IoT DALI Gateway Architecture for Large-Scale Lighting Control
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Solution Overview
Problem
Existing lighting control systems using the DALI protocol are limited by a small network capacity, allowing only 64 nodes per system, making it unsuitable for large and complex systems, and debugging is cumbersome due to independent addresses for each unit.
Innovation Solution
An intelligent lighting control system based on the Internet of Things, featuring a gateway connected to multiple DALI systems, a cloud server, and intelligent terminals that allow for data interaction and management, enabling up to 256 execution nodes per gateway and cross-bus control without relying on the cloud server for communication, with a built-in WIFI and Ethernet module for MAC address synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If DALI protocol is used for lighting control, then the system provides standardized digital control capability, but the network capacity is limited to maximum 64 nodes per single network
Solution Approach 1:
The system divides the lighting control network into multiple DALI buses, each managed by a separate gateway. Each gateway independently manages up to 64 nodes, and multiple gateways can be combined to control larger numbers of nodes (e.g., 2 gateways × 64 nodes = 128 nodes). This segmentation allows the system to overcome the 64-node limitation of a single DALI bus while maintaining standardized control protocols.
Solution Approach 2:
The system transitions from a single-dimensional DALI bus architecture to a multi-dimensional network structure by introducing gateways as intermediate management layers. Each gateway serves as a dimensionality bridge, managing its own DALI bus (64 nodes) while being part of a larger network controlled through the cloud server, enabling scalable expansion beyond 64 nodes.
2Ease of operation
If each unit in DALI system has independent address, then the system provides precise individual control, but the debugging work becomes cumbersome
Solution Approach 1:
The system creates a virtual copy of the physical lighting layout in the cloud server's database. Each physical lamp's spatial position and connection relationships are replicated as digital information in the cloud, allowing operators to visualize and debug the system through this virtual model without needing to physically trace each DALI address, significantly simplifying debugging while preserving precise control capability.
3Speed
If multiple DALI systems are connected through cloud server, then the system provides centralized management capability, but the communication relies on cloud server which may increase latency
Solution Approach 1:
The system implements local quality by enabling direct peer-to-peer communication between gateways and control nodes within the same DALI bus, bypassing the cloud server for local control operations. The cloud server is used only for initial configuration, data logging, and cross-bus coordination, while time-critical control commands are executed locally, ensuring fast response times without excessive cloud dependency.
Data Source
AI summary
The invention discloses an intelligent lighting control system based on Internet of Things, comprising a gateway, a cloud server a plurality of DALI systems, each DALI system includes a DALI bus 100 connected to the gateway, and each DALI bus is provided with a power node, a plurality of execution nodes, a plurality of control nodes and a plurality of sensor nodes, and the number of execution nodes on each DALI bus ranges from 1 to 64; the intelligent terminal can perform data interaction with any one of the nodes in any DALI system under the gateway. In the present invention, a single gateway can provide up to 256 execution nodes, which can be applied to construct a large and complex lighting control system.