Vehicle Combination Cable Noise Reduction
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Solution Overview
Problem
Noise interference and cross-talk occur between twisted pair wires in conventional combination cables for vehicles, potentially leading to malfunctions.
Innovation Solution
A combination cable design featuring a wire bundle with a two-core first twisted pair wire, a two-core second twisted pair wire, a one-core first wire, and a one-core second wire, where the first twisted pair wire is used for ABS, the second twisted pair wire for ADS, and the first and second wires for EPB, with the first twisted pair wire positioned on one side of the center line and the second twisted pair wire on the other, ensuring a physical distance between them, and optionally using a shielding conductor and varying twist pitches to reduce electromagnetic noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple twisted pair wires are bundled together in a combination cable, then the cable can transmit multiple signals and power, but noise interference and cross-talk occur between the twisted pair wires
Solution Approach 1:
The cable is divided into multiple independent bundles, with each bundle containing a specific twisted pair wire. These segmented bundles are arranged in a circular cross-section with defined positional relationships, physically separating the twisted pair wires to reduce electromagnetic interference while maintaining the cable's multi-functionality for signal and power transmission
Solution Approach 2:
Different regions of the cable cross-section are assigned different functions: signal transmission regions contain twisted pair wires with specific twist pitches optimized for minimizing cross-talk, while power transmission regions contain separate wires. This local differentiation ensures that each component operates with optimal characteristics for its specific function, reducing overall noise interference
2Volume of moving object
If twisted pair wires are placed close together to reduce cable size, then the cable becomes more compact, but electromagnetic noise and cross-talk increase
Solution Approach 1:
The cable adopts a circular cross-sectional layout where twisted pair wires are positioned at specific angular intervals around the center axis. This spatial arrangement in the angular dimension allows adequate separation between signal-carrying twisted pairs while maintaining a compact overall cable diameter, effectively reducing electromagnetic noise without increasing cable volume
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 configuration effectively reduces noise interference and cross-talk between the twisted pair wires by maintaining a physical distance and using shielding to minimize electromagnetic noise, ensuring reliable operation of vehicle systems.
Implementation Method 1
there is an issue that noise interference and cross-talk may occur between the twisted pair wires
Data Source
AI summary
Provided is a combination cable for a vehicle that is capable of reducing noise interference and cross-talk between twisted pair wires. The combination cable for a vehicle includes a wire bundle and a sheath covering the wire bundle. The wire bundle includes a two-core first twisted pair wire, a two-core second twisted pair wire, a one-core first wire, and a one-core second wire. When viewed in cable cross-section, the wire bundle has the first twisted pair wire disposed on one side of a center line that runs from a center of the first wire to a center of the second wire, and has the second twisted pair wire disposed on the other side of the center line, and the first twisted pair wire and the second twisted pair wire are separated from each other.