Development of a Wireless Inertial Measurement System for Pitching Motion Analysis

Kitamura, Seiji; Sagawa, Koichi; Tsukamoto, Toshiaki; Ishibashi, Yasuyuki

doi:10.4028/www.scientific.net/aef.2-3.452

Cited by 4 publications

References 3 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

Measurement of three-dimensional posture and trajectory of lower body during standing long jumping utilizing body-mounted sensors

Ibata

Kitamura

Motoi

et al. 2013

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

View full text Add to dashboard Cite

The measurement method of three-dimensional posture and flying trajectory of lower body during jumping motion using body-mounted wireless inertial measurement units (WIMU) is introduced. The WIMU is composed of three-dimensional (3D) accelerometer and gyroscope of two kinds with different dynamic range and one 3D geomagnetic sensor to adapt to quick movement. Three WIMUs are mounted under the chest, right thigh and right shank. Thin film pressure sensors are connected to the shank WIMU and are installed under right heel and tiptoe to distinguish the state of the body motion between grounding and jumping. Initial and final postures of trunk, thigh and shank at standing-still are obtained using gravitational acceleration and geomagnetism. The posture of body is determined using the 3D direction of each segment updated by the numerical integration of angular velocity. Flying motion is detected from pressure sensors and 3D flying trajectory is derived by the double integration of trunk acceleration applying the 3D velocity of trunk at takeoff. Standing long jump experiments are performed and experimental results show that the joint angle and flying trajectory agree with the actual motion measured by the optical motion capture system.

show abstract