Category Archives: Electrical Engineering

Schréder Owlet Nightshift – Telemanagement system

  • Website: http://owlet-streetlight.com/
  • Owlet uses ZigBee (2.4 GHz) for data transfer. The ZigBee wireless connection has a guaranteed distance of 100m.
  • The system is controlled with a simple web interface, which is actually a cloud application. Two types of users can be defined: Administrator and Standard user.

Owlet Nightshift - Web Interface

  • OLC (Outdoor Luminaire Controller)
    • LuCo-NX (Luminaire Controller Next Generation) – controls a single lamp. The LuCo-NX is meant to be fitted directly in the luminaire.
    • CoCo (Column Controller) – Ideal if more than one load is attached to a pole i.e. festive lighting (εορταστικός φωτισμός).
  • SeCo (Segment Controller)
    • The SeCo collects data from the OLCs.
    • The link between the OLCs and the web interface.
    • The  SeCo is connected to the internet via a 3G network.
    • A SeCo controls one segment with up to 150 luminaire controllers.
    • Light points can be organized in groups (i.e intersections, main roads, crosswalk, etc.).

Example

Total number of luminaires: 370 (Schréder TECEO 32LED/51W, Schréder GL2C 16LED/19W)

We may have 3 Segment Controllers (SeCo). Each SeCo is equipped with a SIM card so as to connect to the 3G network:

  • First Segment: 140 luminaire controllers
  • Second Segment: 140 luminaire controllers
  • Third Segment: 90 luminaire controllers

Another similar telemanagement system for monitoring, controlling and measuring street lighting systems is Philips City Touch.

REFERENCES

[1] www.schreder.com

[2] http://owlet-streetlight.com

www.ece.nu

Elfack 5-8 May 2015

Elfack is the Nordic region’s largest meeting place where the entire electricity industry shows its new products and solutions to around 25,000 visitors. At Elfack you can explore specific areas or expand your horizons with insights into other parts of the industry.

REFERENCES

[1] http://www.elfack.com

www.ece.nu