Blade Current Sensor Throttles Processor Frequency to Protect Fuse
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Solution Overview
Problem
The existing chassis design for computing devices, which includes fuses to protect blades from excessive current, results in significant downtime when a fuse blows, especially when newer, more powerful blades are used with older chassis having lower power-rated fuses, as the fuses are not easily replaceable with higher-rated ones.
Innovation Solution
The implementation of a current sensor and logic circuitry in each blade to monitor and control the processor's frequency, reducing power consumption by throttling the CPU when the current drawn approaches a threshold that could damage the fuse, thereby preventing fuse blowout and maintaining operational safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If newer, more powerful blades with higher current draw are used in older chassis, then processing power and performance are improved, but the fuse may blow due to excessive current, causing significant downtime
Solution Approach 1:
The system performs preliminary action by monitoring current draw before the fuse blows. The logic circuitry continuously senses current levels and takes preventive action by throttling the processor frequency when the current approaches the fuse rating, thereby preventing fuse blowout before it occurs.
Solution Approach 2:
The system implements feedback by using a sense resistor to continuously monitor the current drawn by the blade and feeding this information back to the logic circuitry. Based on this feedback, the system dynamically adjusts the processor frequency to maintain current within safe limits, resolving the contradiction between allowing high power draw and preventing fuse damage.
2Reliability
If the processor frequency is throttled to reduce current draw, then fuse protection is maintained, but processing speed and performance decrease
Solution Approach 1:
The system applies dynamics by making the processor frequency adjustable rather than fixed. The logic circuitry dynamically changes the processor frequency based on real-time current measurements, allowing the system to operate at high speeds when current is low and reduce speed only when necessary to prevent fuse damage, thus resolving the contradiction between speed and protection.
Solution Approach 2:
The system changes the operational parameter of processor frequency in response to current conditions. When current draw exceeds a threshold, the system changes the frequency parameter to a lower value, thereby reducing power consumption and current draw while maintaining fuse protection, resolving the contradiction between maintaining high performance and ensuring safety.
3Reliability
If a fuse is replaced after blowing, then circuit protection is restored, but significant downtime occurs due to fuse replacement
Solution Approach 1:
The system applies preliminary anti-action by preventing the harmful event (fuse blowout) before it occurs. Through continuous current monitoring and proactive frequency throttling, the system prevents fuse damage, thereby eliminating the need for fuse replacement and the associated downtime, resolving the contradiction between maintaining protection and minimizing time loss.
Solution Approach 2:
The system implements self-service by automatically monitoring current and adjusting processor frequency without human intervention. The logic circuitry continuously checks current levels and self-regulates the processor to prevent fuse blowout, eliminating the need for manual fuse replacement and reducing downtime, thus resolving the contradiction between maintaining protection and minimizing time loss.
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
This solution effectively reduces the risk of fuse blowout by dynamically managing the processor's frequency based on sensed current levels, ensuring continued operation and minimizing downtime by maintaining power within safe limits, even with blades that draw higher currents.
Implementation Method 1
a current sensor configured to sense a current drawn by the blade
Data Source
AI summary
The speed of a processor is adjusted based on the current sensed by a current sensor in order to protect a fuse from being damaged.