Optical Fiber Screening Apparatus Deceleration Control
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Solution Overview
Problem
Conventional methods struggle to effectively prevent fiber-strikes on the side of the feeding bobbin, especially with heavier bobbins, as they fail to stop the bobbin and capstan rotations within the necessary time, leading to potential damage and increased fiber-strike occurrences.
Innovation Solution
A screening apparatus and method that includes a feeding bobbin, a capstan, and a control unit which applies tension to the optical fiber and controls the rotation of the feeding bobbin and capstan to stop upon disconnection, with the capstan's deceleration rate synchronized with the bobbin's deceleration rate to manage the stopping time and prevent fiber-strikes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bobbin weight is increased to handle longer optical fiber lengths, then the productivity is improved, but the stopping time increases causing fiber-strike damage
Solution Approach 1:
The patent applies dynamic control by adjusting the deceleration rate of the capstan based on the bobbin's weight and remaining fiber length. The control unit dynamically modifies the capstan's rotation speed during the stopping process, creating a coordinated deceleration profile between the capstan and bobbin that prevents fiber-strike damage while handling heavy bobbins efficiently.
Solution Approach 2:
The patent changes the operational parameters by setting the capstan's deceleration rate as a function of the bobbin's deceleration rate. This parameter coordination ensures that both components slow down at matched rates, preventing the fiber from striking the bobbin during shutdown while maintaining high productivity with longer fiber lengths.
2Productivity
If the traveling speed of optical fiber is increased to improve productivity, then the productivity is improved, but the impact of fiber-strike increases causing more damage
Solution Approach 1:
The patent implements preliminary anti-action by detecting when the optical fiber breaks and immediately initiating a coordinated stopping sequence. The control unit detects the breakage event and preemptively controls both the capstan and bobbin to stop in a controlled manner, preventing the broken fiber end from striking the bobbin or feeding mechanism at high speed.
Solution Approach 2:
The patent uses feedback control by continuously monitoring the optical fiber tension and detecting breakage events. When a break is detected, the control unit receives feedback and automatically adjusts the capstan and bobbin rotation speeds to prevent fiber-strike damage, enabling safe high-speed operation.
3Device complexity
If the deceleration rate of capstan is not synchronized with bobbin, then the device complexity is reduced, but fiber-strike occurs due to uncoordinated stopping
Solution Approach 1:
The patent establishes a mathematical relationship between the capstan's deceleration rate and the bobbin's deceleration rate. By setting the capstan's deceleration as a function of the bobbin's deceleration rate, the system achieves coordinated stopping without requiring complex independent control algorithms, balancing simplicity with effectiveness.
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 approach effectively suppresses or prevents fiber-strikes on the feeding bobbin side regardless of the bobbin's weight, ensuring efficient stopping and reducing the risk of optical fiber damage.
Implementation Method 1
a tension application unit that applies a tension to the optical fiber fed out from the feeding bobbin
Implementation Method 2
a capstan that feeds the optical fiber fed out from the feeding bobbin into the tension application unit
Data Source
AI summary
Provided is a screening apparatus or the like of an optical fiber that can suppress or prevent occurrence of a fiber-strike on the side of a feeding bobbin regardless of the weight of the feeding bobbin. An embodiment has a feeding bobbin 12 that feeds out an optical fiber 10; a screening unit 16 that applies a tension to the optical fiber 10 fed out from the feeding bobbin 12; a first capstan 14 that feeds the optical fiber 10 into the screening unit 16; a winding bobbin 20 that winds the optical fiber 10 to which the tension is applied by the screening unit 16; and a control unit 70 that, when disconnection of the optical fiber 10 occurs due to the tension applied by the screening unit 16, controls the feeding bobbin 12 and the first capstan 14 so as to stop rotation of the feeding bobbin 12 and rotation of the first capstan 14 and sets a deceleration rate of the first capstan 14 in accordance with a deceleration rate of the feeding bobbin 12.