Occupancy sensing with perturbation-modulated light and distributed non-imaging color sensors | Available Intellectual Property | Rensselaer Polytechnic Institute

Occupancy sensing with perturbation-modulated light and distributed non-imaging color sensors

RPI ID: 2014-061-402

Innovation Summary:
This smart lighting system detects and adapts to occupancy patterns in real-time using distributed non-imaging color sensors and perturbation-modulated light. It builds a light transport model that estimates how light moves through a space, subtracts ambient lighting, and infers occupancy distribution. This allows for targeted lighting adjustments that enhance energy efficiency and occupant comfort. Unlike camera-based systems, it protects privacy while maintaining spatial awareness of individuals in a room.

Challenges / Opportunities:
Conventional occupancy sensors only detect presence and often miss the spatial dimension. Camera-based systems are intrusive and require high computational resources. This solution offers a privacy-preserving and scalable alternative that integrates easily into lighting infrastructure. It enables smart buildings to reduce energy waste and tailor light settings based on real-time usage.

Key Benefits / Advantages:
✔ Real-time spatial occupancy sensing
✔ Privacy-friendly, non-imaging sensors
✔ Optimized energy use and comfort

Applications:
• Smart offices and buildings
• Energy-efficient lighting control
• Ambient-assisted environments

Keywords:
#smartlighting #occupancysensing #energyefficiency #privacypreserving

Intellectual Property:
US Issued Patent 9,907,138 B2
Patent Information: