Vehicle Door Entrapment Detection Sensor Verification

The sensor operates in periodic cycles, alternating between a determination period for door entrapment detection and an operation verification period for sensor functionality checking. This periodic operation prevents continuous erroneous outputs by pausing entrapment detection when sensor malfunction is detected during verification periods.

The system implements feedback by monitoring the sensor's own output signals during operation verification periods. The control unit analyzes whether the sensor responses are consistent with expected behavior during door opening/closing cycles, and uses this feedback to determine whether to trust subsequent entrapment detection outputs.

The door opening/closing operation serves dual purposes: it performs the necessary door entrapment detection function and simultaneously verifies sensor operability. The same sensor outputs during normal door operations are reused for verification, eliminating the need for separate verification hardware or test mechanisms.

The sensor verifies its own operability by analyzing its own output signals during door opening/closing cycles. The control unit monitors whether the sensor produces expected responses during these cycles, allowing the system to self-diagnose sensor functionality without external verification equipment.

The sealing portion acts as an intermediary element that naturally comes into contact with and rotates the rotary body during door closing operations. This existing mechanical feature of the door assembly is repurposed to provide the rotation needed for sensor verification, avoiding the need for dedicated rotation actuators or motors.

The system recovers and utilizes the natural rotational motion that occurs during normal door closing operations. Instead of discarding this motion as incidental, it is captured and used for sensor verification purposes, extracting additional functionality from existing door mechanics without adding rotation-generating components.