Dynamic Input Sampling Circuit for Wrong-Side Signal Detection

The patent implements dynamic sampling of input signals at periodic intervals rather than continuous monitoring. The sampling circuit periodically captures the state of input signals and compares them with expected values, allowing the system to detect fixed signals that indicate device failures. This periodic detection mechanism resolves the contradiction by providing reliable failure detection without requiring continuous operation that could exacerbate failure conditions.

The patent employs a feedback mechanism where the sampling circuit continuously monitors input signals and compares them against expected logical states. When a discrepancy is detected (indicating a fixed signal condition), the system generates an alarm or corrective action. This feedback loop enables real-time detection and response to signal failures, improving reliability while preventing misjudgment by immediately identifying abnormal conditions.

The patent extracts only the critical monitoring function from the overall signal processing system. Instead of continuously analyzing all signal characteristics, the sampling circuit selectively captures specific input signals at defined intervals and compares them against predefined expected states. This extraction approach maintains detection accuracy for failure conditions while significantly reducing system complexity by focusing only on essential monitoring tasks.

The patent applies partial monitoring by sampling signals at specific intervals rather than continuously monitoring all signals without interruption. The sampling circuit performs monitoring actions only when needed (at sampling moments), rather than maintaining constant high-level monitoring activity. This partial action approach achieves sufficient detection precision for safety-critical failure detection while reducing overall system complexity and resource usage compared to exhaustive continuous monitoring.