Server Liquid Cooling Leak Detection Signal Generation
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Solution Overview
Problem
Existing information handling systems, particularly in IT environments, face challenges in effectively detecting liquid leaks within server systems, which can lead to accidental or malicious triggering of optical leak sensing systems.
Innovation Solution
A system and method for controlling the activation of a sequence of activity light flashes using a wideband pseudo random signal convolution operation, where the sequence is generated by encoding and decoding a sine wave with a pseudo random number (PN) and using exclusive OR (XOR) polarity inversion with a chipping code, ensuring unique flashing sequences for each leak sensing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical leak sensing systems are used to detect liquid leaks, then liquid leak detection capability is improved, but the system becomes vulnerable to accidental or malicious triggering
Solution Approach 1:
The patent applies parameter changes by modifying the optical signal characteristics through wideband pseudo-random signal convolution. The system transforms simple light flashes into complex coded sequences with specific temporal and spectral parameters that are difficult to replicate accidentally or maliciously, thereby changing the detection parameters to improve reliability while reducing false triggers
Solution Approach 2:
The patent introduces an intermediary layer of pseudo-random coding between the liquid detection mechanism and the optical output. This coding layer acts as a mediator that processes the detection signal and transforms it into a unique flash sequence, adding complexity that prevents accidental or malicious triggering while maintaining accurate leak detection
2Ease of operation
If simple light flash sequences are used for leak detection signaling, then ease of operation is improved, but eye safety and anti-tamper functionality deteriorate
Solution Approach 1:
The system changes the temporal and spectral parameters of the light signal by applying wideband pseudo-random convolution. This transforms simple flashes into complex sequences with varying intervals and patterns that enhance eye safety through reduced peak intensity while maintaining detectability, and provide anti-tamper functionality through unique coded sequences
Solution Approach 2:
The patent implements periodic action through structured flash sequences that follow specific temporal patterns defined by pseudo-random codes. The systematic variation in flash timing and duration creates recognizable patterns that are easier to process reliably while reducing peak exposure through distributed timing, thereby improving eye safety without sacrificing operational clarity
Data Source
AI summary
A system and method for reporting presence of liquid within an information handling system via a liquid detection operation. In certain embodiments, the liquid detection operation includes monitoring an information handing system chassis for presence of liquid within the information handing system chassis; determining when liquid is detected within the chassis of the information handing system chassis; and, reporting presence of liquid when liquid is detected within the information handling system chassis, the reporting being via generation of a sequence of light flashes, the sequence of light flashes being based upon a unique signal generation parameter.


