Fetal Movement Detection Dataset Recorded Using MPU9250 Tri-Axial Accelerometer

Experimental paradigm This data set consists of Tri-axial accelerometer measurements of fetal movement from 13 subjects. This data set consists of three different classes, namely mother’s laugh (class 1), mother’s respiratory movements (class 2) and fetal movements (class 3). A single session was recorded for each subject. Each session lasted for approximately 10 to 20 minutes. Initially the subject was requested to fill out the following form. 1. Subject’s age : ……………………………………………………… 2. Fetal age : ……………………………………………………… 3. Gender of the fetal : ……………………………………………………… 4. Number of previous pregnancies : ……………………………………… 5. Other : ……………………………………………………… At the beginning of each session the sensor was fixed and the subject was instructed to settle in to a comfortable position. She was then instructed to press the corresponding button on the device when she feel a fetal movement. And the button corresponding to mother’s laugh was pressed by an experimenter. Data recording MPU 9250(a Tri-axial accelerometer) was used to record data. It has an inbuilt 3-axis accelerometer and a 3-axis gyroscope. The MPU 9250 is a passive device which measures the fetal vibration incident on the maternal abdomen. This is used considering the health benefits of the mother and the baby. The signal was sampled at 280Hz. All the data was recorded and transferred to a PC.实验范式 本数据集包含13名受试者的胎儿运动三轴加速度计（Tri-axial accelerometer）测量数据。数据集涵盖三类不同的动作类别，分别为母亲大笑（类别1）、母亲呼吸运动（类别2）与胎儿运动（类别3）。每名受试者仅完成一次数据采集会话，单次会话时长约10至20分钟。 受试者首先需填写以下信息表格： 1. 受试者年龄：…………………………………………………… 2. 胎儿孕周：…………………………………………………… 3. 胎儿性别：…………………………………………………… 4. 既往妊娠次数：……………………………………………… 5. 其他备注：…………………………………………………… 在每次会话开始时，首先固定传感器，随后指导受试者采取舒适体位。待受试者感知到胎儿运动时，需按下设备对应的标记按钮；而母亲大笑的动作标记则由实验者按下对应按钮完成。 数据记录 本研究采用MPU 9250进行数据采集，该设备内置三轴加速度计（Tri-axial accelerometer）与三轴陀螺仪。MPU 9250属于无源设备，可采集母体腹部接收到的胎儿振动信号，该采集方案兼顾母婴双方的健康获益。信号采样率设定为280Hz，所有采集数据均被记录并传输至个人电脑（PC）。