Slip Ring Multipath Signaling for High-Speed Data
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Solution Overview
Problem
Slip rings used in communication systems are noisy and lossy, limiting data communication speeds to low bandwidth due to interference and signal attenuation, especially in real-world applications with vibrations and thermal variations, and existing fiber-optic solutions are costly, space-intensive, and not radiation-hardened.
Innovation Solution
The use of modulation and multipath signaling techniques, where multiple copies of a signal are transmitted through spatially distributed electrical pathways in a slip ring, combined using Orthogonal Frequency Division Multiplexing (OFDM) and error correction, to ensure consistent data transport and combat multipath interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional single-path signaling is used through slip rings, then device complexity is low, but communication speed and reliability are limited due to noise and signal loss
Solution Approach 1:
The patent divides the single signal path into multiple parallel electrical pathways through the slip ring. Multiple copies of the signal are transmitted simultaneously through different physical paths (e.g., different contacts, brushes, and conductive elements), allowing the system to overcome the limitations of any single noisy path while maintaining overall signal integrity and achieving higher communication speeds.
Solution Approach 2:
The patent creates multiple identical copies of the data signal and transmits them through different electrical pathways in the slip ring. These copied signals experience different noise and attenuation characteristics, but by combining them at the receiver, the system achieves more reliable and faster communication than any single copy could provide alone.
2Reliability
If fiber-optic solutions are used to replace slip rings, then communication speed and reliability improve, but cost, space requirements, and implementation complexity increase
Solution Approach 1:
The patent uses the existing slip ring structure as an intermediary medium, transforming it from a simple passive connector into an active multipath transmission system. By applying modulation techniques and transmitting multiple signal copies through the conventional electrical pathways of the slip ring, the system achieves fiber-optic-like reliability without requiring physical replacement of the slip ring or its cabling.
Solution Approach 2:
The patent changes the transmission parameters by using modulation schemes (such as OFDM) and transmitting signals at multiple frequency bands or time slots through the slip ring. This transforms the conventional electrical signal transmission into a more robust multi-parameter communication system that achieves higher reliability while using the existing hardware infrastructure.
3Reliability
If multiple copies of signal are transmitted through multiple pathways, then communication reliability improves through error correction, but signal processing complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the receiver monitors the quality of received signals from multiple pathways, identifies errors or corrupted copies, and requests retransmission or selects the best available copies for reconstruction. This feedback loop enables error correction and maintains high data transport consistency while managing processing complexity through intelligent signal selection and combination.
Data Source
AI summary
A transmitter is configured to generate a signal carrying data. A signal splitter is configured to generate multiple copies of the signal. A slip ring includes first and second portions, one configured to rotate relative to the other. The slip ring also includes a first interface associated with the first portion and configured to receive the multiple copies of the signal. The slip ring further includes a second interface associated with the second portion. In addition, the slip ring includes multiple electrical pathways electrically coupling the first and second interfaces, where at least some of the electrical pathways are configured to transport the multiple copies of the signal from the first interface to the second interface. A signal combiner is configured to receive the multiple copies of the signal from the second interface and to generate a recovered signal. A receiver is configured to recover the data from the recovered signal.