被动式人体探测系统的双人体耦合心电场分析

Research on the coupling heart electric field using passive human body detection system

在利用以被探测者与探测者双人体心脏耦合电场为探测目标的人体探测系统中,对目标电场的分析是整个研究过程的关键环节。重点讨论了双人体心电偶极子所产生的耦合电场问题,并利用有限元方法对其进行分析。文中首先阐述了以心电偶极子为电场源的人体心电场产生原理;其次,分析了双人体心脏耦合电场模型及特性;最后,利用三维有限元方法对耦合电场进行建模与仿真,并且将其与单人体心电场进行比较。据此进行的仿真结果清晰展示了双人体耦合心电场的特性与优点,且与理论分析相一致。研究的结论为以人体心电场为探测目标的静电探测系统建立了有效的电场模型,对人体探测技术的进一步研究具有重要意义。

An analysis of the coupling heart electric field is a pivotal step in the human body detection system which target is the heart coupling electric field between the operator and the detected living human.In this paper,the double-human heart coupling electric field is discussed and the Three-dimensional finite element method is used to analytically solve that problem.Firstly,we described the principle of the single human heart electric field based on the cardiact electric dipoles.Then,the double-human coupling heart electric field is analysised.Finally,the Three-dimensional finite element method is used to simulat and calculate the coupling heart electric field.The three different typical coupling heart electric field is shown in the result.Through comparing with the single human heart electric field,it has obvious advantages.The conclusion of this paper is the most significant studies of the passive electrostatic human body detection technique.