Relatórios técnicos do FAQtos
Processos de Medida
Instalação
Título | Radiofrequency Interference with Medical Devices |
Resumo | The past few years have seen increased reports that medical devices, such as pacemakers, apnea monitors, electrically powered wheelchairs, etc., have failed to operate correctly because of interference from various emitters of radiofrequency energy. This condition is called radiofrequency interference (RFI). The consequences of these failures range from inconvenience to serious injuries and death. Reasons for this problem are twofold: 1) increasing numbers of electronically controlled medical devices with inadequate electronic protection against RFI, and 2) a significant increase in the number of RF sources in the environment. Medical devices are widely used outside the hospital and may be attached to, or implanted in, patients. Portable wireless communications equipment, including cellular phones, handheld transceivers, and vehicle mounted transceivers, comprise one of the largest sources of RFI. Some medical devices are especially sensitive to the type of digital modulation that some of the wireless communications devices utilize. (…) COMAR recommends that the various parties involved in the manufacture and use of RFI prone medical devices take steps to avoid serious RFI problems that may lead to safety hazards. Medical device manufacturers should design and test their products to ensure conformance with current RFI standards and educate the users of their devices about the possible symptoms of potential RFI. If there exists the possibility of RFI problems to medical devices, steps should be taken to ensure that all sources of RF energy be kept at a sufficient distance. |
Fonte | Institute of Electrical and Electronics Engineers (IEEE) Committee on Man and Radiation (COMAR) |
Origem | Estados Unidos da América |
Autor/Editor | IEEE – COMAR |
Disponibilidade | Disponível online |
Endereço | https://www.embs.org /wp-content/uploads/sites/38/2024/03/interfer.pdf |
Referência | |
Data | Janeiro 1998 |
Título | Product standard to demonstrate the compliance of wireless communication devices, with the basic restrictions and exposure limit values related to human exposure to electromagnetic fields in the frequency range from 300 MHz to 6 GHz: devices used next to the ear |
Resumo | This product standard applies to wireless communication devices used in close proximity to the human ear (e.g. mobile phones, wireless headsets). The applicable frequency range is from 300 MHz to 6 GHz. The objective of this standard is to demonstrate the compliance of such devices with the basic restrictions and exposure limit values related to human exposure to radio frequency electromagnetic fields. For devices used next to the body or in front of the face the applicable product standard is EN 50566:2017. For low power devices the applicable product standard is EN 50663:2017. |
Fonte | European Committee for Electrotechnical Standardization (CENELEC) |
Origem | Internacional |
Autor/Editor | CLC/TC 106X |
Disponibilidade | Disponível por encomenda |
Endereço | https://standards.cencenelec.eu /dyn/www/f?p=CENELEC:110:::::FSP_PROJECT,FSP_ORG_ID:69850,1258483&cs=12F1F46FAB5E66D0B65C728BAEC7488B3 |
Referência | EN 50360:2017 |
Data | Julho 2017 |