Multi-Drop Communication Interface for Intelligent Patching Controllers
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Solution Overview
Problem
Existing local area networks in intelligent patching systems face disruptions when controllers lose power or become inoperable, causing breaks in Ethernet transmission paths, which can lead to communication failures between controllers.
Innovation Solution
The implementation of a multi-drop communication transmission path in conjunction with Ethernet transmission paths, allowing controllers to communicate through a daisy-chain configuration even if Ethernet paths are lost, using a switched matched termination and a multi-drop communication termination control circuit to maintain connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a daisy-chain configuration is used to connect controllers, then communication efficiency and speed are improved, but the system becomes vulnerable to communication failures when a controller loses power or becomes inoperable
Solution Approach 1:
The system dynamically switches between Ethernet communication mode and multi-drop communication mode based on the operational status of controllers. When a controller becomes inoperable, the system automatically transitions from the faster Ethernet daisy-chain path to the more reliable multi-drop path, making the communication architecture adaptive rather than static
Solution Approach 2:
The communication path is segmented into multiple independent channels: Ethernet transmission paths for high-speed communication and multi-drop communication paths for reliable fallback. This segmentation allows the system to isolate failures to specific segments while maintaining communication through alternative segments
2Speed
If Ethernet transmission paths are used for controller communication, then data transmission speed is improved, but communication is disrupted when controllers lose power or become inoperable
Solution Approach 1:
The multi-drop communication path acts as an intermediary backup channel. When the primary Ethernet path fails due to controller power loss or malfunction, the system routes communications through this intermediary path, which is designed to remain functional under adverse conditions
Solution Approach 2:
The system changes communication parameters by switching between different communication protocols and physical paths. It transitions from Ethernet parameters (high speed, vulnerable to power loss) to multi-drop parameters (slower but more resilient), adapting parameters based on system conditions
3Reliability
If a backup communication path is implemented, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The communication interfaces are designed with multi-functionality, capable of operating in both Ethernet mode and multi-drop mode. This universal design eliminates the need for completely separate backup systems, reducing overall complexity while maintaining reliability
Solution Approach 2:
The patent merges Ethernet communication functionality and multi-drop communication functionality into a unified communication system. By combining these functions in single communication interfaces rather than maintaining completely separate systems, the overall device complexity is reduced
Data Source
AI summary
Communications interfaces are provided that include a connector port that has housing that defines a plug aperture and at least first through eighth contacts that extend into the plug aperture. These communications interfaces further include an Ethernet interface (e.g., an Ethernet switch) and a multi-drop communication interface (e.g., an RS-485 transceiver). First through fourth conductive paths are provided that electrically connect the respective first through fourth contacts of the connector port to the Ethernet interface. Fifth and sixth conductive paths are provided that electrically connect the respective fifth and sixth contacts of the connector port to the multi-drop communication interface.