INFORMATION-MEASUREMENT SYSTEM FOR RESEARCH OF KINEMATICS OF MOVEMENTS OF THE LOWER LIMBS OF THE PERSON AND WIRELESS DATA TRANSFER
A.V. Tsareva, A.Y. Kurochkin, V.V.Alekseev
Currently, in medical rehabilitation there are no mobile measuring instruments with software and algorithmic software necessary to control the recovery of the patient in the postoperative period. The existing video systems of motion kinematics control have a high cost and dimensions, so that the acquisition of such a system by medical institutions is difficult. The article describes the information-measuring system for assessing the technique of human walking, consisting of sensors attached to the body and a program on a personal computer that processes the values obtained from the sensors. In the course of work on the creation of this system, rules for selecting the transmission frequency for the measuring channels required for the identification of the step phases using micromechanical sensors have been developed. The spectral characteristics of the accelerometer sensor for each axis of orientation, respectively, are given. The variants of the server implementation when exchanging information via TCP IP Protocol are considered. The software of the server of the distributed information-measuring system is developed. Experimental data of information transfer for each variant of information exchange on the TCP IP Protocol are given. The solution for obtaining the required transmission frequency is described. This system provides for the possibility of use at home, which will help the doctor, the methodist and the patient to monitor the rehabilitation process both during hospital stay and after discharge.
Keywords: biomechanics, medical rehabilitation, kinematic portrait of a person, walking technique, transfer of measuring information