Door Closing Control Using Predicted Arrival of Approaching Users
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Solution Overview
Problem
Existing door control systems incur unnecessary delays or fail to allow boarding when determining user intentions based on speed and time thresholds, leading to operational inefficiencies and potential user exclusion.
Innovation Solution
A door control device that analyzes imaging data chronologically to extract moving objects, determines their approach to an opening, and executes closing actions only when no object will reach the opening by a predetermined timing, using movement vectors and threshold comparisons to optimize door operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door control device stops the closing action when a user is detected moving toward the door, then user boarding is enabled, but unnecessary delays occur in vehicle operations
Solution Approach 1:
The system performs preliminary analysis of imaging data to extract moving objects and predict their arrival at the opening before the door closing action is executed. By determining in advance whether a moving object will reach the opening by predetermined timing, the system can make informed decisions about whether to stop the closing action, thereby avoiding unnecessary delays while still enabling user boarding when needed.
2Productivity
If the door control device forcibly performs closing action after an allowable time elapses, then vehicle departure is ensured, but users with boarding intention may be excluded
Solution Approach 1:
The system continuously analyzes imaging data in chronological order and updates the determination of whether moving objects will reach the opening by predetermined timing. This feedback mechanism allows the system to adjust the door closing action based on real-time observations, ensuring that users who are approaching the door are not excluded, while still enabling timely vehicle departure when no users are approaching.
3Device complexity
If the door control device uses speed threshold comparison to detect user intention, then simple detection is achieved, but inaccurate determination of user boarding intention occurs
Solution Approach 1:
Instead of relying solely on speed threshold comparison, the system introduces a temporal dimension by analyzing imaging data in chronological order and predicting future positions of moving objects. The system determines whether moving objects will reach the opening by predetermined timing, which combines spatial information with temporal progression, thereby improving detection accuracy without significantly increasing system complexity.
Data Source
AI summary
A door control device includes one or more processors. The one or more processors are configured to: in a door provided in an opening, execute opening and closing control of the door based on imaging data of a predetermined imaging range in an external region of the opening; analyze the imaging data in chronological order; from a predetermined region of the imaging data, extract one or more moving objects that move toward the opening; before at least one of the extracted moving objects reaches the opening, determine whether each of the at least one extracted moving objects reaches the opening by a predetermined timing; and execute a closing action of the door when it is determined that there is no moving object that reaches the opening by the predetermined timing.