Fan Characterization and Control System for IHS

The patent applies preliminary action by pre-defining multiple fan performance categories (e.g., Category 1, Category 2, etc.) with associated performance characteristics during system design. Each category represents a range of fan performance levels, and the system is pre-configured to recognize and operate with fans from future vendors without requiring firmware updates. This allows the system to accommodate unknown future fan devices while maintaining reliability and avoiding downtime.

The patent applies self-service by enabling fans to automatically identify their performance category through simple hardware signals (e.g., voltage levels on specific pins) without requiring complex embedded intelligence in each fan. The system controller automatically detects these signals and assigns the appropriate fan performance category, eliminating the need for expensive smart fans with onboard memory and communication capabilities. This reduces both fan cost and overall system complexity while maintaining adaptability.

The patent applies universality by designing a fan performance categorization system that can accommodate multiple fan vendors and future devices through a unified framework. Instead of creating vendor-specific firmware updates, the system uses universal performance categories that any fan vendor can map their products to. This allows the system to support new fan vendors immediately upon installation without requiring subsequent firmware updates, eliminating update downtime and ensuring continuous operation.