Piezoelectric Tactile Transmission for Remote Haptic Feedback
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Solution Overview
Problem
Conventional tactile sense transmission devices present tactile sensations only at the point of contact, lacking the ability to transmit tactile sensations to remote positions with high responsiveness.
Innovation Solution
A tactile sense transmission device utilizing a piezoelectric sensor and vibrator, both configured with piezoelectric elements, to relay and output tactile sensations remotely, with a relay unit amplifying the signal for clearer presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional capacitive sensor and piezoelectric actuator are used to present tactile sense at the contact point, then the tactile feedback is localized and simple, but the ability to transmit tactile sense to remote positions is limited
Solution Approach 1:
The patent creates a copy of the tactile sensation by converting the mechanical pressing force into an electrical signal, transmitting it, and then reconstructing the vibration at a remote position. The piezoelectric sensor captures the tactile input and generates an electrical signal that is sent to a piezoelectric actuator, which reproduces the vibration pattern at a different location, effectively copying the tactile experience remotely.
Solution Approach 2:
The patent replaces direct mechanical coupling with electrical signal transmission. Instead of mechanically connecting the sensor and actuator, the system uses electrical signals to transmit the tactile information. The piezoelectric elements convert mechanical energy to electrical energy and back, substituting the mechanical transmission path with an electrical one, enabling remote transmission while maintaining responsiveness.
2Adaptability or versatility
If the tactile sense is transmitted over a network via audio signal conversion, then the transmission distance is extended, but the responsiveness may be reduced due to conversion and restoration processes
Solution Approach 1:
The patent changes the parameter domain of the tactile signal by converting it from a mechanical vibration pattern to an electrical signal, and optionally to an audio signal for network transmission. This parameter transformation allows the tactile information to be transmitted through different media (wired connection or network) while maintaining the essential characteristics of the original tactile sensation. The electrical signal can be processed and transmitted without the physical constraints of direct mechanical coupling.
3Measurement precision
If multiple piezoelectric sensors with different operating frequencies are used, then the tactile detail detection is improved, but the device complexity increases
Solution Approach 1:
The patent segments the tactile detection function by using multiple piezoelectric sensors with different operating frequencies. Each sensor is responsible for detecting specific frequency components of the tactile input, allowing the system to capture a broader range of tactile details. By dividing the detection task across multiple specialized sensors, the system achieves high measurement precision for different types of surface irregularities and vibration patterns.
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 high responsiveness and clear tactile sensation transmission to remote locations, capable of detecting and presenting minute surface details with optimized frequency bands.
Implementation Method 1
an input unit configured to generate a voltage according to a pressing force generated by contact and generate a signal based on the generated voltage; the input unit is configured by a piezoelectric sensor including a piezoelectric element
Implementation Method 2
an output unit configured to output vibration based on the signal relayed by the relay unit; the output unit is configured by a vibrator including a piezoelectric element and vibrating based on the signal
Data Source
AI summary
A tactile sense transmission device includes an input unit configured to generate a voltage according to a pressing force generated by contact and generate a signal based on the generated voltage; a relay unit configured to relay the signal from the input unit and adjust a value of the signal; and an output unit configured to output vibration based on the signal relayed by the relay unit. The input unit is configured by a piezoelectric sensor including a piezoelectric element, and the output unit is configured by a vibrator including a piezoelectric element and vibrating based on the signal.