Elevator Audio Orientation System for Accessibility
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Solution Overview
Problem
Sight-impaired individuals face difficulties in using elevator systems due to the inability to locate operating panels and buttons, which can be challenging for both entering and exiting, especially when carrying large objects or navigating elevators with multiple entrances.
Innovation Solution
The integration of audio orientation systems within elevator systems, including proximity sensors and speakers, which generate auditory signals to guide passengers to the operating panels and provide feedback on button selections, allowing for hands-free operation and improved accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional visual button interfaces are used in elevators, then the operating panel is simple and cost-effective, but sight-impaired passengers cannot locate or operate the buttons
Solution Approach 1:
The patent replaces the traditional visual mechanical button interface with an acoustic field-based interaction system. Audio speakers emit directional sound beams that replace visual displays, and microphones detect acoustic signals from users. This substitution enables sight-impaired passengers to interact with the elevator system through sound rather than sight, resolving the accessibility issue while maintaining system functionality.
Solution Approach 2:
The patent introduces acoustic waves as an intermediary between the user and the elevator control system. Sound beams serve as the medium to convey information about button locations and states, while acoustic signals from the user's device act as the intermediary for detecting user intent. This intermediary layer enables communication with sight-impaired users without requiring direct visual contact with the interface.
2Adaptability or versatility
If audio orientation systems are added to assist sight-impaired passengers, then accessibility is improved, but device complexity and cost increase
Solution Approach 1:
The patent designs the acoustic system to serve multiple functions simultaneously. The same audio speakers that provide orientation information to sight-impaired passengers also serve as the primary interface for all users. The microphones detect both acoustic signals from assistive devices and general ambient sounds for safety monitoring. This multi-functionality increases accessibility while minimizing the addition of separate dedicated systems.
Solution Approach 2:
The system enables sight-impaired users to independently operate the elevator through acoustic feedback and detection without requiring assistance from others. The audio orientation system provides self-contained guidance, and the acoustic signal detection allows users to autonomously indicate their floor selections or emergency needs, making the accessibility feature self-sufficient.
3Reliability
If infrared or optical sensors are used for contactless button activation, then hygiene is improved, but the system requires precise object detection which may not work for all users
Solution Approach 1:
The patent changes the detection parameter from optical reflection (infrared) to acoustic wave detection. Instead of measuring reflected light which requires precise alignment and object properties, the system detects acoustic pressure waves from the user's device or voice. This parameter change broadens the range of detectable user actions and makes the system more reliable across different user conditions and environments.
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 audio orientation system enhances the usability of elevator panels for sight-impaired passengers by providing real-time auditory feedback, ensuring safe and accurate navigation and operation of elevator systems, reducing confusion and improving accessibility.
Implementation Method 1
each button may have an associated proximity sensor configured to detect a presence of a passenger within a button detection zone
Implementation Method 2
audio orientation systems within elevator systems, including proximity sensors and speakers, which generate auditory signals to guide passengers
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
Elevator systems and operating methods including an elevator operating panel (416) having at least one button (418,518A) and an audio orientation system (300,500). The audio orientation system (300,500) includes at least one speaker positioned proximate the elevator operating panel (416) and a proximity sensor associated with an associated button (418,518A) and positioned proximate thereto, the proximity sensor arranged to generate a button detection zone (528A) around the associated button (418,518A) and detect a presence within the button detection zone (528A). When a detection is made by the proximity sensor regarding a presence with the button detection zone (528A), the audio system controls the at least one speaker to generate an audio orientation signal comprising button (418,518A) information that is related to the associated button (418,518A) within the button detection zone (528A).