Actvity Based Lighting

MELLOW LIGHT – Far more than just a new office luminaire

MELLOW LIGHT from Zumtobel and the innovative ATIVO multi-zonal sensor met at exactly the right moment and in exactly the right circumstances during their intensive development cycles. Jens Beecken, Zumtobel Product Manager Controls & Systems, still remembers the early meetings with the development team for the new MELLOW LIGHT.

Active Light provides light with the right intensity and the right colour at precisely the right time. This approach takes inspiration from natural light and its dynamic development through the course of the day, which therefore helps to support the natural bio-rhythm in line with Human Centric Lighting. © Zumtobel

"You want a sensor that can recognise where someone is in the room? ATIVO will be able to do that - and a whole lot more!" These were the bold words of Jens Beecken, Zumtobel Product Manager Controls & Systems - ATIVO and MELLOW LIGHT, during one of the first team meetings. Since then these products have evolved into sparring partners, perfectly complementing each another to realise future-looking light solutions that turn the principles of Active Light into reality.

Active Light provides light with the right intensity and the right colour at precisely the right time. This approach takes inspiration from natural light and its dynamic development through the course of the day, which therefore helps to support the natural bio-rhythm in line with Human Centric Lighting. Active Light reflects the individual preferences of the user, maximising visual comfort for a variety of work tasks on a visual level while simultaneously promoting creativity and communication on an emotional level. In addition, thanks to the latest controls technology, pro-active lighting conditions based on the current activity and location of the users in a room can now be achieved. This Zumtobel "Activity Based Lighting" concept is really only possible with a sensor like ATIVO.

As well as being able to monitor the amount of daylight and detect general presence, ATIVO can gauge how many people are in a room. The innovative sensor can also pick up the pattern and frequency of movements in the space. © Zumtobel

"ATIVO is an intelligent multi-zonal sensor based on digital contrast monitoring. Digital technology opens up new options in comparison to the conventional infrared sensors that have traditionally been used," explains Jens Beecken. As well as being able to monitor the amount of daylight and detect general presence, ATIVO can gauge how many people are in a room. The innovative sensor can also pick up the pattern and frequency of movements in the space. Familiar disturbances such as heat sources, which have often flagged up the limits of infrared sensors, are no longer a factor. New functions for the digital sensor can be easily imported via software updates, while different workplace layouts are no longer a headache, as complex and tricky installation processes have been replaced by a quick and easy adaptation of the defined monitoring zones and gates.

ATIVO-Sensor from Zumtobel. © Zumtobel

Maximum flexibility is facilitated by a division of the rectangular detection area into a grid with 17 x 11 fields. These single units enable up to five movement zones per sensor to be defined in almost any shape and arrangement. The interfaces created by flipcharts, display panels and conference tables are particularly interesting for activity-based solutions. The monitoring of these "gates" provides crucial information about the number of people in the room and their specific movements, helping the sensor detect activities such as presentations and workshops. ATIVO then makes the appropriate lighting scenario available, depending on the particular situation and the specific task. Each ATIVO sensor covers up to five light measurement zones, in which the light quantity, for example at a normal workplace, can be maintained at a constant 500 lux.

An intelligent lighting management system and suitable luminaires are required to fully realise an activity-based light solution using data obtained from ATIVO, working together to adapt the light in terms of intensity, colour, direction and timing. The ATIVO multi-sensor, the LITECOM lighting management system and the new MELLOW LIGHT office light from Zumtobel represent one such unbeatable combination. ATIVO transmits information about light levels, presence, the location of the people and their frequency and movement patterns to the LITECOM controller, which is then compared with defined time entries. Based on this data, MELLOW LIGHT calls on integrated tunableWhite technology to provide situational lighting scenarios for activities such as meetings, presentations or concentrated deskwork. As a final step, colour temperature and intensity are continuously adjusted through the course of the day to provide optimum support for the human bio-rhythm and to help promote wellbeing through light.