Intelligent Illumination Using Modulated Light for Occupancy Detection
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Solution Overview
Problem
Conventional lighting control systems lack the ability to dynamically adjust illumination based on the location and presence of individuals in a room, leading to inefficient energy use and inconsistent lighting conditions.
Innovation Solution
The implementation of intelligent illumination systems that utilize modulated light sources, time-of-flight sensors, and host devices to detect three-dimensional image data, allowing for real-time adjustment of light intensity and color temperature based on the presence and location of objects, such as people, within the visible or infrared spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional lighting control systems are used, then the system structure is simple, but the ability to dynamically adjust illumination based on location and presence is lost, leading to energy inefficiency
Solution Approach 1:
The lighting system integrates multiple functions into a single platform: illumination provision, motion detection, three-dimensional image capture, and automated control. The lighting fixture becomes a multi-functional device that not only provides light but also serves as a sensing station for occupancy detection and spatial mapping, eliminating the need for separate motion sensors and control systems
Solution Approach 2:
The system implements closed-loop feedback by continuously monitoring the environment through time-of-flight sensors and three-dimensional image cameras, detecting occupancy and spatial information, and automatically adjusting illumination levels and color temperature in response to detected conditions, creating an adaptive lighting environment that optimizes energy usage
2Loss of energy
If lighting is adjusted dynamically based on occupancy, then energy efficiency improves, but the system complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The patent combines the illumination function with detection functions by integrating time-of-flight sensors and three-dimensional image cameras directly into the lighting fixture. This merging of functions allows the system to use the existing lighting infrastructure as part of the sensing system, reducing the need for entirely separate control systems while enabling sophisticated occupancy-based lighting adjustments
Solution Approach 2:
The lighting system performs self-adjustment based on automated occupancy detection and spatial analysis. The system independently monitors its environment through integrated sensors, processes three-dimensional image data to detect presence and location of occupants, and automatically modifies illumination parameters without requiring external control inputs, making the system self-regulating and energy-efficient
3Adaptability or versatility
If motion sensors are mounted in lighting fixtures, then occupancy detection is enabled, but the system lacks three-dimensional spatial awareness and personalized lighting control
Solution Approach 1:
The system transitions from conventional two-dimensional motion sensing to three-dimensional spatial awareness by incorporating time-of-flight sensors and three-dimensional image cameras. This dimensional enhancement allows the system to capture depth information, map spatial relationships, and track occupancy positions in three-dimensional space, enabling sophisticated personalized lighting control based on precise spatial location rather than simple presence detection
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 dynamic and personalized lighting control, optimizing energy efficiency by adjusting light characteristics according to the specific needs of different areas and individuals within a space, enhancing user comfort and reducing energy consumption.
Implementation Method 1
producing, by a light source, modulated illumination in a visible part of the spectrum
Implementation Method 2
detecting three-dimensional image data based on at least a portion of the modulated light produced by the light source and reflected by a scene
Data Source
AI summary
The present disclosure describes intelligent illumination systems that use modulated light. For example, in one aspect, a method includes producing, by a light source, modulated illumination in a visible part of the spectrum, detecting three-dimensional image data based on at least a portion of the modulated light produced by the light source and reflected by a scene, and changing a characteristic of the modulated illumination based on the detected three-dimensional image data.