US20080184800A1 | 2008-08-07 | |||
| JP2006029874A | 2006-02-02 |
Attorney, Agent or Firm:
DAWOOL PATENT AND LAW FIRM (KR)
특허법인다울 (KR)
특허법인다울 (KR)
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