ecg-polar-h10-set6

Single-lead ECG tracings along with heart rate and 3-axis chest actigraphy using a Polar H10 sensor worn with on a Polar Pro chest strap, with data transferred via bluetooth to an Android smartphone (Realme 6i) that serves as a bluetooth receptor unit and data recorder via the Polar Sensor Logger app on Android by Jukka Happonen (Polar developer, this app is unofficial): https://play.google.com/store/apps/details?id=com.j_ware.polarsensorlogger
Data was compressed with 7-zip using LZMA2 in Normal compression setting and split into 5GB parts to respect the file size limit of figshare. Total is 18 GB compressed, 106 GB uncompressed.
This dataset covers the period from 2022-01-26 to 2022-03-17. There is no overlap with previous sets, this is the continuation. See other sets for further data.
This wearable was only worn when at home.
Each file represents one acquisition session, of variable time up to 140h in one session. The acquisition software also split files when the device is temporarily out of reach, so there several files with very few entries, which means the device was barely reachable or went in and out of bluetooth range. These files can be concatenated to study a longer time period. There are 4 types of files: ECG for the raw ECG at 133Hz sampling rate, HR for the heart-rate computed by the proprietary Polar embedded software in the H10 sensor and also the IBI (inter-beats intervals) to ease calculation of HRV (heart rate variability), ACC for the 3-axis (accelerometer = translation axes) chest actigraphy set at 100Hz sampling rate and 4g sampling resolution, and Marker which are manual markers by the operator to mark special temporal events but they were not used for this study so they are either deleted or empty. For the full technical specification of the Polar H10 device, see: https://github.com/polarofficial/polar-ble-sdk/tree/master/technical_documentation

本数据集包含单导联心电（Electrocardiogram，ECG）轨迹、心率数据，以及搭载Polar Pro胸带的Polar H10传感器采集的三轴胸部活动记录仪数据；数据通过蓝牙传输至安卓智能手机Realme 6i，该手机作为蓝牙接收单元与数据记录终端，由Polar开发者Jukka Happonen开发的非官方安卓应用Polar Sensor Logger完成数据录制，应用下载地址：https://play.google.com/store/apps/details?id=com.j_ware.polarsensorlogger

数据集采用7-Zip以LZMA2算法标准压缩模式进行压缩，并按照Figshare平台的文件大小限制拆分为5GB分卷文件；压缩后总容量为18GB，未压缩总容量为106GB。

本数据集覆盖时段为2022年1月26日至2022年3月17日，与此前发布的数据集无重叠，属于后续补充数据集；如需获取更多数据，请参阅其他数据集。

该可穿戴设备仅在居家场景下佩戴。

每个文件对应一次采集会话，单次会话时长可变，最长可达140小时。当设备暂时超出蓝牙通信范围时，采集软件会自动拆分文件，因此存在少量数据条目极少的文件，此类情况对应设备几乎无法被正常连接，或设备频繁进出蓝牙有效范围。此类文件可通过拼接以开展更长时段的研究。数据集包含4类文件：
1. ECG类：采样率133Hz的原始心电数据；
2. HR类：由Polar H10传感器内置专有软件计算得到的心率数据，同时包含心搏间期（Inter-beats Intervals，IBI）以简化心率变异性（Heart Rate Variability，HRV）的计算流程；
3. ACC类：采样率100Hz、采样分辨率为4g的三轴胸部活动记录仪数据（三轴对应加速度计的平移轴）；
4. Marker类：由操作者手动标记的特殊时序事件标记文件，但本研究未使用此类数据，因此该类文件要么已被删除，要么为空。
如需查看Polar H10设备的完整技术规范，请访问：https://github.com/polarofficial/polar-ble-sdk/tree/master/technical_documentation