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Voltage data sampling method and pulmonary ventilation monitoring device

A voltage sampling and monitoring device technology, which is applied in the field of biomedical engineering, can solve the problems of low voltage sampling accuracy, achieve the effects of improving imaging clarity and imaging accuracy, reducing production costs, and improving voltage sampling accuracy

Active Publication Date: 2021-10-29
NORTHEASTERN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, this application provides a voltage data sampling method and a pulmonary ventilation monitoring device, the main purpose of which is to solve the technical problem that the digital signal processor of the EIT system has low voltage sampling accuracy under high-frequency current signals

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  • Voltage data sampling method and pulmonary ventilation monitoring device
  • Voltage data sampling method and pulmonary ventilation monitoring device
  • Voltage data sampling method and pulmonary ventilation monitoring device

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Embodiment Construction

[0030] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] In one embodiment, such as figure 1 As shown, a sampling method of voltage data is provided, and the application of this method to a digital signal processor is taken as an example for illustration, including the following steps:

[0032] 101. Collect the voltage signal output by the electrode array through the analog-to-digital conversion module and the voltage signal collector, and judge whether the frequency of the current signal output by the excitation current source is higher than a preset frequency.

[0033] 102. If the frequency of the current signal is higher than the preset frequency, extract at least one voltage value in each period of the voltage signal, where phases of each volta...

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Abstract

The invention discloses a voltage data sampling method and a pulmonary ventilation monitoring device, and relates to the technical field of medical engineering. The method comprises the following steps: collecting a voltage signal output by an electrode array through an analog-to-digital conversion module and a voltage signal collector, and judging whether the frequency of a current signal output by an excitation current source is higher than a preset frequency; if the frequency of the current signal is higher than the preset frequency, extracting at least one voltage value in each period of the voltage signal, wherein the phases of the voltage values are different from each other; and carrying out signal integration on the extracted voltage value to obtain the voltage sampling signal of the complete period. According to the method, the production cost of a pulmonary ventilation monitoring device is reduced, the circuit complexity of the pulmonary ventilation monitoring device is reduced, and the voltage sampling accuracy of the pulmonary ventilation monitoring device in a high-frequency signal transmitting state is improved, so that the imaging definition and the imaging accuracy of the pulmonary ventilation monitoring device are effectively improved.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering, in particular to a voltage data sampling method and a lung ventilation monitoring device. Background technique [0002] Digital Signal Processor (Digital Signal Processin, DSP), also known as digital signal processing chip, is one of the most commonly used mainstream processors in digital processing systems. DSP chips are dedicated to quickly process various digital signals. The structure, data and program have their own storage space, and the workflow of pipeline technology enables the DSP chip to execute multiple instructions in one cycle. [0003] The digital signal processor can be applied to a large data processing system such as an EIT (electrical impedance tomography, electrical impedance imaging technology) system, and can greatly increase the signal processing speed of the EIT system. Among them, EIT technology is a medical functional imaging technology that takes the int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25A61B5/0536A61B5/091
CPCG01R19/2503G01R19/2506A61B5/0536A61B5/091
Inventor 杨丹刘国如黄广乐徐彬杨英健
Owner NORTHEASTERN UNIV