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Fetal heart sound processing method and device, and fetal heart sound detection equipment

A processing method and detection equipment technology, applied in the direction of organ movement/change detection, ultrasound/sound wave/infrasonic image/data processing, medical science, etc. Problems such as Wiener filtering and Kalman filtering limitations, to achieve the effect of reducing interference

Active Publication Date: 2018-08-28
EDAN INSTR
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  • Abstract
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Problems solved by technology

At present, when the fetal heart sound detection equipment plays the fetal heart sound, the background noise is very loud, and the fetal heart beat is not very clear. This is because the fetal heart sound is a typical biomedical signal, which is a non-stationary random signal. The Wiener filter and Kalman filter commonly used in existing equipment are limited, and it is difficult to effectively filter out the noise of the fetal heart sound

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  • Fetal heart sound processing method and device, and fetal heart sound detection equipment
  • Fetal heart sound processing method and device, and fetal heart sound detection equipment
  • Fetal heart sound processing method and device, and fetal heart sound detection equipment

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Embodiment Construction

[0050] Embodiments of the present invention provide a fetal heart sound processing method and device and a fetal heart sound detection device, which are used to solve the problem that the existing fetal heart sound detection equipment is difficult to effectively filter out the background noise of the fetal heart sound.

[0051] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0052] see figur...

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Abstract

According to the embodiment, the invention discloses a fetal heart sound processing method, in order to solve a problem of existing fetal heart sound detection equipment which is difficult in effectively filtering off floor noise of fetal heart sound. According to the embodiment, the method comprises the following steps: acquiring ultrasonic echo signals which are collected when fetal heart soundis detected; processing the ultrasonic echo signals, so that fetal heart sound frequency digital signals are obtained; implementing de-noising treatment on the fetal heart sound frequency digital signals in accordance with a preset de-noising coefficient, so that fetal heart sound frequency signals that floor noise is filtered off are obtained, wherein the de-noising coefficient is confirmed in advance through no-load audio signals which are detected out when fetal heart sound detection equipment is under no-load; and outputting the fetal heart sound signals. According to the embodiment, the invention also provides a fetal heart sound processing device and the fetal heart sound detection equipment.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a fetal heart sound processing method and device and a fetal heart sound detection device. Background technique [0002] The fetal heart sound signal is a considerable indicator reflecting the electrophysiological activity of the fetal heart, and an important life parameter that characterizes the existence of a living body. The detection of fetal heart sound in the perinatal period of pregnant women is the most direct way to judge the status of the fetus in utero. It is also the easiest way. At present, when the fetal heart sound detection equipment plays the fetal heart sound, the background noise is very loud, and the fetal heart beat is not very clear. This is because the fetal heart sound is a typical biomedical signal, which is a non-stationary random signal. The Wiener filter and the Kalman filter commonly used in existing equipment are limited, and it is difficult to effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/08
CPCA61B8/0866A61B8/52A61B8/5269
Inventor 陈金亮武学星黄东李美升
Owner EDAN INSTR
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