Thermally Actuated Memory-Alloy Control Points for Tactile Feedback
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Solution Overview
Problem
Existing human-computer interaction technologies primarily rely on vision and hearing for information transmission, neglecting the potential of touch as a sensory modality for information perception and transmission.
Innovation Solution
A sensing apparatus utilizing a control point matrix with memory alloy layers and elastic layers that deform and protrude based on temperature changes, enabling vibration feedback for information transmission through touch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If vision and hearing are used for information transmission, then information can be transmitted effectively, but the richness of information transmission methods is limited
Solution Approach 1:
The patent introduces a new dimension for information transmission by utilizing the tactile sense (touch) in addition to vision and hearing. The control point matrix creates three-dimensional protrusions that can be felt through skin contact, adding a spatial tactile dimension to information transmission. This allows blind or visually impaired users to perceive information through touch, thereby enriching the overall information transmission methods without losing information for any user group.
Solution Approach 2:
The sensing apparatus provides multi-functional information transmission capabilities by supporting multiple sensory modalities. The same control point matrix can transmit information through visual display, auditory output, and tactile feedback simultaneously or independently, making the system universally accessible to different user needs and enhancing the versatility of information transmission methods.
2Adaptability or versatility
If memory alloy layers are used to create tactile feedback, then three-dimensional information transmission is enabled, but device complexity increases
Solution Approach 1:
The patent utilizes temperature as a controllable parameter to drive the memory alloy layers. By changing the temperature of the memory alloy layers through heating elements, the control points protrude or retract, creating tactile feedback. This parameter-based control method enables three-dimensional information transmission while maintaining relatively simple device structure, as temperature control can be achieved through straightforward electrical heating without complex mechanical mechanisms.
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 three-dimensional information transmission and enhances the richness of information transmission methods by allowing users to perceive and interact with data through tactile feedback without relying on vision or hearing.
Implementation Method 1
The memory alloy layer can be bent and deformed when a temperature rises, and the elastic layer is configured to drive the deformed memory alloy layer to recover an original shape
Implementation Method 2
the elastic layer is configured to drive the deformed memory alloy layer to recover an original shape
Implementation Method 3
a current can flow through the memory alloy layer, to adjust the temperature of the memory alloy layer to enable the temperature of the memory alloy layer to fluctuate above and below the specified threshold
Data Source
AI summary
This application discloses a sensing apparatus, an electronic device, and a control method for the electronic device. The sensing apparatus includes a circuit board and a plurality of control points fixed to the circuit board, and each of the plurality of control points is located at a different position on the circuit board. Each control point includes memory alloy layers and elastic layers that are superposed and fixed in a one-to-one correspondence. When temperatures of all the memory alloy layers are lower than a specified threshold, all the memory alloy layers are located in a first plane. When a temperature of a specified memory alloy layer is higher than the specified threshold, the specified memory alloy layer is bent and deformed. Each memory alloy layer is connected to two electrodes for connecting the memory alloy layer to a circuit.