This paper presents a methodology to assess heartrelated parameters (such as heart rate and heart rate variability) from SeismoCardioGram (SCG) signals acquired with an Inertial Measurement Unit (IMU). Specific SCG landmarks are detected and identified, including Aortic valve Opening (AO) and Isovolumetric Moment (IM) phases. In order to improve detection accuracy and robustness, information from all 3 accelerometer's axes are combined. Preliminary results are promising, highlighting good overall linearity (r 2 > 0.965) with respect to reference ECG-based (ElectroCardioGram) measurements. By considering all 3 accelerometer axes, performance improves over single-axis approaches. Results suggest the feasibility of accurate, continuous measurements of heart rate and its variability (in restconditions) in AAL scenarios, where such information may effectively complement physical activity and activity intensity data.
Accurate annotation of SeismoCardioGram exploiting multi-dimensional accelerometry / Mora, N.; Cocconcelli, Federico; Matrella, G.; Ciampolini, P.. - ELETTRONICO. - (2019), pp. 169-173. (Intervento presentato al convegno 10th Computer Science and Electronic Engineering Conference, CEEC 2018 tenutosi a University of Essex, gbr nel 2018) [10.1109/CEEC.2018.8674235].
Accurate annotation of SeismoCardioGram exploiting multi-dimensional accelerometry
Mora N.
;COCCONCELLI, FEDERICO;Matrella G.;Ciampolini P.
2019-01-01
Abstract
This paper presents a methodology to assess heartrelated parameters (such as heart rate and heart rate variability) from SeismoCardioGram (SCG) signals acquired with an Inertial Measurement Unit (IMU). Specific SCG landmarks are detected and identified, including Aortic valve Opening (AO) and Isovolumetric Moment (IM) phases. In order to improve detection accuracy and robustness, information from all 3 accelerometer's axes are combined. Preliminary results are promising, highlighting good overall linearity (r 2 > 0.965) with respect to reference ECG-based (ElectroCardioGram) measurements. By considering all 3 accelerometer axes, performance improves over single-axis approaches. Results suggest the feasibility of accurate, continuous measurements of heart rate and its variability (in restconditions) in AAL scenarios, where such information may effectively complement physical activity and activity intensity data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
