Sliding Door Light Projection for Access Control
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Solution Overview
Problem
Existing access control systems for buildings often compromise user-friendliness while maintaining safety requirements, and there is a need for a technology that effectively communicates status information and adapts to user intentions and access authorization in a flexible and secure manner.
Innovation Solution
An access control system utilizing a sliding door with a light projection device to display status information and a detection system that recognizes user intentions through manual interruptions, combined with facial recognition or radio-based credential verification, allowing for adaptable access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional access control systems use fixed displays or keypads mounted on doors, then security is maintained, but user-friendliness and adaptability to different situations deteriorate
Solution Approach 1:
The patent applies dynamics by replacing static displays and keypads with a dynamic light projection system that can change its output based on real-time conditions. The projection device adapts its status information display according to door state, access authorization status, and environmental factors, making the interface both user-friendly and highly adaptable without requiring physical reconfiguration
Solution Approach 2:
The system changes parameters by dynamically adjusting the projected light patterns, colors, and information content based on various conditions such as door position, access authorization, and user presence. This allows the same physical device to present different information states, improving both ease of operation and adaptability simultaneously
2Ease of operation
If access control systems provide detailed status information to users, then user-friendliness improves, but security and privacy protection deteriorate
Solution Approach 1:
The patent applies local quality by providing different information to different users based on their authorization levels and current context. The projection system displays tailored status information - such as door state, access status, or instructions - only to authorized users who need that specific information, rather than providing universal visibility of all system states
Solution Approach 2:
The light projection device serves as an intermediary that translates complex security states into simple, intuitive visual cues for users. Instead of exposing raw security data or requiring users to interpret complex system states, the projection medium conveys essential information in an easily understandable format while maintaining security protocols
3Measurement precision
If manual interruption detection is implemented for user intention recognition, then access control precision improves, but device complexity increases
Solution Approach 1:
The system applies self-service by using the existing light projection infrastructure to also perform detection functions. The same projection device that displays status information also detects user interruptions by monitoring changes in light reflection or absorption when users interact with the projected patterns, eliminating the need for separate complex detection hardware
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enhances user experience by providing clear status information and secure access management, ensuring user-friendliness and safety through flexible adaptation to current conditions and intentions.
Implementation Method 1
The light projection device is designed to project status information specified by the controller for a user requesting access to the restricted-access zone as a visible light projection onto a projection surface
Data Source
AI summary
A system for controlling access to a restricted-access area in a building has a sliding door system and a controller for the sliding door system. The sliding door system has a door frame and a sliding door which can be moved in the door frame between a closed position and an open position by a drive unit. The door frame has a passage region and a wall shell region which at least partially accommodates the sliding door in the open position. A controller is arranged on the sliding door and is communicatively connected to the drive device. The controller is designed to control a movement of the sliding door between the closed position and an open position. A light projection device is arranged in an interior of the sliding door and is communicatively connected to the controller. The light projection device is designed to project status information specified by the controller for a user requesting access to the restricted-access area as a visible light projection onto a projection surface.