Rufo-Pérez Montaña, Antolín-Salazar Alicia, Paniagua-Sánchez Jesús M, Jiménez-Barco Antonio, Rodríguez-Hernández Francisco J
Department of Applied Physics, School of Technology, Universidad de Extremadura, Avenida de la Universidad s/n, 10003 Cáceres, Spain.
School of Technology, Universidad de Extremadura, Avenida de la Universidad s/n, 10003 Cáceres, Spain.
Sensors (Basel). 2025 Feb 20;25(5):1301. doi: 10.3390/s25051301.
The primary aim of this study was to evaluate the spatial and temporal variation in human exposure to electromagnetic fields across different frequency bands within an urban area identified as the commercial zone of a medium-sized city. Central to this investigation was the use of an exposimeter, strategically positioned on the back of the operator and secured to the hip area via a belt, to ensure comprehensive and accurate field measurements. An initial analysis was conducted to determine the shielding coefficients of the human body, allowing for precise corrections of the electric field values used in the spatial assessment. To map power density across the study area for each frequency, kriging interpolation was applied. Furthermore, temporal variations in exposure levels were analyzed at three distinct times of day-morning business hours, afternoon business hours, and non-business hours-using robust statistical methods. The study's innovative approach lies in the integration of GIS technology to uncover and visualize temporal patterns in exposure, particularly during periods of higher pedestrian density. This integration facilitated both the detection of temporal variations and the spatial representation of these changes, enabling rapid identification and assessment of exposure hotspots.
本研究的主要目的是评估在一个被确定为中等城市商业区的市区内，人类在不同频段接触电磁场的时空变化。这项调查的核心是使用一台暴露计，将其战略性地放置在操作人员的背部，并通过腰带固定在臀部区域，以确保全面而准确地测量场强。进行了初步分析以确定人体的屏蔽系数，从而对空间评估中使用的电场值进行精确校正。为了绘制每个频率在研究区域内的功率密度图，应用了克里金插值法。此外，使用稳健的统计方法，在一天中的三个不同时间——上午营业时间、下午营业时间和非营业时间——分析了暴露水平的时间变化。该研究的创新方法在于整合地理信息系统（GIS）技术，以揭示和可视化暴露的时间模式，特别是在行人密度较高的时期。这种整合有助于检测时间变化以及这些变化的空间表现，从而能够快速识别和评估暴露热点。
