Browse > Article
http://dx.doi.org/10.5762/KAIS.2020.21.10.16

Development of Trigger for Signal Storage Reflecting the Behavior Characteristics of the Free-Fall Cone Penetration Test System  

Kang, Hyoun (Korea Institute of Ocean Science & Technology)
Shin, Changjoo (Korea Institute of Ocean Science & Technology)
Kwon, OSoon (Korea Institute of Ocean Science & Technology)
Jang, In Sung (Korea Institute of Ocean Science & Technology)
Baek, Seungjae (Korea Institute of Ocean Science & Technology)
Seo, Jung-min (Korea Institute of Ocean Science & Technology)
Won, Sung Gyu (Vibroacoustics Total Solutions)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.10, 2020 , pp. 16-22 More about this Journal
Abstract
The Korea Institute of Ocean Science & Technology is developing a free-fall cone penetration test system (FFCPT) that can acquire the characteristics of the seabed surface soil. To obtain the data through the FFCPT, a method of storing the signals for the entire time or a method of storing the signal for user-defined time can be considered. For efficient data storage and management, it is advantageous that data be stored by user definition. Therefore, this study analyzed the basic behavior using the signal acquired through a sensor mounted in the FFCPT and developed a trigger method to recognize the start and end of data storage using a depth sensor. The start and endpoints of the fall were determined using the moving average difference of 3 and 0.03 seconds of the depth signal. A real sea-trial test was performed using the FFCPT, and the developed trigger was operated normally.
Keywords
FFCPT; Trigger; Data Storing; Moving Average; Depth Difference;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Jung-min Seo, Changjoo Shin, OSoon Kwon, In Sung Jang, Hyoun Kang, Sung Gyu Won, "Estimation of Penetration Depth Using Acceleration Signal Analysis for Underwater Free Fall Cone Penetration Tester", Journal of Ocean Engineering and Technology, Vol. 34(2), Articles in press, 2020. DOI: http://dx.doi.org/10.26748/KSOE.2019.076
2 Changjoo Shin, Sung Gyu Won, OSoon Kwon, In Sung Jang, Jung-min Seo, Hyoun Kang, "Estimation of Ground Penetration Depth for Underwater Free Fall Cone Penetration Tester", Proceeding of Korean Marine Robot Technology Society, Seoul, South Korea, pp.62-64, 2019.
3 Brian Keith Russell, Paul Benjamin Mallinson, Stephen Christopher Kent, Christopher Michael Solomon, "Impact Detection System.", U.S. Patent No. US 8,079,247 B2, Dec. 20, 2011.
4 James E. Child, Amrita Kumar, Shawn Beard, Peter Qing, Don G. Paslay, "Impact Detection and Analysis/Health Monitoring System for Composites.", Proceedings Volume 6222, Sensors for propulsion Measurement Applications, SPIE, May 2006. DOI: https://doi.org/10.1117/12.669525
5 Craig J. Brown, Stephen Smyth, Arnold Furlong, Glen King, Gerard Costello, Patrick Potter, Jeffrey S Melton, "A Synergistic Approach to improve Multibeam Backscatter Classification Methods for Geological/ Habitat Mapping", Hydro 2010 Conference, Rostock, Germany, 2010.
6 Rogers, D. J., Fundamental of Cone Penetrometer Test (CPT) Soundings. Missouri University of Science and Technology, 2011, Available From: https://web.mst.edu/-rogersda/umrcourses/ge441/CPT-Soundings.pdf (accessed June, 2020)
7 T. Lunne, P.K. Robertson, J.J.M.Powell, Cone Penetration Testing in Geotechnical Practice, E&FN Spon, 1997, pp16-18.