Hybrid Cable Design for Sensitive Detectors
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Solution Overview
Problem
Existing cables for sensitive detectors, such as neutrino detectors, face issues with faulty data transmission due to mechanical connection instability and light signal leakage from optical fibers, necessitating improved power and data transmission solutions.
Innovation Solution
Hybrid cables with shielded power and data delivery components, featuring stranded conductors and fluorinated ethylene propylene insulation, designed to transmit power and data signals efficiently while minimizing electromagnetic interference, with a compact design suitable for small ducts and conduits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If optical fibers are used for data transmission, then data transmission capability is improved, but mechanical connection stability deteriorates leading to faulty data transmission
Solution Approach 1:
The patent removes optical fibers from the cable construction entirely, extracting the problematic component that caused mechanical connection instability. Instead, it uses only electrical conductors for both power and data transmission, eliminating the core alignment and intimacy issues that plagued optical fiber implementations in sensing applications.
Solution Approach 2:
The patent replaces the optical fiber mechanical connection system with an electrical conductor system. By using twisted pair electrical conductors with individual shielding and foam insulation, it substitutes the fragile optical alignment mechanism with a more robust electrical connection system that is less sensitive to mechanical variations.
2Object-affected harmful factors
If shielded conductors are used for power delivery, then electromagnetic interference protection is improved, but cable complexity increases
Solution Approach 1:
The patent divides the cable into distinct functional segments: power delivery conductors with individual shielding, data transmission twisted pairs with individual shielding, and an overall cable shield. This segmentation allows each component to be optimized independently while maintaining overall system simplicity through modular construction.
Solution Approach 2:
The patent applies shielding selectively to specific conductors based on their function. Power delivery conductors receive individual foil shielding, data twisted pairs receive individual foil shielding, and the entire cable has an overall braid shield. This localized application of shielding provides targeted EMI protection without unnecessarily complicating the entire cable structure.
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
The hybrid cables ensure stable and reliable transmission of power and data signals up to 2.5 GHz over 100 meters, reducing signal loss and crosstalk, and are compatible with sensitive detectors, enhancing their performance and reliability.
Implementation Method 1
The power delivery component may include shielded conductors
Implementation Method 2
The twisted pairs of the data delivery component may be configured to transmit data signals up to 2.5 GHz over a distance of at least 100 m
Implementation Method 3
stranded conductors and fluorinated ethylene propylene insulation
Data Source
AI summary
A hybrid cable for use with sensitive detectors may include a central power delivery component, a data delivery component positioned around the power delivery component, and a jacket formed around the power delivery component and the data delivery component. The power delivery component may include a plurality of shielded first individually insulated conductors. The data delivery component may include four twisted pairs of second individually insulated conductors and respective shield layers formed around each of the four pairs. An outer diameter of the cable may be less than 8.5 mm, and the cable may be capable of transmitting data within an operating frequency range of up to 2.5 GHz over a distance of at least 100 m.