One of the biggest retrofit implementations of Bluetooth mesh lighting control to date has been unveiled in Brussels.
The retrofit project – at the headquarters of software developer Macq – comprises the deployment of a 360-node network.
The 2,000 square metre office building, located on Rue de l’Aéronef, includes multiple open spaces, meeting rooms and studios, as well as storage rooms, parking spaces, restrooms and corridors.
The retrofit covered the entire building. As part of the project, the obsolete lighting was replaced with LED luminaires, while simple wired controls were replaced with a wireless control system based on Bluetooth mesh.
The scheme involved over 300 LED fixtures and controllers from DG Light with
59 occupancy and light sensors from Danlers.
The luminaires deployed during the retrofit are standard devices without any wireless control capabilities. The component that provides them with Bluetooth mesh connectivity is the fixture controller DG558 from DG Light. It is a simple device that contains a system-on-chip with the firmware from Silvair.
Equipped with a driver output port, the controller converts Bluetooth mesh com- mands to a DALI output, enabling rapid retrofitting of existing LED systems into Bluetooth mesh lighting networks.
The lighting control system installed at the Macq office doesn’t include any wireless switches. The company decided to deploy a fully automatic solution driven by occupancy and light sensors to maximise efficiencies through advanced lighting control strategies.
To minimize office downtime, the project was implemented throughout a single weekend. The LED retrofit itself, carried out by an external company, started on Friday afternoon.
With no need to install any wires or disrupt the existing building infrastructure, installation works ended on Saturday evening. This is when the commissioning process started.
The commissioning was carried out by French specialist 8’33 using the Silvair commissioning tools. The entire wireless lighting control system was planned in a dedicated web app that allows for performing initial commissioning activities remotely before visiting the site.
Once the planning stage was completed, the commissioning process was finalised on-site using the mobile app.
Due to the architectural diversity of the Macq office, more than 50 lighting zones had to be created during the planning stage.
A number of different lighting control scenarios were deployed across individual rooms and types of spaces. Still, with a library of ready-to-use profiles and scenarios available in the Silvair app, the commissioning process was completed by the end of the weekend.
On Monday morning, when the first employees arrived to the office, the lighting control system was fully operational.
For all zones established across the Macq office, two major lighting scenes were set up. The first one kicks in at 6 am, ensuring light levels adequate for everyday office work. The second one is triggered at 10 pm. Its light levels are lower, reflecting less demanding lighting needs during occasional night-time office activities.
Both these scenes rely on the occupancy sensing scenario that has been implemented across the entire office.
In addition, daylight harvesting was implemented in rooms and areas with access to daylight.
In order to put the luminaires on a schedule, as well as to support advanced monitoring capabilities, a gateway device was also deployed.
It gathers and aggregates energy consumption data from individual zones, delivering it in the form of raw numbers or convenient visual heatmaps. This allows Macq to analyse historical power consumption over desired periods of time, and put that data to work to optimise lighting efficiency even further.
- Learn more about Bluetooth mesh lighting control at the Workplace and Wellbeing Conference, taking place at the LuxLive 2019 exhibition at London ExCeL on Wednesday 13 November and Thursday 14 November 2019. Entry is free – see the full programme and register for free HERE.