Envirtech Sea-Gas Exchange Ecological Observation Buoy

8/8/2019 Envirtech Sea-Gas Exchange Ecological Observation Buoy

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Envirtech S.p.A.

Italy 16121 Genova - 37, Via XX SettembreGe/385031 - VAT IT03852470107

Capitale sociale 500.000 i.v.

Management :

Italy 17031 Albenga (SV) 69/2, Via Patrioti

Phone + 39 0182 559643

Fax +39 0182 570976

Branches:

Italy 00168 ROME 23, Via Cogoleto

Italy 30175 Venice 4A, Via Pacinotti

Italy 90135 Palermo 31-37, Via C. AmoreItaly 31020 Vidor (TV) , 6/8 Via Sartori

e-mail [email protected] www.envirtech.com

This document or parts of it cannot be used without permission by Envirtech S.p.A. that

will protect its rights.

Envirtech SpAVenice, 26th May 2009

Envirtech Code: 29120-REL-005

SEA-GAS EXCHANGE ECOLOGICAL

OBSERVATION BUOY

TECHNICAL PROPOSAL


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TECHNICAL PROPOSAL Code 29120-REL-005

Date 26/05/2009

Technical Description of Sea-Gas ExchangeEcological Observation Buoy

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INDEX

1 SYSTEM DESCRIPTION ...........................................................................................................................31.1 SYSTEM OVERVIEW ................................................................................................................................41.2 TECHNICAL DESCRIPTION OF THE PROPOSED SYSTEM ...............................................................................5

1.2.1 Surface Buoy .....................................................................................................................................61.2.2CTD ..................................................................................................................................................71.2.3Current Meter....................................................................................................................................81.2.4Nitrate Analyzer Sensor .....................................................................................................................81.2.5Hyperspectral ocean colour radiometer sensor...................................................................................91.2.6CO2 Sensor .....................................................................................................................................101.2.7Buoy Electronic Module...................................................................................................................101.2.8Battery Pack....................................................................................................................................111.2.9Mooring line....................................................................................................................................111.2.10 Satellite Modem...........................................................................................................................11

2 ASHORE DATA CENTRE........................................................................................................................133 ACTIVITIES..............................................................................................................................................14


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1 SYSTEM DESCRIPTION

The Sea-Gas Excange Ecological Observation Buoy is composed of:

A surface buoy body with a diameter of 3m; A Mooring line composed of mixed chain-cable and anchor;

Two acoustic releases in tandem configuration;

Nitrate Sensor;

CTD with Dissolved Oxygen, Turbidity Sensor and Fluormeter.

Hyper Spectral Ocean Color Sensor; Single point current meter; Meteorological station; CO2 sensor; Data acquisition electronics and battery pack hosted in a protective housing for

meteorological and underwater sensors data acquisition and data transmission.The block diagram with datalogger, sensors and related connections is depicted in the thisfigure.

ENVIRTECHTMF 500

Wind

Temp.Humid.

Bar.

Pir

GSM

GPRSUMTSHSDPA

CTD

Hyper Spectral

Ocean Color

Nitrate

SINGLE POINTCURRENT METER

GPS+SAT

N. 5 RS 232

O2

Flu

TurData acquisition,processing, storage platform

ANALOGUELINKS

SERIAL LINKS

RS 232

CO2

RS 232


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1.1 System Overview

The Buoy is equipped with:

Multiprobe:

CTDOxygen-sensitive electrodeThermohaline SensorTurbidityChlorophyll (Fluormeter)

2 moored acoustic releasesin Tender Configuration

GPSSolar PanelsRadar reflectorCompass

wind speedwind directionpressuretemperaturehumidityintensity of insolation

Hyper-spectral Ocean Color Sensor

Current meter

Nitrate

Lamp

Datalogger formeteo sensorsand wavemeasurements

Anchor Ligths

300 m depth

CO2


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1.2 Technical Description of the proposed system

Basically it is a surface buoy with a diameter of 3 m, integrating all sensors, datalogger,

communication system and battery pack connected through a metal line attached to a ballast by

means of a double release unit in tender configuration.

The buoy has 3 solar panels 50W each and batteries able to supply the buoy for continuously

30 rainy days (without sunlight) without affecting normal operations. The solar panels offered

are high efficiency, seawater corrosion resistant, anti-wind, wave, collision and scratch

resistance with long life.

Gel Battery pack is provided with 8x100 Amp hrs capacity. Power distribution system uses

solid-state charger and regulator to prevent over charging.

The Buoy is equipped with GPS System, radar reflector, light (3Nm of visibility range) and

compass. In case the buoy leaves a safety circle centred in the mooring position, an alarm is

sent automatically via e-mail and to dedicated phones.

The buoy is equipped with status sensors board to monitor:

battery voltage and current

internal temperature and pressure

water intrusion in the electronic/battery housings.

and to generate automatic alarm in case of detection of anomalous conditions.

Data acquisition, processing and data storage functionalities are provided by the data logger.

Moreover the communication devices allows the transfer of collected data to the ashore station

and the reception in real time of commands for configuration and data requests.

On the upper pole of the buoy the following sensors are installed: wind speed,

wind direction,

pressure,

temperature,

humidity,

radiance degree.

The wave height/direction sensor is integrated in the electronic unit.


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The CTD instrument (with Dissolved Oxygen sensor, Turbidity sensor and Chlorophyll sensor)the Current Meter, the Nitrate Sensor, the Hyper spectral Ocean Color sensor, the CO2 sensor

are fixed on the lower pole by means of dedicated clamps.

The 300m mooring line is composed of an upper short part of chain and the main part of

stainless steel cable plastic impregnated. The whole system is designed to operate up to 300m

water depth.

The sensors are equipped with a self-cleaning system than does not discharge any pollutants to

the surrounding environment.

The surface buoy is equipped with GPRS-UMTS-HSDPA modem to ensure the confidentiality

and reliability of the data transmission. This device implements a two-way data transmission,

with the ashore station. Moreover an Inmarsat MiniC satellite transceiver is integrated as back-

up communication system in case of alarm and unavailability of the GPRS coverage.

Buoy Light complies with relevant international standards of navigation lights buoys; the radar

reflector has a RCS of 10 m2 and the lamp has a range of 3 nautical miles.

Details of main components are reported in the following sub-sections.

1.2.1 Surface Buoy

The whole System is hosted in a steel buoy body with external marine-grade epoxy paint, anti-

corrosion, collision-resistant, long-term service, not easily attached by marine organisms; with

sealed compartment which can store a whole set of partial pressure of carbon dioxide (pCO2)

observation equipment and the other payload (datalogger, battery pack and

GPRS/UMTS/HSDPA modem).


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Surface Buoy

1.2.2 CTD

The CTD instrument in addition to the usual conductivity, temperature and pressure sensors

integrates also:

Fluorescence Chlorophyll Meter

Turbidity sensor

Dissolved oxygen sensor

The CTD is equipped with a RS232 interface and it is able to provide data with a rate of 20 sps.

For specifications, see the Compliance Sheet (Annex 4).


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1.2.3 Current Meter

The single point 3-axis current meter uses the most accurate and stable current measurement

techniques available today. The instrument incorporates an internal flux-gate compass and tilt

sensors to provide true current vector direction.

For specifications, see the Compliance Sheet (Annex 4).

Current Meter

1.2.4 Nitrate Analyzer Sensor

Envirtech Submersible Ultraviolet Nitrate Analyzer

provides real time, chemical-free nitrate calculations in

coastal and freshwater environments using advanced UV

absorption technology.

Nitrate Sensor

Nitrate sensor incorporates the proven nitrate measurement technology, which is in extensive

use worldwide. It is the latest advance in accurate and cost-effective nutrient

monitoring. Features include:


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Real time nitrate calculation

Full UV spectrum for maximum accuracy

Simple software based in-field calibrations

Includes easy to use Windowssoftware package

Nitrate sensor is the economical choice for routine nitrate measurements in virtually any aquatic

environment:

Lakes and rivers

Coastal estuaries

Drinking water reservoirs

Agricultural drainage systems

1.2.5 Hyperspectral ocean colour radiometer sensor

Hyperspectral ocean colour radiometer sensor is a precision optical sensor for applications where

performance, size and power are key constraints.This innovative Sensor provides 136 channels of factory calibrated optical from 350 to 800 nm.

Our hyperspecteral radiometers can be mounted on real-time profilers, moored on autonomous

deepwater buoys, autonomous underwater vehicles as well as on ships and airplanes for above-water

optic applications. Applications include hyperspectral determination of ambient above-water irradiance for

aquatic photosynthesys studies and bio-optical analysis of natural water bodies. Additional applications

can include estimations of ultraviolet radiation levels and hyperspectral measurements in agricultural and

foresty research.

Hyper Spectral Ocean Color Sensor


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1.2.6 CO2 Sensor

The offered sensor is a unique underwater carbon dioxide sensor solving the global problems of

the in-situ measurements of CO2. Applications include offshore inspections, green house

effects, oceanographic applications and water & waste water treatment tasks.

It is an High-precision optical analysing system maintenance free.

Dissolved CO2 diffuses from the liquid through a special silicone membrane (patented) into the

detector chamber (patented). The absorption of light depends on the gas concentration (CO2

molecules) and it is measured electronically

CO2 Sensor

1.2.7 Buoy Electronic Module

The buoy electronic module integrates the following main devices

CPU TMF500

SWITCH board

STATUS Sensors board

Tilt sensor board

Wirless LAN WiFi bridge for local wirless connection

GPS receiver

in a protective box equipped with marine connectors to interface the external sensors, WiFi

antenna, Satellite modem and GPS antenna.The software in the TMF implements the following functionalities:


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Acquisition of meteorological data.

Acquisition of sea wave data.

Acquisition of sea current data.

Acquisition of status sensors tilt and heading data

Transfer of sensors data to the Data Centre.

Logging of all collected data

It is written in ANSI C code. It is fully portable and can be adapted for different hardware

platforms. It can be updated in case additional functionalities are requested by the Customer.

This software can be updated via WiFi using a Laptop PC.

1.2.8 Battery Pack

The battery pack is placed in the central canister of buoy body where it is installed the housing

of the electronics unit. It consists of 8x100 Ah 12 V battery pack. Its capacity is 800 Ah, allowing

the system to be autonomous for much more than one year.

1.2.9 Mooring line

The mooring line consists of a 300m stainless steel plastic impregnated cable, a ballast of 4

tons (concrete and metal) and a double release unit in tandem configuration. The unit is

designed to allow the system to be released if at least one of the two devices works, with a

reliability of 100%. They are provided with their own independent battery pack with autonomy of

2 years.

1.2.10 Satellite Modem

The Satellite modem provides a reliable data link. The modem include a 12-channel GPS

receiver in one single unit that weighs 1.1 kg and is only 15 cm high with a diameter of 163 mm.


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Satellite Modem with GPS


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2 Ashore Data CentreThe offer includes the hardware and software facilities of the Ashore Data Centre. It is

composed of

- A computer Server Class for normal operation of data reception, storage, organization

in a Database and Visualization (processor core 2 Duo 2.0 GHz, 2G internal memory,

250GB hard disk capacity, 256 MB independent graphics card, CD-ROM / DVDRW);

- A portable computer (processor core 2 Duo 2.0GHz, 1 GB internal memory, 160GB

hard disk capacity, 256MB independent graphics card / CD-ROM Rambo);

- Color laser printer (A4 paper, 3600dpi resolution, 128M internal memory, 360MHz

processor and USB2.0 transmission);

- dedicated mobiles, batteries, antenna, protective pipelines and other necessary

equipment, as well as specific tools for on-site maintenance.


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3 ActivitiesThe activities included in the quotation are the following:A100 Management

A200 Mechanical customization

A300 Hardware customization

A400 Software desing/customization and Implementation

A500 System Integration

A600 - Internal test

A700 Technical Documentation

B100 Training and installation

C100 Data Centre Installation and customization of related software applications.

End of Document

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Envirtech Sea-Gas Exchange Ecological Observation Buoy