《多轴运动传感器步态信号的提取.doc

多轴运动传感器采集步态信号的 特征提取 Multi-axis MotionSensor Gait Signal Acquisition and Feature Extraction 学 院：信息科学与工程学院 专 业 班 级：测控技术与仪器1004班 学 号：100401418 学 生 姓 名：周凯旋 指 导 教 师：许 会（教授） 2014 年 06 月 摘 要 所谓的步态，就是人走路的姿态。它是一种生物特征，具有难以伪装，非侵犯性，受环境的影响较小的特征。所以说步态的特殊性为人的身份认证和识别提供了可靠的线索。而且，在医学上对异步病态的预防诊断和康复起着很显著的辅助作用。为了方便提取人的步态信号，本文提出了一种由无线采集系统构成的步态提取方式。 本方案由信号采集系统、处理系统和信号传输系统三大部分组成。其中的信号采集系统主要由多轴运动传感器MPU6050和STM8003组成，信号传输部分主要由蓝牙模块HC-06和上位机组成，信号的处理主要依靠上位机和matlab来进行步态信号的曲线绘制。整个系统的工作过程是首先由信号采集部分采集人的步态信号，经过动态卡尔曼滤波处理，经由蓝牙模块与PC的上位机进行通讯，读取步态信号，并且存储到PC上，最后利用matlab的plot函数对离散数据进行绘图，最后根据图像进行步态的特征分析和提取。 本文详细描述了传感器的详细数据，各部分的设计思路和依据，实物方便被人体携带、轻便，能够使人的步态更加自然。采集的数据准确，所测的的数据能够被软件处理。最终本设计可以完成人步态信号的特征提取。 关键词：多轴传感器；步态信号；信息采集；特征提取 Abstract The so-called gait, is walking posture of the human. It is a kind of biological characteristics, which is difficult to camouflage, non invasion, the less affected by the environment . It provides reliable clues for special gait for identity authentication and identification of human. Moreover, prevention and diagnosis and rehabilitation of asynchronous morbid plays an auxiliary role is very significant in medicine. In order to facilitate the extraction of gait signals, this paper proposes a composed of a wireless data acquisition system for gait extraction method. The project is composed by signal acquisition system, processing system and signal transmission system. Signal acquisition system which is mainly composed of multi axis motion sensor MPU6050 and STM8003, the signal transmission part consists of Bluetooth module HC-06 and upper monitor, signal processing mainly rely on upper monitor and MATLAB to have gait signal curve plotting. The working process of the system is the gait signal first by the signal acquisition , through the dynamic filter processing of calman, communication via computer Bluetooth module and upper monitor in the PC, read the gait signal, and memory to the PC, the plot function of MATLAB drawing