Adaptive Status Indicator Power Management for Network Devices

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Solution Overview

Problem

High-density network devices waste significant energy due to unobserved status indicator lights, such as LEDs, which remain active even when no human operator is present, leading to substantial energy consumption and costs, especially in large-scale enterprise networks.

Innovation Solution

Implementing a power management system that configures status indicator lights to operate in a low power consumption state by default and transition to a normal power state only when specific conditions are met, such as the presence of an operator, error detection, or scheduled business hours, using mechanisms like motion detection, environmental sensors, and configurable timeout periods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If status indicator lights remain active continuously, then technicians can easily monitor link status and troubleshoot issues, but energy consumption increases significantly

Engineering Contradiction:
Improvelink status monitoring capabilityVSAvoidenergy consumption of indicator lights
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power management for status indicator lights by transitioning between different power states (fully on, dimmed, off) based on detected conditions such as operator presence, error states, and time of day. This resolves the contradiction by making the lighting system adaptive rather than static, maintaining full functionality when needed while conserving energy during normal operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters of the indicator lights including brightness level and power state based on various conditions. By adjusting these parameters dynamically, the system maintains troubleshooting capability when required while significantly reducing energy consumption during routine operation, thus resolving the contradiction between reliability and energy use.

Inventive Principle:
Principle #35Parameter changes

2Use of energy by moving object

If status indicator lights are dimmed or turned off to save energy, then energy consumption decreases, but technicians have reduced visibility for monitoring and troubleshooting

Engineering Contradiction:
Improveenergy consumption of indicator lightsVSAvoidvisibility of status indicator lights
Core Design Contradiction:
Use of energy by moving objectVSIllumination intensity

Solution Approach 1:

The system dynamically adjusts illumination intensity based on detected conditions rather than maintaining a fixed state. When operators are present or error conditions occur, the lights transition to higher brightness states for optimal visibility. During normal operation without operators, the lights dim or turn off to conserve energy, thus resolving the contradiction between energy consumption and visibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system employs periodic assessment of operational conditions (operator presence, error states, time of day) to determine appropriate lighting states. This periodic evaluation ensures that visibility is maintained when needed while allowing energy-saving dimming or shutdown during appropriate periods, resolving the contradiction between illumination intensity and energy consumption.

Inventive Principle:
Principle #19Periodic action

3Loss of information

If all status indicator lights are activated continuously, then complete system status information is always visible, but power costs increase substantially in large-scale networks

Engineering Contradiction:
Improvesystem status information availabilityVSAvoidpower consumption of indicator lights
Core Design Contradiction:
Loss of informationVSLoss of energy

Solution Approach 1:

The system applies different power states to different indicator lights based on local conditions and priorities. Critical error indicators maintain higher visibility while less critical status indicators may be dimmed or turned off. This selective approach ensures essential system status information remains available while significantly reducing overall power consumption in large-scale network devices.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system periodically evaluates system state and operator presence to determine which indicator lights should be active at any given time. This periodic assessment allows the system to maintain complete status information availability when needed while allowing selective dimming or shutdown of non-critical indicators during normal operation, thus resolving the contradiction between information availability and energy loss.

Inventive Principle:
Principle #19Periodic action

4Reliability

If status indicator lights operate at full power continuously, then optimal visibility and information display are maintained, but environmental impact increases due to higher energy consumption

Engineering Contradiction:
Improvestatus information display qualityVSAvoidenvironmental impact from energy consumption
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically adjusts its operational state based on actual needs, transitioning between full power, dimmed, and off states. This ensures optimal status information display quality when operators are present or errors occur, while minimizing energy consumption and environmental impact during normal operation without operators, thus resolving the contradiction between display quality and environmental impact.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters including power state and brightness level based on detected conditions. By adjusting these parameters dynamically, the system maintains high-quality status information display when required while reducing energy consumption and associated environmental impact during appropriate periods, resolving the contradiction between reliability and harmful environmental effects.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8242926B2Energy-saving status indicator
Publication Date: 2012.08.14 CISCO TECHNOLOGY INC
  • US8242926B2 patent drawing
  • US8242926B2 patent drawing
  • US8242926B2 patent drawing

AI summary

The embodiments described herein present methods and apparatus for an energy-saving status indicator. A method includes receiving a configuration of a first power consumption state for a status indicator light in a network device. The method then activates the first power consumption state using the configuration. After detecting a condition, the method activates a second power consumption state for the status indicator light. The transition from the first power state to the second power state may be from a low power state to a normal operating state or from a normal operating state to a low power state in various embodiments. Other embodiments are described.