Design and evaluation of the Afari: A three-wheeled mobility and balance support device for outdoor exercise

This paper presents the design, analysis, and fabrication of a capacitive-based three-axis force sensor as the building block of a wearable sensing system to directly measure all the components of three-dimensional (3D) ground reaction forces (3D GRFs) during walking. The proposed sensor is low-cost and easy to fabricate with high accuracy, which promotes its accessibility and usability for gait analysis in clinical and research settings. The sensor is comprised of only three parallel capacitors that enable three-axial force measurement while significantly reducing the complexity of fabrication and maintenance prevalent in three-axis force sensors. Comprehensive experiments were conducted to rigorously quantify different aspects of the sensor's performance. The static and dynamic errors along the three axes are less than 2.28%, which is well within the acceptable range for the intended application. The force sensor can decouple three-axial forces with a cross-sensitivity of less than 2%. The developed sensor also demonstrates desirable repeatability and hysteresis behaviors with almost no drift over long periods of usage.

show abstract

A Low-Cost Three-Axis Force Sensor for Wearable Gait Analysis Systems

Rahman

Hejrati

2022

Journal of Medical Devices

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Design and evaluation of the Afari: A three-wheeled mobility and balance support device for outdoor exercise

Cited by 1 publication

References 25 publications

A Low-Cost Three-Axis Force Sensor for Wearable Gait Analysis Systems

A Low-Cost Three-Axis Force Sensor for Wearable Gait Analysis Systems

Contact Info

Product

Resources

About