Modular Access Node for Long-Range Public Transit Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Public transportation facilities face challenges in providing effective communication and security solutions, as existing call stations are limited by Ethernet's 100-meter distance restriction, requiring a more extensive communication infrastructure that is secure, easily maintainable, and adaptable to various environments.
Innovation Solution
A modular communication Access Node that provides a secure, NEMA 4-sealed enclosure for communication equipment, including wired and wireless networks, power supplies, and cooling systems, allowing for easy installation and upgrading, and can be mounted in various locations, overcoming distance limitations and enhancing security and information dissemination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If call stations are connected using Ethernet infrastructure, then communication reliability is improved, but the 100-meter distance restriction increases device complexity and installation difficulty
Solution Approach 1:
The Access Node serves as an intermediary device that receives communications from call stations via Ethernet within 100 meters and extends the communication range to unlimited distances using wireless technology, effectively mediating between the limited Ethernet infrastructure and the need for broader coverage
Solution Approach 2:
The system is segmented into two functional parts: a wired Ethernet segment (Access Node to communication center) and a wireless segment (Access Node to call stations), allowing each segment to operate within its optimal range and technology parameters
2Reliability
If communication equipment is placed in secure enclosures, then security against unauthorized access is improved, but accessibility for servicing and upgrading deteriorates
Solution Approach 1:
The Access Node employs a modular design with separable components including removable doors, detachable power supplies, and replaceable communication modules, allowing secure enclosure while enabling easy access to individual components for maintenance and upgrades
Solution Approach 2:
The enclosure design incorporates dynamic access mechanisms such as removable panels and doors that can be opened for servicing and closed for security, transitioning between accessible and secure states as needed
3Productivity
If a single Access Node consolidates multiple communication functions, then installation time and cost are reduced, but the housing size and complexity increase
Solution Approach 1:
The Access Node is designed as a universal platform that can perform multiple communication functions (wireless access, Ethernet routing, power distribution, cooling) within a single housing, reducing the number of separate devices needed while consolidating functions in one location
Data Source
AI summary
An all-encompassing fully integrated communication Access Node for call stations and other security and communications equipment includes a modular housing within which is mounted wire and wireless communication systems and power systems. The housing has a chassis for mounting the electronics and battery modules and a backbox and panel for staged installations, managing cables and providing heat dissipation. A door to the chassis is secured using latch hooks with roller bearings. Optical cable termination is provided as a two sided patch panel. Dual power supplies provide power to internal components and to external components via a distribution module. Backup power is provided by a custom battery backup with a charging controller. Cooling is controlled by dual fans and a fan controller moving air through the housing using openings and baffles. Freestanding pedestal mounting of the Access Node and various other mounts for column, wall, or ceiling to any substrate or condition is an option. Venting through a plug prevents pressure build up.