Advertisement

Topics

A CNN-based Method for Intent Recognition Using Inertial Measurement Units and Intelligent Lower Limb Prosthesis.

08:00 EDT 9th April 2019 | BioPortfolio

Summary of "A CNN-based Method for Intent Recognition Using Inertial Measurement Units and Intelligent Lower Limb Prosthesis."

Powered intelligent lower limb prosthesis can actuate the knee and ankle joints, allowing transfemoral amputees to perform seamless transitions between locomotion states with the help of an intent recognition system. However, prior intent recognition studies often installed multiple sensors on the prosthesis, and they employed machine learning techniques to analyze time-series data with empirical features. We alternatively propose a novel method for training an intent recognition system that provides natural transitions between level walk, stair ascent / descent, and ramp ascent / descent. Since the transition between two neighboring states is driven by motion intent, we aim to explore the mapping between the motion state of a healthy leg and an amputee's motion intent before the upcoming transition of the prosthesis. We use inertial measurement units (IMUs) and put them on the healthy leg of lower limb amputees for monitoring its locomotion state. We analyze IMU data within the early swing phase of the healthy leg, and feed data into a convolutional neural network (CNN) to learn the feature mapping without expert participation. The proposed method can predict the motion intent of both unilateral amputees and the able-bodied, and help to adaptively calibrate the control strategy for actuating powered intelligent prosthesis in advance. Experimental results show that the recognition accuracy can reach a high level (94.15 % for the able-bodied, 89.23 % for amputees) on 13 classes of motion intent, containing 5 steady states on different terrains as well as 8 transitional states among the steady states.

Affiliation

Journal Details

This article was published in the following journal.

Name: IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society
ISSN: 1558-0210
Pages:

Links

DeepDyve research library

PubMed Articles [25601 Associated PubMed Articles listed on BioPortfolio]

Kinematics and shock attenuation during a prolonged run on the athletic track as measured with inertial magnetic measurement units.

Tibial stress fractures are common running related injury and their etiology may include biomechanical factors like impact forces, shock attenuation, lower limb kinematics and how these factors are in...

The value of tibial mounted inertial measurement units to quantify running kinetics in elite football (soccer) players. A reliability and agreement study using a research orientated and a clinically orientated system.

In elite football, measurement of running kinetics with inertial measurement units (IMUs) may be useful as a component of periodic health examination (PHE). This study determined the reliability of, a...

An Unsupervised Learning Technique to Optimize Radio Maps for Indoor Localization.

A major burden of signal strength-based fingerprinting for indoor positioning is the generation and maintenance of a radio map, also known as a fingerprint database. Model-based radio maps are generat...

Effects on balance skills and patient compliance of biofeedback training with inertial measurement units and exergaming in subacute stroke: a pilot randomized controlled trial.

Stroke patients have reduced balance and postural control that limits their activities of daily living and participation in social life. Recently, many exergaming systems based on video-biofeedback ha...

Assessing Shoulder Biomechanics of Healthy Elderly Individuals During Activities of Daily Living Using Inertial Measurement Units: High Maximum Elevation Is Achievable but Rarely Used.

Current shoulder clinical range of motion (ROM) assessments (e.g., goniometric ROM) may not adequately represent shoulder function beyond controlled clinical settings. Relative inertial measurement un...

Clinical Trials [8355 Associated Clinical Trials listed on BioPortfolio]

The Effect of Digital Rehabilitation System With Wearable Multi-IMU (Inertial Measurement Unit) Sensors on Upper Limb Functions in Children With Cerebral Palsy

This study was designed to establish the clinical evidence for effect of video-game based rehabilitation therapy system using IMU sensors as a game interface, newly-developed in Korea, on ...

Changes in Oxygen Saturation in Two Exercise Modalities

The investigator will proceed to assess changes in oxygenation of muscle tissue, electromyographic activation and strength in healthy subjects. For this, a measurement of all demographic v...

Metrological Characteristics of the Inertial Unit "FOX HiKoB©" in Comparison With the Reference System for the Adaptive Trigger System "Functional Electrical Stimulation" of Foot Elevators in Hemiplegic Post-stroke Patients

The main objective of this study is to evaluate the metrological characteristics of the data processing algorithms from inertial sensors (FOX © HiKoB) for the reconstruction of movement r...

Evaluation of Position-induced Cyclorotation Between Wavefront Measurement and Refractive Surgery by the Iris Registration Method

Cyclorotation of eyes may be affected by motion and orientation of the head and body. An automated alignment method with the technique of iris recognition was used to assess the amount and...

Comparing PPG-based Blood Pressure Measurement to the Gold Standard Manometer

Continuous blood pressure (BP) measurement is in use today with an ambulatory, sphygmomanometer-based, device. This device, also called BP Holter, gives essential data for the clinician, a...

Medical and Biotech [MESH] Definitions

A method of differentiating individuals based on the analysis of qualitative or quantitative biological traits or patterns. This process which has applications in forensics and identity theft prevention includes DNA profiles or DNA fingerprints, hand fingerprints, automated facial recognition, iris scan, hand geometry, retinal scan, vascular patterns, automated voice pattern recognition, and ultrasound of fingers.

A method of non-invasive, continuous measurement of MICROCIRCULATION. The technique is based on the values of the DOPPLER EFFECT of low-power laser light scattered randomly by static structures and moving tissue particulates.

Fluoroimmunoassay where detection of the hapten-antibody reaction is based on measurement of the increased polarization of fluorescence-labeled hapten when it is combined with antibody. The assay is very useful for the measurement of small haptenic antigens such as drugs at low concentrations.

A computer architecture, implementable in either hardware or software, modeled after biological neural networks. Like the biological system in which the processing capability is a result of the interconnection strengths between arrays of nonlinear processing nodes, computerized neural networks, often called perceptrons or multilayer connectionist models, consist of neuron-like units. A homogeneous group of units makes up a layer. These networks are good at pattern recognition. They are adaptive, performing tasks by example, and thus are better for decision-making than are linear learning machines or cluster analysis. They do not require explicit programming.

An azo dye used in blood volume and cardiac output measurement by the dye dilution method. It is very soluble, strongly bound to plasma albumin, and disappears very slowly.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Arthroplasty
Arthroplasty is a surgical procedure to restore the integrity and function of a joint. A joint can be restored by resurfacing the bones. An artificial joint (called a prosthesis) may also be used. Various types of arthritis may affect the joints. Osteo...

Joint Disorders
A joint is where two or more bones come together, like the knee, hip, elbow, or shoulder. Joints can be damaged by many types of injuries or diseases, including Arthritis - inflammation of a joint causes pain, stiffness, and swelling with ...


Searches Linking to this Article