Automotive Lamp Scanning Light Source Abnormality Detection

The patent applies preliminary action by performing abnormal state detection at specific judgment timings immediately before switching between lighting-on and lighting-off states. This timing strategy allows the system to detect abnormalities during stable periods before transitions occur, ensuring sufficient detection time while maintaining the high-speed scanning operation. The control apparatus is configured to execute detection at these predetermined judgment timings, proactively identifying issues before they manifest during critical switching moments.

The patent implements feedback by continuously monitoring the actual lighting state and comparing it with the instructed state at specific judgment timings. The control apparatus detects abnormalities by determining whether the actual lighting state matches the instructed state, creating a closed-loop feedback system. This feedback mechanism ensures reliable abnormal state detection despite rapid switching, as each transition is verified against the control signal, allowing the system to maintain high adaptability while ensuring detection reliability through systematic state verification.

The patent applies periodic action by establishing regular judgment timings that occur at fixed intervals immediately before each state transition. The control apparatus is configured to perform abnormal state detection at these periodic judgment timings, creating a rhythmic detection pattern that synchronizes with the lighting switching cycle. This periodic approach simplifies control timing compared to continuous monitoring, as the system only needs to execute detection at these predetermined periodic moments, reducing computational complexity while maintaining high detection precision through consistent timing.