- 學位論文
無線射頻辨識系統RFID電磁波對醫療儀器的影響評估
Evaluation on Electromagnetic Interference of Medical Equipments by Radio Frequency Identification Systems
摘要
近年來由於電子設備的進步及大量的使用，雖然增加了生活的便利性，但也使得電磁波充斥在許多的工作環境中，尤其在醫院的工作環境中，有許多精密的儀控電子醫療設備，若醫療設備因電磁干擾而發生停止運作或不正確的動作等不可預期的現象，有可能對病患造成生命上重大的威脅。無線射頻辨識系統RFID(Radio Frequency Identification)在醫療業的應用非常廣泛，但是RFID電磁波干擾(ElectroMagnetic Interference, EMI) 醫療設備的影響過去並未明確地提出，為確保醫療品質及安全，本研究將量測RFID電磁波對醫療儀器干擾之情況，並提出因應之對策。實驗結果總共量測93 台醫療儀器,有31台會受到UHF RFID系統（被動式 925 MHz)之電磁波干擾，受干擾的距離為0.1cm~200cm，電場強度為14.37V/m~2.11 V/m，根據實驗結果，我們建議未來醫療院所，在開刀房、加護病房、檢查室、一般病房架設RFID（被動式925MHz)系統，Reader/Writer 發射器應距離固定式或移動式醫電設備至少1.5公尺以上，且電場強度不得超過 3 V/m以上。
並列摘要
In recent years, electronic devices have made great progress and they are in widespread use. Although it increases convenience in our daily life, consequently it also makes that many environments are full of electromagnetic waves. Especially in hospitals, there are a lot of precise life-support system and electronic medical equipments used on patients. We think that some unexpected things would happen because of the interference of the electromagnetic waves. For example, medical devices may stop working or some incorrect reactions occur. If any one of them truly happens, it will probably cause a great threat to patients’ lives. RFID (Radio Frequency Identification) is now widely applied to medical treatment, but the influence of EMI (Electromagnetic Interference, EMI) caused by RFID on medical devices is not mentioned clearly. To make sure the quality and the safety of medical treatment, the research we study is to measure the degree of EMI caused by RFID and propose a solution to it. In the experiment, we put total 93 pieces of medical devices under the UHF RFID system (passive 925 MHz ), we found that 31 of them are affected. The affected distance ranged between 0.1cm and 200cm and the electric field intensity ranged between 14.37V/m and 2.11V/m. According to the result, we suggest that in hospitals and other related business institutions, we should set up RFID system (passive 925 MHz) in operating rooms, intensive care rooms, examination rooms, and general wards. The distance from readers/ writers to stationary or portable medical devices should be at least 1.5 m and the electric field intensity cannot exceed 3V/m.