Modular LED Street Lighting with Segmented Power Control
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Solution Overview
Problem
Conventional LED lighting systems for street lighting face challenges with decreasing light output over time due to LED aging, requiring spare LEDs and complex control systems, which increase costs and system complexity.
Innovation Solution
A modular lighting system with interchangeable modules and a controller that adjusts power based on accumulated operation time and connected modules, allowing for easy expansion and maintenance, using standardized connectors for mechanical and electrical connections, and a controller that adapts power to compensate for LED degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If spare LEDs and control systems are added to compensate for LED aging, then illumination level is maintained, but system complexity and cost increase
Solution Approach 1:
The lighting system is divided into modular units, each with its own LED array and control capability. This segmentation allows individual modules to be replaced or upgraded without affecting the entire system, reducing overall complexity while maintaining illumination levels through selective module replacement rather than system-wide spare LED management
Solution Approach 2:
The system utilizes adjustable parameters such as dimming levels and operational schedules to optimize LED performance and extend lifespan. By changing operational parameters rather than adding hardware, the system maintains illumination requirements without increasing complexity
2Illumination intensity
If spare LEDs and control systems are added to compensate for LED aging, then illumination level is maintained, but cost increases
Solution Approach 1:
Modular architecture enables cost-effective maintenance by allowing replacement of only the specific module containing degraded LEDs rather than investing in expensive spare LED inventory and associated control systems for the entire installation
Solution Approach 2:
The modular design treats individual LED modules as replaceable units with extended operational life through proactive replacement before complete failure. This approach is more cost-effective than maintaining expensive spare LED inventory and control systems, as modules can be economically replaced on-demand based on actual degradation needs
3Illumination intensity
If the number of LEDs is increased to achieve desired light flux, then total light output is achieved, but system complexity and weight increase
Solution Approach 1:
The system achieves high total light flux through multiple modular units rather than a single complex array. Each module contains a manageable number of LEDs that can be independently controlled and maintained, reducing overall system complexity while scaling to achieve required illumination levels
Solution Approach 2:
Instead of increasing LED density in a single direction, the system scales illumination output by adding modular units in multiple dimensions (spatial distribution). This approach achieves high total flux while maintaining manageable complexity within each module through distributed architecture
4Illumination intensity
If the number of LEDs is increased to achieve desired light flux, then total light output is achieved, but weight increases
Solution Approach 1:
The lighting system distributes total light flux across multiple lightweight modular units rather than concentrating all LEDs in a single heavy assembly. This segmentation reduces the weight of individual components while achieving the same total illumination output through distributed deployment
Solution Approach 2:
The system achieves high total light flux by distributing LED modules across multiple spatial locations rather than concentrating them in one heavy unit. This dimensional distribution approach reduces the weight of any single stationary component while maintaining overall system output through aggregated illumination from multiple lighter modules
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides a cost-effective, scalable, and flexible lighting solution that maintains desired illumination levels by allowing for easy addition of modules and power adjustments, reducing the need for spare LEDs and complexity, thus lowering ownership costs and maintaining performance over time.
Implementation Method 1
A lighting system comprising modules which are respectively provided with light source, such as solid state-based light source, e.g. light emitting diodes (so-called LED)
Data Source
AI summary
The invention proposes a lighting system comprising a plurality of modules, the modifies respectively comprising: a housing provided with an exit window; at least one light source provided in the housing; wherein the lighting system further comprises: a controller arranged to drive light sources, an electrical circuit arranged to connect light sources with the controller, the electrical circuit further comprising a first pair of electrical contacts provided in a first module and a second pair of electrical contacts provided in a second module, the first and second pair of contacts being arranged for a mutual electrical connection.