A telemetry system is described and a package of computer programs allowing the determination of the torso acceleration in cross country skiing. The acceleration components are given by two accelerometers mounted in quasibaricentric position in the antero-posterior vertical plane. One of the accelerometers measures also the gravity component, thus allowing the determination of the mean torso inclination. The signals from the two accelerometers are fed to a PCM telemetry system and recorded on analog tape after decoding at the receiving station. The package of Fortran programs allows: 1) AD conversion at 100 Hz to avoid aliasing in the useful spectral range, limited to 20 Hz; 2) calibration and automatic reduction of the noise due to transmission synchronization losses; 3) averaging, computation of the mean torso inclination and reconstruction of the vertical and horizontal acceleration components; 4) integration of the acceleration components to give speed and displacement components and thus potential and kinetic energy variations. A synchronization signal allows the comparison of the acceleration with the cinematographic analysis of the movement.

Telemetry and computer processing of accelerometric data in cross country skiing / M. Gussoni, F. Celentano, E. Mazzoletti. - In: IRCS MEDICAL SCIENCE. - ISSN 0305-6686. - 10:12(1982), pp. 1013-1014.

Telemetry and computer processing of accelerometric data in cross country skiing

M. Gussoni
Primo
;
1982

Abstract

A telemetry system is described and a package of computer programs allowing the determination of the torso acceleration in cross country skiing. The acceleration components are given by two accelerometers mounted in quasibaricentric position in the antero-posterior vertical plane. One of the accelerometers measures also the gravity component, thus allowing the determination of the mean torso inclination. The signals from the two accelerometers are fed to a PCM telemetry system and recorded on analog tape after decoding at the receiving station. The package of Fortran programs allows: 1) AD conversion at 100 Hz to avoid aliasing in the useful spectral range, limited to 20 Hz; 2) calibration and automatic reduction of the noise due to transmission synchronization losses; 3) averaging, computation of the mean torso inclination and reconstruction of the vertical and horizontal acceleration components; 4) integration of the acceleration components to give speed and displacement components and thus potential and kinetic energy variations. A synchronization signal allows the comparison of the acceleration with the cinematographic analysis of the movement.
Settore BIO/09 - Fisiologia
1982
Article (author)
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/210343
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact