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Electrocardiosignal processing system

A technology of ECG signal processing system, applied in medical science, diagnosis, diagnostic recording/measurement, etc., can solve the problems of low signal processing speed, large amount of calculation, poor robustness, etc.

Active Publication Date: 2010-09-15
SHENZHEN UNIV
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a kind of ECG signal processing system

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  • Electrocardiosignal processing system
  • Electrocardiosignal processing system
  • Electrocardiosignal processing system

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Embodiment Construction

[0059] 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.

[0060] figure 1 It is a schematic flowchart of a method for extracting ECG signal features by an ECG signal processing system according to an embodiment of the present invention. figure 1 The illustrated method 100 is used for feature extraction of R-waves of ECG signals.

[0061] In step 101, multiple wavelet transformations are performed on the sampled ECG signal x(n) based on an adaptive lifting method until reaching a preset scale value;

[0062] In step 102, the threshold is calculated according to the wavelet coefficient d(n);

[0063] In step 103, the position of the R wave in the ECG sig...

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Abstract

The invention relates to an electrocardiosignal processing system. The system is based on an FPGA platform and comprises a preprocessing unit, a wavelet transforming unit, a characteristic extracting unit and a signal processing control unit, wherein the preprocessing unit is used for preprocessing a sampled electrocardiosignal; the wavelet transforming unit is used for performing wavelet decomposition on the preprocessed electrocardiosignal by an adaptive lifting method; the characteristic extracting unit is used for positioning the characteristic position of the electrocardiosignal based on the adaptive lifting method; and the signal processing control unit is used for controlling normal operation of the preprocessing unit, the wavelet transforming unit and the characteristic extracting unit. The characteristic extracting method has high correctness, higher anti-jamming capability and low operation amount. The electrocardiosignal is processed based on the FPGA platform, so real-time signal processing capability can be effectively improved and the defect in the aspect of electrocardiosignal analyzing and processing due to the performance limit of a processor in a conventional electrocardiosignal processing system is overcome. Simultaneously, the system can also meet the requirements of a portable medical apparatus on the integration degree increment, power consumption reduction, system miniaturization and the like.

Description

technical field [0001] The present invention relates to electrocardiographic signal processing technology, more specifically, relates to a kind of electrocardiographic signal processing system. Background technique [0002] Electrocardiogram (electrocardiogram) is recorded by body surface electrodes over time, reflecting the recording of cardiac electrical activity, and is the earliest bioelectrical signal studied and applied clinically. Because ECG has important clinical applications in the diagnosis of cardiovascular diseases and the evaluation of drug efficacy, it is still a research hotspot in the medical and biomedical engineering fields. The ECG signal is composed of 4 basic waveforms, which are QRS wave, P wave, T wave and U wave with a 75% probability of occurrence under normal circumstances. This feature division was proposed by Willem Einthoven and is still in use today. [0003] With the continuous improvement of the performance and functional coverage of automat...

Claims

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Application Information

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IPC IPC(8): A61B5/0452A61B5/0456A61B5/0472A61B5/352A61B5/366
Inventor 纪震李琰李蓁储颖
Owner SHENZHEN UNIV
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