[1]旷江明,徐晶,杨济宁,等.基于数字人影像数据集的人体上臂体导通信信号传导机制建模与分析[J].中国医学物理学杂志,2026,43(4):497-502.[doi:DOI:10.3969/j.issn.1005-202X.2026.04.012]
　KUANG Jiangming,XU Jing,YANG Jining,et al.Modeling and analysis of signal transmission mechanisms for intra-body communication in human upper arm based on Digital Human Imaging Dataset[J].Chinese Journal of Medical Physics,2026,43(4):497-502.[doi:DOI:10.3969/j.issn.1005-202X.2026.04.012]
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基于数字人影像数据集的人体上臂体导通信信号传导机制建模与分析()

《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
43卷
期数:
2026年第4期
页码:
497-502
栏目:
医学信号处理与医学仪器
出版日期:
2026-04-28

文章信息/Info

Title:
Modeling and analysis of signal transmission mechanisms for intra-body communication in human upper arm based on Digital Human Imaging Dataset
文章编号:
1005-202X（2026）04-0497-06
作者:
旷江明1; 徐晶1; 2; 杨济宁1; 3; 张双1; 2; 3
1.内江师范学院人工智能学院， 四川 内江 641112； 2.内江师范学院智慧医疗工程应用联合实验室， 四川 内江 641112； 3.内江师范学院内江市神经疾病信息干扰工程技术研究中心， 四川 内江 641112
Author(s):
KUANG Jiangming1;  XU Jing1;  2;  YANG Jining1;  3;  ZHANG Shuang1;  2;  3
1. School of Artificial Intelligence, Neijiang Normal University, Neijiang 641112, China 2. NJNM-OMNISKY Smart Medical Engineering Applications Joint Laboratory, Neijiang Normal University, Neijiang 641112, China 3. Neijiang City Engineering Technology Research Center of Neurological Disease Information Interference, Neijiang Normal University, Neijiang 641112, China
关键词:
影像数据集; 有限元模型; 体导通信; 人体上臂; 信道衰减
Keywords:
Keywords: imaging dataset finite element model intra-body communication human upper arm channel attenuation
分类号:
R318；Q42；Q64
DOI:
DOI:10.3969/j.issn.1005-202X.2026.04.012
文献标志码:
A
摘要:
目的：研究体导通信系统中，信号在人体组织的传导情况，为构建体域网网络架构模型提供理论依据；方法：以中国数字人影像数据集为数据基础，在经过组织剖分割、云点集构建、三维重建、几何结构实体化、奇异点剔除等一系列方法后获得人体组织三维几何实体模型；最后几何实体导入到COMSOL Multiphysics 6.0中，结合体导通信边界条件构建应用物理场模型，并在稳态场景下，通过注入±20 mA的直流电信号分析信号在手臂中的传播机制。结果：通过计算发现，耦合电势在电极与皮肤接触区域，耦合电势最大，电流密度分布最大。随着传导深度与传导距离的增加，耦合电势与电流密度分布均大幅度下降。同时进一步分析信道的频率响应特性发现，随着载波频率的增加，信道的衰减随频率增加而减少，但集肤效应越来越明显。结论：通过体导通信信道模型发现，耦合电势与电流密度在电流与皮肤接触处最大，伴随通信频率不断提高，信道衰减逐渐减小，信道的集肤效应越来越明显。
Abstract:
Abstract: Objective To investigate the signal transmission characteristics in human tissues within an intra-body communication system, thereby providing a theoretical basis for the construction of body area network architecture models. Methods Based on the Chinese Digital Human Imaging Dataset, a three-dimensional geometric solid model of human tissues was established through a series of processes including tissue segmentation, point cloud set construction, three-dimensional reconstruction, geometric solid modeling, and singular point elimination. Subsequently, the geometric solid model was imported into the COMSOL Multiphysics 6.0, and a physical field model was constructed by integrating the boundary conditions of intra-body communication. Under steady-state conditions, a direct current signal of ±20 mA was injected to analyze the signal transmission mechanisms in the upper arm. Results Simulation results showed that the coupling potential and current density reached their maximum values at the electrode-skin contact area. Both the coupling potential and current density showed a substantial decrease as the conduction depth and conduction distance increased. Further analysis of the frequency response characteristics of the channel revealed that the channel attenuation decreased with the increases of carrier frequency, whereas the skin effect became more and more significant. Conclusion Based on the established intra-body communication channel model, the coupling potential and current density are found to be maximized at the electrode-skin interface. As the communication frequency increases continuously, the channel attenuation gradually decreases, whereas the skin effect of the channel becomes increasingly pronounced.

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备注/Memo

备注/Memo:
【收稿日期】2025-12-05 【基金项目】四川省重点研发项目（2021YFSC0040）；四川省创新创业人才项目（2022JDRC0134）；成都医学院四川应用心理学研究中心资助项目（CSXL- 25102）；内江师范学院科研团队项目（2021TD02） 【作者简介】旷江明，硕士，讲师，研究方向：体导通信技术、有限元建模，E-mail: 291806757@qq.com 【通信作者】张双，博士，博士后，教授，硕士生导师，研究方向：磁共振技术、体导通信技术、神经调控技术，E-mail: zhangshuanghua1@126.com
更新日期/Last Update: 2026-04-29