2003/8/27 1 Technology for Hydrologic Data Acquisition and Monitoring Jongkook Lee, Ph.D DataPCS, Korea

2003/8/27 2 Introduction  What is the technology for hydrologic data acquisition and monitoring?  Motivation (1997) ☞ Seohae Grand bridge realtime scour monitoring  Goal ☞ Wireless realtime hydrologic monitoring technology development for a researcher level

2003/8/27 3  Other interested areas Introduction ☞ Realtime hydrologic watershed monitoring ☞ Realtime disaster prevention monitoring ☞ Realtime SOC monitoring and control ☞ Coastal / river / natural environment monitoring

2003/8/27 4 Feature I  What is the difference compared with the regular methods (phone to phone or dedicated wire connection) ? ☞ Wireless Internet ☞ Perfect glue service of PCS wireless network + High speed wired internet

2003/8/27 5  Synchronized realtime data acquisition from multiple services Feature II ☞ Old dedicated wireless telemetering (VHF)  Each node 1 sec took  250 nodes 250 secs took ≒ 4 mins 10 secs ☞ Wireless Internet telemetering (PCS)  Each node 5 ∼ 10 secs took  250 nodes 5 ∼ 10 secs took

2003/8/27 6 Feature III  Nearly realtime services possible  Server size ☞ Small enough fit in a desk top  Hassle-free (network service : commercial) ☞ User only care  Remote data logging systems  A server

2003/8/27 7 Feature IV  It goes everywhere you want to be.  It moves anytime you want to do.  It glues anydevice you want to keep.

2003/8/27 8 Feature V  Remote sensing ground proof for calibration

2003/8/27 9 Demonstration I  Hydrologic realtime monitoring ☞ Realtime rainfall measurement ☞ Realtime water level measurement ☞ Realtime water quality measurement ☞ Realtime AWS ☞ Realtime evaporation, soil moisture measurement ☞ Realtime wireless watershed webcam ☞ Wireless Internet + PDA + WEB Wireless Internet + PDA + WEB

2003/8/27 10 Demonstration II  A compact wireless internet realtime datalogger DP100 ☞ DP100 + Water level sensor (Frontier project) Water level sensor

2003/8/27 11 Demonstration III  Realtime coastal observation network ☞ From Ssangjungcho light tower deck at Ullungdo ☞ More than 30 realtime observational parameters  Observation station  Wave and Tide measurement  AWS measurement  Coastal water environmental measurement  Lantern operation measurement

2003/8/27 12 감사합니다. Thank you.

2003/8/27 13 Introduction

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2003/8/27 18 ☞ Realtime experimental watershed monitoring Realtime experimental watershed monitoring (KICT, Korea Institute of Construction Technology, 2002 ∼ Present) Realtime monitoring through PDA

2003/8/27 19 Realtime monitoring through WEB

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