Title :
Numerical evaluation of exposure to the electromagnetic fields of an electronic article surveillance system with postured infant model
Author :
Congsheng Li ; Tongning Wu
Author_Institution :
Coll. of Comput. & Commun. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China
Abstract :
This paper presents the dosimetric evaluation of the infant´s exposure to electromagnetic fields from an electronic article surveillance system working at 125 kHz. A recently developed realistic infant anatomical model is deformed to achieve the standing, sitting and the supine postures. We perform the quasi-static calculation for the 99th percentile induced electric field, the peak specific absorption rate averaging over 10 g tissue and the maximum induced current density. A comparison has been made with the adult. The results show that the postures and the effective exposed part are very important factors for the dose results. The infant is not always overexposed compared with the adult. The magnetic field acquired by two methods can not be used for guidelines compliance evaluation.
Keywords :
absorption; dosimetry; electric fields; electromagnetic fields; electromagnetic wave absorption; surveillance; dosimetric evaluation; electromagnetic fields; electronic article surveillance system; frequency 125 kHz; guidelines compliance evaluation; numerical evaluation; peak specific absorption rate; percentile induced electric field; postured infant model; quasi-static calculation; realistic infant anatomical model; supine postures; Biological system modeling; Computational modeling; Electromagnetic fields; Numerical models; Pediatrics; Solid modeling; Surveillance; electromagnetic fields; electronic article surveillance; infant model; numerical evaluation;
Conference_Titel :
Electromagnetic Compatibility, Tokyo (EMC'14/Tokyo), 2014 International Symposium on
Conference_Location :
Tokyo