Smart Breaker Adaptive Trip Value for Partially Populated Telecom Devices
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Solution Overview
Problem
Conventional fault protection systems in telecommunications devices, such as DSLAMs, are inadequate when the devices are partially populated with line cards, leading to potential damage from excessive fault currents due to fixed trip points that do not account for varying power requirements.
Innovation Solution
A smart breaker system with a current detector and controller that adjusts the trip value based on detected current flow and stored configuration information, including the number and power usage of installed line cards, to provide adaptive fault protection and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional circuit breakers with fixed trip points are used, then fault protection is provided for fully populated devices, but inadequate protection occurs when devices are partially populated with line cards
Solution Approach 1:
The circuit breaker trip point is changed from a fixed value to a dynamically adjustable value that adapts to the actual number of installed line cards. The controller receives population information and automatically sets the appropriate trip point, enabling the protection system to adapt to different device configurations without manual intervention.
Solution Approach 2:
The trip current parameter of the circuit breaker is changed based on the device population status. The system stores multiple trip point values corresponding to different line card installation scenarios and selects the appropriate parameter value automatically, transforming a static parameter into a context-dependent one.
2Reliability
If circuit breakers are set for fully populated devices, then adequate protection is provided when fully populated, but excessive trip points cause inadequate protection when partially populated
Solution Approach 1:
The system performs preliminary detection of the device population status before a fault occurs. By knowing the actual number of installed line cards in advance, the controller can pre-set the appropriate trip point, ensuring that when a fault occurs, the correct protection level is already in place rather than using a default over-protective setting.
Solution Approach 2:
The system implements feedback by continuously monitoring the device population status and adjusting the trip point accordingly. The controller receives information about which line cards are installed and uses this feedback to automatically configure the protection parameter, creating a closed-loop system that adapts to actual operating conditions.
3Power
If higher trip points are used to protect fully populated devices, then full power capacity is supported, but power consumption increases and protection is inadequate for partial population
Solution Approach 1:
The system changes the power consumption parameter dynamically based on the actual load requirements. By adjusting the trip point to match the number of installed line cards, the system ensures that the power supply and protection system are sized appropriately for the actual power demand, avoiding the energy waste associated with oversized configurations.
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 smart breaker system effectively protects telecommunications devices from electrical faults by setting a trip value 20% to 50% greater than the current requirements, reducing the risk of damage and optimizing power usage, even when devices are partially populated.
Implementation Method 1
The current detector comprises at least one Hall Effect sensor
Data Source
AI summary
A telecommunications system includes a telecommunications device having “n” line card slots for receiving “n” line cards powered from a power supply. The device includes at least one installed line card. A smart breaker is connected to the telecommunications device and includes a current detector configured to detect current flow from the power supply through the smart breaker to any installed line cards. A controller has logic and is configured to select a trip value in response to the detected current flow and stored configuration information relating to any installed line cards within the telecommunications device.