Better light for better quality of life
People today tend to stay indoors with artificial lighting, and many work shifts or in windowless buildings. Therefore daylight light levels and how they change, as well as the darkness of night, lose their effects on people, who move ever further away from their natural rhythm.
This has consequences: too little daylight can lead to people’s body clocks going off track, or their sleeping and waking phases becoming less well differentiated. Both these factors have a negative effect on biorhythms, and can affect health.
Circadian lighting is aligned with the natural day-night rhythm (circa = around, dies = day), with one cycle lasting 24 hours. Biologically effective lighting should be tuned to the user’s circadian rhythm, and must intelligently support both naturally active times and periods of rest in the course of the day. PureColour occupancy detectors use the control of non-visual effects of light to bring the dynamics of daylight indoors. They can gently and unobtrusively support users’ performance and wellbeing.
WORLD FIRST – DALI occupancy detector with HCL function for biodynamic light
We are the first manufacturer to have developed an occupancy detector with “Tunable White Function”. The detector regulates the colour temperature of the white tone in the room to provide the most beneficial influence on people’s biorhythms.
The PD4-M-HCL is the new DALI occupancy detector with “Tunable White” function for Human Centric Lighting (HCL). Like other DALI occupancy detectors, this detector regulates different lighting groups according to daylight and occupancy, to increase convenience and energy efficiency. A new feature is that the detector can also control the colour temperature in the room if DALI lights with “Tunable White Function” (Device Type 8) are connected.
Preset application profiles can be selected according to the room’s current usage. These profiles control the colour temperature and light level in the room as the day progresses. The change in the colour temperature from warm white to cool white and the change in light level conform to human biorhythms. This takes place very slowly, and is hardly apparent to the user. This kind of biodynamic light is proven to increase wellbeing and has positive effects on health. There are numerous applications for biodynamic lighting control in offices and industry.
The introduction of this technology into schools and healthcare institutions also achieves positive effects. Biodynamic light is especially good in retirement homes, where it can help regulate the human body clock and significantly improve the quality of sleep.
While other HCL controllers often require a complicated building-wide control system, the B.E.G. detector works completely independently thanks to its integrated real-time clock and DALI controller. This means each room can be individually configured. The detector supports up to 4 DALI lighting groups and 3 pushbutton inputs. The DALI lights are quickly and easily grouped using the bidirectional B.E.G. smartphone app. The PD4-M-HCL is thus ideal for retrofitting or refurbishment work in buildings where there is no bus system. Thanks to a large detection area of 24m, it can be installed effortlessly in areas with up to 64 DALI lights.