info@data-transfer-systems.co.ukData Transfer Systems is a Devon based business specialising in web based telemetry systems.
The
source of the data can be devices such as muti function power
meters monitoring you mains and sub mains, it could be water, gas or
other meters, or it could be temperature or other sensors.
The
destination for the data could be anywhere in the world as the data is
transfered over local area networks (LANs) and the internet. All that
is required at the destination end is a standard internet enabled
computer, no special software is required.
At the head of our
system is a standard computer that runs a web sever and the meter reading and logging software.
There are available on the
market electrical power meters to monitor mains incomers and sub-mains
which by measuring the current, voltage and phase angle derive many
other values of interest to energy managers and engineers, these
can be read over a local area network
or the internet using a protocol called TCP IP MODBUS. Also
'pulse
output' meters such as gas, water, and simpler electricity meters can
have their signals marshalled by a programmable logic controller (PLC)
and also transmitted over a network in the same way.
The head computer
communicates with the meters and runs a web server making
all this data available to other computers on the network using
their web browsers. The most recent data can be viewed,
and historical data downloaded as Excel spread sheets.
Example Mimic of a Multifunction MeterThe head computer runs Linux as the operating system with an Apache web server.
The
software that
handles the TCP IP MODBUS and updates the web pages is written specially for every installation and requires no setting up by the
customer this allow the customer to have the functionality of the
software customised to match their requirements. All software is
released as 'open source' so there are no software licences required.
The Linux operating systems runs from a bootable CD so no corruption of the operating system or the software can occur. The hard drive is only used for data storage. If desired two hard drives can be fitted to duplicate the data storage for enhanced reliability.
Contact:
info@data-transfer-systemc.co.uk
