Latched Relay Bypass Circuit for Power-Loss Ethernet Continuity
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Solution Overview
Problem
High availability networking devices face challenges in maintaining network functionality during extended power outages, as existing solutions are expensive and temporary, failing to provide reliable bypass mechanisms.
Innovation Solution
Implementing a bypass module using latched electromechanical relays to create a fail-to-wire connection between Ethernet ports, which maintains connectivity even during power loss without the need for backup power supplies, utilizing standard power monitoring circuits and CPLDs for detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high availability techniques and systems are implemented to maintain network functionality during power loss, then network availability is improved, but cost increases and the solution is only temporary
Solution Approach 1:
The patent extracts the power monitoring function from the main networking device and implements it as a separate, low-cost circuit that can detect power loss conditions and trigger bypass relays independently, eliminating the need for expensive backup power supplies while maintaining network availability
Solution Approach 2:
The invention uses inexpensive power monitoring circuits and electromechanical relays instead of costly backup power systems. The monitoring circuit is a simple, low-cost component that can detect power failure and activate the bypass mechanism, providing reliable network continuity without high expense
2Reliability
If backup power supplies are used to maintain connectivity during power outages, then network availability is improved, but space requirements and cost increase
Solution Approach 1:
The patent removes the need for backup power supplies by extracting only the essential function of power loss detection and bypass activation, implementing it through compact monitoring circuits and relays that occupy minimal space while providing extended operational capability
Solution Approach 2:
The invention replaces the mechanical/electrical backup power supply system with an electromechanical relay system controlled by a simple monitoring circuit. The relays use electromagnetic fields to switch connections, eliminating the need for physical backup power sources and reducing space requirements
3Reliability
If expensive high availability systems are implemented, then network reliability during power loss is improved, but cost and complexity increase
Solution Approach 1:
The patent segments the high availability function into independent, simple components: a power monitoring circuit that detects power loss, control logic that determines bypass activation, and electromechanical relays that execute the connection switch. This modular segmentation reduces overall system complexity while maintaining reliability
Solution Approach 2:
The monitoring circuit automatically detects power failure conditions and triggers the bypass relays without requiring complex external control systems. The system serves itself by using the presence or absence of power to directly control the bypass state, eliminating the need for sophisticated management infrastructure
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 solution ensures predictable network state and high availability by maintaining connectivity for extended periods without additional power, reducing costs and space requirements, and supporting hardened networking devices.
Implementation Method 1
latched electromechanical relay that maintains a bypass connection between a pair of Ethernet ports
Data Source
AI summary
A power loss detector monitors a power supply to a monitored networking device to detect an imminent power loss, where a port of the monitored networking device is connected to a bypass module. A bypass controller in a bypass module in response to detecting the imminent power loss, determines whether to bypass the monitored networking device; and in the event it is determined to bypass the monitored networking device, configures an electromechanical relay in the bypass module to create a new connection associated with the port of the monitored networking device that bypasses the monitored networking device. The configured electromechanical relay maintains the new connection for at least some time after the imminent power loss. The bypass module further includes one or more bypass settings which in turn include a bypass enable; determining whether to bypass the monitored networking device is based at least in part on the bypass enable.