WO2020134561A1 - 一种展示区域绿波协调控制效果的空间时距图的作图方法 - Google Patents
一种展示区域绿波协调控制效果的空间时距图的作图方法 Download PDFInfo
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- WO2020134561A1 WO2020134561A1 PCT/CN2019/114909 CN2019114909W WO2020134561A1 WO 2020134561 A1 WO2020134561 A1 WO 2020134561A1 CN 2019114909 W CN2019114909 W CN 2019114909W WO 2020134561 A1 WO2020134561 A1 WO 2020134561A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3667—Display of a road map
- G01C21/367—Details, e.g. road map scale, orientation, zooming, illumination, level of detail, scrolling of road map or positioning of current position marker
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/081—Plural intersections under common control
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3605—Destination input or retrieval
- G01C21/3614—Destination input or retrieval through interaction with a road map, e.g. selecting a POI icon on a road map
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3667—Display of a road map
- G01C21/3676—Overview of the route on the road map
Definitions
- the present invention relates to the technical field of traffic signal control, and more specifically, to a method for drawing a space time-distance map that shows the effect of regional green wave coordinated control.
- the green wave coordinated control design will try to make the traffic flow in the coordinated direction continuously pass through multiple downstream signalized intersections without stopping, which can effectively reduce the average delay time of the target traffic flow and the number of stops, improve the smoothness of the traffic flow, and reduce the traffic at the intersection
- the occurrence of an accident is a control method preferred by urban traffic control systems under unsaturated traffic conditions, and related research results have been widely used in many cities in China.
- time-distance graph time-distance graph
- the time-distance map is a plan that expresses the relationship between the distance of coordinated intersections and the timing of signals, and reflects the movement of vehicles under coordinated control. It plays an important role in the design of coordinated control of trunk road green waves.
- the regional traffic signal coordination control technology has attracted more and more attention from designers. It is necessary to establish a performance method that can show the overall advantages and disadvantages of regional traffic signal coordination control.
- the present invention will provide a method for drawing a spatial time-distance graph showing the effect of regional green wave coordinated control.
- the spatial time-distance graph By drawing the spatial time-distance graph, the overall green wave coordinated control effect of the regional traffic signal coordinated control scheme is fully displayed.
- the invention provides a method for drawing a spatial time-distance graph showing the effect of the coordinated control of the regional green wave.
- the overall green wave coordinated control effect of the regional traffic signal coordinated control scheme is fully displayed to facilitate the observation of the traffic signal coordinated control of the entire area.
- a method for drawing a spatial time-distance graph showing the effect of regional green wave coordinated control is as follows:
- S1 Select an intersection in the area as the reference intersection, establish the coordinate system of the space-time map and determine its position in the coordinates of the space-time map;
- S3 Calculate the green light start time, center time, and end time of each signal phase of the intersection, and combine the prisms surrounded by the cross section of each entrance stop line at the intersection to generate a time prism for each intersection signal timing scheme; the signal configuration
- the time prism is a carrier that reflects the signal timing scheme.
- Each face of the prism represents each entrance direction of the intersection.
- the height of the color block filled in each face represents the phase duration of the coordinate phase of the entrance direction. Drawing the entire space time diagram will play a fundamental role.
- the reference intersection is used as the origin, the X-axis forward from west to east, the Y-axis forward from north to south, and the Z-axis time are selected to establish a coordinate system of the space-time map.
- step S3 the green light start time, center time, and end time of each signal phase of the intersection are calculated, where the calculation formula is as follows:
- i represents the serial number of the planned coordinated route where the intersection is located
- j represents the intersection number of the planned intersection on the planned coordinated route, defining the direction of the intersection number from small to large as the upstream direction of the coordinated line, and the intersection number from large to small
- the direction is the downstream direction of the coordinated line
- Respectively represent the start time, center time and end time of the green light of the intersection phase I (i, j) signal phase k; Green time indicating the phase k of the intersection I (i, j) signal.
- each section of the entrance parking line at the intersection is enclosed into a prism, and each section of the entrance parking line corresponds to the side of the prism at the intersection signal timing scheme time; on each side of the prism at the intersection signal timing scheme time , Mark the corresponding time period of the coordination phase green light with the specified color block to form a time prism containing the information of the intersection signal timing scheme.
- step S4 the width of the green wave band in the upstream direction of the coordination line i is determined, and the green wave band is located.
- S403 Obtain the green band width from the first intersection I (i,1) to the last intersection I (i,n) of the coordinated line i in the upstream direction According to the green wave band at the beginning of the phase U of the intersection I (i, n) signal With the end moment Complete the positioning of the green wave band in the upstream direction.
- step S5 the width of the green wave band in the downlink direction of the coordination line i is determined, and the green wave band is located.
- L (i,j+1 ⁇ j) indicates the intersection I (i,j+1) to the intersection I (i,j)
- v (i,j+1 ⁇ j) represents the travel speed of the intersection I (i,j+1) to the intersection I (i,j) ;
- B (i,n ⁇ j) represents the coordinated route i Green band width from intersection I (i,n) to intersection I (i,j) ;
- S503 Obtain the green band width from the first intersection I (i,n) to the last intersection I (i,1) of the coordinated line i in the downstream direction According to the green wave band at the beginning of the phase D of the intersection I (i,1) signal With the end moment Complete the positioning of the green wave band in the downstream direction.
- the present invention can reflect the movement status of multiple coordinated vehicle flows, and comprehensively demonstrate the overall green wave coordinated control effect of the regional traffic signal coordinated control scheme.
- the present invention realizes a three-dimensional description of the spatiotemporal relationship between intersections in the road network by establishing a time prism of each intersection signal timing scheme, which is helpful to establish an optimized model of road network coordinated control.
- the present invention obtains the upward and downward green wave bands of the coordinated line to form the completed coordinated line, so that the overall control effect of the coordinated path chain and the coordinated path set in the display area can be realized, and the visual visualization of the coordinated control effect of the road network traffic signal can be realized .
- FIG. 1 is a road network structure and intersection location diagram according to an embodiment of the present invention.
- FIG. 2 is a green time statistic diagram of each intersection phase in this embodiment.
- FIG. 3 is a statistical diagram of the green light start time and the green light end time of each intersection phase in this embodiment.
- FIG. 5 is a three-dimensional coordinate of the green light starting point of each intersection phase in this embodiment.
- FIG. 7 is a time prism of the signal timing scheme of this embodiment.
- FIG. 8 is a result of calculating the bidirectional green wave bandwidth of each trunk line in this embodiment.
- FIG. 9 is a three-dimensional coordinate of the starting point of the green wave band at each entrance of each intersection in this embodiment.
- FIG. 10 is the three-dimensional coordinates of the end points of the green wave bands at the entrances of the intersections of this embodiment.
- FIG. 11 is a space time diagram showing the effect of regional green wave coordinated control in this embodiment.
- FIG. 4 a method for drawing a spatial time-distance graph showing the effect of regional green wave coordinated control.
- the steps of the drawing method are as follows:
- Step S1 In this embodiment, the intersection I 1 is selected as the regional reference intersection; with the regional reference intersection as the origin, the X axis is positive from west to east, the Y axis is positive from north to south, and the time is Z axis , To establish the coordinate system of the space-time map;
- Step S2 According to the relative position of each intersection in the area and the reference intersection, determine its specific position coordinates in the coordinate system of the space-time map, as shown in FIG. 1;
- Step S3 Calculate the green light start time, center time, and end time of each signal phase of the intersection, combined with the prism surrounded by the cross section of each entrance stop line at the intersection to generate a time prism for each intersection signal timing scheme;
- i represents the serial number of the planned coordinated route where the intersection is located
- j represents the intersection number of the planned intersection on the planned coordinated route, defining the direction of the intersection number from small to large as the upstream direction of the coordinated line, and the intersection number from large to small
- the direction is the downstream direction of the coordinated line
- Respectively represent the start time, center time and end time of the green light of the intersection phase I (i, j) signal phase k; Green time indicating the phase k of the intersection I (i, j) signal.
- each entrance parking line at the intersection is enclosed into a prism, and each cross section of the entrance parking line corresponds to the side of the time prism of the intersection signal timing scheme; on each side of the time prism of the intersection signal timing scheme , Mark the corresponding time period of the coordination phase green light with the specified color block to form a time prism containing the information of the intersection signal timing scheme.
- the time prism of each intersection signal timing scheme constructed is shown in FIG. 7.
- the time prism of the signal timing scheme is a carrier reflecting the signal timing scheme.
- Each face of the prism represents the entrance direction of the intersection, and the height of the color block filled in each face represents the phase of the coordinate phase of the entrance direction. Duration, which will play a fundamental role in drawing the entire space time map.
- Step S4 Calculate the width of the green wave band in the upstream direction of the coordination line i to complete the green wave band positioning in the upstream direction.
- the specific steps are as follows:
- S403 Obtain the green band width from the first intersection I (i,1) to the last intersection I (i,n) of the coordinated line i in the upstream direction According to the green wave band at the beginning of the phase U of the intersection I (i, n) signal With the end moment Complete the positioning of the green wave band in the upstream direction.
- Step S5 Calculate the width of the green wave band in the downstream direction of the coordination line i to complete the positioning of the green wave band in the downstream direction.
- the specific steps are as follows:
- the start time and end time of phase D The start time and end time of the green light indicating the phase D of the intersection I (i, n) signal
- L (i,n ⁇ n-1) means the intersection I (i,n) to the intersection I (i,n- 1)
- the distance; v (i,n ⁇ n-1) represents the travel speed of intersection I (i,n) to intersection I (i,n-1) ;
- B (i,n ⁇ n-1) represents Coordinate the width of the green wave band from the first intersection I (i,n) to the second intersection I (i,n-1) of line i;
- S503 Obtain the green band width from the first intersection I (i,n) to the last intersection I (i,1) of the coordinated line i in the downstream direction According to the green wave band at the beginning of the phase D of the intersection I (i,1) signal With the end moment Complete the positioning of the green wave band in the downstream direction.
- Step S6 Calculate the starting time of the green wave band of the upstream green wave band of the coordination line i at the intersection I (i, j) With the end moment
- the calculation formula is as follows, where 1 ⁇ j ⁇ n;
- Step S7 Calculate the starting time of the green wave band of the downstream green wave band of the coordinated line i at the intersection I (i, j) With the end moment
- the calculation formula is as follows, where 1 ⁇ j ⁇ n;
- step S4 and step S5 the three-dimensional coordinates of the starting point of the green wave band in each entrance direction of each intersection calculated according to steps S4 and S5 are shown in FIG. 9.
- step S4 and step S5 the three-dimensional coordinates of the green wave end point of each intersection in each entrance direction are calculated as shown in FIG. 10.
- this embodiment finally obtains a spatial time-distance graph showing the effect of regional green wave coordinated control, as shown in FIG. 11.
- This embodiment implements a three-dimensional description of the spatial-temporal relationship between intersections in the road network, which is helpful to establish an optimized model for road network coordinated control.
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Abstract
一种展示区域绿波协调控制效果的空间时距图的作图方法,其作图方法如下:建立空间时距图坐标系;确定每个交叉口在空间时距图坐标系中的具体位置坐标;生成各个交叉口信号配时方案时间棱柱体;确定各条干道的绿波带宽;生成交叉口之间行驶轨迹线,作出各条干道的绿波带,完成作图。可以反映多股协调车流的运动状况,全面展示区域交通信号协调控制方案的整体绿波协调控制效果,并通过建立各个交叉口信号配时方案时间棱柱体,实现了对路网中交叉口之间时空关系的三维立体描述,有助于建立路网协调控制优化模型。适用于交通信号控制领域。
Description
本发明涉及交通信号控制技术领域,更具体的,涉及一种展示区域绿波协调控制效果的空间时距图的作图方法。
绿波协调控制设计将尽量使得协调方向的车流能够连续不停车地通过多个下游信号交叉口,从而可以有效减少目标车流的平均延误时间与停车次数,提高车流行驶的平滑性,减少交叉口交通事故发生,是未饱和交通状态下城市交通控制系统优先选用的一种控制手段,相关研究成果已在国内诸多城市得以广泛应用。
目前衡量一套绿波协调控制方案的实施效果主要是利用时间-距离图(简称时距图)来展示各条协调线路的绿波带宽大小。时距图是一个表达协调交叉口距离与信号配时关系,并反映出受协调控制车流运动状况的平面图,在干道绿波协调控制设计中发挥了重要作用。然而随着城市交通系统的发展,区域交通信号协调控制技术方法越来越受到设计人员的关注,需要建立一种能够整体展示区域交通信号协调控制效果优劣的表现方式。
对此,本发明将给出一种展示区域绿波协调控制效果的空间时距图的作图方法,通过绘制空间时距图,全面展示区域交通信号协调控制方案的整体绿波协调控制效果。
发明内容
本发明为了方便能整体展示区域交通信号协调控制效果的优劣,方便对整个区域交通信号协调的观察,提供了一种展示区域绿波协调控制效果的空间时距图的作图方法,其能全面展示区域交通信号协调控制方案的整体绿波协调控制效果,方便观察整个区域的交通信号协调控制。
为实现上述本发明目的,采用的技术方案如下:一种展示区域绿波协调控制效果的空间时距图的作图方法,所述该作图方法步骤如下:
S1:选择区域中一个交叉口作为基准交叉口,建立空间时距图坐标系,并确定其在空间时距图坐标中的位置;
S2:根据区域中每个交叉口与基准交叉口的相对位置,确定区域中每个交叉口在空间时距图坐标系中的具体位置坐标;
S3:计算交叉口各个信号相位的绿灯起点时刻、中心点时刻、终点时刻,结合交叉口各 进口停车线断面围成的棱柱体,生成各个交叉口信号配时方案时间棱柱体;所述信号配时方案时间棱柱体是反映信号配时方案的载体,棱柱体的每一个面分别表示交叉口的各个进口方向,每一个面所填充的色块高度表示该进口方向协调相位的相位时长,这对于绘制整个空间时距图将起到一个基础的作用。
S4:计算协调线路i的第1个交叉口I
(i,1)至第n个交叉口I
(i,n)的绿波带宽度;完成协调线路i上行方向的绿波带定位;
S5:计算协调线路i的第n个交叉口I
(i,n)至第1个交叉口I
(i,1)的绿波带宽度;完成协调线路i下行方向的绿波带定位;
连接各个交叉口上行绿波带的起点时刻,得到协调线路i上行绿波带起始轨迹线,连接各个交叉口上行绿波带的终点时刻,得到协调线路i上行绿波带终止轨迹线,确定上行绿波带起始轨迹线、上行绿波带终止轨迹线后得到协调线路i的上行绿波带;
连接各个交叉口下行绿波带的起点时刻,得到协调线路i下行绿波带起始轨迹线,连接各个交叉口下行绿波带的终点时刻,得到协调线路i下行绿波带终止轨迹线,确定下行绿波带起始轨迹线、下行绿波带终止轨迹线后得到协调线路i的下行绿波带,完成作图。
优选地,步骤S1,以基准交叉口作为原点,选取由西往东为X轴正向、由北往南为Y轴正向、时间为Z轴,建立空间时距图坐标系。
优选地,步骤S3,计算交叉口各个信号相位的绿灯起点时刻、中心点时刻、终点时刻,其中计算公式如下:
其中:i表示交叉口所在的拟协调线路序号;j表示交叉口在拟协调线路的交叉口编号,定义交叉口编号由小到大的方向为协调线路上行方向,交叉口编号由大到小的方向为协调线路下行方向;
分别表示交叉口I
(i,j)信号相位k的绿灯起点时刻、中心点时刻、终点时刻;
表示交叉口I
(i,j)信号相位k的绿灯时间。
进一步地,将交叉口各进口停车线断面围成一个棱柱体,各进口停车线断面对应为交叉口信号配时方案时间棱柱体的侧面;在交叉口信号配时方案时间棱柱体的各个侧面上,将所对应的协调相位绿灯时间段用指定色块标出,形成一个包含交叉口信号配时方案信息的时间棱柱体。
优选地,步骤S4,确定协调线路i上行方向的绿波带宽度,对绿波带进行定位,具体步骤如下:
S401:计算协调线路i上行方向的第1个交叉口I
(i,1)至第2个交叉口I
(i,2)的绿波带宽度;其计算公式如下:
其中:
与
分别表示在协调线路i上行方向上第1个交叉口I
(i,1)至第2个交叉口I
(i,2)的绿波带在交叉口I
(i,2)信号相位U的起点时刻与终点时刻;
表示交叉口I
(i,1)信号相位U的绿灯起点时刻、终点时刻;
表示交叉口I
(i,2)信号相位U的绿灯起点时刻、终点时刻;L
(i,1→2)表示交叉口I
(i,1)至交叉口I
(i,2)的距离;v
(i,1→2)表示交叉口I
(i,1)至交叉口I
(i,2)的行驶速度;B
(i,1→2)表示协调线路i的第1个交叉口I
(i,1)至第2个交叉口I
(i,2)的绿波带宽度;
S402:计算协调线路i上行方向的第1个交叉口I
(i,1)至第j个交叉口I
(i,j)的绿波带宽度; 其计算公式如下:
其中:
分别表示在协调线路i上行方向上第1个交叉口I
(i,1)至第j个交叉口I
(i,j)的绿波带在交叉口I
(i,j)信号相位U的起点时刻与终点时刻;
表示交叉口I
(i,j)信号相位U的绿灯起点时刻、终点时刻;L
(i,j-1→j)表示交叉口I
(i,j-1)至交叉口I
(i,j)的距离;v
(i,j-1→j)表示交叉口I
(i,j-1)至交叉口I
(i,j)的行驶速度;B
(i,1→j)表示协调线路i的第1个交叉口I
(i,1)至第j个交叉口I
(i,j)的绿波带宽度;
优选地,步骤S5,确定协调线路i下行方向的绿波带宽度,对绿波带进行定位,具体步骤如下:
S501:计算协调线路i下行方向的第1个交叉口I
(i,n)至第2个交叉口I
(i,n-1)的绿波带宽度;其计算公式如下:
其中:
与
分别表示在协调线路i下行方向上第1个交叉口I
(i,n)至第2个交 叉口I
(i,n-1)的绿波带在交叉口I
(i,n-1)信号相位D的起点时刻与终点时刻;
表示交叉口I
(i,n)信号相位D的绿灯起点时刻、终点时刻;
表示交叉口I
(i,n-1)信号相位D的绿灯起点时刻、终点时刻;L
(i,n→n-1)表示交叉口I
(i,n)至交叉口I
(i,n-1)的距离;v
(i,n→n-1)表示交叉口I
(i,n)至交叉口I
(i,n-1)的行驶速度;B
(i,n→n-1)表示协调线路i的第1个交叉口I
(i,n)至第2个交叉口I
(i,n-1)的绿波带宽度;
S502:计算协调线路i下行方向的交叉口I
(i,n)至交叉口I
(i,j)的绿波带宽度;其计算公式如下:
其中:
分别表示在协调线路i下行方向上交叉口I
(i,n)至交叉口I
(i,j)的绿波带在交叉口I
(i,j)信号相位D的起点时刻与终点时刻;
表示交叉口I
(i,j)信号相位D的绿灯起点时刻、终点时刻;L
(i,j+1→j)表示交叉口I
(i,j+1)至交叉口I
(i,j)的距离;v
(i,j+1→j)表示交叉口I
(i,j+1)至交叉口I
(i,j)的行驶速度;B
(i,n→j)表示协调线路i的交叉口I
(i,n)至交叉口I
(i,j)的绿波带宽度;
本发明的有益效果如下:
1)本发明可以反映多股协调车流的运动状况,全面展示区域交通信号协调控制方案的整体绿波协调控制效果。
2)本发明通过建立各个交叉口信号配时方案时间棱柱体,实现了对路网中交叉口之间时空关系的三维立体描述,有助于建立路网协调控制优化模型。
3)本发明得到协调线路的上行、下行绿波带,构成完成的协调线路,从而可以实现展示区域内协调路径链与协调路径集的整体控制效果,实现路网交通信号协调控制效果的直观可视化。
图1是本发明实施例的路网结构与交叉口位置图。
图2是本实施例的各交叉口相位的绿灯时间统计图。
图3是本实施例的各交叉口相位的绿灯起点时刻和绿灯终点时刻统计图。
图4是本发明的步骤流程图。
图5是本实施例的各交叉口相位的绿灯起点三维坐标。
图6是本实施例的各交叉口相位的绿灯终点三维坐标。
图7是本实施例的信号配时方案时间棱柱体。
图8是本实施例计算得到各条干线的双向绿波带宽结果。
图9是本实施例各交叉口在各个进口方向上的绿波带起点三维坐标。
图10是本实施例各交叉口在各个进口方向上的绿波带终点三维坐标。
图11是本实施例的展示区域绿波协调控制效果的空间时距图。
下面结合附图和具体实施方式对本发明做详细描述。
实施例1
已知某个区域路网结构与交叉口位置如图1所示,公共信号周期为90s,各交叉口均采用进口单独放行方式,各交叉口相位的绿灯时间如图2所示,各交叉口相位的绿灯起点时刻和绿灯终点时刻如图3所示,各路段的绿波设计行驶速度均为14m/s。
如图4所示,一种展示区域绿波协调控制效果的空间时距图的作图方法,所述该作图方法步骤如下:
步骤S1:本实施例选取交叉口I
1作为区域基准交叉口;以区域基准交叉口作为原点,选取由西往东为X轴正向、由北往南为Y轴正向、时间为Z轴,建立空间时距图坐标系;
步骤S2:根据区域中每个交叉口与基准交叉口的相对位置,确定其在空间时距图坐标系中的具体位置坐标,如图1所示;
步骤S3:计算交叉口各个信号相位的绿灯起点时刻、中心点时刻、终点时刻,结合交叉口各进口停车线断面围成的棱柱体,生成各个交叉口信号配时方案时间棱柱体;
其中交叉口各个信号相位的绿灯起点时刻、中心点时刻、终点时刻的计算公式如下:
其中:i表示交叉口所在的拟协调线路序号;j表示交叉口在拟协调线路的交叉口编号,定义交叉口编号由小到大的方向为协调线路上行方向,交叉口编号由大到小的方向为协调线路下行方向;
分别表示交叉口I
(i,j)信号相位k的绿灯起点时刻、中心点时刻、终点时刻;
表示交叉口I
(i,j)信号相位k的绿灯时间。
对于区域内各交叉口按照其所在协调线路和所处位置编号需进行进一步定义,例如,对 于南北向协调线路R
1上的交叉口I
1、I
4、I
7,可再定义为交叉口I
(1,1)、I
(1,2)、I
(1,3),对于南北向协调线路R
2上的交叉口I
2、I
5、I
8,可再定义为交叉口I
(2,1)、I
(2,2)、I
(2,3),对于南北向协调线路R
3上的交叉口I
3、I
6、I
9,可再定义为交叉口I
(3,1)、I
(3,2)、I
(3,3),对于东西向协调线路R
4上的交叉口I
1、I
2、I
3,可再定义为交叉口I
(4,1)、I
(4,2)、I
(4,3),对于东西向协调线路R
5上的交叉口I
4、I
5、I
6,可再定义为交叉口I
(5,1)、I
(5,2)、I
(5,3),对于东西向协调线路R
6上的交叉口I
7、I
8、I
9,可再定义为交叉口I
(6,1)、I
(6,2)、I
(6,3)。
本实施例将交叉口各进口停车线断面围成一个棱柱体,各进口停车线断面对应为交叉口信号配时方案时间棱柱体的侧面;在交叉口信号配时方案时间棱柱体的各个侧面上,将所对应的协调相位绿灯时间段用指定色块标出,形成一个包含交叉口信号配时方案信息的时间棱柱体。
根据各交叉口在空间时距图坐标系中的具体位置坐标和图3所示的各交叉口相位绿灯起点时刻和绿灯终点时刻,确定各交叉口的相位绿灯起点和终点三维坐标,分别如图5、图6所示。根据步骤S3,构建的各个交叉口信号配时方案时间棱柱体,如图7所示。所述信号配时方案时间棱柱体是反映信号配时方案的载体,棱柱体的每一个面分别表示交叉口的各个进口方向,每一个面所填充的色块高度表示该进口方向协调相位的相位时长,这对于绘制整个空间时距图将起到一个基础的作用。
步骤S4:计算协调线路i上行方向的绿波带宽度,完成上行方向的绿波带定位,具体步骤如下:
首先计算第1个交叉口至第2个交叉口的绿波带宽及其起点和终点,是为后续计算第1个交叉口至第3个交叉口、第1个交叉口至第4个交叉口、直至第1个交叉口至第n个交叉口的整条干道绿波带宽做准备。
S401:计算协调线路i上行方向的第1个交叉口I
(i,1)至第2个交叉口I
(i,2)的绿波带宽度;其计算公式如下:
其中:
与
分别表示在协调线路i上行方向上第1个交叉口I
(i,1)至第2个交叉口I
(i,2)的绿波带在交叉口I
(i,2)信号相位U的起点时刻与终点时刻;
表示交叉口I
(i,1)信号相位U的绿灯起点时刻、终点时刻;
表示交叉口I
(i,2)信号相位U的绿灯起点时刻、终点时刻;L
(i,1→2)表示交叉口I
(i,1)至交叉口I
(i,2)的距离;v
(i,1→2)表示交叉口I
(i,1)至交叉口I
(i,2)的行驶速度;B
(i,1→2)表示协调线路i的第1个交叉口I
(i,1)至第2个交叉口I
(i,2)的绿波带宽度;
S402:计算协调线路i上行方向的第1个交叉口I
(i,1)至第j个交叉口I
(i,j)的绿波带宽度;其计算公式如下:
其中:
分别表示在协调线路i上行方向上第1个交叉口I
(i,1)至第j个交叉口I
(i,j)的绿波带在交叉口I
(i,j)信号相位U的起点时刻与终点时刻;
表示交叉口I
(i,j)信号相位U的绿灯起点时刻、终点时刻;L
(i,j-1→j)表示交叉口I
(i,j-1)至交叉口I
(i,j)的距离;v
(i,j-1→j)表示交叉口I
(i,j-1)至交叉口I
(i,j)的行驶速度;B
(i,1→j)表示协调线路i的第1个交叉口I
(i,1)至第j个交叉口I
(i,j)的绿波带宽度;
步骤S5:计算协调线路i下行方向的绿波带宽度,完成下行方向的绿波带定位,具体步骤如下:
S501:计算协调线路i下行方向的第1个交叉口I
(i,n)至第2个交叉口I
(i,n-1)的绿波带宽 度;其计算公式如下:
其中:
分别表示在协调线路i下行方向上第1个交叉口I
(i,n)至第2个交叉口I
(i,n-1)的绿波带在交叉口I
(i,n-1)信号相位D的起点时刻与终点时刻;
表示交叉口I
(i,n)信号相位D的绿灯起点时刻、终点时刻;
表示交叉口I
(i,n-1)信号相位D的绿灯起点时刻、终点时刻;L
(i,n→n-1)表示交叉口I
(i,n)至交叉口I
(i,n-1)的距离;v
(i,n→n-1)表示交叉口I
(i,n)至交叉口I
(i,n-1)的行驶速度;B
(i,n→n-1)表示协调线路i的第1个交叉口I
(i,n)至第2个交叉口I
(i,n-1)的绿波带宽度;
S502:计算协调线路i下行方向的交叉口I
(i,n)至交叉口I
(i,j)的绿波带宽度;其计算公式如下:
其中:
与
分别表示在协调线路i下行方向上交叉口I
(i,n)至交叉口I
(i,j)的绿波带在交叉口I
(i,j)信号相位D的起点时刻与终点时刻;
表示交叉口I
(i,j)信号相位D的绿灯起点时刻、终点时刻;L
(i,j+1→j)表示交叉口I
(i,j+1)至交叉口I
(i,j)的距离;v
(i,j+1→j)表示交叉口I
(i,j+1)至交叉口I
(i,j)的行驶速度;B
(i,n→j)表示协调线路i的交叉口I
(i,n)至交叉口I
(i,j)的绿波带宽度;
本实施例根据步骤S4、步骤S5计算得到各条干道的绿波带宽结果如图8所示。
连接各个交叉口上行绿波带的起点时刻,得到协调线路i上行绿波带起始轨迹线,连接各个交叉口上行绿波带的终点时刻,得到协调线路i上行绿波带终止轨迹线,确定上行绿波带起始轨迹线、上行绿波带终止轨迹线后得到协调线路i的上行绿波带。
连接各个交叉口下行绿波带的起点时刻,得到协调线路i下行绿波带起始轨迹线,连接各个交叉口下行绿波带的终点时刻,得到协调线路i下行绿波带终止轨迹线,确定下行绿波带起始轨迹线、下行绿波带终止轨迹线后得到协调线路i的下行绿波带。
其中,根据步骤S4、步骤S5计算得到各交叉口在各个进口方向上的绿波带起点三维坐标如图9所示。根据步骤S4、步骤S5计算得到各交叉口在各个进口方向上的绿波带终点三维坐标如图10所示。
根据以上的方法步骤,本实施例最终得到展示区域绿波协调控制效果的空间时距图,如 图11所示。本实施例实现了对路网中交叉口之间时空关系的三维立体描述,有助于建立路网协调控制优化模型。
显然,本发明的上述实施例仅仅是为清楚地说明本发明所作的举例,而并非是对本发明的实施方式的限定。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明权利要求的保护范围之内。
Claims (8)
- 一种展示区域绿波协调控制效果的空间时距图的作图方法,其特征在于:所述该作图方法步骤如下:S1:选择区域中一个交叉口作为基准交叉口,建立空间时距图坐标系,并确定其在空间时距图坐标中的位置;S2:根据区域中每个交叉口与基准交叉口的相对位置,确定区域中每个交叉口在空间时距图坐标系中的具体位置坐标;S3:计算交叉口各个信号相位的绿灯起点时刻、中心点时刻、终点时刻,结合交叉口各进口停车线断面围成的棱柱体,生成各个交叉口信号配时方案时间棱柱体;S4:计算协调线路i的第1个交叉口I (i,1)至第n个交叉口I (i,n)的绿波带宽度;完成协调线路i上行方向的绿波带定位;S5:计算协调线路i的第n个交叉口I (i,n)至第1个交叉口I (i,1)的绿波带宽度;完成协调线路i下行方向的绿波带定位;连接各个交叉口上行绿波带的起点时刻,得到协调线路i上行绿波带起始轨迹线,连接各个交叉口上行绿波带的终点时刻,得到协调线路i上行绿波带终止轨迹线,确定上行绿波带起始轨迹线、上行绿波带终止轨迹线后得到协调线路i的上行绿波带;连接各个交叉口下行绿波带的起点时刻,得到协调线路i下行绿波带起始轨迹线,连接各个交叉口下行绿波带的终点时刻,得到协调线路i下行绿波带终止轨迹线,确定下行绿波带起始轨迹线、下行绿波带终止轨迹线后得到协调线路i的下行绿波带,完成作图。
- 根据权利要求1所述的展示区域绿波协调控制效果的空间时距图的作图方法,其特征在于:步骤S1,以基准交叉口作为原点,选取由西往东为X轴正向、由北往南为Y轴正向、 时间为Z轴,建立空间时距图坐标系。
- 根据权利要求3所述的展示区域绿波协调控制效果的空间时距图的作图方法,其特征在于:将交叉口各进口停车线断面围成一个棱柱体,各进口停车线断面对应为交叉口信号配时方案时间棱柱体的侧面;在交叉口信号配时方案时间棱柱体的各个侧面上,将所对应的协调相位绿灯时间段用指定色块标出,形成一个包含交叉口信号配时方案信息的时间棱柱体。
- 根据权利要求1所述的展示区域绿波协调控制效果的空间时距图的作图方法,其特征在于:步骤S4,计算协调线路i上行方向的绿波带宽度,对绿波带进行定位,具体步骤如下:S401:计算协调线路i上行方向的第1个交叉口I (i,1)至第2个交叉口I (i,2)的绿波带宽度;其计算公式如下:其中: 与 分别表示在协调线路i上行方向上第1个交叉口I (i,1)至第2个交叉口I (i,2)的绿波带在交叉口I (i,2)信号相位U的起点时刻与终点时刻; 表示交叉口I (i,1)信号相位U的绿灯起点时刻、终点时刻; 表示交叉口I (i,2)信号相位U的绿灯起点时刻、终点时刻;L (i,1→2)表示交叉口I (i,1)至交叉口I (i,2)的距离;v (i,1→2)表示交叉口I (i,1)至交叉口I (i,2)的行驶速度;B (i,1→2)表示协调线路i的第1个交叉口I (i,1)至第2个交叉口I (i,2)的绿波带宽度;S402:计算协调线路i上行方向的第1个交叉口I (i,1)至第j个交叉口I (i,j)的绿波带宽度;其计算公式如下:其中: 与 分别表示在协调线路i上行方向上第1个交叉口I (i,1)至第j个交叉口I (i,j)的绿波带在交叉口I (i,j)信号相位U的起点时刻与终点时刻; 表示交叉口I (i,j)信号相位U的绿灯起点时刻、终点时刻;L (i,j-1→j)表示交叉口I (i,j-1)至交叉口I (i,j)的距离;v (i,j-1→j)表示交叉口I (i,j-1)至交叉口I (i,j)的行驶速度;B (i,1→j)表示协调线路i的第1个交叉口I (i,1)至第j个交叉口I (i,j)的绿波带宽度;
- 根据权利要求1所述的展示区域绿波协调控制效果的空间时距图的作图方法,其特征在于:步骤S5,计算协调线路i下行方向的绿波带宽度,对绿波带进行定位,具体步骤如下:S501:计算协调线路i下行方向的第1个交叉口I (i,n)至第2个交叉口I (i,n-1)的绿波带宽度;其计算公式如下:其中: 与 分别表示在协调线路i下行方向上第1个交叉口I (i,n)至第2个交叉口I (i,n-1)的绿波带在交叉口I (i,n-1)信号相位D的起点时刻与终点时刻; 表示交叉口I (i,n)信号相位D的绿灯起点时刻、终点时刻; 表示交叉口I (i,n-1)信号相位D的绿灯起点时刻、终点时刻;L (i,n→n-1)表示交叉口I (i,n)至交叉口I (i,n-1)的距离;v (i,n→n-1)表示交叉口I (i,n)至交叉口I (i,n-1)的行驶速度;B (i,n→n-1)表示协调线路i的第1个交叉口I (i,n)至第2个交叉口I (i,n-1)的绿波带宽度;S502:计算协调线路i下行方向的交叉口I (i,n)至交叉口I (i,j)的绿波带宽度;其计算公式如下:其中: 与 分别表示在协调线路i下行方向上交叉口I (i,n)至交叉口I (i,j)的绿波带在交叉口I (i,j)信号相位D的起点时刻与终点时刻; 表示交叉口I (i,j)信号相位D的绿灯起点时刻、终点时刻;L (i,j+1→j)表示交叉口I (i,j+1)至交叉口I (i,j)的距离;v (i,j+1→j)表示交叉口I (i,j+1)至交叉口I (i,j)的行驶速度;B (i,n→j)表示协调线路i的交叉口I (i,n)至交叉口I (i,j)的绿波带宽度;
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CN114202939B (zh) * | 2021-11-30 | 2023-03-07 | 浙江亚太机电股份有限公司 | 模仿绿波带的车辆通行速度控制系统 |
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