BITS-2 Dataset for Fall detection

Data was collected using a custom built-wrist worn end worn on the left-wrist. Qualcomm Snapdragon 820c. We used MAX30102 Heart rate and SP02 sensor, MPU6500, which gives 3-axis acceleration, 3-axis linear acceleration and 3-axis gyroscope data and GY273 Magnetometer chip for data collection. All the sensors are interfaced to the SoC via the I2C interface using a Mezzanine board. Table, each table having six columns, time-stamp, x axis data, y-axis data and z axis data, number of axis and type of sensor(label) except in case of heart-rate where there will be only three columns, time-stamp, beats per minute and label (hrt for heart-rate) In this data set, the data was collected from a total of 41 volunteers performing 16 ADLs and 8 Falls . Every activity was repeated for 5 trials.

本数据集采用定制开发的左手腕穿戴式采集终端进行数据采集，搭载高通骁龙（Qualcomm Snapdragon）820c。本次采集使用MAX30102心率与血氧饱和度（SPO2）传感器、MPU6500惯性测量单元，可输出三轴加速度、三轴线加速度及三轴陀螺仪数据，同时搭配GY273磁力计芯片。所有传感器均通过夹层板（Mezzanine board）以I2C接口与片上系统（SoC）相连。
数据以表格形式存储，除心率数据外，每张表格包含六列字段：时间戳、X轴数据、Y轴数据、Z轴数据、轴数及传感器类型（标签）；心率数据表格仅包含三列字段：时间戳、每分钟心跳数及标签（心率对应标签为hrt）。
本数据集共招募41名志愿者，采集其完成16项日常活动（Activities of Daily Living, ADLs）及8项跌倒动作的数据，每项活动均重复进行5次测试。