抑制雜訊傳導之濾波器設計

本論文為設計研發改進現有使用於電子醫療儀器之濾波器電路，提供一較佳與快速之設計架構，製作具抑制或消除電子醫療儀器於使用時所產生電磁干擾訊號，以及避免遭受到環境中既有存在電磁干擾訊號之濾波器電路，避免電子醫療儀器設備所檢測到的數據資料錯誤或產生誤動作，提高儀器設備使用或檢測上之正確性與可靠度。本論文就電磁干擾雜訊訊號之產生與傳導路徑，以及各種電磁干擾法規要求與量測方式，進行詳細與完整說明，並以既有市售產品所採用之設計方式，進行分析修改，重新設計一個電磁干擾抑制與消除濾波器電路架構，改善以往設計於完成電路設計後，均需長時間反覆進行驗測與電路修正之缺點，此新型濾波器電路架構可避免研發過程中因反覆重工所造成時間損失，大幅縮減研發所需時程，加速產品上市。新型濾波器架構經實驗與數據模擬，實作調測，再針對電路不完善部分進行弁酯蚰翰寣A進行電磁干擾訊號實際量測，於抑制或是消除電磁雜訊部分，除符合各種法規要求外，其時程也符合預期要求，對研發時期解決電子醫療產品電磁干擾問題上，能發揮出最佳效用。

關鍵字

電磁干擾；電子醫療儀器；電磁雜訊；濾波器；法規；量測；傳導

並列摘要

This thesis outlines the design and development of filters applies to medical electronic devices, which leads to a better design and rapid development architecture for the inhibition of electromagnetic interference (EMI). The EMI referred included the device induced and those that existed in our environment. The filters have been constructed with the objective of preventing incorrect data acquisitions and measurements due to the EMI and will increase the reliability and precision of such devices. A comprehensive introduction of the EMI induced noise and their transmission route is revealed along with a thorough analysis and configuration of an existing consumer product. The new method proposed has greatly reduced the time required for research and design resulting from the fact that adjustments to eliminate noise would no longer be necessary after the design is completed. Recurrent corrections avoided would then accelerate the promotion of the newly designed device into the consumer market. The implemented filter undergoes laboratory tests, simulations and functional corrections in order to meet all EMI regulations. The final product not only meets the anticipated results, but also gives designers in the field of medical electronic devices a better solution for EMI reductions.

並列關鍵字

medical electronic devices ； electromagnetic interference (EMI) ； filters ； electromagnetic noise ； transmission ； EMI regulations ； EMI measurement

參考文獻

[1] Kang-Yu Liao,Hsin-Lung Su,Ken-Huang Lin,Wen-Jung Ho”Evaluation of EMI Filter Performance for Uninterruptible Power Systems” IEEE Transactions on electromagnetic compatibility 2001

[2] Sippola M., von Rauner T., Siren H. and Sepponen R., 2000.”The Effect of Printed Circuit Board on Cooling and EMC of Switched Mode Power Supply” Proceedings of the IEEE 31st Annual Power Electronics Specialists Conference (PESC00). Galway, Ireland, 18-23 Vol. 3, pages 1267-1272. 2000

[3] Jean-Luc SCHANEN , Ludovic JOURDAN,James ROUDET “ Layout Optimization to reduce EMI of a Switched Mode Power Supply” session 10-6 : EMC/EMI issues for SMPS IEEE PESC 2002

[4] Liu, D.H.; Jiang, J.G."High Frequency Characteristic Analysis of EMI Filter in Switch Mode Power Supply(SMPS)",Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual , Volume: 4 , 23-27 Pages:2039 – 2043 2002

[5] Silberberg, J.L.;"Achieving Medical Device EMC:The Role of Regulations,Standards,Guidelines and Publications",Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on , Volume: 2 , 13-17 Pages:1298 - 1303 vol.2 2001

國際替代計量

抑制雜訊傳導之濾波器設計

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