Occupancy-Adaptive Illumination Control for Targeted Light Distribution
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Solution Overview
Problem
Existing illumination devices in rooms require manual operation to adjust lighting based on the number of occupants, leading to inefficiencies and energy waste, especially when people move during meetings.
Innovation Solution
An illumination device with a light source, position data acquirer, position data processor, light quantity setter, irradiation shape setter, and irradiation angle setter that automatically adjusts light distribution based on detected positions of occupants, optimizing light output to minimize wasted energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all illumination devices are turned on to ensure adequate lighting coverage, then illumination reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements dynamic control of illumination devices based on real-time detection of occupant positions. The system continuously monitors the room and adjusts which illumination devices are active according to the current distribution of people, transitioning from static all-or-nothing lighting to dynamic adaptive lighting that matches actual occupancy patterns.
Solution Approach 2:
The patent applies local quality by providing illumination only to areas where occupants are actually present. Instead of uniformly illuminating the entire room, the system identifies specific zones with occupants and activates only the illumination devices covering those zones, creating non-uniform localized lighting that matches occupancy distribution.
2Use of energy by moving object
If illumination devices are manually operated to save energy by turning them off in unoccupied areas, then energy consumption is reduced, but operational complexity increases
Solution Approach 1:
The patent implements self-service by enabling illumination devices to automatically adjust their operation based on detected occupancy without human intervention. The system uses sensors to detect occupant positions and automatically controls which illumination devices should be on or off, eliminating the need for manual operation while achieving energy savings.
Solution Approach 2:
The patent employs feedback mechanisms where the system continuously monitors occupancy information and uses this feedback to automatically adjust illumination device operation. The closed-loop control system processes detection results in real-time and adjusts lighting accordingly, removing the need for manual decision-making and operation.
3Reliability
If multiple illumination devices are activated to cover boundary areas between illumination zones, then illumination reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies dynamic control to boundary areas by continuously monitoring occupant positions near zone boundaries and adjusting which illumination devices are active accordingly. Instead of statically activating multiple devices to cover potential boundary cases, the system dynamically determines the optimal configuration based on real-time occupancy data, activating only the necessary devices.
Data Source
AI summary
An illumination device includes a light source, a position data acquirer configured to acquire position data indicating positions of a plurality of detection targets, a position data processor configured to calculate ellipse data corresponding to the positions of the detection targets based on the position data, a light quantity setter configured to set light quantity of the light source based on the ellipse data calculated by the position data processor, an irradiation shape setter configured to set an irradiation shape of light from the light source based on the ellipse data calculated by the position data processor, and an irradiation angle setter configured to set an irradiation angle of light from the light source based on the ellipse data calculated by the position data processor.