Lighting Controller Mapping Circadian Rhythm to User Position
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Solution Overview
Problem
Existing lighting control systems do not effectively consider the impact of light settings on a user's circadian rhythm, potentially disrupting melatonin production and comfort by mapping light settings without regard to their location and orientation relative to the user.
Innovation Solution
A method and controller that receive input for light scenes, obtain location and circadian rhythm values for lighting units, and map light settings based on their impact on the user's circadian rhythm, taking into account the user's location, orientation, and field of view to optimize light exposure for comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If light settings are mapped onto lighting units without considering location and circadian rhythm impact, then the lighting control system is simple and easy to operate, but the user's circadian rhythm is disrupted and melatonin production is suppressed
Solution Approach 1:
The system assigns different circadian rhythm values to different light settings and maps them to lighting units based on their specific locations relative to the user. Lighting units in different spatial positions receive different light settings optimized for their location, creating locally optimized lighting conditions that protect the user's circadian rhythm while maintaining system simplicity
Solution Approach 2:
The system changes the mapping parameters dynamically based on circadian rhythm values associated with different light settings. By considering the circadian rhythm impact of each light setting and the user's location, the system automatically adjusts which light settings are applied to which lighting units, preventing harmful blue light exposure during evening hours
2Device complexity
If light settings are mapped randomly or automatically without location consideration, then the device complexity is low, but the user comfort is reduced due to inappropriate light exposure
Solution Approach 1:
The system pre-associates circadian rhythm values with different light settings before the actual lighting control operation. This preliminary preparation allows the mapping algorithm to simply retrieve and apply the appropriate circadian rhythm value for each light setting based on user location, avoiding complex real-time calculations while ensuring user comfort
Data Source
AI summary
A method (400) of controlling a plurality of lighting units (112, 114) in a space is disclosed. The method (400) comprises: receiving (402) an input indicative of an activation of a plurality of light settings for the plurality of lighting units (112, 114), obtaining (404) location information indicative of locations of the plurality of lighting units (112, 114) relative to a location and/or an orientation of a user in the space (130), obtaining (406) a circadian rhythm value for each light setting, wherein the circadian rhythm value is indicative of an impact of a respective light spectrum of a respective light setting on the circadian rhythm of a person, mapping (408) the plurality of light settings onto the plurality of lighting units (112, 114), wherein each light setting is mapped onto a lighting unit based on the light setting's respective circadian rhythm value and based on the lighting unit's respective location relative to the location and/or orientation of the user, and controlling (410) the plurality of lighting units (112, 114) according to the mapped light settings.