病院用PHS・無線LAN等のME機器への影響

概要

論文の詳細を見る
We conducted the survey of the electromagnetic interference (EMI) on electronic medical equipment induced by radio communication systems. The EMI by the Japanese Personal Handy-phone System (PHS) and a radio LAN system is observed on 3.7% of electronic medical equipment. The EMI, however, disappeared by keeping the isolation distance greater than about 3 cm. In the case of 800mW amateur radio transmitter, the incidence of various type of interference was observed on 29.6% of electronic medical equipment. The value of 800mW is approximately equal to the maximum burst transmitter output power of the mobile phone. The maximum isolation distance was 45 cm. The incidence of EMI increased logarithmically according to the increase the transmitting power of the system. However electronic medical equipment made within recent 5 years has good immunity against the electromagnetic disturbance, the mobile telephone is not allowed to use inside a hospital, since the immunity of electronic medical equipment is not identical when production years and manufactures are different.
日本医療機器学会の論文
2002-03-01