Multi-Protocol Network Port Circuit With Signal Isolation
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Solution Overview
Problem
Existing interface circuits struggle to support multiple network protocols and data rates, leading to compatibility issues and interference between different transceiver modules.
Innovation Solution
A network port circuit with a first transceiver module common to all two-wire ports and individually assigned second transceiver modules, each supporting different protocols and data rates, along with high frequency blocking circuits to isolate signals and ensure voltage supply, is implemented.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transceiver modules supporting different protocols are integrated into a single interface circuit, then protocol compatibility and adaptability are improved, but signal interference and operational reliability deteriorate
Solution Approach 1:
The interface circuit is divided into multiple independent port circuits, each handling a specific protocol. The switching unit segments the signal paths, ensuring that transceiver modules operating with different protocols are electrically isolated from each other. This prevents signal interference while maintaining support for multiple protocols through the switching mechanism.
Solution Approach 2:
The switching unit acts as an intermediary between transceiver modules with different protocols. It selectively connects the two-wire bus to the appropriate transceiver module based on the active protocol, mediating between conflicting signal requirements and ensuring reliable communication without direct interference between different protocol interfaces.
2Device complexity
If a single transceiver module handles multiple protocols, then device complexity is reduced, but data rate performance and protocol-specific optimization deteriorate
Solution Approach 1:
The interface circuit employs dynamic switching between different transceiver modules based on the active protocol. The switching unit dynamically connects the two-wire bus to the appropriate transceiver module, allowing each module to operate at its optimized data rate for its specific protocol rather than being constrained by a single multi-protocol module.
3Adaptability or versatility
If transceiver modules operate in parallel on the same two-wire bus, then adaptability to different devices is improved, but signal interference and protocol conflicts worsen
Solution Approach 1:
The switching unit segments the two-wire bus connection, ensuring that only one transceiver module is electrically connected to the bus at any given time. This temporal segmentation eliminates signal interference between parallel-operating transceiver modules while maintaining device compatibility through protocol-based switching.
Solution Approach 2:
Each port circuit is designed with protocol-specific characteristics and impedance matching optimized for its designated protocol. The switching unit ensures that each transceiver module operates with locally optimized signal parameters, preventing interference while maintaining compatibility with devices using different protocols.
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
Enables seamless integration of devices with varying protocols and data rates, maintaining signal integrity and compliance with explosion protection standards, while ensuring uninterrupted voltage supply.
Implementation Method 1
A high frequency blocking circuit can be arranged between the two-wire bus connections and the first transceiver module. Particularly, this high frequency blocking circuit can be configured to selectively deblock or block the passage of high frequency signals, however, to always allow direct current and direct voltage signals to pass.
Data Source
AI summary
The present disclosure relates to a network port circuit which uses transceiver modules and which function according to various protocols and at various bit rates. The transceiver module having a low bit rate is connected in parallel with all two-wire ports. The transceiver modules which function according to a second network protocol and at a higher data rate are individually assigned to the individual two-wire ports. Independently of the activation of the individual transceiver modules, a voltage source is active for supplying power to the two-wire buses connected to the dual-wire ports.