Multi-Sensor Lighting Control for Uniform Illumination
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Solution Overview
Problem
Existing lighting systems lack efficient control mechanisms to adjust light output based on ambient light changes and geometric relationships within architectural spaces, leading to uneven illumination and energy inefficiency.
Innovation Solution
A system comprising light fixtures with receivers and controllers that communicate with light sensors to adjust light output based on detected light values, geometric relationships, and utility demand responses, ensuring uniform photometric distribution and energy savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple light fixtures are controlled by a single sensor, then the control complexity is reduced, but the illumination uniformity deteriorates
Solution Approach 1:
The patent divides the control system into multiple independent sensor-fixture pairs, where each sensor controls its corresponding fixture independently. This segmentation allows each control loop to optimize local illumination conditions, achieving uniform overall illumination while maintaining simple individual control mechanisms.
2Adaptability or versatility
If light output is adjusted frequently to respond to ambient light changes, then the adaptability to environment is improved, but the energy consumption increases
Solution Approach 1:
The system implements continuous feedback loops where sensors monitor ambient light conditions and automatically adjust fixture output accordingly. This feedback mechanism enables the system to adapt to environmental changes efficiently, reducing energy consumption by only operating at full power when genuinely needed while maintaining consistent illumination levels.
3Measurement precision
If the system uses detailed geometric relationship calculations to optimize light distribution, then the illumination precision is improved, but the computational complexity increases
Solution Approach 1:
The system performs preliminary geometric calculations and spatial relationship assessments during the initial setup and commissioning phase. This preliminary action establishes optimal control parameters and relationships before operation, allowing the system to achieve precise illumination control during runtime without requiring complex real-time computations, thus reducing operational computational complexity.
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
The system provides continuous, smooth adjustment of light output, optimizing energy use by responding to ambient light changes and geometric factors, resulting in improved occupant comfort and energy efficiency.
Implementation Method 1
Each of the sensors include a light detector configured to detect light values
Data Source
AI summary
Systems and methods are disclosed to control light output at one or more light fixtures based on input from one or more light detectors. Embodiments of the invention may also be used for auto commissioning, personal control and/or day lighting. Some embodiments of the invention can be used to ensure that light output at the light fixtures provides a combined uniform photometric distribution within an architectural space. Moreover, embodiments of the invention can respond to changes to ambient light, which illuminates the architectural space from a window, door, or television, etc., in a smooth and non-oscillating way. Embodiments of the invention can be implemented in lighting systems employing multiple light fixtures having one or more light source and multiple light detectors.