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Local fat layer thickness analyzer based on multi-electrode organism impedance measurement

A technology of impedance measurement and fat layer, which is applied in the field of wearable health equipment, can solve the problems of large interface impedance and motion artifact, large loss error, large global measurement, etc., to reduce interface impedance and motion artifact, and reduce occupancy Effect of space and cost, non-invasive and harmless operation

Pending Publication Date: 2022-03-15
ZHEJIANG UNIV
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Problems solved by technology

[0004] Most of the methods of bioimpedance now are to measure whole body fat, or adopt two-electrode measurement method and four-electrode measurement method, such as literature [Hermann Scharfetter, Patricia Brunner, Fat and Hydration Monitoring by Abdominal Bioimpedance Analysis: Data Interpretation by Hierarchical Electrical Modeling [M ].IEEE Transactions on BiomedicalEngineering,2005,52(6):975-982] adopts finite element modeling, models the human abdomen as a three-layer model, performs fat and hydration detection on the abdominal bioimpedance analysis, and studies the abdominal The effect of each layer structure on the abdominal impedance; this technology provides the idea of ​​finite element decomposition, but it uses a two-electrode measurement method, which has low accuracy in actual measurement
[0005] The literature [Jingna Mao, A Five-Tissue-Layer Human Body Communication CircuitModel Tunable to Individual Characteristics[M].IEEE Transactions on Biomedical Circuits and Systems,2018,12(2):303-312] proposed a five-layer layered model of the human body to The path loss of the human body is measured, but it uses the global path measurement to make the loss error larger. These bio-impedance measurement methods have low accuracy. For example, the global measurement has a relatively large error, and the two-electrode measurement method has relatively large interface impedance and motion artifacts. shadow, the current measurement of the four-electrode measurement method is inaccurate

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  • Local fat layer thickness analyzer based on multi-electrode organism impedance measurement
  • Local fat layer thickness analyzer based on multi-electrode organism impedance measurement
  • Local fat layer thickness analyzer based on multi-electrode organism impedance measurement

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Embodiment Construction

[0041] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Such as figure 1 and figure 2 As shown, the local fat layer thickness analyzer based on multi-electrode biological impedance measurement of the present invention includes: a current excitation module, a voltage readout module, a multi-electrode module and a data processing module, image 3 The connections between the various modules are shown.

[0043] The current excitation module is composed of a current excitation source, which is used to output the current excitation signal and apply it to the current excitation electrodes on the surface of the human tissue to be measured, that is, to connect to the current excitation electrodes 1 and 2 in the multi-electrode module, and one end connects The excitation current signal is injected into the hum...

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Abstract

The invention discloses a local fat layer thickness analyzer based on multi-electrode organism impedance measurement. The local fat layer thickness analyzer comprises the following four parts: a current excitation source, a voltage reading circuit, electrodes and data processing, the current excitation source is used for applying current to the human body tissue, the voltage reading circuit is used for measuring the voltage on the surface of the human body tissue, and the electrode is used for connecting the current excitation source, the voltage reading circuit and the human body tissue. Respectively reading voltage differences at different distances on the surface of the human tissue by using a voltage reading circuit; during data processing, a multi-electrode impedance measurement algorithm obtained through measurement fitting is substituted into a voltage reading circuit to measure a voltage difference, and the local fat layer thickness of a to-be-measured organism is obtained. Therefore, the problems caused by electrode contact impedance can be reduced, and the precision of local analysis can be improved.

Description

technical field [0001] The invention belongs to the technical field of wearable health equipment, and in particular relates to a local fat layer thickness analyzer based on multi-electrode biological impedance measurement. Background technique [0002] Bioimpedance, as one of the important parameters reflecting the physiological state of the human body, is an important index for detection by many physiological parameter detection equipment. In the past two decades, the overweight rate and obesity rate of Chinese residents have increased year by year, increasing the incidence of many chronic diseases such as high blood pressure, high blood fat, diabetes, etc., becoming a serious social health problem; people are more and more concerned about their own health and body shape. The more attention is paid, the more and more people are fitness. The body fat percentage of the human body is widely studied as an important indicator of the degree of health and physical condition of the...

Claims

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Application Information

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IPC IPC(8): A61B5/0537A61B5/107A61B5/00
CPCA61B5/0537A61B5/1072A61B5/1075A61B5/72A61B5/6802
Inventor 郑瑜蔡天翼赵博罗宇轩
Owner ZHEJIANG UNIV
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