摘要
采用电磁感应方式为体内胶囊内窥镜供能时,人体必然暴露于发射线圈产生的强电磁场中。本研究采用数值计算的方法,在包含62种人体组织、分辨率为0.33 mm×0.33 mm×2 mm的三维真实人体仿真模型上求解人体不同组织在该电磁场中的感应电流密度和比吸收率,并根据国际非电离辐射防护委员会安全性标准对其进行安全性评估。结果表明,发射功率为25 W,谐振频率为266.5 kHz的能量传输系统产生的电磁场对人体是安全的。本研究为无线能量传输系统奠定了生物安全性基础。
The human body is exposed to the strong electromagnetic field produced by transmitting coil when a capsule endoscopy inside is transmitted power using inductive coupling. Using a numerical calculation method, induced current density and specific absorption rate （SAR）of different tissues of human body were acquired, based on a realistic human model consists of 56 kinds of tissues or organs and with a resolution of 0.33 mm × 0.33 mm × 2 mm. The human safety of the wireless power transmission system was evaluated according to standards of the International Commission on Non-Ionizing Radiation Protection （ICNIRP）. The results showed that the electromagnetic field was safety to human body when transmitting power was 25 W and the resonant frequency was 266.5 kHz. This study laid a foundation of biological safety for power transmission system.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
2009年第5期719-724,共6页
Chinese Journal of Biomedical Engineering
基金
国家高技术研究发展(863)计划(2006AA04Z368)
关键词
无线能量传输
电磁感应
全人体电磁仿真模型
wireless power transmission
inductive coupling
whole-body electromagnetic simulation model
