Measuring upper limb movement to analyze intra-body communication channel attenuation characteristics
Shuang Zhang1,2,3,4,1, Yu-Ping Qin1,2,1, Jiang-Ming Kuang1,2
1College of Computer Science, Neijiang Normal University, Neijiang, Sichuan, China.
Summary
Intra-body communication channel attenuation is minimally affected by palm state but significantly by physiological signals. Dynamic arm bending shows attenuation varies with upper arm and forearm angles, aiding theoretical model development.
Area of Science:
- Biomedical Engineering
- Human Body Communication Channels
Background:
- Investigating factors influencing intra-body communication channel attenuation.
- Focus on human palm state and arm movement effects.
Purpose of the Study:
- To quantify the impact of palm configuration (open vs. closed) on channel attenuation.
- To analyze how dynamic arm bending affects channel characteristics.
- To understand physiological signal interference in intra-body communication.
Main Methods:
- Utilized a healthy adult male's right upper arm for measurements.
- Measured channel attenuation with open and closed palm configurations.
- Assessed attenuation variations during dynamic arm bending at various angles.
Main Results:
- Closed palm state showed negligible effect on channel attenuation in stable conditions.
- Physiological signals of the body caused significant interference at low frequencies.
- Arm bending (90° to 180° intersection angle) correlated with attenuation variation.
Conclusions:
- Palm state has minimal impact on intra-body communication channel attenuation.
- Low-frequency physiological signals are a key interference source.
- Arm joint angles provide a basis for developing predictive communication models.
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