Intelligent Lighting System for Office Circadian Rhythm Health
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Solution Overview
Problem
Current office lighting standards in China primarily focus on visual needs, failing to stimulate biological effects and promote circadian rhythm health, leading to issues like sleep disorders, emotional problems, and reduced work efficiency due to inadequate light stimulation, especially in far-window work stations with insufficient natural light and uniform artificial lighting.
Innovation Solution
An intelligent and healthy lighting method and device that adjusts lighting modes based on ambient light data, lighting time control data, and human posture data to provide personalized lighting scenes, including awake, rest, work, night, and silence modes, using a system that includes infrared sensing, ambient light data acquisition, and a computer analysis system to optimize lighting conditions according to human rhythms and office time characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If uniform artificial lighting is used in office spaces, then visual needs are met with sufficient illuminance, but circadian rhythm health is not stimulated and biological effects are insufficient
Solution Approach 1:
The lighting system dynamically adjusts color temperature and illuminance levels based on the time of day and detected human presence. The controller modifies lighting parameters in real-time to match circadian rhythm requirements, transitioning from cool white light during work hours to warm white light during evening hours, thereby providing both sufficient visual illumination and appropriate biological stimulation.
Solution Approach 2:
The system changes key lighting parameters including color temperature (from 6504K to 2700K), illuminance levels (from 500lx to 300lx), and lighting timing to match circadian rhythm patterns. These parameter modifications enable the lighting to serve dual functions: meeting visual requirements and stimulating biological effects appropriately throughout the day.
2Illumination intensity
If natural lighting is used in near-window work stations, then sufficient light stimulation is provided, but excessive sunlight causes over-stimulation in those areas
Solution Approach 1:
The system implements zone-based lighting control where different lighting strategies are applied to different spatial locations. Near-window zones receive controlled natural light during daytime, while far-window zones receive enhanced artificial lighting. The controller adjusts illumination levels locally based on position and time to ensure all areas receive appropriate light stimulation without excessive exposure.
3Ease of operation
If conventional lighting standards are applied, then visual work requirements are satisfied, but work efficiency and employee health are reduced due to lack of circadian rhythm stimulation
Solution Approach 1:
The lighting system implements periodic variations in illuminance and color temperature that align with natural circadian rhythms. During morning and afternoon work periods, the system provides higher illuminance (500lx) with cooler color temperature (6504K) to enhance alertness and productivity. During midday breaks and evening periods, illuminance is reduced (300lx) with warmer color temperature (2700K) to promote relaxation and prepare for sleep, thereby optimizing work efficiency throughout the day.
4Stability of the object's composition
If far-window work stations receive reduced natural light, then uniform lighting distribution is maintained, but adequate light stimulation for human rhythm health is not achieved
Solution Approach 1:
The system dynamically compensates for natural light deficiencies in far-window zones by providing enhanced artificial illumination during daytime hours. The controller detects zones with insufficient natural light and automatically increases artificial lighting output to achieve target illuminance levels (500lx during work hours), ensuring all employees receive adequate circadian rhythm stimulation regardless of their position in the office.
Data Source
AI summary
The present disclosure relates to an intelligent and healthy lighting method and device for an office space micro environment. According to the present disclosure, high-illuminance light can be provided, according to periodic variations of human rhythms and characteristics of office time (i.e., lighting time control data), in the morning to increase rhythmic stimulation to improve alertness of office staff and working efficiency. In addition, the present disclosure effectively solves the problem that conventional lamps cannot meet the requirements of human rhythm health by setting a lighting method having multiple modes (i.e., an awake mode, a rest mode, a relax mode, a work mode, a night mode, and a silence mode) and multiple scenes (i.e., determining a lighting mode according to ambient light data, lighting time control data, and human posture data).