User’s static and dynamic posture determination method using smartphone acceleration sensor



In this paper, we propose algorithm for determining the static and dynamic posture using the acceleration sensor of smartphone. The measured acceleration values are then analyzed according to a preprocessing to the respective axis (X, Y, Z) and posture (standing, sitting, lying) presents static posture determination criterion. The proposed static posture determination condition is used for static posture determination and dynamic posture determination. The dynamic posture is determined by using regression linear equations. In addition, transition state can be grasped by SVM change in dynamic posture determination. Experimental results are presented using data and app. Experiments were performed using data collected from 10 adults.


 1. Introduction
 2. Preprocessing
  2.1. Measuring devices
  2.2. Participants
  2.3. Preprocessing course
 3. Main subject
  3.1. Static posture determination
  3.2. Dynamic posture determination: “Standing-Sitting-Standing”
  3.3. Dynamic posture determination: “Standing-Sitting-Lying-Sitting-Standing”
 4. Posture determination algorithm and experimental results
  4.1. Static posture determination algorithm
  4.2. Dynamic posture determination algorithm
  4.3. Acceleration data experimental results
 5. App Development
  5.1. App design
  5.2. App Algorithm
  5.3. App experiment results
 6. Conclusion


  • Seok-Woo Lee Department of Information System Kwangwoon University GraduateSchool of Information Contents
  • Jong-Yong Lee Ingenium College of liberal arts, Kwangwoon University
  • Kye-Dong Jung Ingenium College of liberal arts, Kwangwoon University


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