Bosai Solution ID : JBP00049

Water Monitoring Sensors for Preventing/Mitigating ofFlood Disaster
Realization of prevention/mitigation of flood disasters in rivers and dams byusing reliable water sensors.

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Hazard
Tsunami Cyclone Storm Surge Flood

Solution Purpose
Prevention & Mitigation Preparedness Response

Solution Theme
Research & Investigation Risk Assessment Infrastructure Technology Information & Communication
Technology Products & Goods

Technology SubjectFeasibility Study Risk Monitoring River & Basin Dam & Reservoir Sabo Port Essential Utilities Urban
Information Gathering Information Analysis & Judgement Information Communication Information
Platform Machinery & Equipment

Advantages
Our water sensors have high reliability which is composed of high accuracy and durability, and lineup
which is selectable depending on purpose and site conditions. These sensors can contribute to flood
forecasting/warning and appropriate gate operation in rivers and dams in order to privent and mitigate
the flood disasters.

Solution Illustrated
Proposal and provision of reliable water sensors which are selectable depending on purposes and site
conditions

Background
Using reliable water sensor is fundamental and important for appropriate flood warning/forecasting ofrivers and dams. Because, some errors will bring inappropriate cognizance and operation, furthermore
these may add serious flood damages.
We can provide such reliable sensors which have been improved based on experience of on-site
operation at rivers and dams in Japan and Asian countries past 50 years.

Exposition of the Solution
1. Water Level Gauge
We have lineup of sensors which can be selected depending on purpose, needs and site conditions ofriver and dam (accuracy, range, installable condition, durability and cost etc.) Especially, our sensor'saccuracy, stability and durability can contribute to accurate and appropriate monitoring/control of riverand dam.
1) Quartz type: High accuracy and durability, wide measurement range
2) Fiber-optic quartz type: High lightning protection by using fiber optic for sensor signal line
3) Others: Pressure type, Ultrasonic type, Radar type etc.
2. Gate Opening Indicator
We have lineup of indicators which can be selected depending on purpose, gate type/conditions and＜ Downloaded from www.bosai-jp.org ＞

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1) Wire-messenger type: Easy installation for existing gate2) Shaft rotation type: Secure measurement by connecting to gate hoist3) Limit switch box: High accurate detection of gate position
4) Peripheral devices: Signal converter, Data display etc.

Achievements of Examples
Clients in Japan- Ministry of Land, Infrastructure, Transport and Tourism (MLIT)- Ministry of Agriculture, Forestry and Fisheries (MAFF)- Japan Water Agency (JWA)- Japan Meteorological Agency (JMA)- Local governments- Electric companies (TEPCO, KEPCO etc)
Clients in overseas- Vietnam (EVN)- Myanmar (MOAI)- Indonesia (PU, DPU-DKI etc)
- South Korea (MOLIT etc)
Application system of our sensors- Flood forecasting and warning system, Dam control system

Corporate Profile
Takuwa Corporation
1-4-15 Uchikanda, Chiyoda-ku, Tokyo 101-0047, Japan Tel. : +81-3-3291-5380
 E-mail : e-info@takuwa.co.jp
 Website : https://www.takuwa.co.jp/en/index.html＜ Downloaded from www.bosai-jp.org ＞

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