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Magnetocardiogram signals collecting processing method based on digital signal processing and device thereof

A digital signal processing, acquisition and processing technology, used in data processing applications, medical science, diagnosis, etc., can solve the problems of slow speed, no processing function of data acquisition card, no real-time performance, etc., to achieve the effect of simple structure

Inactive Publication Date: 2009-09-02
PEKING UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the current acquisition and processing method is that the data acquisition card has no processing function, and the data processing relies on software offline, which is not real-time and relatively slow; moreover, in the predictable portable MCG monitoring and testing equipment, MCG Acquisition and processing systems must digitize, store or transmit

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  • Magnetocardiogram signals collecting processing method based on digital signal processing and device thereof
  • Magnetocardiogram signals collecting processing method based on digital signal processing and device thereof
  • Magnetocardiogram signals collecting processing method based on digital signal processing and device thereof

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Embodiment Construction

[0018] Such as figure 1 As shown, the main functional modules of the system hardware structure include: power supply module, AD conversion module, USB interface, voltage monitoring module and DSP chip.

[0019] In the actual system, the DSP chip for core control and processing adopts TMS320VC5416 produced by TI Company, through which the ADC is controlled, responds to various requests from the USB interface, realizes algorithm processing of data and sends processing results to the host, which is the core part of the entire system .

[0020] figure 1 The middle monitoring reset circuit mainly completes the system voltage detection and the DSP chip reset (reset) pulse generation during power-on and manual reset.

[0021] The system power supply adopts one +5V DC voltage.

[0022] The A / D conversion module in the actual system adopts TI's TLV2541, which is a single-channel 12-bit successive approximation ADC with an external reference source, and its precision can meet the cur...

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Abstract

The invention provides a DSP-based method and device for collecting and processing magnetic cardiogram signals, belonging to the field of real-time hardware processing of magnetic cardiogram signals (MCG). The system includes an A / D conversion unit and a DSP signal processing unit, which performs A / D conversion on the magnetic signal detected by the superconducting quantum interferometer, and transmits it to the DSP processing unit, and the DSP processing unit performs an R-wave detection algorithm on the data , to obtain the R-wave position of the accurate localization of the cardiomagnetic signal. The invention utilizes the high-speed digital signal processing capability of the DSP chip and the flexible modification of the processing algorithm to realize real-time processing of the MCG hardware.

Description

technical field [0001] The invention belongs to the field of magnetocardiogram (MCG) processing, in particular to a method for collecting and processing magnetocardiogram based on digital signal processing (Digital Signal Processing, DSP). Background technique [0002] In recent years, with the development of MCG detection technology, the research and design of related data processing methods and equipment has become an important research direction in this field. The research on MCG in our country has entered the experimental stage of human MCG sample collection, and the collection of animal MCG has also been carried out. [0003] At present, the processing flow of MCG is generally to first convert the signal detected by the superconducting quantum interferometer (SQUID) through the data acquisition card for A / D conversion, then transfer it to the computer for storage, and then call the software application program for data processing. MCG is very weak, the human heart is o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0456G06Q50/00A61B5/352
Inventor 刘新元谢柏青何定武白云
Owner PEKING UNIV