Human-Centric Lighting (HCL) mitigates unhealthy side-effects of unnatural light in the workplace.
The HCL feature controls brightness and color temperature over the course of the day in a room, multiple rooms, floor, or entire building. The goal is to positively influence the well-being of the room occupants.
Brightness and color temperature follow two independent graphs, represented by schedulers, over a 24-hour cycle. No standards exist for such graphs, preferably these are provided by the light planner. Desigo provides HCL schedulers configured per default to approximate the natural course of a day.
HCL standard schedule
Key:
00:00 - 00:00 | Time |
| Brightness |
| Warm white |
| Transient |
| Cold white |
The standard application type CenFcnt11 has an option for Human-Centric Lighting (HCL), serving as infrastructure to optimize the engineering workflow.
The central application function CenHcLgt11 serves as an interface for the HCL values from the superior automation station. CenHcLgt11 preprocesses and then commands the information via grouping for the HCL functionality in the room.
Lighting brightness adaptation and color temperature
The application function LgtHcLgt11 enables the programming of the human-centric lighting functionality for the lighting AF (Lgt11). It calculates the necessary values for the brightness adaption and provides the color temperature setpoint to the lighting output device. It works together with the other room and central lighting functions.
The AF receives the lighting brightness adjustment value and the lighting color temperature setpoint from a superior function like schedulers or a superordinate central function (AF CenHcLgt11). It calculates a switch-on value and a brightness adjustment factor for the other lighting AFs.
For more information, see the course: Desigo Room Automation – Engineering of Human Centric Lighting.