Multi-Segment Luminaire with External Illuminance Measurement
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Solution Overview
Problem
Existing lighting systems are inadequate for providing sufficient illumination, as they cannot adjust for local variations in illuminance and require complex installation with detailed information about the room and light positions, leading to inefficient and inflexible lighting solutions.
Innovation Solution
A luminaire design featuring a first lighting segment for basic illumination, a second lighting segment for intensified illumination of specific areas, and a control unit that adjusts light intensity based on measured illuminance, allowing for flexible adaptation to room conditions without requiring specific room information, with the measuring device positioned outside the second spatial area to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lighting system provides homogeneous illumination of the entire building section, then the installation is simplified, but local variations in illuminance cannot be addressed
Solution Approach 1:
The lighting system is divided into multiple independently controllable luminous segments within a single luminaire. Each luminous segment can be controlled separately to illuminate different spatial areas with different illuminance levels, enabling both homogeneous basic lighting and localized intensified illumination without requiring multiple separate luminaires
Solution Approach 2:
Different luminous segments are assigned to illuminate different spatial areas with different illuminance characteristics. The first luminous segment provides basic homogeneous illumination, while the second luminous segment provides intensified illumination for specific areas, allowing each zone to have the quality of illumination it needs
2Adaptability or versatility
If the measuring device measures illuminance in the second spatial area, then localized control is improved, but the basic lighting adjustment becomes inaccurate
Solution Approach 1:
The measuring device is positioned to measure illuminance in the first spatial area (basic lighting area) rather than in the second spatial area (intensified lighting area). This extracts the measurement function from the intensified area, ensuring that the measurement reflects only the basic lighting contribution from the first luminous segment without interference from the second luminous segment
Solution Approach 2:
The first spatial area serves as an intermediary measurement zone that is illuminated only by the first luminous segment. By measuring illuminance in this intermediate area, the system can accurately determine the basic lighting level without the confounding factor of the second luminous segment's intensified illumination
3Measurement precision
If detailed information about room and luminaire positions is stored in the lighting plan, then lighting control accuracy is improved, but the installation complexity increases
Solution Approach 1:
The luminaire design integrates multiple luminous segments and a measuring device into a single self-contained unit that can adapt to different spatial configurations. The system determines spatial relationships through the geometric arrangement of components within the luminaire itself rather than requiring external room information, making the luminaire universally applicable without complex installation procedures
Solution Approach 2:
The luminaire determines its own spatial configuration and control parameters through the fixed geometric relationships between its internal components (luminous segments and measuring device). The system uses the known positions of its own components to automatically establish control zones and measurement areas, eliminating the need for manual input of room dimensions or luminaire positions
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
Enables simple installation and adaptable lighting that maintains basic illumination while intensively illuminating specific areas, ensuring effective and flexible lighting that adjusts to changing conditions without compromising the basic lighting setup.
Implementation Method 1
a measuring device for measuring the illuminance in a measuring area located in the first spatial area
Implementation Method 2
a control unit for adjusting the luminous intensity of the first luminous segment as a function of the measured illuminance
Implementation Method 3
The first and/or second light segments may comprise one or more light sources, such as LEDs
Data Source
Figure 1
Figure 2
AI summary
A luminaire (1) for illuminating at least two room areas (2, 3) is described, comprising a first luminaire segment (4) directed towards a first room area (2) and a measuring device (6) for measuring the illuminance in a measuring area (7) located in the first room area (2).In order to design a luminaire of the type described above in such a way that a room can be illuminated with a minimum illuminance despite changing environmental influences and with the aim of selectively illuminating certain predefined areas of the room more intensely and of easily adapting the illumination to changing room conditions, it is proposed that a second luminaire segment (5) is directed towards the second room area (3), which forms a sub-area of the first room area (2), wherein the measuring area (7) lies outside the second room area (3) and a control unit (8) is provided for adjusting the luminous intensity of the first luminaire segment (4) depending on the measured illuminance.