Multi-Sensor Closed-Loop Thermal Control for Air-Mover Speed
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Solution Overview
Problem
Existing closed-loop thermal control systems in information handling systems face computational complexity and limitations due to multiple feedback loops and manual sensor selection for air mover speed, which complicates temperature management and increases computational load.
Innovation Solution
A thermal control system that receives temperature measurements from multiple sensors, selects a representative measurement, and generates a control signal to regulate air mover speed based on this selection, eliminating the need for manual entries and reducing computational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple closed-loop feedback loops are used to determine air mover speed based on multiple temperature sensors, then temperature control coverage is improved, but computational complexity increases
Solution Approach 1:
The patent merges multiple temperature sensor inputs into a single unified feedback loop. Instead of running separate closed-loop calculations for each sensor, the system combines all temperature readings and processes them through one consolidated control algorithm that determines a single air mover speed, thereby reducing computational complexity while maintaining comprehensive temperature control coverage
Solution Approach 2:
The unified feedback loop serves multiple temperature sensors simultaneously, making the control system universal. The single control loop can handle inputs from any number of temperature sensors and appropriately controls the air mover based on the collective thermal state, eliminating the need for separate dedicated loops for each sensor
2Adaptability or versatility
If manual entries are required in the power budget table to identify sensors for air mover speed calculation, then sensor selection flexibility is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically selects and processes temperature sensor data without requiring manual configuration. The unified feedback loop autonomously determines which sensor readings to use and how to weight them, eliminating the need for users to manually populate power budget tables while still providing flexible adaptation to different sensor configurations through automated detection and processing
3Device complexity
If limited sensors are used with manual entries in the power budget table, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The unified feedback loop is designed to universally accept data from multiple temperature sensors simultaneously. The system can process and utilize temperature readings from any number of sensors without requiring additional configuration complexity, automatically adapting to the available sensor suite and utilizing all provided data for comprehensive thermal management
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 approach optimizes air mover speed control by integrating multiple sensor data efficiently, reducing computational overhead and enhancing thermal management without requiring a power budget table, thus improving system performance and efficiency.
Implementation Method 1
a plurality of temperature sensors, each temperature sensor configured to generate a respective temperature measurement
Implementation Method 2
an air mover configured to drive air to cool the information handling system
Implementation Method 3
select a selected temperature measurement from the respective temperature measurements for temperature-based closed loop control of the thermal control system
Data Source
AI summary
An information handling system may include a plurality of temperature sensors, each temperature sensor configured to generate a respective temperature measurement, an air mover configured to drive air to cool the information handling system, and a thermal control system for controlling the air mover. The thermal control system may be configured to receive the respective temperature measurements from the plurality of temperature sensors, consume all the available sensor data, select the one with lowest margin based on its maximum temperature value, and select a selected temperature measurement from the respective temperature measurements for temperature-based closed loop control of the thermal control system, and generate a control signal for controlling a speed of the air mover based on the selected temperature measurement.