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Breathing information detection method

A breathing signal and breathing rate technology, applied in the field of biomedicine, can solve the problems of being susceptible to interference by movement or other signals, and the anti-interference ability of breathing signals is not strong enough, and achieve the effect of good resistance to movement interference.

Active Publication Date: 2015-12-30
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

However, the respiratory signal is a low-frequency signal, which is easily interfered by motion or other signals. Therefore, the anti-interference ability of using the waveform method to detect the respiratory signal is not strong enough.

Method used

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] see figure 1 , the first embodiment of the present invention provides a respiratory signal processing method, which includes the following steps:

[0031] S101. Perform preprocessing on the respiration signal, realize signal frequency band selection, and obtain a limited bandwidth signal.

[0032] In this embodiment, before preprocessing the respiratory signal, a respiratory signal sensor is used to collect the respiratory signal. The respiratory signal sensor mainly adopts a piezoelectric sensor. Piezoelectric sensors convert dynamic pressure signals into electrical signals. Due to the ability to respond linearly to the intensity of mechanical vibrations, high-sensitivity piezoelectric sensors can be applied to the distortion-free sensing of micro-motion information of the human torso and organs such as the heart and lungs....

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Abstract

The invention relates to a respiration information processing method. The method includes the following steps: S101, preprocessing a respiration signal, selecting signal frequency band and acquiring a bandwidth-limited signal; S103, subjecting the bandwidth-limited signal to Teager energy operator transformation to acquire instantaneous amplitude and instantaneous frequency of the respiration signal; S105, respectively performing time domain and frequency conversion on the instantaneous amplitude and the instantaneous frequency to acquire instantaneous respiration intensity and instantaneous respiration rate; S107, performing filter processing on the instantaneous respiration intensity and the instantaneous respiration rate respectively to obtain average respiration intensity and average respiration rate. In addition, the invention provides a respiration information processing system. The respiration information processing method has good movement disturbance resisting capability, and the respiration rate and the respiration intensity can be acquired simultaneously, and can be calculated online in real time.

Description

technical field [0001] The invention relates to the field of biomedical technology, in particular to a method and system for detecting respiratory information. Background technique [0002] Respiration is an important physiological process of the human body, and the monitoring and detection of human respiration is also an important part of modern medical monitoring technology. Respiratory events such as apnea, hypopnea, snoring, airflow limitation, etc. are clinically significant. Respiration intensity and respiration rate (abbreviated as respiration rate) are two important physiological parameters of respiration performance. Through the dynamic analysis of respiration intensity and respiration rate, many internal physiological information hidden behind it can be obtained. Therefore, exploring the intensity (instantaneous intensity and average intensity) and respiration rate (instantaneous respiration rate and average respiration rate) of the respiratory signal has certain ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/08G06F19/00
Inventor 周小林吴丹张元亭
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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