Robotic Cable Tray Routing for Dense Data Center Interconnects
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Solution Overview
Problem
The installation and maintenance of fiber optic cables in data centers are labor-intensive and error-prone, with excessive cable clustering and management challenges due to the high volume and weight of cables, leading to inefficiencies and difficulties in troubleshooting.
Innovation Solution
An automated physical cable installation system using interconnected cable trays with a guided dispensing robot under computer control, which optimizes cable routing through algorithms to minimize clustering and manage slack, allowing for reduced diameter cabling and increased fiber density within the same volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual cable installation is used, then flexibility in cable routing is maintained, but labor intensity and installation time increase significantly
Solution Approach 1:
The system enables self-service installation through autonomous robotic units that navigate cable trays, dispense cables with precise routing, and automatically manage slack without human intervention. The robots independently perform measurement, cable laying, and documentation tasks
Solution Approach 2:
Manual mechanical cable installation is replaced with automated robotic systems equipped with sensors, algorithms, and controlled dispensing mechanisms. The system uses computer vision and routing algorithms to substitute human decision-making and physical manipulation
2Length of stationary object
If cable length is increased to reach distant ports, then coverage area expands, but cable management and slack control become difficult
Solution Approach 1:
The system performs preliminary measurement and planning before cable installation, calculating optimal cable lengths and routing paths in advance. Slack is pre-determined and distributed along the cable path before the cable is fully installed, preventing management issues later
Solution Approach 2:
The system continuously monitors cable installation progress and slack distribution through sensors and algorithms. Real-time feedback allows dynamic adjustment of cable dispensing rate and routing to maintain optimal slack levels throughout the installation process
3Productivity
If multiple technicians install cables simultaneously, then installation speed increases, but coordination complexity and errors increase
Solution Approach 1:
The installation system is divided into multiple independent robotic units, each capable of autonomous operation. Each robot handles specific cable installation tasks independently, eliminating coordination conflicts while maintaining high throughput through parallel execution of installation tasks
Solution Approach 2:
The system uses centralized coordination with real-time feedback from multiple robots to track installation progress, cable routing, and slack management. This coordinated feedback mechanism ensures consistent quality control and documentation across all installation activities
4Quantity of substance
If cable tray volume is increased to accommodate more cables, then cable density increases, but space requirements and infrastructure cost increase
Solution Approach 1:
The system optimizes cable routing parameters including path selection, slack distribution, and cable positioning to maximize space utilization. By changing how cables are routed and positioned rather than increasing tray size, the system achieves higher effective cable density in existing infrastructure
Data Source
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AI summary
Apparatus and methods are employed to install fiber optic cables in a data center facility using one or more cable dispensing robots that dispense fiber optic cable that is pre-spooled on a cable cartridge (20), by programmatically unspooling the cable from the cable cartridge and paying the cable out along a potentially transverse oscillatory path (e.g. sinusoidal curve) as the robot (19) moves down a cable tray network that is arranged adjacent and above large numbers of equipment bays (10). A controller (36) accesses a database (34) which stores the state of all cables within the cable tray network. The database (34) further stores information regarding the availability of cable cartridges (20-2) of standard cable lengths, which are potentially stored within a cable cassette loading/unloading system. The controller (36) receives instructions on where and how to spatially deploy a fiber optic interconnect cable within the tray network of the data center facility.