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http://dx.doi.org/10.5515/KJKIEES.2011.22.11.1125

Improvement of Electromagnetic Environment Effects in aLift System by Installing a Mobile-Communication Repeater  

Lim, Byung-Chul (Department of Lift Safety Management, Korea Lift College)
Jung, Ki-Bum (E&R Tech)
Chung, Yeon-Choon (Department of Electronics, Seokyeong University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.22, no.11, 2011 , pp. 1125-1132 More about this Journal
Abstract
The purpose of this study is to suggest installation methods of a mobile-communication repeater into a lift system with consideration of EMC. Two approaches, one(Solution 1) is realized with a repeater installed in a lift hoistway and another(Solution 2) installed inside a lift, were proposed. It is confirmed that the Solution 1 is more effective than the Solution 2. And it is suggested that the EIRP of a repeater must be limited to be ${\leq}$-5 dBm by considering electromagnetic immunity level for a lift and safety margin of 20 dB. This limit can provide suitable electromagnetic environment inside a lift with precise power-control mechanism of mobile communication systems. This study could be a good example of Green ICT by improving electromagnetic environment in spite of radio use.
Keywords
Repeater; Lift; EIRP; Power Control; EMC;
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  • Reference
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