Mounting Rail Waveguide for Long-Range Lighting Network Links

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Solution Overview

Problem

Establishing a reliable and cost-effective wireless communication network for indoor lighting systems is challenging due to interference, distance limitations, and the need for radio repeaters, which increase costs and introduce transmission delays, especially in large spaces with high ceilings.

Innovation Solution

A lighting system with a mounting rail assembly that incorporates a passive waveguide to guide wireless signals between node modules, reducing the need for radio repeaters and minimizing electromagnetic interference, while allowing for modular and scalable design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If radio repeaters are used to extend wireless communication distance, then communication range is improved, but system cost and complexity increase

Engineering Contradiction:
Improvecommunication rangeVSAvoidsystem complexity
Core Design Contradiction:
Length of stationary objectVSDevice complexity

Solution Approach 1:

The patent replaces the electronic radio repeater system with a passive electromagnetic waveguide structure integrated into the mounting rail. The waveguide uses electromagnetic field propagation along the conductive rail to extend communication distance without requiring active electronic components, power supply, or signal processing circuits, thereby eliminating the complexity and cost associated with traditional radio repeaters.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The mounting rail assembly serves as an intermediary structure that carries both electrical power and electromagnetic communication signals. By integrating the waveguide function into the existing mechanical mounting infrastructure, the system extends communication range without adding separate repeater devices, reducing overall system complexity while maintaining extended reach.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Length of stationary object

If radio repeaters are deployed to bridge long distances, then communication coverage is improved, but transmission delay increases

Engineering Contradiction:
Improvecommunication distanceVSAvoidtransmission delay
Core Design Contradiction:
Length of stationary objectVSLoss of time

Solution Approach 1:

The patent eliminates the sequential receive-retransmit process of radio repeaters by using a passive waveguide that allows electromagnetic signals to propagate continuously along the mounting rail. This substitution of active electronic relaying with passive electromagnetic guidance reduces transmission delay while extending communication distance.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If multiple wireless systems operate in close proximity, then system versatility is improved, but electromagnetic interference increases

Engineering Contradiction:
Improvesystem versatilityVSAvoidelectromagnetic interference
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the communication function from the traditional wireless air interface and relocates it to a dedicated electromagnetic waveguide channel within the mounting rail. This separation creates an isolated communication pathway that is shielded from external electromagnetic interference while allowing other wireless systems to operate freely in the environment.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The mounting rail waveguide acts as an intermediary transmission medium that isolates communication signals from the external electromagnetic environment. By channeling signals through this protected pathway, the system maintains versatility for multiple wireless operations while minimizing interference through physical and electromagnetic isolation.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If a mesh network topology is implemented for reliability, then system stability is improved, but hardware cost and installation complexity increase

Engineering Contradiction:
Improvenetwork stabilityVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent makes the mounting rail assembly multi-functional by integrating power distribution, mechanical mounting, and electromagnetic communication guidance into a single structure. This universality eliminates the need for separate repeater hardware and complex mesh network infrastructure, reducing installation complexity while maintaining system reliability through the integrated waveguide channel.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 solution provides a robust, efficient, and cost-effective wireless connection over long distances with reduced power consumption and interference, enabling reliable communication in large spaces without the need for multiple repeaters, thus enhancing the reliability and scalability of the lighting system.

Implementation Method 1

The mounting rail assembly comprises a waveguide configured to guide wireless signals between the first wireless node module and the at least one second wireless node module

Methodology Applied
Scientific EffectWaveguide: Waveguide

Data Source

PatentEP4270644A1Lighting system including mounting rail with an integrated waveguide
Publication Date: 2023.11.01 ZUMTOBEL LIGHTING GMBH
  • EP4270644A1 patent drawingFigure 1
  • EP4270644A1 patent drawingFigure 2
  • EP4270644A1 patent drawingFigure 3

AI summary

The invention concerns a lighting system comprising a mounting rail assembly comprising conductors for mains supply integrated into the mounting rail assembly, and mechanical mounting fixtures for lighting modules, lighting control modules and/or other system modules, and a first wireless node module attached to the mounting rail assembly. The mounting rail assembly comprises at least one second wireless node module attached to the mounting rail assembly. The mounting rail assembly comprises a waveguide configured to guide wireless signals between the first wireless node module and the at least one second wireless node module.