Research On Fall Protection Strategies Based On The Detection Of3D Plantar Pressure

There is a close relationship between plantar pressure and thebody center gravity trajectory. The body center gravity trajectory couldaffect the body’s stability during walking. So, it’s very important to studyplantar pressure to gain The centre of gravity of human body.The subject’s Research not only improve the theory of dynamicmonitoring body center of gravity trajectory, but also achieve the staticand dynamic detection of three-dimensional plantar pressure through theresearch of new sensors. It can be better achieved to simple, rapid andaccurate detection of the body center of gravity trajectory through thestudy of plantar pressure during the gait, to judge and analysis theuncertainties caused by the fall of the walking process.Firstly, through the analysis of plantar pressure monitoring system, tounderstand it’s internal structure and working principle. Secondly,according to the characteristics of the gait plantar pressure distribution bymeasuring the force platform and the foot’s bone structure，make the sensor is located in a more rational distribution of the plantar pressuremonitoring system. Once again, through studying and analysis theforming three-dimensional force sensor, let us have a new design modelof loading sensing unit and simulate calculation in FEM. The loadsensing unit is used to designing and assembling the three-dimensionalpressure sensor. Then get the algorithm of body center of gravitytrajectory when the human is walking through the gait simulation,provides the basis for the drop resistance strategy. While introduction hasbeen developed in a very mature theory-Zero Moment Point (ZMP) forjudging about the stability of the humanoid robot, so that it is also used asthe basis of human’s drop resistance strategy. Obtained the human centrallocus at the time of the fall by fell simulations, provides the support of thealgorithm about the body center of gravity trajectory. Finally, given thetext of the work summarized and explained the inadequacies of the work,lay the foundation for future study.