Study On The Mechanistic Of Plantar Pressure Formation Under The Influence Of Gait Pattern

In the modern society, with the rapid development of information technology, informationsecurity has been more and more people’s attention, the traditional identity authenticationalready cannot satisfy people for information security needs, biometric identificationtechnology are expected to people’s satisfaction. Commonly used biological recognitiontechnology has fingerprints, DNA, palmprint, face, iris, speech and signature, etc. However,these biological recognition technologies have the common faults that it’s the intrusiveness, andthey cannot achieve remote identification. Based on the plantar pressure distribution identity asa gait recognition of a new field, has no intrusiveness, and disguised advantages, at the sametime can realize long-distance identification, compared with the gait recognition of thecomputer vision recognition, also does not exist background interference, conditions, theinfluence of illumination, climate. So the plantar pressure recognition has an important researchsignificanceUse of plantar pressure distribution to identity is a just started direction of research, thereare many problems to be solved. Aiming at characteristics of relative stability of the plantarpressure distribution, vulnerable to external factors of interference and influence the recognitionaccuracy of plantar pressure and influence factors of the relationship between the study ofestablish the relation model. This paper main research work is as follows:The plantar pressure recognition to do relevant introduction, introduces the gaitrecognition research present situation, the plantar pressure identification used in gaitrecognition advantages as well as the wide application of plantar pressure. For foot pressure andrelated foot biomechanical model introduced the corresponding. Influence of plantar pressurelarge gait do the relevant introduction, gait parameters on plantar pressure the influence of thequalitative analysis.Then the foot of the rigid body kinematics model is established. The complex footstructure is simplified to a eight rigid body dynamics model, the use of rigid body movementbetween coordinate relationship between the analysis of the rigid body of joint relative rotation,according to the plantar soft tissue thickness change and a ground reaction force proportionalrelation, the establishment of a branch of the ground reaction force relation model, this paper reveals the gait plantar pressure dynamic change regulation.Then analyzed the gait parameters and the relationship between the plantar pressure.According to the gait velocity on the plantar pressure effect two aspects. First established thecenter of mass fluctuation and foot pressure relation model, analysis out of the center of mass toand fro and around fluctuation on the influence of plantar pressure distribution; Thenestablished the swing leg model, analysis human gait sport brought about by the inertia force ofplantar pressure brought about by the impact.According to the above the established model, analyses the plantar pressure distributionand biological characteristics, and points out that some of the plantar pressure change rule,verify the accuracy of the models, and used for subsequent recognition research.