September 2015 No.69
Japanese Infrastructure Newsletter

IDI QUARTERLYInfrastructureDevelopment

Institute—JAPANi-SENSOR Monitoring System(illustration provided by OYO Corporation) for the decontamination of the radiation con-C O N T E N T S
i-SENSOR Monitoring System
1. Needs for Monitoring

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2. Overview of i-SENSOR
3. Related Products of i-SENSOR

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4. Application Examples of i-SENSOR

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5. Notification and Recommendation

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Infrastructure Development Institute – Japan (IDI)
Suido-cho Bldg, 3-1, Suido-cho, Shinjuku-ku, Tokyo, 162-0811, JAPAN
Tel: +81-3-5227-4107 Fax: +81-3-5227-4109 E-Mail: idi17@idi.or.jp Homepage: http://www.idi.or.jp/english/00index.htm

Infrastructure Development Institute - JapanOYO i-SENSOR MONITORING SYSTEM
1. Needs for Monitoring
Nowadays, monitoring is required / demanded in various cases. Measuring ground deformation during
earthworks for safety, groundwater conditions for water resource management, river flow for flood
disaster prevention, etc. provides quantitative data for decision-making related to each background.
Beginning with “manual monitoring”, other methods such as “mechanical automatic monitoring”,“electrical automatic monitoring” were developed, finally evolving into “remote monitoring”.

Thischange has contributed to achieve more reliable monitoring and to reduce workload at the time of theequipment’s installation.

Therefore, the stakeholders’ diverse needs are now met more smoothly, andmonitoring is becoming increasingly easier for administrators to implement as its technique develops.
With the above as background, we, OYO, have released “i-SENSOR”, a user-friendly tool whichfacilitates easy and reasonable establishment of a remote monitoring system on site.

2. Overview of i-SENSOR
I-SENSOR consists of a data logger and transfer module, and any analog output sensor (4-20 mAoutput) can be connected to this equipment.

It has 4 features as shown below:
è Compactable Monitoring(1) All-in-one design(2) Data transmission and alert functions è Manageable Monitoring(3) Self-judgement function

è Reasonable Monitoring(4) Data transmission methodè Reliable Monitoring(1) All-in-one design for Compactable MonitoringAll-in-one-design makes it possible to use i-SENSOR immediately after installation, and to deploy iteasily and flexibly in a monitoring site because of its compact body.

Sensor (tiltmeter)
Combining

All-in-one (i-SENSOR tiltmeter)

Data logger and transmission

Figure-1

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Example of All-in-one Package

2Infrastructure Development Institute - Japan(2)

Data transmission and alert functions for “Manageable Monitoring”

A threshold value can be set to automatically change the data measurement/transmission interval andissue a warning.

When a measured value exceeds the predefined threshold, the self-judgment function

sends an e-mail alert to stakeholders and starts measuring at a shorter interval.

Figure-2

Image of Data Transmission and Issuing Alert(3) Self-judgment function for Reasonable Monitoring
In case of exceeding a preset threshold, followings are automatically activated:–sending an e-mail alert–changing measurement interval–changing data transmission interval–changing contact output
Below thresholds can be selected by users:–Rain gauge: hourly rainfall amount–Extensometer: movement velocity (mm/day) and accumulated displacement–Tiltmeter: tilting velocity (degree/day) and accumulated tilt

Ordinary time

Figure-3

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Image of Self-judgment Function

3Infrastructure Development Institute - Japan(4) Data transmission method for Reliable Monitoring
There are 2 types of data transmission for i-SENSOR: GPRS (General Packet Radio Service) on mobile
phone communication; internet using TCP/IP as a protocol.

The packet system provides for reliabledata transmission and ensures communication efficiency, whereas the internet connection enables aninteractive communication.

3. Related Products of i-SENSOR
Herein, we introduce the i-SENSOR lineup currently sold by OYO.
(1) GSM i-SENSOR 4.1ch
The “GSM i-SENSOR 4.1ch” is a data logger and transfer unit. Depending on their needs, users canchoose any analog output sensors (maximum 4 pieces) plus 1 rain gauge. Application examples are as
follows:–Meteorological station: e.g. rainfall, temperature, humidity, wind force–Flood: e.g. rainfall, river water level and quality–Landslide: e.g. rainfall, groundwater level, extensometer, tiltmeter–Safety control at a construction site: e.g. rainfall, tiltmeter–Environment: e.g. rainfall, water quality, atmospheric quality

Figure-4

Overview of “GSM i-SENSOR 4.1ch”(2) Rain Gauge + i-SENSOR
The “Rain Gauge + i-SENSOR” is a simple and reliable rainfall observation station.

When a solar

panel and battery are in use, a long life monitoring station can be set up taking minimum area.
only reasonable but also well suited for wide area monitoring with many observatories.

It is notApplication

examples are shown below:–Meteorological station: e.g. in municipality management area
–Flood: e.g. to complement existing telemetry stations along a river–Landslide: e.g. in watershed surrounding a target landslide–Safety control: e.g. in a construction site–Road management: e.g. along a managed road–Dam management: e.g. in catchment area of a dam
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Infrastructure Development Institute - Japan

Figure-5

Overview of “Rain Gauge + i-SENSOR”(3) Integral Water Level Meter
The “Integral Water Level Meter” is a compact and reliable remote monitoring equipment, especiallyeffective for groundwater monitoring using a drilled hole.
battery are combined in an all-in-one design.

The sensor, logger, transmission module andApplication examples are as below:–Groundwater management: e.g. in a water resource area–Flood: e.g. along a river at bridge piers and/or embankments–Landslide: e.g. in a landslide area
–Assessment: e.g. construction work impact at a site and its environment–Environment: e.g. influence from plant and waste disposal activities

Figure-6

Overview of “Integral Water Level Meter”(4) Stationary Inclinometer + i-SENSOR
The “Stationary Inclinometer + i-SENSOR” is, in contrast to conventional manual monitoring, astand-alone monitoring instrument.

The inclinometer is digital output and the lead-in cable is 1 line

only from a monitoring hole to i-SENSOR.

This simple layout enables quick and easy installation.

Application examples are as below:–Landslide: e.g. in a landslide area
–Safety control: e.g. at an excavated area or foot of a slope in a construction site

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Infrastructure Development Institute - Japan

Figure-7

Overview of “Stationary Inclinometer and i-SENSOR”(5) Slide Alarm + i-SENSOR
The “Slide Alarm + i-SENSOR” is a debris flow detection system.

A wire with the Slide Alarm is set

across a stream that is in a debris-flow-prone area, and if the debris comes down through the settingpoint and a certain stress is loaded on the wire, the sensor detects the phenomenon and issues an alert toits downstream.

The alert provides the residents in the affected area some evacuation time, the lengthof which depending on the distance between the setting point and the affected area.

Application

examples are shown below:–Debris flow: e.g. at a stream in a debris-flow-prone area
–Safety control: e.g. at a stream in the upstream of Sabo dam construction site

Figure-8

Overview of “Slide Alarm and i-SENSOR”

4. Application Examples of i-SENSOR(1) Landslide monitoring
In Kagoshima prefecture, signs of a landslide had appeared along a national road.

To properly carry out

traffic/road control for prevention of a disaster, the road administrative office decided to install
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Infrastructure Development Institute - Japan“Extensometer + i-SENSOR”.

The monitoring data was disclosed on a web site to share the information

with citizens and road users.
By sharing the data on the web site, the remote monitoring data is now utilized as a good communication
tool between the road administrator and users.

Such collaboration can provide more open and effective

disaster management.

Land slide along national roadØ News statement
Ø Criteria of road controlØ Diversionary routeØ Crack condition (extensometer)“Website of Kagoshima Office of National Highway”

Figure-9

Dissemination of Monitoring Data

(2) Groundwater monitoring
Groundwater monitoring was being planned on an offshore artificial land in Fukuoka prefecture, and“Water Level Meter + i-SENSOR” was applied.

The only access to the land at that time was via a small

ship or boat, but i-SENSOR provided a system which remotely transmitted continuous monitoring dataand made it unnecessary to come to the site for retrieving the data.
In such cases, the remote monitoring system “i-SENSOR” is very convenient for continued datacollection and enables properly timed instrument maintenance.
i-SENSOR

Water Level Meter

Photo: Kitakyusyu Seaport & Airport Development Office

Figure-10 Whole-view of the Monitoring Station
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Infrastructure Development Institute - Japan

5. Notification and Recommendation
Taking this opportunity, we herein introduce our remote monitoring system “i-SENSOR” a littlefurther.

Although the application fields are not limited to the above described cases, the monitoring siteshould be covered by a mobile phone network.

Also, it is noted that each country has its own

communications act, and necessary permissions for i-SENSOR should be obtained before the installation.
Of course, we can coordinate it with our distributors/agents which cover more than 20 countries in theworld.
Depending on site conditions, there are various types of configuration for the monitoring instruments,
and an appropriate deployment plan is quite important for proper monitoring.
experiences and knowledge about the remote monitoring.

OYO has plenty ofWe will be happy to provide you with ourreasonable consulting services for our products.

Contact
Ryo MIYAZAKI (Mr)OYO Corporation
E-Mail: miyazaki-ryo@oyonet.oyo.co.jp
TEL: +81-2985-15078
FAX: +81-2985-17290

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Infrastructure Development Institute - Japan

About IDI and IDI-quarterly
Infrastructure Development Institute (IDI)-Japan is a general incorporated
association operating under the guidance of Ministry of Land, Infrastructure,
Transport and Tourism of Japanese Government.
IDI provides consulting services for mobilizing International Assistance todeveloping countries, promoting international exchange of information and humanresources, and supporting globalization of project implementation systems targeting
both developed and developing countries in the field of infrastructure.
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If you are interested, send manuscripts to us following the instructions below.
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September 2015 No.699