EMC anechoic chamber is used for radiation emission and radiation immunity test,and the wireless performance of products needs to be tested in OTA anechoic chamber.With more and more electronic and electrical equipmen...EMC anechoic chamber is used for radiation emission and radiation immunity test,and the wireless performance of products needs to be tested in OTA anechoic chamber.With more and more electronic and electrical equipment with wireless communication function,the rapid construction of a compatible OTA test system in the existing EMC anechoic chamber can save the cost and space of enterprises and third-party laboratories that already have EMC anechoic chamber.In this paper,the OTA test system is built in the existing EMC anechoic room,the ripple calibration test is carried out according to the OTA standard,the TRP and TIS tests are carried out on two test samples with different wireless communication standards,and the test samples are taken to the OTA anechoic room for a comparison test.The comparison between the ripple calibration data and the OTA test data showed that the EMC anechoic chamber could perform OTA test without affecting the original test ability.The data results provide a basis for the implementation of EMC anechoic chamber compatibility upgrade OTA test,and provide reference for further optimization of the compatible test system,reduction of test differences,and the design of anechoic chamber integrating two test functions.展开更多
Because of their good mechanical properties under irradiation up to 500 ?C, ferritic/martensitic steels are consideredto be the promising structural materials for advanced nuclear reactors. However, severe corrosion o...Because of their good mechanical properties under irradiation up to 500 ?C, ferritic/martensitic steels are consideredto be the promising structural materials for advanced nuclear reactors. However, severe corrosion of structuralmaterials occurs in the presence of LBE in advanced nuclear reactors, especially at high temperature[1]. Therefore,the selection of the structural material exposed to LBE is an extremely complex problem and compatibility testsare required.展开更多
为应对呼吸治疗设备在复杂电磁环境中遭受邻近磁场骚扰导致的基本性能降级与安全风险,基于电磁兼容性标准IEC 60601-1-2:2014+AMD1:2020 Medical electrical equipment-Part 1-2:General requirements for basic safety and essential p...为应对呼吸治疗设备在复杂电磁环境中遭受邻近磁场骚扰导致的基本性能降级与安全风险,基于电磁兼容性标准IEC 60601-1-2:2014+AMD1:2020 Medical electrical equipment-Part 1-2:General requirements for basic safety and essential performance-Collateral Standard:Electromagnetic disturbances-Requirements and tests(医用电气设备第1-2部分:基本安全和基本性能的通用要求并列标准:电磁兼容要求和试验)要求,本文系统解析呼吸治疗设备邻近磁场抗扰度试验的的核心体系与实践要点,厘清不同磁场骚扰源对应的场强、调制方式等关键参数要求,深入剖析试验系统构建核心,最后结合呼吸治疗设备的基本性能和基本安全明确邻近磁场抗扰度试验合格评定方法。解析结果可为呼吸治疗设备的检验人员和研发人员对邻近磁场抗扰度试验实施、电磁兼容性设计及其基本性能和基本安全应用提供理论依据和实践指导,对提升呼吸治疗设备的电磁兼容性、降低临床使用风险具有重要意义。展开更多
基金Yancheng Science and Technology Bureau(YCBK2023027)。
文摘EMC anechoic chamber is used for radiation emission and radiation immunity test,and the wireless performance of products needs to be tested in OTA anechoic chamber.With more and more electronic and electrical equipment with wireless communication function,the rapid construction of a compatible OTA test system in the existing EMC anechoic chamber can save the cost and space of enterprises and third-party laboratories that already have EMC anechoic chamber.In this paper,the OTA test system is built in the existing EMC anechoic room,the ripple calibration test is carried out according to the OTA standard,the TRP and TIS tests are carried out on two test samples with different wireless communication standards,and the test samples are taken to the OTA anechoic room for a comparison test.The comparison between the ripple calibration data and the OTA test data showed that the EMC anechoic chamber could perform OTA test without affecting the original test ability.The data results provide a basis for the implementation of EMC anechoic chamber compatibility upgrade OTA test,and provide reference for further optimization of the compatible test system,reduction of test differences,and the design of anechoic chamber integrating two test functions.
文摘Because of their good mechanical properties under irradiation up to 500 ?C, ferritic/martensitic steels are consideredto be the promising structural materials for advanced nuclear reactors. However, severe corrosion of structuralmaterials occurs in the presence of LBE in advanced nuclear reactors, especially at high temperature[1]. Therefore,the selection of the structural material exposed to LBE is an extremely complex problem and compatibility testsare required.
文摘为应对呼吸治疗设备在复杂电磁环境中遭受邻近磁场骚扰导致的基本性能降级与安全风险,基于电磁兼容性标准IEC 60601-1-2:2014+AMD1:2020 Medical electrical equipment-Part 1-2:General requirements for basic safety and essential performance-Collateral Standard:Electromagnetic disturbances-Requirements and tests(医用电气设备第1-2部分:基本安全和基本性能的通用要求并列标准:电磁兼容要求和试验)要求,本文系统解析呼吸治疗设备邻近磁场抗扰度试验的的核心体系与实践要点,厘清不同磁场骚扰源对应的场强、调制方式等关键参数要求,深入剖析试验系统构建核心,最后结合呼吸治疗设备的基本性能和基本安全明确邻近磁场抗扰度试验合格评定方法。解析结果可为呼吸治疗设备的检验人员和研发人员对邻近磁场抗扰度试验实施、电磁兼容性设计及其基本性能和基本安全应用提供理论依据和实践指导,对提升呼吸治疗设备的电磁兼容性、降低临床使用风险具有重要意义。
