T-Shielded Bus Connector EMC and Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bus connectors and base modules fail to adequately address the increasing challenges of high-frequency interference and signal sensitivity due to limited shielding and inflexibility, particularly as data signals become faster and more susceptible to electromagnetic interference.
Innovation Solution
A T-shaped bus connector with a holding device for mechanical attachment, featuring complementary connecting devices arranged to allow for flexible assembly and shielding, utilizing a printed circuit board for routing data and energy signals, and incorporating shielding materials to enhance electromagnetic compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If standard mounting rails are used to fasten bus base modules, then the modules can be easily mounted and connected, but the shielding against electromagnetic interference is only partial and insufficient for high-frequency signals
Solution Approach 1:
The shielding housing is integrated into the bus base module structure, with the connector embedded within the shielded enclosure. The shielding housing surrounds the connector and signal paths, creating a nested configuration where the connector is protected by the housing, which itself is mounted on the standard rail. This resolves the contradiction by maintaining easy mounting while adding comprehensive electromagnetic shielding.
2Adaptability or versatility
If modules are removed from the bus system, then flexibility and reconfigurability are improved, but the data signals and power supply are interrupted
Solution Approach 1:
The bus system is segmented into independent bus base modules that can be individually mounted or removed. Each module contains its own connector and shielding housing, allowing modules to be reconfigured without affecting the entire system. The T-shaped connector design enables daisy-chaining where signal paths are maintained through remaining modules even when one module is removed, preserving both reconfigurability and signal continuity.
3Productivity
If data signals are transmitted at higher speeds, then productivity and data throughput are improved, but the signals become more susceptible to electromagnetic interference and common-mode interference
Solution Approach 1:
The shielding housing provides localized electromagnetic protection around the connector and signal paths where high-frequency signals are most vulnerable to interference. The shielding is strategically positioned to enclose the critical signal transmission areas, including the T-shaped connector regions, thereby protecting the high-speed data signals from external electromagnetic interference and reducing common-mode interference without requiring system-wide shielding.
4Ease of operation
If T-shaped bus connectors with three directly connected connectors are used, then connection simplicity is improved, but electromagnetic compatibility deteriorates due to lack of shielding
Solution Approach 1:
The connector and shielding housing are merged into an integrated assembly where the T-shaped connector with its three connectors is housed within the shielded enclosure. The housing is formed as a single integrated structure that encompasses all three connector interfaces, maintaining the simplicity of direct connections while adding comprehensive electromagnetic shielding around all signal paths simultaneously.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A holding device mechanically retains the connector on a mounting rail (300). The plug connectors (102,103) are constructed complementary to each other. A plug connector (104) is oriented perpendicular to plug connectors (102,103). The data and power bus lines are operated between the three plug connectors. A shielding material covers the plug connectors of the T-shaped bus connector (100).