Fetal heart monitoring method

The invention discloses a fetal heart monitoring method, which comprises the steps of re-sampling collected fetal heart sound signal and eliminating interference noise; locally enhancing a first heartsound signal in the re-sampled fetal heart sound signals with interference noise eliminated; recognizing a first heart sound from the fetal heart sound signal outputted after the local enhancement; and performing time stamping the recognized first heart sound, and calculating the heartbeat frequency according to the time stamping. The fetal heart monitoring method of the invention adopts passiveacquisition of fetal heart sounds by acoustic signals to obtain fetal heart data and then analyzes the results, which will completely eliminate the radiation risk of an ultrasonic Doppler fetal heartrate device. 本发明公开种胎心监测方法，包括步骤：对采集到胎心音信号重采样，并消除干扰噪声；对重采样并消除干扰噪声的胎心音信号中的第心音信号局部增强；从局部增强后输出的胎心音信号中识别出第心音；对识别出的第心音进行时间标记，并根据时间标记计算出心跳频率。本发明通过声学信号采取被动式的采集胎心音来得到胎心数据，然后分析得出结果，将完全解除超声波多普勒胎心仪设备的辐射风险。