Optical Detection Device for Conduit Air Flow Verification
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Solution Overview
Problem
The current methods for installing optical fibre units through pre-laid conduits are labor-intensive and costly, often requiring two operators due to uncertainties in conduit mapping and potential obstructions, which can lead to incorrect or incomplete fibre installations, especially in FTTP initiatives where efficiency and cost-effectiveness are critical.
Innovation Solution
A device that uses a light-based detection system to confirm the arrival of compressed air and fibre units at the remote end of the conduit, allowing a single operator to verify correct conduit selection and fibre path integrity, featuring a piston mechanism that changes light beam detection to signal air and fibre arrival, enabling unambiguous confirmation and automatic response to complete the installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two operators are used during fibre installation, then the reliability of installation is improved, but the cost and labor intensity increase
Solution Approach 1:
The system enables self-service installation by providing automatic feedback to the operator about air and fibre arrival at the remote end. The optical detection system monitors conduit status and communicates back to the head end, allowing the operator to work independently without requiring a second operator at the destination end.
Solution Approach 2:
The patent implements a feedback mechanism where the remote end device detects air flow and fibre cable arrival, then transmits status information back to the head end operator. This real-time feedback loop replaces the need for human-to-human communication between operators and enables single-operator installation while maintaining reliability.
2Device complexity
If conventional installation methods are used, then the process is simple, but the risk of incorrect conduit selection and mapping errors increases
Solution Approach 1:
The patent replaces manual conduit identification methods (visual inspection, physical tracing) with an optical detection system. The optical sensor automatically detects air flow and fibre arrival, eliminating manual errors in conduit selection and mapping while maintaining operational simplicity through automated status indication.
3Device complexity
If manual monitoring of fibre arrival is used, then the equipment is simple, but the time required for installation increases
Solution Approach 1:
The optical detection system operates continuously to monitor air flow and fibre cable arrival in real-time. This continuous monitoring eliminates the need for periodic manual checks and provides immediate notification when the fibre reaches the remote end, significantly reducing installation time while keeping the device relatively simple.
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
Enables single-operator installation with reduced costs and increased efficiency by providing clear confirmation of air and fibre arrival, reducing the risk of incorrect or incomplete installations and improving the reliability of fibre path establishment in FTTP networks.
Implementation Method 1
an optical transmitter and an optical receiver are provided in the housing, in which a light beam or signal from the optical transmitter can be received by the optical receiver
Data Source
Figure 1A~2B
Figure 3A~4B
Figure 5~6
AI summary
A device for use with a conduit having a first conduit end and a conduit second end, into which conduit a cable can be installed using a flow of air into the first conduit end, the device being suitable for confirming that the flow of air is exiting the second conduit end, the device comprising - a housing (20), - means to enable connection of the device to the second conduit end, - a light source (31), - a detector (35) arranged to detect a presence or absence of a light signal, and - a light shield (26), wherein in use, the flow of air entering the device causes the light shield (26) and at least one of the light source (31) or the detector (35), to move to and to stay at a position relative to the other, permitting the detector to detect detections comprising one or more of - a presence or absence of the light signal, - an intensity level of the light signal, - a change in the presence or absence of the light signal, or - a change in the intensity level of the light signal.