Duct Mapping Unit for Fiber Cable Blowing Route Planning
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Solution Overview
Problem
Existing methods for installing fiber optic cables into ducts are inefficient due to the lack of accurate duct mapping, leading to potential cable sticking or incorrect installation strategies, especially in complex duct paths, resulting in time-consuming trial and error processes.
Innovation Solution
A data recording unit with tracking electronics is passed through the duct to collect position information, which is used to map the duct, including its length and bend details, and can be connected with other units for additional functions like cleaning or sensing, with a modular design allowing selection based on duct size and type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If duct mapping is performed using traditional trial and error methods, then cable installation can be completed, but installation time increases and efficiency decreases
Solution Approach 1:
The patent applies preliminary action by performing duct mapping before cable installation. A data recording unit is blown through the duct beforehand to collect position, bend, and dimensional data, creating a digital map that guides the subsequent cable installation process. This eliminates trial-and-error methods and enables planned installation routes.
Solution Approach 2:
The patent uses an intermediary device (data recording unit with GPS/positioning electronics) to capture duct characteristics. This unit acts as a mediator between the duct infrastructure and the installation process, providing objective measurement data that informs installation decisions without being part of the final cable system.
2Ease of operation
If cable installation is performed without accurate duct mapping, then installation process is simpler, but cable may become stuck requiring reinstallation
Solution Approach 1:
The system performs preliminary duct characterization by sending a data recording unit through the duct before cable installation. This captures bend radii, slope changes, and restriction points, enabling operators to plan installation strategies that prevent cable sticking while maintaining operational simplicity.
Solution Approach 2:
The patent implements feedback by using the collected duct mapping data to inform installation decisions. The digital map provides real-time reference information about duct conditions, allowing operators to adjust blowing pressure, cable feed rate, and installation techniques to match actual duct characteristics and prevent problems.
3Reliability
If multiple cable blowing steps are used to ensure successful installation, then cable installation reliability improves, but installation time and complexity increase
Solution Approach 1:
The system determines the optimal number of blowing steps during the preliminary mapping phase. By analyzing duct length, bend complexity, and elevation changes from the data recording unit, the system calculates whether one or multiple blowing operations are needed, eliminating unnecessary steps and reducing installation time while ensuring reliability.
Solution Approach 2:
The patent uses parameter changes by adjusting installation parameters (blowing pressure, cable feed rate, segment length) based on the duct mapping data. For complex ducts requiring multiple blows, the system optimizes each blow's parameters to maximize efficiency and minimize total installation time while ensuring successful cable delivery.
Data Source
AI summary
A unit that houses tracking electronics configured to be passed through a duct while the tracking electronics collect position information is provided. The information collected by the unit is used to map the duct. A method of mapping a duct is also provided.