Modeling and analysis of signal transmission mechanisms for intra-body communication in human upper arm based on Digital Human Imaging Dataset(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2026年第4期
- Page:
- 497-502
- Research Field:
- 医学信号处理与医学仪器
- Publishing date:
Info
- Title:
- Modeling and analysis of signal transmission mechanisms for intra-body communication in human upper arm based on Digital Human Imaging Dataset
- 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
- Keywords:
- Keywords: imaging dataset finite element model intra-body communication human upper arm channel attenuation
- PACS:
- R318；Q42；Q64
- DOI:
- DOI:10.3969/j.issn.1005-202X.2026.04.012
- 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.
Last Update: 2026-04-29