Wireless Gait Recognition Using Channel Information

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Solution Overview

Problem

Conventional gait recognition systems are not robust enough to environmental changes and require significant user cooperation and calibration, making them impractical for ubiquitous and reliable human recognition applications.

Innovation Solution

A wireless human recognition system that processes time series of channel information (CI) to detect the presence and extract gait features of individuals, allowing for identity recognition without the need for active user cooperation or extensive calibration, using a transmitter and receiver to capture and analyze wireless channel information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional gait recognition systems are used, then gait features can be extracted, but the systems are not robust to environmental changes and require significant user cooperation and calibration

Engineering Contradiction:
Improverobustness to environmental changesVSAvoiduser cooperation and calibration requirements
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system performs automatic calibration and adaptation without requiring user cooperation. The deep learning model automatically learns gait features from wireless channel information during normal operation, eliminating the need for manual calibration procedures and user intervention while maintaining robustness across different environments

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system uses deep learning models to dynamically adapt feature extraction parameters based on environmental conditions. The model automatically adjusts its internal parameters to maintain consistent gait recognition performance across varying environmental conditions, eliminating the need for manual recalibration

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If conventional gait recognition systems are used, then recognition can be performed, but extensive calibration is required making them impractical for ubiquitous applications

Engineering Contradiction:
Improveubiquitous application capabilityVSAvoidcalibration process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The deep learning model performs self-calibration by automatically learning gait characteristics from wireless channel data during normal operation. This eliminates the need for complex manual calibration procedures and enables ubiquitous deployment without requiring extensive setup time or user involvement

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs preliminary learning of gait features during the initial deployment phase without requiring formal calibration procedures. The deep learning model automatically adapts to the specific environment and extracts meaningful gait patterns, preparing the system for immediate use across different scenarios

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If wireless channel information is processed for gait recognition, then accurate human recognition can be achieved, but the system complexity increases

Engineering Contradiction:
Improverecognition accuracyVSAvoidsignal processing complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system replaces complex traditional signal processing pipelines with a deep learning-based approach. The neural network automatically learns optimal feature representations from raw wireless channel information, eliminating the need for manual feature engineering and complex processing stages while achieving high recognition accuracy

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The deep learning model serves multiple functions simultaneously: it performs feature extraction, classification, and adaptation to environmental changes. This multi-functional approach consolidates what would otherwise require multiple separate processing stages into a single unified model, reducing overall system complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The system provides accurate and reliable human recognition that is robust to environmental changes, enhancing the usability and effectiveness of gait recognition in smart spaces without requiring extensive user interaction or recalibration.

Implementation Method 1

a transmitter configured to transmit a first wireless signal through a wireless channel of a venue; a receiver configured to receive a second wireless signal through the wireless channel, wherein the second wireless signal comprises a reflection of the first wireless signal by at least one object in the venue

Methodology Applied
Scientific EffectElectromagnetic wave propagation and reflection: Reflection

Data Source

PatentUS11448727B2Method, apparatus, and system for human recognition based on gait features
Publication Date: 2022.09.20 ORIGIN RES WIRELESS INC
  • US11448727B2 patent drawing
  • US11448727B2 patent drawing
  • US11448727B2 patent drawing

AI summary

Methods, apparatus and systems for human recognition based on one or more gait features detected wirelessly are described. In one example, a described system comprises: a transmitter configured to transmit a first wireless signal through a wireless channel of a venue; a receiver configured to receive a second wireless signal through the wireless channel, wherein the second wireless signal comprises a reflection of the first wireless signal by at least one object in the venue; and a processor. The processor is configured for: obtaining a time series of channel information (CI) of the wireless channel based on the second wireless signal, determining a presence of a person moving in the venue based on the time series of CI (TSCI), extracting at least one gait feature of the person from the TSCI, and recognizing an identity of the person based on the at least one gait feature.