Thermal Sensor Cooling Fan Controller for Safe Component Handling
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Solution Overview
Problem
The increased heat production in information handling systems poses risks to technicians during servicing, as traditional power-off sequence time delays are not always accurate, potentially leading to injuries or prolonged downtime due to insufficient or excessive cooling.
Innovation Solution
A system comprising a cooling fan, sensor, and controller that detects the power-down sequence and adjusts cooling based on predetermined policies, providing alerts when information handling resources have reached a safe temperature for handling, ensuring accurate thermal monitoring and user safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed time delay is used after power-off to ensure safety, then technician safety is improved, but system downtime increases
Solution Approach 1:
The patent applies dynamics by transitioning from a static fixed time delay to a dynamic cooling period that adjusts based on real-time temperature sensor readings. The system continuously monitors component temperatures and extends or shortens the cooling period accordingly, allowing the safety mechanism to adapt to actual thermal conditions rather than using a predetermined fixed duration.
Solution Approach 2:
The patent implements feedback by using temperature sensors to continuously monitor component temperatures during the cooling period and providing this information back to the controller. The controller then adjusts the cooling period duration based on this feedback, extending it if temperatures remain high or shortening it if components cool sufficiently, creating a closed-loop safety mechanism.
2Loss of time
If a short time delay is used after power-off, then system downtime is reduced, but technician safety is compromised
Solution Approach 1:
The patent replaces the mechanical timer-based delay system with an electronic sensor-based detection system. Instead of relying on a predetermined mechanical countdown, the system uses temperature sensors and electronic controllers to detect actual component temperatures and determine when safe handling conditions are met, substituting mechanical timing with electronic thermal detection.
Solution Approach 2:
The system performs self-service by automatically monitoring its own thermal state through integrated temperature sensors and autonomously determining when components are safe to handle. The controller continuously assesses temperature data and independently decides when the cooling period should end, without requiring external timing devices or manual temperature assessment by technicians.
3Temperature
If cooling fans operate at high speed continuously, then cooling efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by operating cooling fans in intermittent cycles rather than continuously. The controller activates fans during the cooling period when components need thermal management, then deactivates them once safe handling temperatures are achieved, creating a periodic on-off operation pattern that reduces overall energy consumption while maintaining effective cooling when needed.
Solution Approach 2:
The patent implements parameter changes by adjusting fan operating parameters (speed, duration) based on real-time temperature conditions. The controller modifies fan speed levels and operational duration according to the thermal state of components, using higher speeds when temperatures are critical and reducing or stopping fan operation when components have cooled to safe levels, thereby optimizing energy consumption.
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 system effectively reduces risks to technicians by ensuring information handling resources are safely cooled and made available for servicing, minimizing downtime and injury risks while adhering to predetermined thermal safety standards.
Implementation Method 1
controlling the operation of the cooling fan based at least on a first criteria of a predetermined policy
Implementation Method 2
a sensor thermally coupled to at least one of the plurality of information handling resources
Data Source
AI summary
Systems and methods for safe handling of information handling resources are provided. In some embodiments, a method is provided. The method may include detecting occurrence of a power down sequence and in response to detecting of the power down sequence, controlling operation of a cooling fan coupled to information handling resources based at least on a first criteria of a predetermined policy. The method may include receiving a signal from a sensor, the signal indicating a thermal property of a particular information handling resource coupled to the sensor. The method may include determining if the thermal property satisfies a second criteria of the predetermined policy, the second criteria comprising a safe temperature range for handling the particular information handling resource. If the thermal property meets the second criteria, the method may provide an alert via an indicator to a user indicating the particular information handling resource is safe for handling.