Cooling Unit Fail-Safe Control During Central Controller Loss
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Solution Overview
Problem
Data centers face cooling failures when the central controller or communication path between the controller and air conditioning units fails, leading to potential damage from prolonged manual adjustments.
Innovation Solution
A fluid moving device configured to operate in both global and local modes, allowing it to remain operational even when the global controller is unavailable, by using sensors to detect conditions and adjust fluid flow characteristics autonomously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If air conditioning units are controlled by a central controller under global policy, then energy usage is optimized, but system reliability deteriorates when the central controller or communication path fails
Solution Approach 1:
The control system is segmented into a central controller for global policy management and local controllers embedded in each air conditioning unit for autonomous operation. This segmentation allows the system to maintain centralized energy optimization when the central controller is available, while enabling independent local operation when communication fails, thus resolving the contradiction between energy optimization and system reliability.
Solution Approach 2:
The air conditioning units can change their operational parameters dynamically based on controller availability. When the central controller is available, units operate under global policy parameters for energy optimization. When communication fails, units switch to local control parameters that maintain adequate cooling, thus adapting parameters to resolve the reliability-energy efficiency contradiction.
2Device complexity
If manual adjustments are used to respond to controller failures, then system complexity is reduced, but response time increases causing damage to computer systems
Solution Approach 1:
The air conditioning units are equipped with local controllers that enable self-service operation when the central controller is unavailable. The units autonomously detect communication failures and switch to local control mode without requiring manual intervention, thus maintaining low system complexity while achieving rapid automatic response to prevent computer system damage.
3Object-affected harmful factors
If air conditioning units shut down upon controller failure, then system safety is improved, but cooling capability is lost causing damage to computer systems
Solution Approach 1:
The system implements beforehand cushioning by embedding local controllers within each air conditioning unit that are pre-configured to take over control when communication with the central controller fails. This prior preparation ensures that cooling capability is maintained through local autonomous operation, preventing computer system damage while avoiding unsafe shutdown conditions.
Data Source
AI summary
In a method for operating a fluid moving device, the fluid moving device is operated under one of a local mode where the fluid moving device operates autonomously and a global mode where the fluid moving device operates based upon instructions received from a global controller, and where the fluid moving device is operated under the local mode as a fail-safe operation to the global mode.