Door Actuator Control for Lateral Approach Intent Detection
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Solution Overview
Problem
Existing door systems struggle to accurately detect and respond to individuals approaching transversely to the door system, leading to unnecessary openings and reduced actuation comfort.
Innovation Solution
A method that involves detecting a person's approach laterally to the door system, identifying parameter sets comprising distance, approach angle, and speed, determining the desire to enter based on these parameters, and opening the door only when a desire to enter is confirmed, utilizing a learning mechanism to improve detection accuracy over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the door system opens for every detected person in the monitored region, then no person approaching is missed, but unnecessary openings occur for lateral passersby
Solution Approach 1:
The sensor field is divided into different zones with different weights: a first sensor zone in front of the door opening direction with higher weight, and a second sensor zone for lateral approaches with lower weight. This local differentiation allows the system to treat detections in different regions differently, reducing false positives from lateral passersby while maintaining sensitivity for intended users.
Solution Approach 2:
The system changes the detection parameters dynamically by adjusting sensitivity thresholds and time windows based on the detected zone and movement characteristics. For lateral approaches in the second zone, the system requires longer detection durations or multiple detections before triggering door opening, effectively changing the operational parameters to reduce false activations.
2Object-generated harmful factors
If the door system waits for confirmed entry intention, then unnecessary openings are reduced, but detection accuracy for lateral approaches improves
Solution Approach 1:
The system performs preliminary analysis of movement patterns, detection zones, and temporal characteristics before making the final decision to open the door. By evaluating multiple parameters in advance (detection zone, approach angle, speed, duration), the system confirms entry intention before actuation, reducing false positives while maintaining accuracy for genuine users.
Solution Approach 2:
The system continuously monitors detection results and adjusts its decision-making based on accumulated data about user behavior patterns. The control unit evaluates ongoing sensor inputs against learned patterns to dynamically adjust detection thresholds and confirmation requirements, improving both precision and reliability over time.
Data Source
AI summary
A method for operating a door actuator of a door system, having at least one movable door leaf and a control device, which is designed to control the drive of the door leaf, and having a sensor unit, which is designed to detect at least one person in a region before the door system, and transmits information about the person to the control device, includes at least the following steps; a) detecting a person approaching the door system laterally, b) identifying a parameter set (P) having the distance (A) changing in time, the approach angle (□) and/or the speed (S) of the person relative to the door system, c) determining the desire to enter of the person approaching laterally on the basis of a comparison of the currently identified parameters with stored parameters and d) opening the door leaf only in the case of the determined desire to enter.