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긴급차량 융합형 우선신호 제어 알고리즘 개발

A Fusion Priority Signal Control Algorithm for Emergency Vehicles

  • 이숭봉 (서울대학교 환경대학원 환경계획학과) ;
  • 이진수 (서울대학교 환경대학원 환경계획학과) ;
  • 장재민 (서울대학교 환경대학원 환경계획학과) ;
  • 이영인 (서울대학교 환경대학원 환경계획학과)
  • Lee, Soong-bong (Dept. of Environmental Planning, Graduate School of Environmental Studies, Seoul National University) ;
  • Lee, Jin-soo (Dept. of Environmental Planning, Graduate School of Environmental Studies, Seoul National University) ;
  • Jang, Jae-min (Dept. of Environmental Planning, Graduate School of Environmental Studies, Seoul National University) ;
  • Lee, Young-Ihn (Dept. of Environmental Planning, Graduate School of Environmental Studies, Seoul National University)
  • 투고 : 2018.03.14
  • 심사 : 2018.04.04
  • 발행 : 2018.04.30

초록

본 연구에서는 긴급상황 시 긴급차량의 무정차 통과를 위해 융합형 우선신호 제어 알고리즘을 개발하였다. 융합형 우선신호는 센터제어와 현장제어를 결합한 방법이다. 센터제어는 긴급상황이 접수되면 긴급차량 경로의 각 교차로에 대하여 우선신호를 적용한다. 긴급차량 출발이전에 신호시간을 제어하기 때문에 대기차량을 효과적으로 제거할 수 있다. 하지만, 실시간 긴급차량의 소통정보(속도, 위치)를 사용하지 않기 때문에, 센터제어 시 예측한 긴급차량의 교차로 도착시각과 실제 도착시각이 차이를 보일 수 있으며, 이런 경우 신호로 인한 지체를 경험할 수 있다. 현장제어는 실시간 긴급차량의 정보를 활용하여 우선신호를 제어하지만, 대기차량 소거시간을 반영할 수 없는 한계가 있다. 본 연구에서는 센터제어와 현장제어의 단점을 보완하고, 장점을 극대화하기 위하여 융합형(센터+현장) 제어 알고리즘을 제안하였다. 융합형 제어 알고리즘은 긴급상황 시 긴급차량의 지체를 감소시킬 수 있을 것으로 기대한다.

This study develops a fusion priority signal control algorithm to pass without delay in emergency events. Fusion priority signal control is method combined center control with local control. The center control method applies signal times for each signalized intersection on the emergency vehicle's route when an emergency call is received. As signals are controlled before the emergency vehicle leaves for its destination, it is possible to clear the queues at each intersection more effectively. However, since the traffic information (speed, position) of the real-time emergency vehicle is not used, the intersection arrival time predicted by center control and actual arrival time of the emergency vehicle may be different from each other. In the case, it is possible to experience a delay caused by the signal. Local control method operate priority signal use the real-time information of EV, but there is a limitation that queue elimination time can not be reflected. In this study, fusion(center+local) control algorithm is proposed to compensate the disadvantages of center and local control also maximizing its advantages. Proposed algorithm is expected to decrease delay time of EV in emergency situation.

키워드

참고문헌

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피인용 문헌

  1. 중앙제어방식 긴급자동차 우선신호 현장적용성 분석 vol.18, pp.6, 2018, https://doi.org/10.12815/kits.2019.18.6.137