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EMC for Installers: Electromagnetic Compatibility of Systems and Installations

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為了解決High Power Connector的問題，作者Helvoort, Mark Van,Melenhorst, Mathieu 這樣論述：

Dr.ir. Mark van Helvoort, PMP, PBADr.Ir. Mark van Helvoort, PMP, PBA, is as program manager at Philips responsible for public-private partnerships related to Magnetic Resonance Imaging (MRI). MRI Scanners are complex systems with an inherently challenging electromagnetic environment. As project mana

ger he is currently involved in investigating the coexistence of active medical implantable devices and MRI. Before this function he was as hardware architect responsible for system EMC design and as group leader he has been responsible for RF electronics. Before joining Philips in 1999 he was with

AMP (currently TE Connectivity) where he was responsible for very high speed connector simulations, investigations related to automotive wire harnessing and EMC aspects of premises networks. He was responsible for the installation of EMC test lab for automotive components. He received his Ph.D. from

Eindhoven University in 1995. His thesis described grounding structures for the EMC protection of cabling and wiring. Parts of his thesis were adapted for publication in a Dutch journal for installers (＂Installatie Journaal＂). In 2011 Dr.Ir. van Helvoort and Melenhorst B.Sc. authored a Dutch book o

n EMC ＂EMC van Installaties - Op weg naar eletromagnetische compatibiliteit＂. In total Dr.Ir. van Helvoort, at the time of writing, holds 77 publications and 27 patents. He is a senior member of IEEE. 　Mathieu Melenhorst B.Sc.Mathieu Melenhorst, B.Sc., is a seasoned building service consultant speci

alized in electromagnetic phenomena at Sweco, the Netherlands with a track record in electromagnetic compatibility of large installations and complex systems. In his current role he is responsible in a wide variety of projects for preventing electromagnetic interaction between equipment and between

equipment and humans (EMC and EMF), electrostatic discharge (ESD), lightning protection, stray current management (corrosion prevention) and power quality. Before joining Sweco, Mathieu Melenhorst worked at Alewijnse on marine systems, at Croon Elektrotechniek on infrastructural projects as speciali

st in EMC and Lightning. At Thales Nederland he was involved as EMC engineer in radar and optical systems for naval vessels and at FEI/Philips Electron Optics (currently Thermo Fisher Scientific) as EMC designer for electron microscopy systems. Mathieu has written a good number of technical papers,

including a book on EMC in Dutch, together with Mark van Helvoort. He is member of the Dutch ESD-EMC society and a gifted speaker at seminars.

High Power Connector進入發燒排行的影片

數位 VU Meter 串流播放器製作

為了解決High Power Connector的問題，作者楊文浪 這樣論述：

本論文以樹莓派為基礎，搭配線性電源、數位類比轉換晶片與播放軟體Volumio，製作一部多功能串流音樂播放器， 能對應目前主流串流音樂平台，如：Spotify、Tidal、Qobuz、YouTube...等，並且能夠使用手機平板等裝置連網撥放，首先透過開源軟體 Volumio整合樹莓派裝置之I2S 介面與數位類比轉換晶片，進行軟硬體整合，並修正軟體輸出介面，使其功能更為順暢，在商品化時加入HDMI介面之長條螢幕， 並增加數位錶頭(VU Meter) 於 Volumio 軟體中，使其成為功能性與視覺性兼備之串流音樂播放器。

EMC for Installers: Electromagnetic Compatibility of Systems and Installations

為了解決High Power Connector的問題，作者Van Helvoort, Mark/ Melenhorst, Mathieu 這樣論述：

The integration of electronics in large systems and installations steadily increases, consider for example the emergence of the Industrial Internet of Things. Power consumption decreases while the operating speed increases making equipment potentially more vulnerable for interference. The responsibi

lity of the installer is shifting towards that of the system integrator, requiring more in-depth knowledge to achieve and maintain EMC during the technical and economical lifespan of the system or installation and the distinction between both diminishes.EMC for Installers: Electromagnetic Compatibil

ity of Systems and Installations combines an integral risk based approached to EMC design and management with robust technical measures. Written by two experts, who both started nearly three decades ago in EMC, it provides guidance to those new in the field and servers as reference to those with exp

erience. The book starts with the basic concept of EMC and evolves gradually towards more difficult topics. Particular attention is given to grounding concepts and the protection of cabling and wiring. This book puts a strong focus on passive means that are widely available for each installer: cable

conduits used for cable routing can be exploited for significant improvement of the EMC-behavior of the system or installation. In addition, it will be explained how to use standard metallic enclosures to enhance the EMC-performance. For most demanding situations shielded rooms and shielding cabine

ts are explained. This book describes pre-compliance and full-compliance testing tailored to large systems. Templates and checklists are provided for both risk and management and test management.Electromagnetic compatibility explained as simple as possible, without over-simplifying. Practical approa

ch, with hands-on demonstrations based on an example installation.Learn how to exploit cable conduits, used for cable routing anyway, to improve the EMC performance of an installation.Learn how to exploit standard metallic enclosures to improve EMC in systems.Design of power distribution networks to

minimize disturbing fields. Toolbox and templates for managing and sustaining EMC over a long lifetime. Dr.ir. Mark van Helvoort, PMP, PBADr.Ir. Mark van Helvoort, PMP, PBA, is as program manager at Philips responsible for public-private partnerships related to Magnetic Resonance Imaging (MRI). M

RI Scanners are complex systems with an inherently challenging electromagnetic environment. As project manager he is currently involved in investigating the coexistence of active medical implantable devices and MRI. Before this function he was as hardware architect responsible for system EMC design

and as group leader he has been responsible for RF electronics. Before joining Philips in 1999 he was with AMP (currently TE Connectivity) where he was responsible for very high speed connector simulations, investigations related to automotive wire harnessing and EMC aspects of premises networks. He

was responsible for the installation of EMC test lab for automotive components. He received his Ph.D. from Eindhoven University in 1995. His thesis described grounding structures for the EMC protection of cabling and wiring. Parts of his thesis were adapted for publication in a Dutch journal for in

stallers (＂Installatie Journaal＂). In 2011 Dr.Ir. van Helvoort and Melenhorst B.Sc. authored a Dutch book on EMC ＂EMC van Installaties - Op weg naar eletromagnetische compatibiliteit＂. In total Dr.Ir. van Helvoort, at the time of writing, holds 77 publications and 27 patents. He is a senior member o

f IEEE. 　Mathieu Melenhorst B.Sc.Mathieu Melenhorst, B.Sc., is a seasoned building service consultant specialized in electromagnetic phenomena at Sweco, the Netherlands with a track record in electromagnetic compatibility of large installations and complex systems. In his current role he is responsi

ble in a wide variety of projects for preventing electromagnetic interaction between equipment and between equipment and humans (EMC and EMF), electrostatic discharge (ESD), lightning protection, stray current management (corrosion prevention) and power quality. Before joining Sweco, Mathieu Melenho

rst worked at Alewijnse on marine systems, at Croon Elektrotechniek on infrastructural projects as specialist in EMC and Lightning. At Thales Nederland he was involved as EMC engineer in radar and optical systems for naval vessels and at FEI/Philips Electron Optics (currently Thermo Fisher Scientifi

c) as EMC designer for electron microscopy systems. Mathieu has written a good number of technical papers, including a book on EMC in Dutch, together with Mark van Helvoort. He is member of the Dutch ESD-EMC society and a gifted speaker at seminars.

SMPM彈簧式同軸連接器之設計及電性模擬最佳化

為了解決High Power Connector的問題，作者蔡松穎 這樣論述：

本研究所試驗的同軸連接器形式為SMPM，它具有體積小、高頻寬及高傳輸效率等優點，本研究集合上述優點之後設計一款SMPM彈簧式同軸連接器，以彈簧的做動行程去改變同軸連接器的長度，在彈簧做動的期間保持良好的電氣特性，藉由彈簧行程的改變，使信號能夠在易震動或是經常性改變空間大小的環境下正常傳輸，並以SMP彈簧式同軸連接器進行比較。設計過程中以美國軍方所定義的同軸連接器規範MIL-STD-348為基礎進行設計，制定電氣規格為頻率DC-20GHz及VSWR 1.30 max.，並以Smooth bore的連接形式計算彈簧張力，因此彈簧預壓時的張力為2 LBS min.，另外也設計了彈簧防脫離機構，藉由

此機構去確保彈簧做動時不會因為彈簧張力過大驅使連接器界面兩端分離；設計完成後以CST進行電氣特性模擬，將此機構所能夠達到的電氣特性進行最佳化模擬；模擬完成就進行到零件生產的部分，除了彈簧之外材料皆使用圓棒材，並用Starスター精密株式會社的走心式CNC自動車床生產，彈簧則是使用彈簧線，由CNC彈簧成型機生產；零件生產完成即進入組裝試驗的階段，其主要試驗內容是使用拉力測試機測試彈簧張力及彈簧防脫離機構，最後則是使用向量網路分析儀量測及分析其電氣特性，主要分析項目為靜態測試及動態測試，並和SMP彈簧式同軸連接器進行比較。實驗結果顯示最初所制定的規格是完全符合的，且不管是動態或靜態測試，SMPM的使

用頻率及VSWR都明顯優於SMP彈簧式同軸連接器；由上述結果得知特性阻抗越接近50Ω，VSWR越佳，其原因為阻抗值在50Ω時，傳輸功率最大，反射損耗最小，且頻率越高，特性阻抗對於VSWR的影響越大；另外也得知中心導體的表面粗糙度越小，VSWR越佳，主要因素在於集膚效應的產生，當訊號通過中心導體表面時，表面越光滑，電氣特性會越佳，明顯對於同軸連接器有一定程度的影響。