The present invention relates to a digital traffic signal control system. By comprising a master local controller (MLC), slave local controllers (SLCs) between traffic lights, and additional lamp driving modules for switching traffic lights which are respectively allocated to the SLCs, the problem of switch modules for all traffic lights installed on the MLC, leading to waste of space, reduced aesthetic value and frequent breakdowns, can be resolved. The MLC and the respective SLCs are connected via low-voltage cables. Upon being supplied with AC high-voltage power from the outside, the MLC has an active circuit for converting the AC high-voltage power into a DC low-voltage power to supply each cable with DC low-voltage power. Thereby, the overload, which occurs when supplying power to the entire traffic lights with one single power line can be efficiently prevented. Also, since no active circuit is needed on the respective SLCs. Therefore, breakdown of equipment or replacement of the same can be significantly reduced. Moreover, by granting IDs of the SLCs along the progressing direction of automobiles and along the installation order at the crossroad, the efficiency in both management and operation can be increased, according to the present invention.
본 발명은 주제어부(MLC, master local controller) 및 신호등들 사이에 부제어부(SLC, slave local controller)들을 설치하고, 부제어부(SLC)들 각각에는 자신에게 할단? 신호등들을 스위칭 제어하기 위한 램프구동모듈들이 별도로 설치됨으로써 종래에 주제어부 한 곳에 모든 신호등들의 스위치모듈들이 설치되어 불필요한 공간소모가 크고, 미관효율이 떨어지며, 고장이 빈번하게 발생하는 문제점을 해결할 수 있고, 주제어부(MLC) 및 각 부제어부(SLC)가 저전압 케이블로 연결되고, 주제어부(MLC)는 외부로부터 AC 고전압 전원을 공급받으면 공급받은 AC 고전압 전원을 DC 저전압 전원으로 변환하는 능동회로를 포함하여 각 케이블로 DC 저전압 전원을 공급함으로써 하나의 전력선으로 전체 신호등들로 전원을 공급할 때 발생하는 과부하 현상을 효율적으로 방지할 수 있으며, 부제어부들 각각에 능동회로가 설치되지 않아도 되기 때문에 장비고장 및 교체를 현저히 절감시킬 수 있으며, 부제어부(SLC)들의 ID가 차량 진행방향 및 교차로로부터의 설치 순서에 따라 부여되도록 구성됨으로써 관리 및 운용의 효율성을 높일 수 있는 디지털 교통신호 제어시스템에 관한 것이다.
Digital traffic signal control system
디지털 교통신호 제어 시스템
2017-05-19
Patent
Electronic Resource
Korean
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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