LDK's Monitoring System

ENERinTOWN — Mon, 01 Sep 2008 16:19:56 GMT

LDK’s Monitoring System

The purpose of the ENERinTOWN monitoring system was to allow continuous transmission of energy data from each site to a central database via the internet and to enable the Energy Managers in reviewing the energy performance of monitored buildings via a web-based management tool.

The system designed and implemented in Greece, included a combination of serial communication for on-site data collection and internet protocols for the transmission of data to the central database and the Municipal Management Tool. In brief, the technical solution comprised:

LV Electricity Meters with digital pulse input facility
Reed switches to generate pulse from the gas meter
Recorded data (electrical & gas volume) were transferred via serial communication (RS-485) to a local PC
An RS-485 to RS-232 conversion (and signal amplification where required)
An in-house data acquisition SW was used for the data collection, local storage and transfer to the database
Local PC running Win 98 (and higher) connected to the internet (via LAN or ADSL) was the site-specific data concentrator
Energy Data (15 min.) were recorded on a daily metering file and transferred to the central database via the internet.
Data were stored both at the Municipal Management Centre and the mirror database of the Energy Management Software (Security)
All data available at the database are accessible via the web-based Energy Management Software which generates standard reports.

The operation of the data acquisition is quite simple and tailored-made to suit the type of electricity meters that were decided to be used for the EnerInTown project. Basically the programme performs the following activities:

Interrogates electricity meters in accordance to their user-defined address
Acquires and stores all available recordings for a specified interval (i.e. 15 min)
Sends the collected data on a defined schedule either by email or by uploading it to a suitably modified database (via ftp protocol)

The Municipal Management Tool (MMT) has been designed in such a manner to be as comprehensive as possible to its prospective users. This means that the MMT intents to deliver the correct consumption signals that are considered meaningful for the monitoring of the buildings.

The LDK - EMIR Tool can be accessed here

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LDK's Monitoring System