Zakład Automatyki I Urządzeń Pomiarowych AREX Sp. z o. o.

DIMaC-EK

DIMaC-EOR

DIMaC-SO

DIMaC-SOT

DIMaC-SP

DIMaC-SA

CESTER

DIMaC-OM

ASTRUD

ASTRUD-P

DIMaC-DMS

catalogue card in PDF

The DIMaC-OM system has been designed to control street lighting systems. The system provides optimum lighting control and minimises the costs of power consumption and lighting system use. Owing to remote monitoring, full control of the dispersed lighting system is possible.

The system stands out above similar solutions because its lighting control algorithm takes into account changes of illumination measured with a luminance camera. Moreover the astronomical clock fitted in controllers of switchgears does not require any revisions due to seasonal changes. Importantly, the system features the automatic synchronization of times in all lighting switchgears in a city.

Functions

DIMaC-OM:

    - automatically controls lighting on the basis of the natural light intensity,
    - synchronises the switching on/off of the lighting in selected areas,
    - changes parameters of the automatic mode algorithm remotely (from the centre),
    - controls lighting remotely on demand,
    - controls lighting locally,
    - monitors all the lighting switchgear in the system
    (measurement of voltages, currents, protection and contactors status, control of the open switchgear door, control of lighting fittings status),
    - presents street lighting status in the Control Centre and in system computers with the WizAr visualisation software,
    - archives events (such as the switching on/off of the lighting, change of working mode),
    - archives alarms (e.g. unauthorised access to the switchgear, fuse activation).

Structure

RSOU lighting switchgears are the basic element of the system. They come in two types:

RSOU-B base switchgears which communicate with the Centre,

RSOU-P basic switchgears which use the base switchgear to communicate with the Centre.

RSOU Switchgears

Standard RSOU switchgears may supply from one to ten lighting lines.

The following operation modes are available:

1.Automatic control - based on the InteLite algorithm
2.Remote control - i.e. the switching on/off from the Centre
3.Overriding with "BOCZNIK" (a contactor bypass) in the switchgear irrespective of the controller operation.
4.Individual manual switching off lighting lines with protection triggering (RBK)

Principle of operation

The basic requirement for a city lighting system is to provide the minimum acceptable values of light according to applicable standards. Such a requirement has to be fulfilled irrespective of weather and local terrain conditions. This condition is connected with the required reliability of the lighting system appliances, in particular the reduction of downtime to a minimum.

The abovementioned requirements have to be fulfilled unconditionally. Safety and functionality are provided with the suitably long period of the switching on action. Unfortunately this practice may be contradictory to economic considerations, especially as modern lighting systems are also required to cut lighting operating costs.

One of the basic methods of cutting costs in a lighting system is to limit its operation time, however never below the safety minimum.

Visualisation software for the city lighting control system

The WizAr visualization software developed by AREX is used for the presentation of the current status of city lighting systems, change of settings, browsing through archive data, system configuration and communication connections. The software makes data available to the appropriate operators' stations. The data are collected from the server working at the Control Centre and therefore a number of desks use the same set of data. Dispatch desks may be connected to the server via the local company network or the Internet.
The use of the server working as a proxy significantly reduces the quantity of data sent in the system.

For the system, the priority is informing the operator about faults. The area suffering from the fault is shown on the city map displayed on the computer monitor. Selection of a sector marked with red magnifies the area and makes it possible to identify the broken switchgear, cable line or lighting fitting.

Visualisation screens show information on the actual system time, general status of the lighting control system and the operator's rights. The software facilitates archive browsing and changes in system configuration. For every switchgear a diagnostic screen has been provided, presenting electric diagram with currents and voltages as well as the settings and archive fields. Symbols of apparatuses and devices present their status at a given time. There are also keys for remote control of the lighting.

Arex 1989 - 2008