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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/28451

Title: Detection of (In)activity Periods in Human Body Motion Using Inertial Sensors: A Comparative Study
Authors: Olivares, Alberto
Ramírez Pérez de Inestrosa, Javier
Olivares Ruiz, Gonzalo
Damas Hermoso, Miguel
Issue Date: 2012
Abstract: Determination of (in)activity periods when monitoring human body motion is a mandatory preprocessing step in all human inertial navigation and position analysis applications. Distinction of (in)activity needs to be established in order to allow the system to recompute the calibration parameters of the inertial sensors as well as the Zero Velocity Updates (ZUPT) of inertial navigation. The periodical recomputation of these parameters allows the application to maintain a constant degree of precision. This work presents a comparative study among different well known inertial magnitude-based detectors and proposes a new approach by applying spectrum-based detectors and memory-based detectors. A robust statistical comparison is carried out by the use of an accelerometer and angular rate signal synthesizer that mimics the output of accelerometers and gyroscopes when subjects are performing basic activities of daily life. Theoretical results are verified by testing the algorithms over signals gathered using an Inertial Measurement Unit (IMU). Detection accuracy rates of up to 97% are achieved.
Sponsorship: This work was partly supported by the MICINN under the TEC2008-02113/TEC project and the Consejería de Innovación, Ciencia y Empresa (Junta de Andalucía, Spain) under the Excellence Projects P07-TIC-02566, P09-TIC-4530 and P11-TIC-7103.
Publisher: MDPI
Description: This article belongs to the Special Issue Select papers from UCAmI 2011 - the 5th International Symposium on Ubiquitous Computing and Ambient Intelligence (UCAmI'11)
Keywords: Activity detection
Inertial sensors
Human body monitoring
Activity recognition
URI: http://hdl.handle.net/10481/28451
ISSN: 1424-8220
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Olivares, A.; et al. Detection of (In)activity Periods in Human Body Motion Using Inertial Sensors: A Comparative Study. Sensors, 12(5): 5791-5814 (2012). [http://hdl.handle.net/10481/28451]
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