In a recent move, the Ujjain Nagar Nigam, with the help of an Indo-Belgian joint venture, Keselec Schréder, has provided remotely controlled smart LED streetlights at Agar Road in Ujjain. The technology used here is the OWLET Telemanagement System. The company has installed close to 250 Voltana LED luminaires integrated with its OWLET Telemanagement System.
The streets of the Cyberpark in Kozhikode too have been lit by Schreder’s Teceo LED luminaires fitted with the OWLET remote management system which enables each luminaire to be monitored, controlled, metered and managed from anywhere in the world.
A LuCo controller is installed in each luminaire while the SeCo segment controller manages all the LEDs in the luminaires via the ZigBee open communication protocol. Any of the Teceo luminaires can be switched on or off or dimmed at any moment. They can send reports via e-mail or mobile telephones, detailing their performance the previous night.
How the OWLET Telemanagement System works
Owlet is a telemanagement system for monitoring, controlling, metering and managing outdoor lighting. Based on open technologies, it saves energy, reduces greenhouse gas emissions, improves outdoor lighting reliability and lowers the maintenance cost.
Operating state, energy consumption and failures are reported and stored in a database with exact timestamp and geographical location.
Each LED luminaire is fitted with a Lumen Controller (LuCo) which is controlled by a central master controller named Segment Controller (SeCo).
The Lumen Controller interacts with the segment controller via wireless technology (ZigBee). Each segment controller controls about 120 luminaires. Each individual light point can be switched oﬀ/on or dimmed at any time. With the use of the Internet, all the prescribed data of the luminaire is stored in the central server and dimming/on/off commands can be executed in seconds from across the globe.
According to Tom Mathew, the Electrical Project Engineer who is associated with the Kozhikode Cyberpark, the system enables the saving of a large amount of energy through the effective utilisation of a dimming mechanism to reduce the consumption of power.
He says, “At Cyberpark, we have set the output to 60 per cent on Sundays, while on working days, the pattern is 100 per cent output from 6.30 pm to 10 pm and 60 per cent from 10 pm to 6 am.”
Meanwhile, this is the first intelligent lighting system in India provided by Schreder.
Key benefits of the OWLET Telemanagement System
- Power saving
The luminaire will be turned on and off as per the schedule time defined, so no energy is wasted for late turn-offs of streetlights;
- Constant Lumen Output (CLO)
The luminaire maintains a constant lux level on the road throughout its life and eliminates
over-lighting of roads;
- Fixed Dimming of LED Luminaire
The luminaire is defined with a predefined dimming cycle to save energy during hours with less or no traffic (i.e., the luminaire can be dimmed to 50 per cent from 11 pm till 4 am to save energy);
- Instant Alarm Management (alarms for power theft, faulty luminaire)
The SeCo sends a command signal to the user when the luminaire consumes more power (due to a faulty luminaire) or if there is power theft from the luminaire;
- Monitoring of the Luminaire data (on/off, etc)
The user gets a regular update of each individual luminaire to check if the luminaire is off, the dimming percentage, the life of the control gear or the lamp so as to maintain the inventory for maintenance cycle);
- Metering of Electricity Consumption
The user is regularly updated with the energy consumption of the individual luminaire so as to monitor the electricity usage and methods to effectively use it;
- Light on Demand
Any luminaire can be switched on/off or dimmed to any levels as per the requirement from across the world.
- Location with Google Maps
A faulty luminaire can be easily located as all the luminaires are visible on Google Maps as per their coordinates.