EMG Gesture Terminal Control via Wavelet Decomposition

Solution Overview

Problem

Conventional remote controllers for intelligent terminals like TVs and air conditioners are bulky due to multiple buttons, making them inconvenient to carry and use.

Innovation Solution

A terminal control method using electromyographic signals detected by a signal detecting device, which obtains characteristic values through wavelet decomposition and matches them with preset values to determine control codes, allowing gesture-based control without mechanical buttons.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple buttons are used in the remote controller to control various terminal functions, then the control functionality and versatility are improved, but the size of the remote controller increases and portability deteriorates

Engineering Contradiction:

Improvecontrol functionalityVSAvoidremote controller size

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent replaces the mechanical button system with an electromyographic signal detection system. Instead of using physical buttons to input control commands, the system detects muscle electrical signals from the user's hand gestures to recognize and execute control operations. This substitution eliminates the need for multiple physical buttons while maintaining comprehensive control functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses wavelet decomposition to extract characteristic values from electromyographic signals, creating a digital representation of hand gestures. These characteristic values serve as a copy or signature of the original muscle signals, enabling accurate gesture recognition and control command generation without requiring physical buttons.

Inventive Principle:

Principle #26Copying

2Ease of operation

If multiple buttons are included in the remote controller to cover all control functions, then the ease of operation for different functions is improved, but the portability and convenience of carrying deteriorates

Engineering Contradiction:

Improvecontrol convenienceVSAvoidremote controller size

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The patent substitutes the mechanical button interface with a physiological signal-based interface. By detecting electromyographic signals from hand gestures, the system provides an alternative control method that maintains operational convenience while eliminating the bulk associated with multiple physical buttons.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent transforms the control interface from spatial (physical button positions) to physiological (electromyographic signal characteristics). By changing the parameter space from mechanical button presses to electrical signal detection, the system achieves comprehensive control functionality without increasing physical size.

Inventive Principle:

Principle #35Parameter changes

3Volume of moving object

If a compact remote controller design is used to improve portability, then the volume and weight are reduced, but the control functionality and number of available buttons deteriorates

Engineering Contradiction:

Improveremote controller sizeVSAvoidcontrol functionality

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent replaces the mechanical button system with an electromyographic signal detection system. Instead of using physical buttons to input control commands, the system detects muscle electrical signals from the user's hand gestures to recognize and execute control operations. This substitution eliminates the need for multiple physical buttons while maintaining comprehensive control functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates a universal control interface that can perform multiple control functions through a single gesture recognition system. The electromyographic detection system serves as a multi-functional input device, replacing numerous specialized buttons with a unified gesture-based control mechanism that can execute various terminal operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If traditional button-based remote control is used, then the reliability of control input is improved, but the device complexity and number of components increases

Engineering Contradiction:

Improvecontrol input reliabilityVSAvoidremote controller structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical button system with an electromyographic signal detection system. Instead of using physical buttons to input control commands, the system detects muscle electrical signals from the user's hand gestures to recognize and execute control operations. This substitution eliminates the need for multiple physical buttons while maintaining comprehensive control functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 portable and flexible control of terminals by eliminating the need for multiple buttons, allowing users to control devices through gestures detected by electromyographic signals, reducing device size and improving usability.

Implementation Method 1

When a hand gesture is performed by a user, an electromyographic signal detecting device detects an electromyographic signal

Methodology Applied

Scientific EffectElectromyographic signal:

Implementation Method 2

the terminal obtains a characteristic value of the electromyographic signal, the characteristic value is an average value or a variance of wavelet coefficients obtained by performing wavelet decomposition of the electromyographic signal

Methodology Applied

Scientific EffectWavelet decomposition:

Data Source

PatentEP3187967B1Terminal control method and system

Publication Date: 2019.02.13 SHENZHEN TCL NEW-TECH CO LTD

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AI summary

The preset disclosure provides a terminal control method including following steps. A characteristic value of an electromyographic signal is obtained when the electromyographic signal is detected by an electromyographic signal detecting device. The characteristic value is an average value and/or a variance of a wavelet coefficient obtained by performing wavelet decomposition of the electromyographic signal. A mapping relationship between preset characteristic values and control codes is searched to determine whether there is a preset characteristic value which can match the obtained characteristic value, and a control code corresponding to the matching preset characteristic value is determined if there is a matching preset characteristic value. A control signal is responded corresponding to the determined control code. The present disclosure further provides a terminal control system. The electromyographic signal detecting device has no need to employ multiple unnecessary mechanical buttons, but can send the electromyographic signal based on the gesture of the use, thereby decreasing the size thereof and making it portable and flexible to be controlled.