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京沈高速公路(北京段)全长39.8km,沿线设置一个收费主站和五个匝道收费站,以及服务区和大型停车场,管理中心设在收费主站,养护中心和救援中心设在服务区。根据规划,即将兴建的北京公路二环与京沈高速公路在服务处交汇,并在此设置北京二环的东部管理中心。 京沈高速公路(北京段)通信系统的功能要求:1)收费系统以10M以太网形式自管理中心延伸至各个匝道收费站;2)RS422型控制信号自管理中心传送至各个匝道站,同时通过各个匝道站的BS422接口将道路监控系统采集的监控信息传送至管理中心和服务区;3)每一匝道站有3～4路图像实时
The Beijing-Shenyang Expressway (Beijing section) covers a total length of 39.8km with a toll fee collection station and five on-ramp toll stations along with service areas and large parking lots. The management center is located at the charge master station and the maintenance center and rescue center are located at the service Area. According to the plan, the upcoming construction of the Second Ring Road in Beijing and the Beijing-Shenyang Expressway meet at the service office, setting up the eastern management center of Beijing Second Ring Expressway here. The functional requirements of the Beijing-Shenyang Expressway (Beijing section) communication system are as follows: 1) The toll collection system extends from the management center to each ramp toll booth in the form of 10M Ethernet; 2) The RS422 control signal is transmitted from the management center to each ramp station, The BS422 interface of each ramp station transmits monitoring information collected by the road monitoring system to the management center and service area. 3) Each ramp station has 3 ~ 4 road images in real time