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http://dx.doi.org/10.12815/kits.2012.11.5.001

A Study on Standardization of UPS (Uninterruptible Power Supply) for Traffic Signal Controller  

Ko, Kwang-Yong (도로교통공단 교통공학연구실)
Lee, Choul-Ki (아주대학교 건설교통학부)
Kim, Min-Sung (도로교통공단 교통공학연구실)
Heo, Nak-Won (도로교통공단 교통공학연구실)
Jeong, Jun-Ha (도로교통공단 교통공학연구실)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.11, no.5, 2012 , pp. 1-6 More about this Journal
Abstract
Unlike the past, modern urban intersections have dramatic growth in size and utilizations. As a result, continual traffic signal control is essential. Hence the individual or regional electrical blackout may bring about uncontrollable traffic congestion. Late summer of 2011 a regional blackout brought about traffic nightmare not including time and revenue loss associated with this disaster. Due to this disaster our national police agency and other government agencies are in process of introducing an UPS (uninterruptible power supply) system into essential intersections. This study estimates the power consumption necessary to sustain at least 2 continuous hours for a standard four-legged intersection. Prototype was studied using these standards. The field experiment of prototype showed positive results and was able to meet standard guidelines set forth. Prototype tested was able to meet standards in medium to large capacity of traffic size.
Keywords
Traffic Signal System; Uninterruptible Power Supply; Material Standards; Traffic Device; Battery Back-up;
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  • Reference
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