RecodGait v2

This dataset comprises motion sensor data from 115 subjects, each one with at least two acquisition sessions in different days. Data were captured using commercial smartphones, being recorded accelerometer and rotation vector signals. During a session, the corresponding subject held the mobile device in their pocket or waist and was requested to walk freely for five minutes. At the end of each session, accelerometer and rotation vector data acquired were stored in different files. The acquisition application adopted a sampling frequency of 40 Hz.Raw data are provided in the folder named `raw_data`, containing one txt file for accelerometer capture, for each session and user, and another corresponding rotation sensor capture in another txt file. Files are named as: ___session__data_.txt. Each row consists in a sensor reading, with the first column being the timestamp. The transformed data to user coordinates are provided in the folder `user_coordinates` following similar notation for the files. In this case, only transformed accelerations are provided, being named as `data_user_coord` in txt files.

本数据集涵盖115名受试者的运动传感器数据，每名受试者至少在不同日期完成两次数据采集会话。数据通过商用智能手机采集，同步记录加速度计与旋转矢量信号。单次采集会话期间，受试者需将移动设备置于口袋或腰部，并按照要求自由行走五分钟。每轮采集会话结束后，所获取的加速度计与旋转矢量数据将分别存储至独立文件中。本次采集所用应用的采样频率为40赫兹（Hz）。原始数据存储于名为`raw_data`的文件夹内，针对每名受试者的每一轮采集会话，分别包含一个存储加速度计采集数据的TXT文件，以及一个对应旋转传感器采集数据的TXT文件。文件命名格式为：___session__data_.txt。文件每一行对应一次传感器读数，首列为时间戳。转换至受试者坐标系的变换后数据存储于`user_coordinates`文件夹中，文件命名规则与前述一致。此类文件仅包含变换后的加速度数据，其TXT文件命名为`data_user_coord`。