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Technology for Hydrologic

Data Acquisition and Monitoring

Jongkook Lee, Ph.D

DataPCS, Korea

2003. 8. 27

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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

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Other interested areas

Introduction

☞ Realtime hydrologic watershed monitoring

☞ Realtime disaster prevention monitoring

☞ Realtime SOC monitoring and control

☞ Coastal / river / natural environment monitoring

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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

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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∼

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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

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Feature IV

It goes everywhere you want to be.

It moves anytime you want to do.

It glues anydevice you want to keep.

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Feature V

Remote sensing ground proof for calibration

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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

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Demonstration II

A compact wireless internet realtime datalogger

DP100

☞ DP100 + Water level sensor (Frontier project)

Water level sensor

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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

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감사합니다 .

Thank you.

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Introduction

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Introduction

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Introduction

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☞Realtime experimental watershed monitoring

(KICT, Korea Institute of Construction Technology, 2002 Present)∼

Realtime monitoring through PDA

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