method automation system for analysis of human gait quantitative kinematic parameters

摘要

The present invention demonstrates a product that automates gait analysis based on the CERNY protocol. The product is formed by two devices to be coupled one to each leg of the individual and a catwalk, formed by 2 modular sides, developed especially for the application. gait characteristics measured by the product are step length, step width, stride, speed and cadence. Each device consists of a single arduino, an altimu inertial sensor, an infrared sensor and two resistive sensors (fsr). the arduino and altimu are inside a container that is fixed to each ankle of the individual, the infrared is outside towards the heel and the resistive sensors are in the sole, one in the front and the other behind . In the product the Arduino works only as an analog / digital converter, collecting the sensor data; altimu is used to obtain the angle between the legs, so knowing the individual's leg length the program calculates the length of steps; The infrared sensor reads the distance from the foot to the side of the catwalk, knowing the width of the catwalk and taking the measurements of the two infrared the program calculates the width of steps. Resistive sensors are used to identify the moment of double support, so 3 of the 4 sensors must be triggered. the human-machine interface was developed in labview, consisting of 5 tabs, the first to fill in patient information; the second is the main page, where you enter data such as leg length, platform width, and track step length, step width values. the third tab shows the time series of the length and the step width; The fourth tab shows the values acquired by the sensors. and the fifth tab is an aid in understanding step length and width measurements.