Smart Watch Vibration Input via Wrist Gestures
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Solution Overview
Problem
Smart watches lack effective interactive input methods due to their small screen size, with existing solutions like single-touch screens and speech recognition being limited, and additional equipment required for finger tracking being costly and not widely accepted.
Innovation Solution
An interactive method and system using vibration signals from a human body, acquired by a smart watch's accelerometer and gyroscope, processed through an anomaly detection algorithm and an improved k-nearest neighbor algorithm for classification and identification, allowing for stable and accurate user feedback correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a smart watch uses a small screen, then the device can be worn on the wrist, but the user cannot input words effectively
Solution Approach 1:
The patent uses vibration signals as an intermediary between the user and the smart watch interface. The accelerometer and gyroscope detect vibrations from the user's wrist, serving as a mediator that translates physical gestures into digital inputs without requiring a large screen
Solution Approach 2:
The patent replaces the traditional mechanical touchscreen interaction system with a vibration-based detection system. Instead of requiring direct contact with the screen, the system uses the accelerometer and gyroscope to detect mechanical vibrations transmitted through the wrist, substituting the mechanical screen interface with an inertial sensing system
2Ease of operation
If speech recognition is used for input, then text input is enabled, but information sensitivity is limited
Solution Approach 1:
The patent changes the detection parameter from acoustic signals (speech) to mechanical vibration signals. By detecting the frequency, amplitude, and pattern of wrist vibrations, the system can distinguish between different input gestures with higher precision, reducing information loss compared to speech recognition
3Ease of operation
If additional equipment is added for finger tracking, then input capability is improved, but cost increases
Solution Approach 1:
The patent makes the accelerometer and gyroscope serve multiple functions: they are used for both motion tracking and vibration-based input detection. This multi-functionality eliminates the need for additional specialized equipment, maintaining input capability while avoiding increased device complexity and cost
Solution Approach 2:
The patent enables the smart watch to use its own existing sensors (accelerometer and gyroscope) for input detection without requiring external or additional equipment. The device serves itself by leveraging components already present in the system, avoiding the need for costly add-on devices
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
This approach expands interactive capabilities of smart watches by utilizing the human body as a virtual screen, enhancing user experience and enabling text input and gaming applications without the need for additional equipment.
Implementation Method 1
acquiring a vibration signal of an accelerometer and a gyroscope of a smart watch based on a vibration signal transmitted by a human body
Data Source
AI summary
An interactive method of a smart watch includes the following steps: S1. acquiring a vibration signal of an accelerometer and a gyroscope of a smart watch based on a vibration signal transmitted by a human body; S2. identifying the vibration signal by using an anomaly detection algorithm; S3. pre-processing the vibration signal, and further classifying and identifying the vibration signal by using an improved algorithm of a k-nearest neighbor algorithm; S4. analyzing the user's feedback on the results and correcting them in time to maintain a stable identification accuracy. The present disclosure also discloses an interactive system, including a signal detection module, an identification and classification module, and a real-time feedback module. In the present disclosure, the human body part is regarded as a virtual screen based on the vibration signal transmitted by the human body.