Study of Zero Velocity Update for Both Low- and High-Speed Human Activities

R. Zhang, M. Loschonsky and L.M. Reindl
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R. Zhang: University of Freiburg, Germany
M. Loschonsky: University of Freiburg, Germany
L.M. Reindl: University of Freiburg, Germany

International Journal of E-Health and Medical Communications (IJEHMC), 2011, vol. 2, issue 2, 46-67

Abstract: Previous studies show that inertial sensor-based personal positioning benefited from Zero Velocity Update (ZUPT) method by resetting the foot speed at every foot step. However, only the solution for normal pedestrian movement with small velocity like walking was given. This paper presents a novel ZUPT system which can be used in a wide range of human activities, including walking, running, and stair climbing by using two inertial measurement unit (IMU) modules. One is attached on the centre of the human body for human activities’ classification and recognition. The other one is mounted on the foot for ZUPT algorithm implementation based on the result of activities’ recognition. Test cases include stair climbing by walking and running, walking, fast walking, and running. In all cases, most of the steps are able to be detected and the new ZUPT system can be successfully implemented.

Date: 2011
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