{"title":"用连续测量的时间序列评价环境电磁场","authors":"J. Vázquez, E. Olías, A. Barrado, J. Pleite","doi":"10.1109/ICSMC2.2003.1428259","DOIUrl":null,"url":null,"abstract":"Continuous measurements of the electromagnetic field strength reveal variations that are not observed in the 6' average period stipulated in CENELEC ENV 50166-2. Several examples are presented here of prolonged measurements at different places and conditions, using a wide band E field meter. Taking each record as a time series, its power spectra were analyzed by means of wavelets. This showed the existence of several cycles, mainly of 24 hours. These oscillations shows that people are normally exposed to a low level field of amplitude modulated by an extremely low frequency, of which the effects are unknown","PeriodicalId":272545,"journal":{"name":"2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03.","volume":"58 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2003-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Assessment of the environmental electromagnetic field by time series of continuous measurements\",\"authors\":\"J. Vázquez, E. Olías, A. Barrado, J. Pleite\",\"doi\":\"10.1109/ICSMC2.2003.1428259\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Continuous measurements of the electromagnetic field strength reveal variations that are not observed in the 6' average period stipulated in CENELEC ENV 50166-2. Several examples are presented here of prolonged measurements at different places and conditions, using a wide band E field meter. Taking each record as a time series, its power spectra were analyzed by means of wavelets. This showed the existence of several cycles, mainly of 24 hours. These oscillations shows that people are normally exposed to a low level field of amplitude modulated by an extremely low frequency, of which the effects are unknown\",\"PeriodicalId\":272545,\"journal\":{\"name\":\"2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03.\",\"volume\":\"58 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2003-05-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03.\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICSMC2.2003.1428259\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSMC2.2003.1428259","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Assessment of the environmental electromagnetic field by time series of continuous measurements
Continuous measurements of the electromagnetic field strength reveal variations that are not observed in the 6' average period stipulated in CENELEC ENV 50166-2. Several examples are presented here of prolonged measurements at different places and conditions, using a wide band E field meter. Taking each record as a time series, its power spectra were analyzed by means of wavelets. This showed the existence of several cycles, mainly of 24 hours. These oscillations shows that people are normally exposed to a low level field of amplitude modulated by an extremely low frequency, of which the effects are unknown
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