Swivelling Gate Sensors Detect Entry Direction
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Solution Overview
Problem
Existing pivoting door systems do not effectively account for the direction of person access, leading to potential collisions and inadequate control over access authorization.
Innovation Solution
A pivoting door system with sensors monitoring areas in front of and behind the door leaf, combined with an access card reader, allows the door to open in the appropriate direction based on the person's entry direction, ensuring safe and authorized access or exit, with a control unit managing the door's operation and incorporating features like illumination for access feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single sensor monitors only one side of the door, then the device complexity is low, but the ability to detect access direction and prevent collisions is insufficient
Solution Approach 1:
The monitoring area is segmented into two distinct zones: one in front of the front side of the door panel and another in front of the back side. Two separate sensors are assigned to each zone, enabling independent detection of access direction and improving collision prevention without creating a overly complex integrated sensor
2Ease of operation
If the card reader is positioned at the base pillar head above the pivoting door holder, then accessibility for users is improved, but the device complexity and installation complexity increase
Solution Approach 1:
The base pillar head is designed to serve multiple functions: it provides structural support for the pivoting door holder, houses the card reader for access control, and positions the sensor for monitoring. This multi-functional integration improves user accessibility while managing manufacturing complexity through unified design
3Measurement precision
If sensors are positioned in the base pillar foot below the pivoting door holder, then the monitoring coverage is improved, but the installation complexity increases
Solution Approach 1:
The sensors are positioned in the base pillar foot at a lower vertical dimension, allowing them to monitor the area in front of the door panel from below. This dimensional repositioning improves detection accuracy for access direction while the base pillar structure provides a ready-made mounting platform, managing installation complexity
4Speed
If the pivoting door holder is positioned in the central area of the base column, then the dynamic performance is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The pivoting door holder is extracted and positioned in the central area of the base column, separating the pivoting function from the mounting structure. This central positioning optimizes dynamic performance and pivoting speed, while the base column provides a robust reference framework that accommodates the precision positioning requirements
Data Source
Figure 1
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AI summary
The present invention relates to a swing door system (10) for a pedestrian passage with a rigid base column (12), a swing door holder (18) pivotably mounted on the base column (12), a door leaf (20) held in the swing door holder (18) with a front (20a) and a back (20b), an access card reader (26) and with a first sensor (22) and a second sensor (24), wherein the first sensor (22) monitors an area (S1) in front of the front (20a) of the door leaf (20) and wherein the second sensor (24) monitors an area (S2) in front of the back (20b) of the door leaf (20).