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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, applied in data processing applications, medical science, diagnosis, etc., can solve problems such as slow speed, non-real-time performance, and data acquisition card without processing functions, etc., and achieve the effect of simple structure

Inactive Publication Date: 2008-04-30
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

[0023] 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.

[0024] 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 .

[0025] 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.

[0026] The system power supply adopts one +5V DC voltage.

[0027] 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 method and a device for collecting and processing DSP-based magnetocardiogram (MCG) signals, which belongs to the field of magnetocardiogram signal real-time hardware processing, wherein the system comprises an analog / digital (A / D) conversion unit and a DSP (digital signal processing) signal processing unit. Magnetocardiogram signals which are detected by a superconducting quantum interference device undergo A / D conversion, and then are transmitted to the DSP signal processing unit, and the DSP signal processing unit carries through the R-wave detection algorithm of the data for obtaining the pinpoint location of R-wave of magnetocardiogram signals. By utilizing the high-speed digital signal processing capability of DSP chips and the characteristic of flexibly modifiable processing algorithm, the hardware real-time processing of magnetocardiogram signals can be realized.

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