Distributed Lighting Fixture Control via Sensor Data Sharing
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Solution Overview
Problem
Traditional lighting control systems rely on central controllers to manage lighting fixtures, limiting decentralized control and coordination among fixtures, which restricts adaptability and efficiency in responding to local and remote sensor data.
Innovation Solution
A distributed lighting network where each fixture includes sensors and circuitry to process local and remote sensor data, allowing independent operation while coordinating with other fixtures through shared data and internal logic to adjust light output based on occupancy, ambient light, and user inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a central controller is used to control lighting fixtures, then control decisions can be made based on inputs from all fixtures, but decentralized control and coordination among fixtures is limited
Solution Approach 1:
The control system is segmented by distributing control intelligence from a single central controller to multiple individual lighting fixtures. Each fixture contains its own control circuitry that can independently process sensor data and make control decisions, while still functioning as part of a coordinated network. This segmentation enables decentralized control without requiring a completely new system architecture.
Solution Approach 2:
The system implements feedback mechanisms where lighting fixtures share sensor data and control status with other fixtures in the network. Each fixture receives feedback about occupancy, ambient light conditions, and operational state from neighboring fixtures, allowing it to adjust its behavior accordingly. This feedback loop enables coordination among distributed fixtures while maintaining individual autonomy.
2Adaptability or versatility
If lighting fixtures operate independently with internal logic, then adaptability to local conditions improves, but coordination and concerted operation may be compromised
Solution Approach 1:
The system merges independent local decision-making capabilities with network-wide coordination by having fixtures share sensor data and control objectives. Each fixture maintains its own internal logic for processing local sensor inputs, but simultaneously incorporates information from other fixtures through data sharing. This combination allows fixtures to respond adaptively to local conditions while ensuring coordinated operation through shared awareness of the overall environment and control goals.
3Loss of energy
If sensor data is shared among lighting fixtures, then energy efficiency and light distribution optimization improve, but data processing requirements and system complexity increase
Solution Approach 1:
Each lighting fixture independently processes the sensor data it receives from the network using its own internal logic and control circuitry. Rather than requiring a centralized processing unit or complex external processing system, each fixture serves itself by autonomously interpreting sensor data about occupancy, ambient light levels, and operational status to make local control decisions. This self-service approach reduces overall system complexity while enabling energy-efficient operation.
Data Source
AI summary
A lighting network where control of the lighting fixtures in the network may be distributed among the lighting fixtures. The lighting fixtures may be broken into groups that are associated with different lighting zones. Certain lighting fixtures will have or be associated with one or more sensors, such as occupancy sensors, ambient light sensors, and the like. Within the lighting network or the various lighting zones, lighting fixtures may share sensor data. Each lighting fixture may process sensor data provided by its own sensor, a remote standalone sensor, or lighting fixture, and process the sensor data according to the lighting fixture's own internal logic to control operation. The lighting fixtures may also receive control input from other lighting fixtures, control nodes, light switches, and commissioning tools. The control input may be processed along with the sensor data according to the internal logic to further enhance control of the lighting fixture.