ECG measurement in the bathtub - electrodes on the sides of the bathtub, sitting motionless - women

The measurement data shows the measurement of the ECG signal in water in the bathtub. The data includes the measurement time, the reference ECG signal from the chest, and the ECG signal measured by electrodes placed in the bathtub without contact with the human body. Using the presented data, it is possible to estimate the optimal arrangement of measuring electrodes, e.g. in the design of a measuring mat for a bathtub, depending on the expected nature and quality of the recorded data. The data shows a record of the heart's electrical activity at a specific electrode placement in or out of the bathtub. The data was recorded using the Analog Discovery 2 system and the WaveForm software.
Bath parameters:
tap water - conductivity before the inlet approx. 640us / cm
water temperature - 36 ° C
capacitance between the electrodes and the bath water - about 1-1.4 nF
capacity between the electrodes and the water with the person inside - about 1.4 - 2nF
water conductivity after bathing - about 660 us / cm
water temperature after bathing - 34 ° C
Measurement scenarios:  electrodes on the sides of the bathtub, sitting motionless
Person: women

本数据集为浴缸水环境下的心电图（Electrocardiogram, ECG）信号测量数据。数据集涵盖采集时刻、取自胸部的参考心电图信号，以及通过置于浴缸内、未与人体直接接触的电极采集得到的心电图信号。依托本数据集，可结合预期的记录数据特性与质量，优化测量电极的布设方案——例如用于浴缸测量垫的设计环节。本数据集记录了不同电极布设位置（浴缸内/外）下的心脏电活动信号。数据采集采用Analog Discovery 2系统与WaveForm软件完成。

浴缸参数如下：
自来水（入水前）电导率：约640微西门子/厘米
初始水温：36℃
电极与浴缸水体间的电容：约1~1.4纳法（nF）
电极与浴室内人体周边水体间的电容：约1.4~2纳法（nF）
沐浴后水体电导率：约660微西门子/厘米
沐浴后水温：34℃

测量场景：电极布设于浴缸侧壁，受试者保持静坐不动
受试者：女性