Study On The Characteristics Of Electromagnetic Radiation In Architectural Environment

With the rapid development of electronic technology and communication technology,electronic products constantly updated in the building,at the same time the electric power equipment,mobile communicate on base stations and other basic electronic equipments are also increasing out the building.These electronic products and electronic equipments will produce electromagnetic radiation when they at work,it makes the electromagnetic environment in the building become more and more complex.Electromagnetic environment in the building not only affects the operation of electronic equipments,but also affects the people's daily life and the health of human body,and it is getting more and more attention.The research on the propagation properties of electromagnetic waves in the architectural environment will be of great theoretic and practical.This paper recommends the related knowledge of electromagnetic radiation,the basic principle of electromagnetic radiation is described.The propagation characteristics of electromagnetic wave in the structure of the wall,the shielding effectiveness of concrete wall and the absorption of the electromagnetic radiation in the human head are studied.The main studies are as follows:(1)Based on the theory of electromagnetic wave,studied the propagation characteristics of electromagnetic waves in the wall.The propagation constant,attenuation constant,skin depth and other related parameters of electromagnetic wave propagation in the wall are analyzed,and the impact of frequency,conductivity and dielectric constant on the propagation of electromagnetic waves are discussed.The propagation characteristics of electromagnetic wave in ordinary concrete are studied,the propagation parameters are researched.It is concluded that change the electromagnetic parameters of the wall can effectively control the propagation of electromagnetic waves.(2)The principle of electromagnetic shielding and the calculation methods of shielding effectiveness are discussed in this paper.The simulation model is established according to the measurement method of shielding effectiveness.The propagation properties of electromagnetic waves are analyzed in concrete wall and reinforced concrete wall.The effects of such parameters as thickness of concrete,dielectric constant,conductivity,space and diameter of rebar lattice on the shielding effectiveness in the concrete wall are analyzed,which provides reference for the design of architectural electromagnetic shielding.(3)The radiation characteristics of electromagnetic radiation on the human body are studied,a simple human head model is built,and electromagnetic simulation software is used to simulate the electromagnetic absorption rate of the human head under electromagnetic radiation.The characteristics of electromagnetic wave propagation in complex human tissues and the specific absorption rate in human head are analyzed.The effect of different radiation power,radiation distance and radiation frequency on human specific absorption rate are studied.This research provides some suggestions for the human body electromagnetic protection.Figure [17] table [16] reference [64]...