Shielded Wiring Interconnection for EMI Filtering and Sensor Integrity
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Solution Overview
Problem
Existing electrical wiring systems fail to provide comprehensive protection against both high-frequency and low-frequency electromagnetic disturbances, leading to interference with low-level sensor measurements.
Innovation Solution
An electrical wiring interconnection system with a protection device located between the rear connection and shielding element, implementing a predetermined electronic function that ensures both low-frequency isolation and high-frequency electrical continuity, using components like capacitors or inductive elements to establish a 360° electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the shielding element is connected directly to the rear connection, then high-frequency electromagnetic protection is improved, but low-frequency signal integrity deteriorates due to current distortion
Solution Approach 1:
The patent introduces a protection device as an intermediary component between the shielding element and the rear connection. This protection device includes a capacitor that acts as a mediator: it provides a low-impedance path for high-frequency electromagnetic disturbances to ground through the shielding element, while simultaneously blocking low-frequency sensor signals from being distorted by currents flowing through the shielding connection. The capacitor's frequency-dependent impedance characteristics enable it to selectively pass high-frequency noise while blocking low-frequency measurement signals.
2Object-affected harmful factors
If the shielding element is connected to the rear connection, then electromagnetic protection is improved, but device complexity increases due to additional protection components
Solution Approach 1:
The patent merges the protection function with the existing shielding element and rear connection structure. The protection device is integrated into the conventional wiring system by connecting the capacitor between the shielding element and the rear connection, rather than requiring a completely separate protection system. This merging approach allows the shielding element to continue serving its primary function while adding the frequency-selective protection capability through the capacitor, thereby improving electromagnetic protection without proportionally increasing overall system 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
Simultaneously protects against high-frequency and low-frequency electromagnetic disturbances, maintaining signal integrity for low-level sensors by integrating a filtering function that ensures both low-frequency insulation and high-frequency continuity.
Implementation Method 1
said protection device comprises a capacitor
Implementation Method 2
said protection device comprises an inductive element
Data Source
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AI summary
The present invention relates to an electrical wiring interconnection system comprising: - at least one electrical cable (10) comprising at least one electrical wire, and for each electrical cable: - a rear connection (12); - a connector (14) suitable for being connected to an electrical potential reference; - at least one shielding element (26, 34) of said electrical cable; said at least one electrical cable being connected to said connector via said rear connection, and a protection device (28, 36), located between said rear connection and said at least one shielding element of each electrical cable, and configured to apply a predetermined electronic function of electrical connection between the rear connection and said at least one shielding element, substantially established over the entire circumference of said at least one shielding element.