Environmental Data Acquisition System
The concept behind EDAS is to provide Environmental Data collection systems
using distributed computer processing and saving the results in a standard
database format thus making use of modern computer networking technology..
Single PC systems tend to be legacy designs that have evolved around existing
equipment, probably having been added to at various times in their history and
almost certainly the result of ad hoc software updates and changes. The basic
concept of a single PC acting as a central data collection and display point has
proved to be a very cost effective solution to the problem of collecting and
recording environmental data
Standard Sensor Interface
The standard EDAS system represents a compact method for the collection of
live environmental data for operational use in ports and harbours. The system
integrates the data from a serial Tide Gauge device with a solid state weather
to provide a complete harbour Metrological station in a single PC unit.
Data from the system can be output by a variety of means to the EDS software
|Direct Serial Cable|
|Radio Telemetry systems|
|Ethernet using TCP/IP |
Legacy Sensor connection
A customised EDAS interface box provides a means
for the connection and digitization of a range of digital and non-digital environmental
transducers. The interface uses a low power voltage source (12v)
and converts data from the transducers to a one second burst of
serial RS232 format data for input to the EDS software.
|Wind Speed||Rugged 'Porton' design Anemometer
with certified three-cup vane
|Wind Direction||Rugged 'Porton' design Wind Vane
with optional magnetic bearing unit
|Air Temperature||Solid State precision sensor
housed in a standard vented screen
|Rain Gauge||Incremental 'Tipping Bucket' rain
EDAS Software Concept
The EDAS software package is several multi-tasking programs designed
for use with Windows95 or Windows NT4/2000/XP operating systems. The
software provides the data capture and display functions for use
with the EDAS hardware and environmental transducers. The system consists of
three main program elements ...
|VTSclient - Multiple sensor/location display for Port VTS users|
|EDSclient - Network display client for current EDS data|
|EDS - Data collection Server and filtering software|
EDS - Data Collection Server
The EDS program allows the user to connect to various sources of
environmental data, filter the incoming values and save in an ODBC compliant
database such as MS Access or SQLserver. The program also acts as a server
transmitting processed data as small UDP packages at 1 minute intervals across a
TCP/IP network. The user can configure the display content, size, colour and
scaling of various display types using splitter bars and configuration icons.
Each configuration can be saved and used as a default for booting the software
when run from a power up or reset. Data is exported into ODBC compliant
databases for subsequent retrieval using standard database software.
EDAS Software (Main Screen Display).
|Windows Compliant||Designed for 32 bit Windows 95
and Windows NT4/2000/XP environments
|Wind Radar Display||Unique scatter plot display
of previous 2 minutes wind vectors gives a helpful
display of wind strength and range .
|Calculated Data||Display of calculated data such
as mean wind direction and speed together with 10 minute gust.
|Recent History||Double clicking any window will
present a list box with a history of the previous 24
hours data for that parameter
|Variable Formats||Windows can easily be
customised to show text, bar graph or time series graphs
of selected data type.
|Splitter Bar Layouts||Use of multiple splitter bars enables user to scale and size windows to their own
requirements and save settings
|Toolbar Icons||Easy selection of data dialog
boxes using icons with helpful tooltip prompts
|Colour Options||Fully selectable background,
foreground and text colours to customize displays to
VTS - Multiple sensor display
The VTS software is passive client designed to sit on a network and listen
for messages transmitted by various versions of the EDS software package.
Typical applications of this software would be to display Tide data from several
locations at once in a Port/Harbour control office also known as VTS.
Typical VTS display of multiple gauges in S.Wales
EDSclient - Multiple location display
The EDSclient software is passive client designed to sit on a network and
listen for messages transmitted by various versions of the EDS software package.
Typical applications of this software would be to display a copy of the data
being captured by the EDS software for a particular location.
Typical EDSclient showing multiple locations
Reference site - Port of Southampton(UK)