Ceiling Illumination System with Person-Tracking Light Segmentation
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Solution Overview
Problem
Conventional illumination systems create an unbalanced visual field, leaving ceiling and wall surfaces dark, which reduces the perceived brightness and comfort of an illumination space, despite reducing power consumption by only activating necessary lights.
Innovation Solution
An illumination system with multiple light sources on ceiling and floor surfaces, where the control unit adjusts the lighting state of each apparatus based on a person's position, ensuring the ceiling and floor are illuminated, thereby increasing the area of brightness in the visual field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If only the minimum necessary illumination apparatus is turned on to reduce power consumption, then power consumption is reduced, but the area of bright region in the visual field becomes small and the person feels the entire illumination space is dark
Solution Approach 1:
The illumination apparatus is divided into two independent light sources: a first light source for irradiating the floor surface and a second light source for irradiating the ceiling surface. This segmentation allows selective activation of different light sources based on control signals, enabling the system to illuminate both floor and ceiling areas simultaneously while managing power consumption through targeted activation of only necessary illumination zones.
Solution Approach 2:
Different regions of the illumination space are provided with different illumination qualities by activating specific light sources in specific apparatuses. The control unit determines which apparatuses should illuminate the floor versus the ceiling based on the detected person position, creating locally optimized illumination that increases the overall area of bright regions in the visual field while maintaining energy efficiency.
2Illumination intensity
If multiple illumination apparatuses are turned on to increase the area of bright region, then the area of bright region increases and comfort improves, but power consumption increases
Solution Approach 1:
The illumination system dynamically adjusts which apparatuses activate their first or second light sources based on real-time detection of person position. The control unit continuously monitors the illumination space and modifies the illumination pattern accordingly, ensuring that only the minimum necessary apparatuses are activated at any given moment to provide adequate brightness coverage while minimizing power consumption.
Solution Approach 2:
The system employs periodic detection and control cycles where the person position is continuously monitored and the illumination pattern is adjusted in response. This dynamic, periodic adjustment ensures that illumination is provided only when and where needed, balancing the need for sufficient bright region area with energy conservation through on-demand activation of illumination apparatuses.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the perceived brightness and comfort of the space while maintaining energy efficiency by ensuring multiple bright regions are visible, reducing the feeling of darkness and improving user experience.
Implementation Method 1
a first light source that irradiates the second surface with light
Implementation Method 2
a second light source that irradiates the first surface with light
Data Source
AI summary
An illumination system includes lighting apparatuses (20), a camera (11), an image processing unit (12) (person position detection unit), and a lighting control unit (14) and a storage unit (13) (control unit). The illumination apparatuses (20) are placed on a ceiling surface (C), and each include a first light source (24) and a second light source (25) that irradiate a floor surface (F) and the ceiling surface (C) with light, respectively. The control unit controls an illumination apparatus (20b2) corresponding to a person (P)'s position detected by the person position detection unit among the illumination apparatuses (20) so as to turn on the first light source (24). The control unit controls at least one of one or more illumination apparatuses (20) that are each adjacent to the illumination apparatus (20b2) so as not to turn on the first light source (24) and turn off the second light source (25).