Passive RFID Visual Indicators for Fiber Optic Identification
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Solution Overview
Problem
Current RFID systems in fiber optic networks face challenges such as reliance on proximity for operation, leading to inaccurate readings, difficulty in identifying individual connectors or ports, and the need for disconnection of fibers for identification, which complicates the process and can disrupt system operations.
Innovation Solution
Integration of passive RFID elements with visual indicators that receive an external RF signal to generate electrical signals, powering visual indicators like LEDs to change states, allowing for simple and reliable identification of components without the need for proximity or disconnection, using capacitors or trickle-fill batteries for energy storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passive RFID elements are used in fiber optic systems, then the cost and complexity of the system is reduced, but the read range is limited and proximity dependence increases
Solution Approach 1:
The patent introduces an active RFID element as an intermediary between the passive RFID element and the reader. The active element receives RF signals, amplifies them, and re-transmits them to activate passive elements, effectively extending the read range while maintaining the low complexity benefit of passive tags. This mediator resolves the contradiction by enabling long-range communication without requiring all RFID elements to be actively powered.
Solution Approach 2:
The system segments RFID elements into two categories: active RFID elements that serve as readers/relays, and passive RFID elements that serve as simple tags. This segmentation allows the system to combine the long read range of active elements with the low cost and simplicity of passive elements, resolving the contradiction between system complexity and identification accuracy.
2Measurement precision
If RFID readers are positioned close to connectors for accurate reading, then identification accuracy improves, but the ability to identify specific connectors in a panel is reduced due to proximity to multiple elements
Solution Approach 1:
The system employs feedback mechanisms where the active RFID element selectively activates and responds to specific passive elements based on their unique identifiers. The reader can send targeted RF signals that elicit specific responses from designated connectors, allowing accurate identification even when multiple connectors are present in close proximity. This feedback-based selection resolves the contradiction between reading accuracy and ease of operation.
Solution Approach 2:
The system dynamically controls which passive RFID elements are activated and which respond to reader queries. By dynamically selecting and addressing specific connectors based on their unique identifiers, the system can accurately identify individual connectors regardless of their physical proximity to other connectors or the reader position. This dynamic addressing capability resolves the contradiction between reading accuracy and operational ease.
3Measurement precision
If fiber optic connectors are disconnected to identify them, then accurate identification can be achieved, but system operations are disrupted and time is lost
Solution Approach 1:
The patent replaces the mechanical action of disconnecting connectors with an electromagnetic field-based identification system. RFID readers use RF signals to communicate with passive RFID elements on connectors without physical contact, eliminating the need for mechanical disconnection. This substitution resolves the contradiction by achieving accurate identification through electromagnetic fields rather than mechanical manipulation, thereby saving time and maintaining system operations.
Solution Approach 2:
The passive RFID element acts as an intermediary that carries identification information on the connector without requiring physical access or disconnection. The reader communicates with this intermediary through RF signals, obtaining identification data remotely. This intermediary approach resolves the contradiction by enabling identification without mechanical interaction, thus preventing time loss and system disruption.
4Measurement precision
If powered RFID elements are used, then read range and identification capability improve, but the cost and complexity of incorporating power sources and connections increases
Solution Approach 1:
The system segments RFID functionality into active and passive elements, allowing selective deployment. Active elements with power sources are used only where long read range is critical, while passive elements are used elsewhere to minimize complexity. This segmentation resolves the contradiction by enabling extended read range capabilities without universally implementing complex power supply systems throughout the entire fiber optic network.
Solution Approach 2:
The active RFID element serves as an intermediary that provides power and signal amplification to passive elements within its range. This mediator approach allows passive elements to achieve extended read range indirectly through the active element's RF signal, avoiding the need for each individual tag to have its own power source and complex electronics, thus resolving the contradiction between read range and power supply complexity.
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 accurate and unobtrusive identification of fiber optic components within complex networks, reducing errors and system disruptions by providing visual cues for component identification without requiring physical manipulation or complex power sources.
Implementation Method 1
a passive RFID element capable of receiving an external RF signal and generating an electrical signal in response
Implementation Method 2
visual indicators like LEDs to change states
Data Source
AI summary
There are provided components, connectors, receptacles, cables, and systems wherein passive RFID functionality is incorporated. Also provided are passive RFID elements in general. The passive RFID elements power visual indicators based on receipt of external RF signals. Passive energy storage devices may be employed to provide electrical energy to the visual indicators. The passive energy storage devices may be charged by the external RF signals. The visual indicators may operate continuously or according to a predetermined flashing pattern.