Lighting Pole With Isolated Axial Chambers for EMI Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Street light poles with added WIFI transmitters and CCTV cameras face electro-magnetic interference (EMI) issues due to high voltage power lines, causing signal degradation and loss of WIFI coverage, which existing solutions like external mounting in PVC chambers are aesthetically unpleasing and prone to vandalism.
Innovation Solution
A hollow tube lighting pole design with nonintersecting walls dividing the interior into isolated chambers, including a gap to separate high and low voltage lines, minimizing EMI and providing a secure, aesthetically pleasing solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If low-voltage lines are externally mounted in PVC chambers, then EMI protection is improved, but aesthetic appearance deteriorates and vulnerability to vandalism increases
Solution Approach 1:
The low-voltage chamber is nested within the hollow tube structure of the lighting pole itself, rather than being externally mounted. This integrates the protective chamber into the pole's existing structure, maintaining aesthetic appearance while providing EMI protection through the isolated chamber design with nonintersecting walls.
Solution Approach 2:
The interior of the hollow tube is divided into separate isolated chambers using nonintersecting walls, creating distinct compartments for high-voltage and low-voltage lines. This segmentation prevents EMI while maintaining a clean, integrated external appearance without external PVC chambers.
2Object-affected harmful factors
If low-voltage lines are externally mounted in PVC chambers, then EMI protection is improved, but security against vandalism and theft deteriorates
Solution Approach 1:
The low-voltage chamber is nested within the hollow tube structure of the lighting pole, utilizing the pole's inherent strength and security. This integration protects the delicate low-voltage electronics from vandalism and theft while maintaining EMI protection, eliminating the vulnerability of external PVC chamber installations.
Solution Approach 2:
The protective chamber structure is merged with the lighting pole itself, combining the functions of structural support, security, and EMI protection into a single integrated system. This eliminates the separate external PVC chamber that was vulnerable to vandalism.
3Device complexity
If high and low voltage lines are placed in the same chamber, then device complexity is reduced, but EMI increases causing signal degradation
Solution Approach 1:
The chamber is segmented into isolated compartments using nonintersecting walls that divide the interior into separate spaces for high-voltage and low-voltage lines. This segmentation maintains a relatively simple overall structure while effectively preventing EMI through physical isolation with gaps between chambers.
4Object-affected harmful factors
If nonintersecting walls are used to create isolated chambers, then EMI protection is improved, but manufacturing complexity increases
Solution Approach 1:
The use of nonintersecting walls creates isolated chambers that can be manufactured as modular components. These segmented structures allow for simplified assembly and manufacturing processes compared to creating complex integrated shielding, as each chamber section can be produced independently and then assembled within the hollow tube.
Data Source
AI summary
A lighting pole is disclosed, which includes a hollow tube, and at least two nonintersecting walls extending over an axial length of the hollow tube to divide an interior of the hollow tube into at least three isolated chambers. At least one of the three isolated chambers defines a gap separating at least two of the isolated chambers.