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图（ECG）轨迹，以及搭配Polar Pro胸带佩戴的Polar H10传感器采集的三轴胸部活动数据。数据通过蓝牙传输至作为蓝牙接收与数据记录终端的Android智能手机（Realme 6i），并由Jukka Happonen（Polar开发者）开发的非官方Android应用Polar Sensor Logger完成记录，应用下载地址：https://play.google.com/store/apps/details?id=com.j_ware.polarsensorlogger。数据采用7-Zip工具以LZMA2算法、标准压缩模式进行压缩，并拆分为5GB的分卷以适配Figshare的文件大小限制；压缩后总容量为18GB，解压后总容量为106GB。本数据集覆盖2022年1月26日至2022年3月17日的时段，与此前发布的数据集无重叠，属于后续补充数据集，更多相关数据可查阅其他数据集文件。该可穿戴设备仅在家中使用时佩戴。每个文件对应一次采集会话，单次会话最长时长可达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采集文件，因此存在少量条目极少的文件，此类情况对应设备几乎无法被正常连接，或频繁进出蓝牙覆盖范围。此类拆分后的文件可进行拼接，以开展更长时间跨度的研究分析。本数据集共包含4类文件：1. ECG文件：采样率为133Hz的原始心电图数据；2. HR文件：由Polar H10传感器内置专有软件计算得到的心率数据，同时包含心跳间期（IBI, inter-beats intervals）数据，可简化心率变异性（HRV, heart rate variability）的计算流程；3. ACC文件：三轴加速度计（即平移轴）采集的胸部活动数据，采样率为100Hz，采样分辨率为4g；4. Marker文件：由操作者手动标记的特殊时间事件标记，但本研究未使用此类数据，因此该类文件要么已被删除，要么为空文件。Polar H10设备的完整技术规格可参考：https://github.com/polarofficial/polar-ble-sdk/tree/master/technical_documentation