Electrooculographic Sensor Head Movement Detection

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Solution Overview

Problem

Traditional methods for identifying head movements require hardware devices like speed sensors, increasing implementation costs and complexity.

Innovation Solution

A method and device that utilize electrooculographic information to determine head movements by acquiring and analyzing eye movement data, allowing for the reuse of electrooculographic sensors integrated into devices like smart glasses to reduce costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If speed sensors or gyroscopes are disposed on the head to identify head movements, then head movement identification accuracy is improved, but implementation cost and device complexity increase

Engineering Contradiction:

Improvehead movement identification accuracyVSAvoidhardware device complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The electrooculographic sensor originally designed for eye movement detection is made to serve dual purposes: detecting eye movements and detecting head movements. By analyzing the characteristics of electrooculographic signals during head movements, the system achieves head movement identification without requiring separate dedicated sensors, thus reducing device complexity while maintaining identification accuracy

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the electrooculographic sensor's own capabilities and collected data to perform head movement detection. The sensor's existing functionality is leveraged and extended through signal analysis algorithms, eliminating the need for additional external hardware devices and reducing overall system complexity

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If speed sensors or gyroscopes are disposed on the head to identify head movements, then head movement identification capability is improved, but implementation cost increases

Engineering Contradiction:

Improvehead movement identification capabilityVSAvoidimplementation cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The electrooculographic sensor is designed to perform multiple functions: eye movement detection and head movement detection. This multi-functionality eliminates the need for separate head movement sensors, reducing hardware costs and simplifying the manufacturing process while maintaining full identification capability

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The functions of eye movement detection and head movement detection are merged into a single sensor system. By combining these detection capabilities in one integrated solution using the electrooculographic sensor, the system reduces component count and implementation cost while achieving both detection functions

Inventive Principle:

Principle #5Merging (Combining)

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 accurate identification of head movements without additional hardware, facilitating user interaction with electronic devices while minimizing implementation costs.

Implementation Method 1

acquiring, in response to a head movement performed by a user, a piece of electrooculographic information of the user

Methodology Applied

Scientific EffectElectrooculographic effect:

Data Source

PatentUS10936052B2Method and device for determining head movement according to electrooculographic information

Publication Date: 2021.03.02 BEIJING ZHIGU RUI TUO TECH

AI summary

Methods and devices for determining a head movement are provided. A method comprises: acquiring, in response to a head movement performed by a user, a piece of electrooculographic information of the user; and determining information related to the head movement according to the piece of electrooculographic information and at least one piece of reference information. The head movement can be identified according to electrooculographic information. For some devices integrated with electrooculographic sensors, the electrooculographic sensor can be reused to collect the electrooculographic information, and thereby reduce implementation costs.