Power Over Ethernet Switch Bypass for Critical Device Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems that transmit data and power over the same line create co-dependency issues, where power disruptions to devices like security and networking devices can lead to data loss and system instability, and relying on independent power systems like batteries is costly.
Innovation Solution
Implementing a power over Ethernet system where handshaking signals continuously communicate between devices, allowing configuration updates to maintain power to critical devices during disruptive events like initialization or software updates, without the need for an independent power source, by using a switch and controller to override disabling signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If data and power are transmitted over the same line, then cost is reduced by using the same cable and conductors, but co-dependency issues arise where power disruptions to the power source device also disrupt power to sensitive devices
Solution Approach 1:
The patent segments the power control into two independent pathways: a control pathway through the power source device that manages normal operations, and a bypass pathway through the switch that maintains power to critical devices during power source disruptions. This segmentation allows the system to reduce cable usage while maintaining reliability for sensitive devices.
Solution Approach 2:
The switch acts as an intermediary device between the power source device and sensitive devices. It receives classification information about critical devices and uses this to selectively bypass disabling signals, thereby mediating between the power source device's power management functions and the need for continuous power to sensitive devices.
2Reliability
If an independent power system such as a battery is installed locally, then power to sensitive devices is maintained during power disruptions, but cost increases significantly
Solution Approach 1:
The switch serves multiple functions: it normally routes power through the power source device for controlled power management, but also provides a bypass pathway for critical devices when needed. This multi-functionality eliminates the need for separate battery systems while maintaining power continuity for sensitive devices.
Solution Approach 2:
The system uses the existing power over Ethernet infrastructure and switch to provide power protection for sensitive devices, rather than requiring external independent power systems. The switch automatically detects critical device status and activates the bypass pathway without external intervention, making the system self-protecting.
3Adaptability or versatility
If handshaking signals are used for constant communication between devices, then configuration information can be exchanged and critical devices identified, but system complexity increases
Solution Approach 1:
The handshaking signals perform preliminary classification of devices as critical or non-critical during the initial connection phase. This preliminary action allows the switch to be pre-configured with bypass capabilities for critical devices before any power disruptions occur, simplifying the response to future events.
Solution Approach 2:
The continuous handshaking communication provides feedback about device status and classification to the switch. This feedback mechanism allows the system to dynamically adjust power pathways based on real-time device needs while using standardized communication protocols, balancing adaptability with complexity.
Data Source
AI summary
A method includes receiving a signal to maintain uninterrupted power to a device over a power over Ethernet line. The power over Ethernet line is configured to carry data and power. Power delivery is maintained for the device regardless of a power disruptive event associated with a power source device. Carrying the power to the device over the power over Ethernet line is interrupted in absence of the receiving the signal. According to one embodiment, the signal is generated in response to a user command or it may be generated from the device automatically. The signal may classify the device as a critical device. The power disruptive event may include initialization of a data path, alteration to a data path associated with the power over Ethernet line, a software update associated with the power source device, reset of power source device, etc.