Human Safety Studies In Implantable Medical Devices Wireless Energy Transmission System Electromagnetic Environment

With the development of technology, the impact of electromagnetic radiation that various types of electromagnetic devices generating on human security increasingly attracts range of domestic and international attention.. high intensity electromagnetic radiation of different frequencies cause different effects of to human. Slight damage is the skin fever and nerve pain. Serious harm is insanity, heart failure, burns, and even death. Due to the limited nature of the human implantable medical device power consumption, the research for wireless energy transfer system applied to the body implantable medical devices for wireless energy supply is more and more. Therefore, human safety study on the electromagnetic radiation environment of wireless energy transfer system producing becomes extremely important.For this, in this paper we make a more systematic study for the interaction mechanism and corresponding simulation methods of between human body and implantable medical devices wireless energy transmission system electromagnetic environment. The main research work and innovations are shown below.1. Based on the introduction of Bioelectromagnetics and Bioelectromagnetics dosimetry, the basic principles and elements of FDTD method are summarized in this article.2. Present a new zoning graded non-uniform grid generation algorithm including the equivalent width of Technology. In meshing software set△xmin,△ymin,△zmin and Rx, Ry, Rz. If reduced in size along the x-axis model, Axm;ncan be set on the basis of compliance with the numerical dispersion equation for coarse mesh point. Due to in the square mesh meshing size in the x, y, z direction is constantly changing, so get the equivalent size of the actual model, you need to obtain the average of the grid cell size along the direction of the coarse grid, is the ratio of the number of grid and size of the model. The half-size model of the grid is reduced by this average in thecorresponding direction and getting the equivalent size model. And repeat the firststep, conducted mesh. By numerical verification prove the accuracy and effectivenessof the new zoning graded non-uniform grid generation algorithm including theequivalent width of Technology in the FDTD simulation.3. Use the new zoning graded non-uniform grid generation algorithm includingthe equivalent width of Technology to calculate the specific absorption rate in theimplanted medical devices wireless energy transmission system electromagneticenvironment, research the distribution of SAR when the wireless energy transfersystem resonant coil is put on different parts of the body and compare the calculatedresults with the existing international and domestic hygiene standards.