Flexible Optical Waveguides for Coolant Leak Detection in Tight Spaces
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Solution Overview
Problem
Existing information handling systems face challenges in detecting coolant leaks efficiently, which can lead to corrosion and damage to circuitry due to the complex geometries and narrow spaces within the systems, particularly in liquid cooling systems.
Innovation Solution
An optical detector system utilizing flexible waveguides and light sources, such as UV LEDs, coupled with a photodetector array, to detect coolant leaks by reflecting and absorbing light with specific wavelengths, enabling early detection and initiation of alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If traditional detection methods are used, then the detection process is simple, but the detection capability in narrow spaces and complex geometries is insufficient
Solution Approach 1:
The patent transitions from traditional point-based or line-based detection to volumetric detection by filling narrow spaces with fluorescent coolant. This dimensional change allows the detection system to illuminate and detect leaks throughout the entire volume of complex geometries rather than requiring direct line-of-sight access to specific points.
Solution Approach 2:
The patent introduces fluorescent coolant as an intermediary substance that absorbs light at one wavelength and emits at another. This intermediary enables indirect detection of leaks in areas where direct optical access is blocked by complex geometries, as the fluorescent coolant distributes itself throughout the narrow spaces and can be detected from external locations.
2Adaptability or versatility
If rigid waveguides are used, then the structural stability is high, but the ability to access narrow spaces and complex geometries is limited
Solution Approach 1:
The patent employs flexible waveguides that can bend and conform to the complex internal geometries of information handling systems. These flexible waveguides maintain sufficient structural stability to guide light effectively while being able to navigate narrow spaces and irregular shapes that rigid waveguides cannot access.
Solution Approach 2:
The waveguide system transitions from a static, rigid structure to a dynamic, flexible structure that can adapt its shape. This allows the waveguide to be positioned optimally within complex geometries while maintaining light transmission capability, combining adaptability with functional stability.
3Reliability
If early detection is implemented, then the potential damage is reduced, but the system complexity increases
Solution Approach 1:
The system performs preliminary detection by continuously monitoring for fluorescent coolant leakage before it can cause significant damage. The dual-wavelength detection system identifies leaks at early stages when the coolant first escapes, enabling prompt response and prevention of corrosion or short circuits.
Solution Approach 2:
The patent replaces mechanical or electrical detection methods with optical detection using fluorescent markers. This substitution enables more sensitive and earlier detection of leaks, as the optical system can detect trace amounts of fluorescent coolant that would be imperceptible to traditional sensors, thereby improving reliability.
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 identifies coolant leaks through flexible waveguides, providing early warning and reducing potential damage by illuminating narrow spaces and complex geometries within information handling systems.
Implementation Method 1
A first flexible waveguide is communicatively coupled to the light source
Implementation Method 2
The light is reflected from an object illuminated by the first flexible waveguide
Implementation Method 3
The reflected light is transmitted to the sensor via the second flexible waveguide
Implementation Method 4
a sensor configured to absorb light emitted from objects illuminated by the light source
Data Source
AI summary
An optical detector for detecting a coolant leak from a liquid cooling system within an information handling system includes a light source and a sensor configured to absorb light emitted from objects illuminated by the light source. A first flexible waveguide is communicatively coupled to the light source, and a second flexible waveguide is communicatively coupled to the sensor. The optical detector is configured to detect a potential coolant leak in response to the sensor absorbing light having a predetermined characteristic. The light is reflected from an object illuminated by the first flexible waveguide. The reflected light is transmitted to the sensor via the second flexible waveguide.