Modeling Wearable Bend Sensor Behavior for Human Motion Capture
- 5 March 2014
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Sensors Journal
- Vol. 14 (7), 2307-2316
- https://doi.org/10.1109/jsen.2014.2309997
Abstract
The possibilities offered by variable resistance bend sensors, applied as wearable devices on body garments, to recover human joint bend angles for body segment movement tracking, have been investigated, underlying their advantages and drawbacks in real-time applications. Due to their pliability, sensitivity, and cheapness, they could be a valid alternative to movement analysis systems, based on optoelectronic devices or inertial electronic sensors. This paper suggests a new method for sensor characterization under fast bend and extension movements, to extract few parameters of a synthetic model, which provide to the users the chance to foresee their electrical performance in different applications. The sensor and their extracted models were applied to register the human knee rotation during a gait cycle, either at slow speed (83 deg/s) for a walking pattern at 5 km/h, and at high speed (650 deg/s) for a running pattern of a sprinter at 10 m/s, and finally the finger joint rotations at their maximum angular velocity (900 deg/s). This was done for a twofold purpose: from one hand, to assess the model capability to predict the sensor performance, tracking human body segment rotations at different speed, without the need of measurement; from the other hand, to recover in real time the actual sensor rotation from its resistance measurement, especially in high speed applications, where its response is distorted. With this technique, the mean error decreases from 22.5° to 3.7° in the worst case.Funding Information
- DCMC Project of the Italian Space Agency
This publication has 15 references indexed in Scilit:
- Wireless data glove system developed for HMIPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2010
- Mechanical modeling of bend sensors exploited to measure human joint movementsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2009
- UML model applied as a useful tool for Wireless Body Area NetworksPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2009
- The Role of Biofeedback in Stroke Rehabilitation: Past and Future DirectionsTopics in Stroke Rehabilitation, 2007
- Electroactive polymeric sensors in hand prostheses: Bending response of an ionic polymer metal compositeMedical Engineering & Physics, 2006
- Extrinsic feedback for motor learning after stroke: What is the evidence?Disability and Rehabilitation, 2006
- Polyethylenedioxythiophene coatings for humidity, temperature and strain sensing polyamide fibersSensors and Actuators B: Chemical, 2005
- Strain Sensing Fabric for Hand Posture and Gesture MonitoringIEEE Transactions on Information Technology in Biomedicine, 2005
- A model for voltage-to-displacement dynamics in piezoceramic actuators subject to dynamic-voltage excitationsIEEE/ASME Transactions on Mechatronics, 2002
- The biomechanics of runningGait & Posture, 1998