Milled Roadway Cable Pathways for Fast Protected Fiber Routing
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Solution Overview
Problem
Traditional aerial and below-grade fiber optic cable deployment methods are time-consuming and costly, particularly due to the need for directional drilling and sharing of telephone poles, and existing surface-mounted cable systems are susceptible to damage from construction equipment and environmental factors.
Innovation Solution
A method involving the creation of a channel in asphalt or concrete surfaces using a custom blade design to accommodate fiber optic cables and adhesive cabling tape, allowing for secure and protected routing of cables along roadways and pavements, which can be done in a single pass using a specialized blade configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If surface-mounted cable systems are used, then installation speed is improved, but cable protection from damage is worsened
Solution Approach 1:
The cable is nested within a recessed channel milled into the pavement surface, and the tape is nested within the same recessed area. This nested structure allows the cable system to be protected by the pavement itself while maintaining a compact profile that does not protrude above the surface, thus preventing damage from snow plows and construction equipment.
Solution Approach 2:
The solution transitions from a surface-level mounting approach to a subsurface embedding approach by milling a recessed channel and recessed area into the pavement. This dimensional change moves the cable from the surface plane to a recessed volume, providing protection while maintaining installation efficiency.
2Reliability
If trenching is used to route cable below surface, then cable protection is improved, but installation time and cost are worsened
Solution Approach 1:
The pavement modification is segmented into two distinct features: a narrow recessed channel for cable placement and a wider recessed area for tape application. This segmentation allows for efficient milling and installation while providing adequate protection. The channel is milled to specific dimensions (e.g., 1/4 to 1/2 inch deep) to accommodate the cable, and the recessed area (e.g., 1 to 3 inches deep) accommodates the tape.
Solution Approach 2:
The solution replaces traditional mechanical trenching operations with a milling process that removes only the necessary amount of pavement material. Instead of excavating deep trenches and backfilling, the milling process creates precisely sized recessed channels and areas, significantly reducing installation time and material handling while providing sufficient cable protection.
3Productivity
If traditional aerial deployment is used, then installation speed is improved, but access rights and litigation are worsened
Solution Approach 1:
The solution extracts the cable routing problem from the aerial domain (which requires pole access rights) and places it in the ground domain by routing cables through recessed channels in paved surfaces. This extraction eliminates the need to share telephone poles and avoids the associated access rights issues and litigation while maintaining installation efficiency.
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
This method provides enhanced protection for fiber optic cables, reduces vehicle contact, and allows for snow plowing without dislodging the tape, offering a viable solution for all climate regions and environmental conditions, while minimizing installation time and cost.
Implementation Method 1
depositing the cable into the channel and securing with adhesive tape
Data Source
AI summary
A device for applying a distribution cabling tape system includes a distribution cabling tape having an adhesive capable of adhering to a concrete or asphalt substrate and a distribution cable. The device includes an endoscope camera, wherein movement of the device in one direction simultaneously applies both the distribution cable and the distribution cabling tape at a location on the substrate viewable by the endoscope camera. A method for registering a cable and a cabling tape into a channel in a concrete or asphalt substrate includes using an endoscope to view the location at which the cable and cabling tape are applied.