PoE Lighting Control for Validated Occupancy Detection
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Solution Overview
Problem
Existing systems for managing environmental conditions in large physical structures, such as office buildings, face challenges in coordinating concurrent control requests from multiple users, communicating between diverse lighting and HVAC devices, accommodating new technologies, managing large amounts of usage data, and ensuring privacy and security, particularly in complex and dynamic environments.
Innovation Solution
A system comprising a network of IP luminaires, an environment manager module, a commissioning module, and a gateway module that utilize PoE and CL technologies to manage environmental conditions, including occupancy-based control, data management, and secure communication, allowing for efficient coordination of lighting and HVAC systems, integration of new devices, and secure data handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple occupancy sensors are deployed to detect occupancy in large physical structures, then occupancy detection coverage is improved, but false detections from illegitimate occupancy signals increase
Solution Approach 1:
The system uses feedback mechanisms where the centralized controller receives occupancy signals from multiple sensors, validates them against established criteria, and adjusts control decisions based on the legitimacy assessment. This feedback loop enables the system to distinguish between legitimate and illegitimate occupancy signals, resolving the contradiction between detection coverage and reliability.
Solution Approach 2:
A centralized controller acts as an intermediary between occupancy sensors and environmental control devices. This intermediary validates and coordinates signals from multiple sensors before executing control actions, preventing false detections from triggering inappropriate responses while maintaining comprehensive occupancy detection coverage.
2Ease of operation
If a centralized system coordinates environmental control requests from multiple users, then control coordination is improved, but system complexity increases
Solution Approach 1:
The control system is segmented into a centralized coordination layer and distributed execution layer. The centralized controller handles high-level coordination logic for multiple user requests, while local devices execute specific control actions. This segmentation reduces overall system complexity by separating coordination functions from execution functions.
Solution Approach 2:
Multiple control requests from different users are merged and processed by a single centralized controller that applies coordination rules. This merging approach simplifies the system architecture by consolidating coordination logic in one location rather than requiring complex peer-to-peer negotiation between multiple controllers.
3Adaptability or versatility
If diverse lighting and HVAC devices are integrated into a single network, then system versatility is improved, but communication compatibility challenges increase
Solution Approach 1:
A standardized communication interface acts as an intermediary between diverse lighting and HVAC devices and the centralized controller. This interface layer handles protocol translation and compatibility issues, allowing the system to integrate various device types without requiring complex direct communication between incompatible devices.
Solution Approach 2:
The system employs a universal communication protocol at the controller level that can interface with multiple device types through standardized adapters. This universality allows diverse lighting and HVAC devices to be integrated into a single network while maintaining communication simplicity through a common interface standard.
4Ease of operation
If real-time environmental control is implemented, then user comfort response is improved, but energy consumption increases
Solution Approach 1:
The system implements periodic occupancy detection and environmental adjustments rather than continuous operation. Environmental controls are activated in real-time when occupancy is detected and deactivated during unoccupied periods, providing responsive user comfort while reducing overall energy consumption through periodic rather than continuous operation.
Solution Approach 2:
Real-time environmental control is applied locally only to occupied zones rather than uniformly across the entire facility. The system adjusts lighting and HVAC settings specifically in areas where occupancy is detected, maintaining user comfort responsiveness in occupied spaces while minimizing energy consumption in unoccupied areas.
Data Source
AI summary
Lighting units, systems, and methods are described herein for determining whether occupancy detections are legitimate or not. Methods and systems are further described herein for powering down a network of power over ethernet (PoE) components.