ecg-polar-h10-set1

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 15.7 GB compressed, 103 GB uncompressed. This dataset covers the period from 2020-10-21 to 2021-03-24. 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（Electrocardiogram, ECG）轨迹数据，搭配心率数据与三轴胸部活动记录仪数据，采集设备为佩戴于Polar Pro胸带（Polar Pro chest strap）上的Polar H10传感器（Polar H10 sensor）。数据通过蓝牙（Bluetooth）传输至作为蓝牙接收与数据记录终端的Android智能手机（Android smartphone）Realme 6i，数据记录由Polar开发者Jukka Happonen开发的非官方Android版Polar Sensor Logger应用完成，应用下载链接为：https://play.google.com/store/apps/details?id=com.j_ware.polarsensorlogger

数据采用7-zip以LZMA2标准压缩模式进行压缩，并按照Figshare的文件大小限制拆分为5GB的分卷文件，压缩后总容量为15.7GB，解压后总容量为103GB。

本数据集覆盖的时间范围为2020年10月21日至2021年3月24日，如需获取更多数据可查阅其他数据集子集。

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。

当设备暂时脱离蓝牙连接范围时，采集软件会自动拆分文件，因此存在部分条目极少的文件，此类情况对应设备几乎无法被检测到，或反复处于蓝牙连接范围内外的状态。此类文件可通过拼接以开展更长时间跨度的研究。

本数据集包含4类文件：1. 心电图（Electrocardiogram, ECG）文件：存储采样率为133Hz的原始心电图数据；2. 心率（Heart Rate, HR）文件：包含由Polar H10传感器内置专有软件计算得到的心率数据，同时附带心跳间期（Inter-Beats Intervals, IBI）数据以简化心率变异性（Heart Rate Variability, HRV）的计算；3. 三轴加速度计（Accelerometer, ACC）文件：为采样率100Hz、采样分辨率4g的三轴胸部活动记录仪数据（三轴即加速度计的平移轴）；4. 标记（Marker）文件：为操作者手动标记的特殊时间事件标记，但本研究未使用该类数据，因此此类文件要么已被删除，要么为空。

如需查看Polar H10设备的完整技术规格，请访问以下链接：https://github.com/polarofficial/polar-ble-sdk/tree/master/technical_documentation