Holographic Elevator Call Interface for Contactless Button Input
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Solution Overview
Problem
Elevator buttons in public spaces are breeding grounds for bacteria and germs, leading to cross-infection as users must physically interact with them, highlighting the need for a non-contact solution, especially during pandemics.
Innovation Solution
A holographic external call device for elevators featuring a device housing with a gesture sensor and optical module that generates images in the air, allowing users to interact with these images without physical contact, sending signals to the elevator control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If physical buttons are used for elevator external call, then the calling function is realized, but cross-infection occurs due to direct physical contact with bacteria and germs on the buttons
Solution Approach 1:
The patent replaces the mechanical button pressing system with an optical-holographic system. The holographic display projects virtual images in the air that respond to hand gestures, eliminating the need for physical contact with buttons. The gesture recognition system detects hand movements and translates them into elevator call signals, substituting mechanical interaction with optical and computational processes.
Solution Approach 2:
The patent introduces a holographic image as an intermediary between the user and the elevator control system. Instead of directly pressing physical buttons, users interact with virtual holographic images that float in the air. This intermediary layer maintains the calling function while eliminating direct contact with potentially contaminated surfaces.
2Ease of operation
If holographic display is used for external call, then contactless interaction is achieved, but device complexity increases due to additional components like optical modules and gesture sensors
Solution Approach 1:
The patent integrates multiple functions into a single device housing: the optical module serves both to project holographic images and to receive gesture input, the gesture sensor simultaneously detects hand movements and triggers control signals, and the display screen functions as both information output and interaction interface. This multi-functionality reduces the need for separate components and simplifies the overall device structure.
Solution Approach 2:
The patent combines the projection function and gesture recognition function into an integrated optical module within the device housing. The holographic display and gesture sensor work together as a unified system, with the optical components serving dual purposes for both output (hologram projection) and input (gesture detection). This merging of functions reduces device complexity compared to having separate systems.
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
Enables contactless interaction with elevators, reducing the risk of cross-infection by eliminating direct physical contact with potentially germ-infested buttons while maintaining functionality.
Implementation Method 1
a screen produces an image after power on, which affects the light reconstruction in the optical module to generate an image in the air
Implementation Method 2
the gesture sensor in the device will sense the gesture and send the command to the main board
Data Source
AI summary
A holographic external call device for an elevator, which includes a device shell. One side of the device shell is provided with a sensor mounting hole, and a gesture sensor is installed in the sensor mounting hole. An optical module is installed, one side of the optical module is provided with two screen installation grooves, the two screen installation grooves are both installed with a screen, and the bottom side of the optical module is provided with a main board. The screen produces an image after power on, which affects the light reconstruction in the optical module to generate an image in the air, and then the finger clicks on the image in the air. The gesture sensor will sense the gesture and send the command for the main board, addressing cross-contact infection problem caused by using the elevator outbound button to call the elevator without actual physical contact.