Vehicle Door Hold Control for Preventing Passenger Lost Articles
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Solution Overview
Problem
Despite warnings, passengers often alight vehicles without noticing left or dropped articles, leading to increased occurrences of lost items.
Innovation Solution
A lost article prevention device equipped with sensors to detect items inside the vehicle cabin, communication devices to receive alighting point information, and controllers to determine if items are present, which control the door to remain closed if items are detected, ensuring passengers notice before exiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a warning system is installed to alert passengers about lost articles, then the awareness of lost articles is improved, but the effectiveness in preventing lost articles is insufficient because passengers may still alight without noticing the warning
Solution Approach 1:
The door is kept closed before the passenger alights as a preliminary action to prevent the passenger from leaving without noticing the lost article warning. This physical constraint ensures the passenger must return to check for lost articles before the door opens, making the warning effective rather than just informational.
2Reliability
If the door is kept closed to ensure passengers notice lost articles, then the prevention of lost articles is improved, but the convenience of passenger alighting is reduced
Solution Approach 1:
The door closing state is dynamically adjusted based on the detection results. The door remains closed only when lost articles are detected and the passenger has not yet alighted. Once the passenger alights or no lost articles are detected, the door closes normally. This dynamic control balances prevention effectiveness with operational convenience.
Solution Approach 2:
The system uses sensor detection feedback to determine whether to maintain the door closed state. The controller continuously monitors sensor data and adjusts the door state accordingly, creating a feedback loop that automatically balances security and convenience based on real-time conditions.
3Reliability
If the door remains closed until lost articles are retrieved, then the occurrence of lost articles is reduced, but the time for passenger alighting is increased
Solution Approach 1:
The door closed state is applied partially - only when lost articles are detected and only for the duration needed to alert the passenger. The system does not keep the door closed indefinitely but maintains it closed just long enough to ensure the passenger notices the warning, then allows normal operation to resume, minimizing time loss while maintaining effectiveness.
Data Source
AI summary
A lost article prevention device includes a sensor, a communication device, and a controller. The sensor is configured to detect a state inside a vehicle cabin. The communication device is configured to receive alighting point information being information of an alighting point of a passenger. The controller is configured to determine whether or not a vehicle has arrived at the alighting point on a basis of the alighting point information, and determine whether or not a lost article of the passenger is present in the vehicle cabin on a basis of a detection result of the sensor. The controller releases a closed state of a door when the vehicle is determined to have arrived at the alighting point and the lost article is determined not to be present, and maintains the closed state of the door when the vehicle is determined to have arrived at the alighting point and the lost article is determined to be present.