Audio-Driven Vibration Motor Control for Custom Haptic Output
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Solution Overview
Problem
Existing vibration devices lack the ability to adjust vibrating parameters dynamically to meet the diverse preferences of modern users, providing a fixed and unsatisfying experience.
Innovation Solution
A vibration device with an audio input unit, signal processing unit, and motor control unit that adjusts vibration parameters based on audio signals or beat settings, allowing for customizable vibration experiences through low-pass filtering, modulation, and control of vibration motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If vibration devices provide preset fixed vibrating parameters, then the device structure remains simple, but the user experience lacks customization and cannot satisfy diverse preferences
Solution Approach 1:
The patent implements dynamic adjustment of vibration parameters by allowing real-time modification of amplitude and frequency based on audio signal characteristics. The control system dynamically adapts vibration parameters rather than using fixed presets, enabling the vibration device to respond adaptively to different music genres and user preferences while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent changes physical parameters of the vibration motor by adjusting amplitude and frequency based on audio signal analysis. The control unit modifies vibration parameters in real-time according to the characteristics of the input audio signal, providing customizable vibration experiences without requiring complex mechanical structures.
2Ease of operation
If vibration devices add dynamic parameter adjustment functions, then user experience improves, but the control system becomes more complex
Solution Approach 1:
The vibration device performs self-service by automatically analyzing audio signals and adjusting vibration parameters without requiring manual user input. The control unit autonomously processes the audio signal characteristics and modifies vibration parameters accordingly, improving ease of operation while avoiding the complexity of additional user interface components.
Solution Approach 2:
The system implements feedback by continuously monitoring audio signal characteristics and using this information to adjust vibration parameters in real-time. The control unit creates a closed-loop system where the vibration output responds dynamically to the input audio signal, enhancing user experience through automatic adaptation rather than manual control.
3Adaptability or versatility
If vibration devices use audio signal processing for parameter adjustment, then customization capability improves, but the signal processing requirements increase
Solution Approach 1:
The patent extracts only the essential characteristics from the audio signal that are relevant for vibration control, such as amplitude and frequency information. Rather than processing the entire audio signal in detail, the system extracts and utilizes only the necessary parameters to control the vibration motor, reducing signal processing complexity while maintaining effective customization capability.
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 dynamic adjustment of vibration parameters, providing users with a variety of customizable experiences tailored to their preferences.
Implementation Method 1
perform low-pass filtering on the audio signal to generate a filtered signal
Implementation Method 2
modulate the filtered signal according to the rated revolution of the at least one vibration motor to generate a modulated signal
Data Source
Figure 1~2
Figure 3a
Figure 3b~3c
AI summary
A vibration device includes an audio input unit, a signal processing unit, a motor control unit and at least one vibration motor, wherein the signal processing unit is connected to the audio input unit and the motor control unit and the motor control unit is connected to the at least one vibration motor. The audio input unit is configured to obtain an audio signal. The signal processing unit is configured to perform a low-pass filtering the audio signal to generate a filtered signal, perform a modulation on the filtered signal according to the rated revolution of the at least one vibration motor to generate a modulated signal, and control the at least one vibration motor through the motor control unit according to the modulated signal.