Wearable knee health rehabilitation assessment using acoustical emissions | Zendy

Caitlin N. Teague | Zendy; Sinan Hersek | Zendy; Jordan Conant | Zendy; Scott Gilliland | Zendy; Omer T. Inan | Zendy

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Wearable knee health rehabilitation assessment using acoustical emissions

Author(s) -

Caitlin N. Teague,

Sinan Hersek,

Jordan Conant,

Scott Gilliland,

Omer T. Inan

Publication year - 2017

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4974623

Subject(s) - gyroscope , accelerometer , wearable computer , microcontroller , amplifier , buzzer , computer science , noise (video) , acoustics , electrical engineering , engineering , electronic engineering , embedded system , physics , cmos , artificial intelligence , alarm , image (mathematics) , aerospace engineering , operating system

We have developed a novel, wearable sensing system based on miniature piezoelectric contact microphones for measuring the acoustical emissions from the knee during movement. The system consists of two contact microphones, positioned on the medial and lateral sides of the patella, connected to custom, analog pre-amplifier circuits and a microcontroller for digitization and data storage on a secure digital card. Tn addition to the acoustical sensing, the system includes two integrated inertial measurement sensors including accelerometer and gyroscope modalities to enable joint angle calculations; these sensors, with digital outputs, are connected directly to the same microcontroller. The system provides low noise, accurate joint acoustical emission and angle measurements in a wearable form factor and has several hours of battery life.

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