基于中国可视人数据集的时域有限差分法人体头部电磁仿真模型构建

Construction of FDTD electromagnetic simulation model of human head based on Chinese visible human data set

目的:为掌握人体组织电磁特性的变化,实现对真实人体结构电磁辐射特性的模拟和仿真计算。方法:在中国数字可视化人体数据集基础上,提出建立真实人体三维电磁模型的方法并利用CST STUDIO SUITE对其进行电磁仿真计算。结果:构建了适用于时域有限差分法计算的网格精度为1 mm^(3)的三维人体头部电磁模型,满足频率为30 GHz以下的电磁仿真计算在数值色散空间离散间隔上的要求。结论:该模型具有很好的可视性和可操作性,对构建数字电磁人以及优化生物电磁检测技术具有重要的理论价值和实践指导意义。

Objective To realize the simulation and simulation calculation of the electromagnetic radiation characteristics of the real human body for grasping the changes of the electromagnetic characteristics of human tissues.Methods Based on Chinese digital visual human body data set,the method for establishing the three-dimensional electromagnetic model of the real human body was proposed,and the electromagnetic simulation calculation was carried out using CST STUDIO SUITE.Results A three-dimensional electromagnetic model of the real human head which was suitable for finite-difference timedomain calculation was constructed,with a grid precision of 1 mm^(3),and it satisfied the requirement of numerical dispersion for spatial discrete spacing in electromagnetic simulation below 30 GHZ frequency.Conclusion The proposed model has good visibility and maneuverability,and it has important theoretical value and practical significance for the construction of digital electromagnetic human and the optimization of biological electromagnetic detection technology.