Imaging-Based Door Control for Timely Closure and Boarding

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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 to identify moving objects approaching an opening, evaluates their movement parameters, and adjusts door operations to prevent delays by anticipating user arrival times and ensuring timely closure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If the door control device determines user boarding intention based on speed threshold in captured images, then the door operation can be automated, but unnecessary delays occur when closing the door

Engineering Contradiction:

Improvedoor operation automationVSAvoiddoor operation delay

Core Design Contradiction:

Extent of automationVSLoss of time

Solution Approach 1:

The system performs preliminary analysis of imaging data to predict whether a moving object will reach the opening by a predetermined timing before actually closing the door. By evaluating future arrival probability in advance based on current position and movement speed, the system avoids unnecessary delays while maintaining automated operation.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If the door control device waits for allowable time to elapse before forcing door closure, then user boarding is accommodated, but users with urgent needs may be excluded

Engineering Contradiction:

Improveuser boarding convenienceVSAvoidtimely door closure

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system continuously monitors imaging data to track the position and movement speed of approaching objects, providing real-time feedback on arrival probability. This feedback mechanism allows the system to dynamically adjust door closure timing, accommodating users who need more time while ensuring timely closure when no users are approaching.

Inventive Principle:

Principle #23Feedback

3Device complexity

If the door control device uses simple speed threshold comparison, then the control logic is simple, but accuracy in predicting user arrival is insufficient

Engineering Contradiction:

Improvecontrol logic complexityVSAvoiduser arrival prediction accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The system dynamically evaluates arrival probability by continuously analyzing changes in position and speed of moving objects in chronological imaging data. Instead of using fixed thresholds, the system adapts its prediction based on the actual movement trajectory and velocity changes, improving prediction accuracy while maintaining relatively simple control logic.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP4672166A1Door control device and storage medium

Publication Date: 2025.12.31 TOYOTA JIDOSHA KK

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AI summary

A door control device (10) includes one or more processors (11). The one or more processors (11) are configured to: in a door (6) provided in an opening (7), execute opening and closing control of the door (6) based on imaging data of a predetermined imaging range in an external region of the opening (7); analyze the imaging data in chronological order; from a predetermined region of the imaging data, extract one or more moving objects (R) that move toward the opening (7); before at least one of the extracted moving objects (R) reaches the opening (7), determine whether each of the at least one extracted moving objects (R) reaches the opening (7) by a predetermined timing; and execute a closing action of the door (6) when it is determined that there is no moving object (R) that reaches the opening (7) by the predetermined timing.