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A Study of Effective Power Management for Infrafree Variable Message Sign  

Lim, Se-Mi (국민대학교 전자공학과)
Lee, Ji-Hoon (국민대학교 전자공학과)
Park, Jun-Seok (국민대학교 전자공학과)
Kim, Byung-Jong (한국항공대학교 항공교통물류학과)
Kim, Won-Kyu (한국항공대학교 항공교통물류학과)
Son, Seung-Neo (한국지능형교통체계협회 연구기획부)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.10, no.6, 2011 , pp. 53-62 More about this Journal
Abstract
Although the demand of Variable Message Sign(VMS) has become pervasive in fulfilling the ITS policy, there are still several unsolved problematic issues. The most critical ones of them are inequality and inefficiency of providing traffic information. This paper proposes the Infra-free Variable Message Sign in order to provide useful informations such as road condition, weather, and traffic of the area, where constructing the infrastructure of communication and power supply is relatively very hard. First of all, the characteristics of infra-free Variable Message Sign are studied and analyzed in deep because of differences between normal Variable Message Sign and Infra-free Variable Message Sign in the configuration and the operating method due to the nature of the Infra-free Variable Message Sign. Futhermore, for effective power management of operating Infra-free Variable Message Sign with limited power acquired through stand-alone PV system, new battery connection structure and dynamically variable power managements for the differently shown messages on Variable Message Sign are proposed. The proposed structure in this paper can be applied to not only power management for Infra-free Variable Message Sign but also power management for the various applications using parallel connection battery system.
Keywords
Stand-alone PV system; Infrafree VMS(Variable Message Sign); VMS(Variable Message Sign); BMS(Battery Management System); Power Management;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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