Method and device for improving accuracy of Doppler fetal heart rate data

A Doppler fetal heart rate and fetal heart rate technology, applied in the measurement of pulse/heart rate, etc., can solve the problems of complex post-processing, high cost, multiple hardware resources, etc., achieving less hardware resources, low cost, and accurate value range Effect

Active Publication Date: 2013-07-24
EDAN INSTR
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Problems solved by technology

[0004] At present, the post-processing of fetal heart Doppler detection and fetal monitor detection in the prior art is relatively complicated, and can be used on fetal heart Doppler ...

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  • Method and device for improving accuracy of Doppler fetal heart rate data
  • Method and device for improving accuracy of Doppler fetal heart rate data
  • Method and device for improving accuracy of Doppler fetal heart rate data

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[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] A method for improving the accuracy of Doppler fetal heart rate data, the signal collected and processed is the fetal heart Doppler envelope signal of ultrasonic echo. like figure 1 As shown, for the collected fetal heart Doppler envelope signal, the preprocessing of the fetal heart Doppler envelope signal is mainly to perform denoising, filtering and other processing on the fetal heart Doppler envelope signal. like Figure 4 As shown, the method includes the following steps:

[0046] The preprocessed fetal heart Doppler envelope signal is divided into two paths, one path is used for hard...

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Abstract

The invention relates to a method and a device for improving the accuracy of Doppler fetal heart rate data. The method comprises steps of respectively performing hardware zero-crossing checking processing and self-correlation processing on preprocessed fetal heart Doppler envelope signals so as to obtain a first fetal heart rate and a second fetal heart rate; updating a corrected heart rate zone with the most second fetal heart rate occurrence probability through the first fetal heart rate; enabling a measured interval to be more accurate through updating the corrected heart rate zone with the most second fetal heart rate occurrence probability so as to obtain the more accurate and higher-statistic probability corrected heart rate zone with the most second fetal heart rate occurrence probability; and furthermore, obtaining the more accurate human body heart rate value. By utilizing the method, the monitoring intermediate data is adjusted and corrected so as to improve the detection accuracy, less hardware resources are needed, and the method is low in cost and easy to implement.

Description

technical field [0001] The invention relates to the field of fetal heart rate signal processing, in particular to a method and device for improving the accuracy of Doppler fetal heart rate data. Background technique [0002] The detection of fetal heart rate is of great significance in clinical diagnosis, especially the monitoring of fetal heart rate during the perinatal period, which is more helpful to improve the quality of fetal delivery and reduce the rate of fetal malformation and mortality. Fetal heart rate detection is roughly divided into two stages. In the early stage (before 28 weeks of gestation), it is mainly based on fetal heart rate Doppler detection, and in the later stage (after 28 weeks of gestation), it is mainly based on fetal monitor detection. The main difference is that the fetal heart rate Doppler is a continuous ultrasound Doppler with a slightly larger transmission power, which is used for short-term fetal heart rate inspection. The equipment used fo...

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Application Information

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IPC IPC(8): A61B8/02
Inventor 刘冰
Owner EDAN INSTR
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