Shield Member for Wire Noise Mitigation
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Solution Overview
Problem
Existing electromagnetic shield tools for insulated wires experience a reduction in wire radiation emission mitigation effect as the length of the insulated wire increases, due to the placement of grounded sheet members at the ends, leading to inefficient noise reduction.
Innovation Solution
A shield member configuration that includes a flexible conductive shield covering the wire, ground conductors connected to the shield, and auxiliary shield and ground conductors to enhance noise mitigation by allowing noise to flow to ground potential, improving radiation emission reduction across a wider frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the length of the insulated wire is increased, then the length of the sheet member must also increase, but the wire radiation emission mitigation effect is reduced
Solution Approach 1:
The shield member is divided into multiple sheet members that are connected together. Each sheet member has a manageable length that can be effectively grounded, and they are arranged in series along the wire to provide continuous shielding over the entire length, resolving the contradiction between wire length and shielding effectiveness
Solution Approach 2:
Connection conductors are introduced as intermediary elements to electrically connect adjacent sheet members and ground conductors. These intermediaries ensure continuous electrical connectivity and effective grounding across the entire shield member assembly, maintaining mitigation effectiveness regardless of the total wire length
2Device complexity
If sheet members are grounded only at the two ends, then the structure is simple, but the radiation emission mitigation effect is reduced for longer wires
Solution Approach 1:
The grounding structure is segmented into multiple ground conductors distributed along the wire length, with each segment independently grounded. This segmentation allows effective noise drainage at multiple points along the wire, improving mitigation effectiveness without creating excessive complexity
Solution Approach 2:
The grounding approach transitions from a one-dimensional end-point grounding to a distributed multi-point grounding system. By adding ground conductors at intermediate positions along the wire's length, the system creates additional grounding dimensions that improve effectiveness without proportionally increasing 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
The proposed configuration effectively mitigates electrical noise emissions from wires by allowing noise to flow through multiple conductive paths to ground potential, improving the radiation emission mitigation effect even at higher frequencies and reducing attachment complexity and space requirements.
Implementation Method 1
a shield conductor (12) that is electrically conductive and covers an outer surface of at least one wire
Implementation Method 2
at least one ground conductor (20) configured to electrically connect the shield conductor (12) to a ground potential
Data Source
AI summary
A shield member (10) disclosed herein includes a flexible conductor (12) that is electrically conductive and covers the outer surface of at least one covered wire (W); at least one ground conductor (20) that electrically connects the flexible conductor (12) to a body ground (G); an auxiliary shield conductor (30) that covers the outer surface of the ground conductor (20); and an auxiliary ground conductor (35) that electrically connects the auxiliary shield conductor (30) to the body ground (G).