Peer-to-Peer Lighting Control Architecture
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Solution Overview
Problem
Existing lighting control systems become increasingly complex with the addition of multiple sensors and dimmer circuits across multiple rooms or zones, leading to inefficiencies in controlling electrical loads and potential single points of failure in centralized architectures.
Innovation Solution
A hierarchical, peer-to-peer (P2P) architecture for lighting control systems that allows direct communication between devices without a master controller, using a network of controllers and sensors to monitor occupancy and daylight levels, and employ a typecasting addressing scheme for efficient message routing and device management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a centralized architecture with multiple sensors and dimmer circuits is used to control electrical loads across multiple rooms or zones, then the control capability is improved, but the system complexity increases and single points of failure are created
Solution Approach 1:
The system divides the lighting control network into multiple peer-to-peer connected controllers, each managing local zones independently. This segmentation eliminates the centralized bottleneck while maintaining comprehensive control capability across multiple rooms and zones through distributed intelligence.
Solution Approach 2:
The patent transitions from a vertical hierarchical architecture (centralized master-controller model) to a horizontal peer-to-peer architecture. This dimensional shift distributes control functions across multiple nodes at the same level, reducing complexity while preserving adaptability through direct device communication.
2Adaptability or versatility
If a centralized architecture with multiple sensors and dimmer circuits is used to control electrical loads across multiple rooms or zones, then the control capability is improved, but the reliability decreases due to single points of failure
Solution Approach 1:
By segmenting the control system into independent peer-to-peer connected nodes, the patent eliminates single points of failure. Each controller operates autonomously, so failures in one zone do not propagate to other zones, significantly improving overall system reliability while maintaining control capability.
Solution Approach 2:
Each controller in the peer-to-peer network performs self-service by independently managing its controlled loads without relying on a central controller. This autonomy ensures that individual nodes continue functioning even when other parts of the system fail, enhancing fault tolerance.
3Reliability
If direct communication between devices is implemented without a master controller, then the fault tolerance is improved, but the communication complexity increases
Solution Approach 1:
The patent implements a universal peer-to-peer communication protocol that enables each device to function both as a controller and a controlled device. This multi-functionality simplifies communication complexity by using a single standardized interface for all device interactions, regardless of the specific communication role.
Solution Approach 2:
The communication architecture copies the same simple peer-to-peer interaction model across all device pairs in the network. Instead of implementing complex hierarchical communication rules, each device uses identical straightforward communication patterns with its neighbors, reducing overall communication complexity while maintaining fault tolerance.
Data Source
AI summary
Systems and methods for controlling electrical loads in one or more areas. The system includes a room controller having a microprocessor for accessing data and providing commands, memory for storing information operably connected to the microprocessor, a relay for powering a load based on commands from the microprocessor, and a port for connecting a peripheral device. The system also includes a peripheral device connected to the port and configured to send data including a device type and a device instance byte to the controller indicating the type of peripheral device. The device instance byte includes a port number identifying the port and a slot number identifying a time slot within a time domain multiplexing cycle. The system also includes a load connected to the relay.