WO2015051485A1 - 一种公路交叉道口交通信号灯的智能控制方法 - Google Patents
一种公路交叉道口交通信号灯的智能控制方法 Download PDFInfo
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- WO2015051485A1 WO2015051485A1 PCT/CN2013/001568 CN2013001568W WO2015051485A1 WO 2015051485 A1 WO2015051485 A1 WO 2015051485A1 CN 2013001568 W CN2013001568 W CN 2013001568W WO 2015051485 A1 WO2015051485 A1 WO 2015051485A1
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/096—Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase
Definitions
- the invention belongs to the technical field of traffic signal control methods, and particularly relates to an intelligent control method for traffic lights of road intersections.
- Traffic lanes in all directions of a road crossing need to be guided by traffic lights or traffic police.
- the existing traffic signal command technology and method adopts the indication, conversion and delay of three colors of green, yellow and red, and directs the traffic (green), deceleration stop prompt (yellow) and prohibition (red) of the vehicles in the corresponding lane;
- the traffic signal is set in front of the intersection corresponding to the lane driver, and the color indication, delay time and color conversion order of each signal light are fixedly set in the command and control system.
- the crossing lane cut-off line is provided with a detecting device for detecting whether the lane is in violation or detecting the traffic flow.
- This kind of road traffic signal command technology and method has the following shortcomings: 1.
- the actual traffic flow of each lane of the road intersection is changed for different periods, different time periods and other various reasons, and it is impossible to command time with the fixed setting signal. Consistently, it often leads to the waiting, congestion and idle coexistence of the lanes at the intersection, reducing the efficiency of the crossing and wasting the lane resources. 2. Waiting and congestion of the driveway will inevitably consume fuel and energy, cause waste, and increase carbon emissions and pollute the atmosphere. 3. It is easy for the driver to have an anxiety, increase the chance of grabbing the second, and stealing the road, thus causing more traffic accidents.
- the invention patent application with the publication number CN101123041A provides a traffic signal control method for detecting the traffic flow at the exit of the intersection through the traffic flow detector to determine whether the intersection corresponding to the exit is congested. In turn, the signal lights control the lane traffic.
- a traffic signal control method for detecting the traffic flow at the exit of the intersection through the traffic flow detector to determine whether the intersection corresponding to the exit is congested. In turn, the signal lights control the lane traffic.
- Such a party Although the law has a certain degree of relief to the intersection, it can not effectively analyze and judge the actual traffic flow of each lane, which is easy to cause time to waste due to the continuous conversion of red, green and yellow lights at the intersection, especially during traffic peaks or lanes. Complex crossings increase the congestion of the lanes and reduce the efficiency of traffic.
- 101572006A is based on the real-time detection of the road, and the traffic signal light arrow pointing and color conversion of the intersection of the central control system is commanded, and the corresponding lane is commanded to pass, stop or change lanes.
- Direction of travel Although the patent application proposes dynamic analysis and directs the passage of vehicles in each lane, it does not explain what means and means are used to achieve it. Moreover, changing the direction of the lane will also make the driver of the vehicle entering the lane incapable of being in a position, which is prone to lane confusion. And driving illegally.
- an object of the present invention is to provide a technical solution for providing an intelligent control method for traffic lights of road intersections.
- the intelligent control method for a traffic signal light of a road intersection is characterized in that: a lane detection lane segment and a traffic flow detector are set; a traffic signal is set; an information processor analyzes the traffic flow and the traffic signal control;
- the setting of the lane detection lane segment and the traffic flow detector includes: setting a lane segment at a certain distance from the crossing lane of the exit lane in the direction of the crossing into a detection lane segment, and detecting that the lane segment is close to the front end of the intersection to set an exit lane Detecting device, detecting the lane segment away from the rear end of the intersection to set the entrance detector; in the lanes with lanes divided by different driving directions, the detection lane segments are respectively set to detect the lane segments according to the lanes, including multiple sections in the same driving direction Separate lanes; the detection lanes of each lane are adjacent to the front end of the intersection, and the lane detour detectors are respectively arranged, and the lane detection lanes are separated from the rear end of the intersections, and the lane entrance detectors are respectively arranged;
- the instrument and the exit detector are arranged in pairs with the detection lane segment or the lane detection lane segment; the exit detector and the lane detector respectively detect the number of vehicles that drive out and
- the setting of the traffic signal lamp specifically includes: a traffic signal light group is arranged in each exit lane, and a traffic signal light group is disposed in front of the intersection lane corresponding to the driver of the lane vehicle; each signal light is provided with green, yellow and red lights Color convertible rear projection light source; lanes with lanes, at least one signal light with guiding symbols in each driving direction; each group of signal lights can be provided with at least one delay time of display delay, delay time can be It has three colors of green, yellow and red to convert the rear projection light source. The delay time display color can be consistent with the current signal color. If there is no delay time, the last few seconds before the signal color conversion flashes to indicate the conversion delay. ; each signal light is connected to the information processor;
- the information processor analyzes and processes the traffic volume and controls the traffic signal: including an information processor and an information analysis processing program, wherein the information processor uses a suitable computer to process the lane detection data information according to the information analysis processing program;
- the processor input end is connected to each lane traffic flow detector, and the output end is connected to the traffic signal light;
- the information analysis processing program includes the set vehicle average occupancy distance and the intersection travel speed limit speed parameter, the access detection
- the vehicle occupancy distance is divided by the vehicle speed limit speed, that is, the transit time of each vehicle;
- the dynamic calculation rule for detecting the traffic volume of the lane segment includes the cumulative calculation of the number of vehicles in the detected lane segment when the lane is not allowed to pass, and the corresponding real-time increase and decrease of the number of vehicles in the lane detection zone after the lane is allowed to pass;
- the conflicting lanes allow the passage of the passage, the prohibition of passage, and the deceleration stop prompting conversion rules, including the conditions for permitting passage or continuous passage of the conflict lane, the lane change sequence for allowing passage, and the detection of the lane segment traffic for the plurality of lanes that are allowed to pass at the same time.
- the corresponding conflict lanes allow the passage conditions in advance;
- the lane is allowed to pass for the longest time, which means that there is traffic flow in the detected lanes of the conflicting lanes.
- the maximum allowable transit time set in the case of quantity.
- the intelligent control method for a traffic signal light of a road intersection is characterized in that: at an intersection where a pedestrian and a non-motor vehicle pass the horizontal zebra crossing, the zebra crossing is disposed between the front end of the road and the intersection, and both ends thereof Each has a waiting area; the lanes where the direction of travel intersects with the direction of the zebra crossing are defined as the zebra crossing lanes, and the waiting area has a waiting button or a waiting instrument for waiting for pedestrians and non-motor vehicles. Wait for the button or wait for the detector to connect to the information processor.
- the intelligent control method for a traffic signal light of a road intersection is characterized in that: at an intersection where a pedestrian and a non-motor vehicle zebra crossing is provided, a pedestrian signal light is arranged at each end of each zebra crossing; the pedestrian signal light Paired in pairs in the direction of the channel; pedestrian signal lights are provided with green, stop-access yellow and non-entry red convertible rear projection light sources that allow pedestrians and non-motor vehicles to enter the traffic; pedestrian signal lights are connected to the information processor .
- the intelligent control method for a traffic signal light of a road intersection is characterized in that: the information processor analyzes the traffic flow and controls the traffic signal to handle the relationship between pedestrian and non-motor vehicle traffic and lane traffic.
- the information analysis processing program further includes a condition that the set zebra crossing allows entry, a minimum time for the zebra crossing to allow the passage delay, and a conversion rule that the zebra crossing and the conflict lane respectively allow passage and prohibition;
- the zebra crossing allows passage time including allowing pedestrians and non-motor vehicles to enter the zebra crossing time and the zebra crossing to allow the transit delay time; the zebra crossing allows passage conditions including the set waiting information for pedestrians and non-motor vehicles
- the zebra crossing allows the longest waiting time; the zebra crossing allows the transit time to coincide with all conflicting lanes of the zebra crossing.
- each lane detector transmits the detected dynamic vehicle flow information to the information processor, and the information processor performs dynamic analysis processing and judgment according to the set information analysis processing program, and passes the processing result through the signal wire.
- the command-related signal light performs color conversion and delay display, and the corresponding lane vehicle is allowed to pass at the intersection (signal green), no traffic (signal red) or deceleration stop prompt (signal yellow) and its delay prompt to realize the intersection Traffic command.
- the information analysis processing program combines the waiting information transmitted by the waiting detector or the waiting button, and combines the traffic information of each lane to conduct comprehensive analysis and judgment, and directs the lanes of the vehicles and the zebra crossings. District pedestrians and non-motor vehicles pass.
- the present invention is fully achievable under the existing detection technology, computer level, and programming capability, and only needs to be modified for existing roads and intersection facilities.
- the advantages of the present invention are as follows: 1. Since the change of the traffic signal and the delay command are dynamically analyzed according to the traffic flow data information detected in real time by the lanes of the intersection, the command of the traffic light is consistent with the actual requirements, thereby eliminating the lane congestion and The phenomenon of idle coexistence, regardless of time, any time period and any other reason, can make maximum use of the lane resources of road intersections and improve the efficiency of crossings. 2. As the efficiency of traffic increases, the reactive power consumption of fuel and energy of vehicles is minimized, cost and time are saved, and exhaust emissions are reduced. 3. In the relatively small traffic or time period, the driver of the vehicle waits for the relative travel time to decrease, which can effectively reduce the driver's anxiety, reduce the seconds, the behavior of the road and the traffic accidents caused by the traffic.
- Figure 1 is a schematic view of a lane crossing
- Figure 2 is a schematic view of the direction of travel of the intersection in Figure 1;
- Figure 3 is a schematic view of a crossing with a pedestrian and non-motorized traffic crossing zebra crossing
- Figure 4 is a schematic view of a no-division crossing.
- isolation zones (AM, BM, CM, DM) between the exit lanes and the drive lanes of each pair of roads; the lane sections of each exit lane near the intersection have right turn from right to left (ARR, BRR, CRR, DRR), straight (ARS, BRS, CRS, DRS) Turn left (ARL, BRL, CRL, DRL) lanes, lanes are marked by lane markings on each roadway, lane markings A guide arrow with the direction of the lane lane. When the lanes of the lanes cross the intersection, the directions of travel intersect each other, which are conflict lanes.
- a guide arrow with the direction of the lane lane.
- the traffic signal light TSL is located in the exit lane. The driver of the vehicle can see the road ahead of the opposite road.
- Each set of signal lights has one-to-one correspondence with the lane lanes (or at least one lane of lanes with the same driving direction).
- the signal lights each of which has a guiding arrow that coincides with the direction of the corresponding lane dividing lane.
- Each set of signal lights is provided with at least one delay time that displays the delay time.
- Each traffic light TSL and delay seconds are available in green, yellow and red convertible rear projection sources.
- Each set of signal lights is fixed to the subgrade or middle spacing belt by brackets, and each signal light and delay time are connected to the information processor output through wires.
- the invention discloses an intelligent control method for a traffic signal light of a road intersection, which comprises: a lane detection lane segment and a traffic flow detector setting; a traffic signal setting; an information processor analyzing and processing the traffic volume and controlling the traffic signal;
- the setting of the lane detection lane segment and the traffic flow detector includes setting a lane segment of a lane lane of the exit lane close to the intersection to a detection lane segment; each detection lane segment is adjacent to the front end of the intersection.
- GTA Departure Detector
- CTA Channel Detector
- the exit detector and the entrance detector are arranged in pairs in one-to-one correspondence with the detection lane segments. Detector sensor uses ground sense line Circle or non-contact sensor.
- the exit detector and the entrance detector respectively detect the number of vehicles that exit and enter the detection lane, and input the detection data information to the information processor through wires or wireless transmission.
- the information processor analyzes and processes traffic flow and controls traffic lights, including an information processor and an information analysis processing program.
- the information processor includes computer hardware and means for receiving detection data information, transmitting processing information, and supporting information analysis processing programs.
- the information analysis processing program includes at least a set vehicle average occupancy distance and an intersection travel speed parameter, a dynamic calculation rule for detecting a lane segment traffic flow, and a lane allowable passage time when the conflict lane has a traffic flow, The conditions for the passage of each conflict lane and the conversion rules for allowing passage, prohibition of passage, deceleration and stop, and their delay time.
- the lane is allowed to pass and the transit time is not limited until the lane detection lane detects the lane.
- the flow rate is started, the calculation allows the maximum time for the passage; the maximum time allowed for the passage of the passage, or the maximum time allowed for the passage, the vehicles in the lane detection lane have exited the lane, and the lane stops and switches to the conflict.
- the lane is allowed to pass.
- the lanes are allowed to pass time two (detecting lane segment storage traffic volume + lane traffic volume - derailing traffic volume)
- X per vehicle transit time is set to allow the most traffic For a long time, but when the traffic volume in the detection lane is earlier than the allowable traffic time, the transit time is allowed to terminate.
- the information processor After receiving the dynamic traffic flow information transmitted by each lane detector, the information processor dynamically analyzes and judges by the information analysis processing program, and transforms the processing information through the signal light and the delay second wire command related signal light color conversion. And the delay display, the vehicles in the corresponding lanes at the command intersection are allowed to pass (signal green), the deceleration stop prompt (signal yellow), the no-pass (signal red) and the delay prompt to realize the intelligent command of the traffic at the intersection.
- Figure 2 is a description of the direction of travel of each lane of the intersection of Figure 1. Whether the lanes in the figure form a conflict lane list are as follows:
- the permitted passages, no-passes and other conversion rules for the other lanes are listed below:
- the opposite road A and the road (:, the adjacent lanes ARS and CRS of the road B and the road D, the ARL and CRL, the BRS and the DRS, the BRL and the DRL do not conflict with each other, respectively, so that the traffic can be allowed at the same time.
- the allowable pass order rule set in the handler is to go straight and then turn left.
- the allowable pass and no pass of each straight and left turn lane and its conversion rules are as follows:
- the lane that completes the traffic flow before the other relative lane advances through the deceleration stop and prompts to enter the forbidden passage, which conflicts with The next sequential to-be-passed lane that does not conflict with another lane that is still in traffic advances to allow access. If the allowable transit time of the other lane that is still in traffic in the first sequential to-be-passed lane detection lane segment exceeds the set last sequence lane, the minimum effective time of the lane is sustainable, and the vehicle does not collide with the traffic lane. The latter sequence of lanes can be forwarded to allow passage until the passage of the lane that is still in traffic ends or stops.
- the ARS and CRS are allowed to pass, and the vehicles in the detection lane of the CRS all drive out before the ARS, then the CRS is decelerated and stopped to prompt to enter the forbidden passage, and the ARL is transferred to the permitted passage at the same time, if the ARL detection lane segment does not exist The traffic flow, and the ARS traffic will continue to exceed the set last order lane BRL sustainable and effective transit minimum time, then the BRL is allowed to pass until the ARS traffic ends or stops.
- the CRL is transited to the forbidden traffic before the ARL is completed, and the DRS is transferred to the permitted traffic at the same time, or the DRS detects that there is no traffic flow in the lane and meets the set conditions, which can be converted into ARS permission. Pass, and so on.
- both ARS and CRS remain continuously allowed, but if BRS and DRS and CRL and DRL detect lane segments are not available.
- the CRS is allowed to pass for the longest time or the vehicle in the detected lane has been taken out and stopped, and the ARL or BRL is allowed to transfer. Pass, while ARS remains continually allowed to pass. And so on.
- Figure 3 is a schematic illustration of the intersection of Figures 1 and 2 in a zebra crossing with pedestrian and non-motorized traffic.
- the zebra crossing is located between each road and intersection (AH, BH, CH, DH respectively).
- Pedestrian lights are available in green, yellow and red interchangeable rear projection sources, indicating pedestrian and non-motorized access (green), stop entry (yellow) and no entry (red).
- the direction of travel of each lane intersects with the direction of passage of the zebra crossing, which is the conflict lane of the zebra crossing.
- the list of conflicts between the zebra crossing and each lane is as follows:
- the zebra crossing and its conflicting lanes are:
- ARS, ARL, CRS, and DRL are all in the forbidden state, ARR and BRR are simultaneously transferred to no-pass, and AH is allowed to pass until any lane of ARS, ARL, CRS, and DRL. Allow access. If any conflict lanes of ARS, ARL, CRS, and DRL are allowed to pass, AH traffic is not sufficient. If the minimum allowed time is allowed, the transit time of ARS, AR CRS, DRL, ARR, and BRR is extended accordingly, and the transit time of BRS, DRS or BRS, CRL or BRS, and BRL is also extended accordingly. And so on.
- the waiting area of the zebra crossing access area has waiting information, and any of the conflict lanes have been continuously passed for more than the set waiting time of pedestrians and non-motor vehicles, then all the conflict lanes are interrupted and transferred to the forbidden passage.
- the zebra crossing allows passage for no less than the shortest time, and the conflicting lanes are re-opened or transferred to other lanes.
- ARL, BRS, and DRL are forbidden.
- ARS, ARR, and BRR are allowed to pass.
- AHW has waiting information and exceeds the longest waiting time.
- ARS, ARR, and BRR are interrupted to pass.
- AH is allowed to pass.
- ARS, ARR and BRR are restored to the minimum time allowed to pass.
- BRS and DRS will be allowed to pass.
- the zebra crossing waiting area has waiting information but during the longest waiting time, and the straight-line and left-turn conflict lanes are prohibited for less than the minimum time allowed for the zebra crossing, the zebra crossing continues to be blocked until the waiting time exceeds the setting. The longest waiting time.
- Figure 4 is the intersection of the command without the lane guide signal.
- the traffic command of the split-free pilot signal is different from that of Figure 1 and Figure 2:
- the detection lane segment can be divided into lanes or mixed lanes.
- the traffic flow detector is set according to the actual number of lanes in the detection lane segment.
- the traffic signal light only has the rear projection light source that can be converted into three colors of green, yellow and red, and there is no guide mark.
- Opposite lanes AR and CR form conflict lanes with BR and DR. Mutual transition allows traffic and no traffic, and both lanes are allowed to pass or no traffic regardless of whether the traffic lanes in the opposite lanes have the same traffic flow or actual transit time.
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Abstract
一种公路交叉道口交通信号灯的智能控制方法,包括车道检测车道段和车流量检测仪的设置;交通信号灯的设置;信息处理器对车流量的分析处理和对交通信号灯的控制。该方法的优点在于:1、杜绝了车道拥堵和空闲并存的现象,能最大限度地利用公路交叉道口的车道资源,提高道口通行效率;2、由于通行效率提高,从而减少了车辆燃料和能源的无功消耗,节约费用和时间,减少废气排放;3、在车流量相对较少的地段或时段,车辆驾驶人员等待通行时间相对减少,可有效降低驾驶员焦躁情绪,减少抢秒、抢道行为以及由此引发的交通事故。
Description
说明书 一种公路交叉道口交通信号灯的智能控制方法 技术领域
本发明属于交通信号灯控制方法技术领域, 具体涉及一种公路交叉道口交 通信号灯的智能控制方法。
背景技术
公路交叉道口各方向车道车辆的通行, 需要采用交通信号灯或交通警察的 指挥。 现有交通信号灯指挥技术和方法采用绿、 黄、 红三种颜色的指示、 转换 和延时, 指挥相对应车道内车辆的通行 (绿色)、 减速停止提示 (黄色) 和禁止 通行 (红色); 车道内设有并行分道的, 交通信号灯也相应设有车辆行驶方向指 示的导向箭头和各分道的指示、 转换、 延时和提示秒钟。
交通信号灯设置于交叉道口对应车道驾驶员可视前方, 各信号灯的颜色指 示、 延时时间及各颜色转换次序固定设定于指挥控制系统。 交叉道口车道截止 线设有检测车道是否违规或检测车流量的检测装置。 这种公路交通信号灯指挥 技术和方法存在以下缺点: 1.公路交叉口道各车道的实际车流量因在不同时期, 不同时段及其他各种原因而千变万化, 不可能与固定设定的信号灯指挥时间相 符合, 经常导致交叉道口各车道等待、 拥堵与空闲并存, 降低道口通行效率, 浪费车道资源。 2.车道的等待和拥堵势必无功消耗燃料和能源, 造成浪费, 而 且增加碳排放, 污染大气。 3.容易使驾驶员产生焦躁情绪, 增加出现抢秒、 抢 道行为, 从而引发更多的交通事故。
公开号为 CN101123041A的发明专利申请案, 提供了一种交通信号灯控制方 法, 通过车流量检测器对交叉道口出口处的车流量进行实时检测, 从而判断出 对应于该出口处的交叉道口是否拥堵, 进而控制信号灯指挥车道交通。 这种方
法虽然对交叉道口有一定程度的疏解, 但不能有效分析和判断各车道的实际车 流量情况, 容易导致因交叉路口不断转换红、 绿、 黄灯而浪费时间, 尤其是在 交通高峰期或车道复杂的道口, 反而增加车道的拥堵, 降低通行效率。 公开号 为 101572006A发明专利申请案提供的一种交通信号灯控制方法, 则是根据道路 实时检测情况, 通过中央控制系统指令交叉道口的交通信号灯箭头指向和颜色 转换, 指挥对应车道通行、 停止或改变车道行驶方向。 该专利申请案虽然提出 了动态分析和指挥各车道车辆通行, 但并未说明采用什么手段和途径来实现, 况且, 改变车道行驶方向也会使已进入车道的车辆驾驶员无所适从, 容易发生 车道混乱和违规驾驶。
发明内容
针对现有技术存在的问题, 本发明的目的在于设计提供一种公路交叉道口 交通信号灯的智能控制方法的技术方案。
所述的一种公路交叉道口交通信号灯的智能控制方法, 其特征在于包括: 车道检测车道段和车流量检测仪的设置; 交通信号灯的设置; 信息处理器对车 流量的分析处理和对交通信号灯的控制;
所述的车道检测车道段和车流量检测仪的设置具体包括: 将驶入道口方向 的驶出车道靠近道口一定距离的车道段设定为检测车道段, 检测车道段靠近交 叉道口的前端设置出道检测仪, 检测车道段远离交叉道口的后端设置入道检测 仪; 在设有按不同行驶方向分道的车道内, 检测车道段相应按分道分别设定检 测车道段, 包括同一行驶方向的多条分道; 每一分道的检测车道段靠近交叉道 口的前端均各设置分道的出道检测仪, 分道的检测车道段远离交叉道口的后端 均各设置分道的入道检测仪; 入道检测仪和出道检测仪与检测车道段或分道检 测车道段一一对应成对设置; 所述出道检测仪和入道检测仪分别检测驶出和驶 入检测车道段的车辆数量, 并将检测数据信息传输输入信息处理器; 各车道或
分道行驶方向在交叉道口相交叉的, 定义为互为冲突车道。
所述的交通信号灯的设置具体包括: 每一驶出车道设有交通信号灯组, 交 通信号灯组设置于交叉道口附近对应车道车辆驾驶员可视前方; 每一信号灯均 设有绿、 黄、 红三种颜色可转换背投光源; 有分道的车道, 每一行驶方向至少 设有一只带导向符号的信号灯; 每组信号灯可以设有至少一个显示延时的延时 秒钟, 延时秒钟可以设有绿、 黄、 红三种颜色可转换背投光源, 延时秒钟显示 颜色可以与当前信号灯颜色一致; 未设延时秒钟的, 以信号灯颜色转换前最后 数秒灯光闪烁表示转换延时; 各信号灯与信息处理器连接;
信息处理器对车流量的分析处理和对交通信号灯的控制: 包括信息处理器 和信息分析处理程序, 所述信息处理器采用适用计算机, 对各车道检测数据信 息按信息分析处理程序进行处理; 信息处理器输入端与各车道车流量检测仪连 接, 输出端与交通信号灯连接; 所述信息分析处理程序中, 包含有设定的车辆 平均占位距离和交叉道口车辆行驶限速速度参数、 出入检测车道段车流量动态 运算规则、 各车道允许通行、 禁止通行、 减速停止提示的转换法则及其延时时 间、 以及冲突车道的检测车道段有车流量时的车道允许通行最长时间;
所述车辆占位距离除以车辆限速速度, 即为每辆车通行时间;
所述检测车道段车流量动态运算规则, 包括车道未被允许通行时的检测车 道段内车辆数累积计算, 以及车道允许通行后陆续入出检测车道段车辆数的相 应实时增减;
所述各冲突车道允许通行、 禁止通行、 减速停止提示的转换法则, 包括冲 突车道允许通行或持续通行的条件、 允许通行的车道转换顺序、 以及同时允许 通行的多条车道的检测车道段车流量不等或通行时间不同时, 其对应的冲突车 道提前允许通行的条件;
所述车道允许通行最长时间, 是指在相冲突的车道的检测车道段均有车流
量的情况下设定的最长允许通行时间。
所述的一种公路交叉道口交通信号灯的智能控制方法, 其特征在于:在设有 行人和非机动车通行横道斑马线的交叉道口, 斑马线通道设置于道路前端与交 叉道口之间, 其两端外各设有通行等候区; 行驶方向与斑马线通道方向相交的 车道, 均定义为斑马线冲突车道, 通行等候区内设有通行等候按纽或检测是否 有等候通行行人和非机动车的等候检测仪, 等候按钮或等候检测仪与信息处理 器连接。
所述的一种公路交叉道口交通信号灯的智能控制方法, 其特征在于:在设有 行人和非机动车斑马线通道的交叉路口, 每一斑马线通道的两端均设有行人信 号灯; 所述行人信号灯按通道方向对面成对设置; 行人信号灯设有提示行人和 非机动车允许进入通行的绿色、 停止进入的黄色和禁止进入的红色三种颜色的 可转换背投光源; 行人信号灯与信息处理器连接。
所述的一种公路交叉道口交通信号灯的智能控制方法, 其特征在于: 所述 的信息处理器对车流量的分析处理和对交通信号灯的控制中在处理行人和非机 动车通行与车道通行关系时, 所述信息分析处理程序还包含有设定的斑马线通 道允许进入通行的条件、 斑马线通道允许通行延时的最短时间、 以及斑马线通 道与其冲突车道分别允许通行和禁止通行的转换法则; 所述斑马线通道允许通 行时间包括允许行人和非机动车进入斑马线通道时间和斑马线通道允许通行延 时时间; 所述斑马线通道允许通行的条件中, 包含有设定的在有行人和非机动 车等候信息时斑马线通道允许通行的最长等候时间; 所述斑马线通道允许通行 时间与斑马线通道的所有冲突车道禁止通行时间重合, 当重合时间少于斑马线 通道允许通行的最短时间时, 斑马线通道的冲突车道的禁止通行延时补足, 同 时也相应延长了与斑马线通道无冲突的车道的允许通行时间并不受其允许通行 最长时间限制。
本发明的原理是: 各车道检测仪将检测到的动态车流量信息传输给信息处 理器, 信息处理器按照设定的信息分析处理程序进行动态的分析处理和判断, 并把处理结果通过信号灯导线指令相关信号灯进行颜色的变换和延时显示, 指 挥对应车道车辆在交叉道口允许通行 (信号灯绿色)、 禁止通行 (信号灯红色) 或减速停止提示 (信号灯黄色) 及其延时提示, 实现对交叉道口的交通指挥。
设有行人和非机动车斑马线通道的交叉路口, 信息分析处理程序根据由等 候检测仪或等候按钮传输的等候信息, 结合各车道车流量信息进行综合分析判 断, 指挥各车道车辆和各斑马线通道等候区行人和非机动车通行。
本发明在现有检测技术、 计算机水平、 程序编制能力条件下, 是完全可以 实现的, 并且仅只需对现有道路及交叉道口设施进行改造即可。
本发明的优点在于: 1、 由于交通信号灯的变化和延时指令是根据交叉道口 各车道实时检测到的车流量数据信息进行动态分析所得, 因此, 信号灯指挥与 实际要求一致, 杜绝了车道拥堵和空闲并存的现象, 无论任何时期, 任何时段 和其他任何原因, 均能最大限度地利用公路交叉道口的车道资源, 提高道口通 行效率。 2、 由于通行效率提高, 从而最大限度减少了车辆燃料和能源的无功消 耗, 节约费用和时间, 减少废气排放。 3、 在车流量相对较少的地段或时段, 车 辆驾驶人员等待通行时间相对减少, 可有效降低驾驶员焦躁情绪, 减少抢秒、 抢道行为以及由此引发的交通事故。
附图说明
图 1为分道交叉道口的示意图;
图 2为图 1中交叉道口分道行驶方向的示意图;
图 3为设有行人和非机动车通行横道斑马线的交叉道口示意图;
图 4为无分道交叉道口的示意图。
具体实施方式
以下结合说明书附图来进一步说明本发明。 如图 1所示, A、 B、 C、 D四对双向交通道路相交成十字交叉道口, 每对道 路的右车道 (AR、 BR、 CR、 DR) 均为驶向交叉道口的驶出车道, 左车道 (AL、 BL、 CL、 DL)均为驶离交叉道口的驶入车道。 每对道路的驶出车道和驶入车道间 均设有隔离带 (AM、 BM、 CM、 DM) ;各驶出车道靠近交叉道口的车道段自右向左 设有右转 (ARR、 BRR、 CRR、 DRR)、 直行 (ARS、 BRS、 CRS、 DRS) 左转 (ARL、 BRL、 CRL、 DRL)分道车道, 各分道车道间均在路面用车道标线区隔, 分道车道 路面标示有该分道车道行驶方向的导向箭头。 各分道车道驶经交叉道口的行驶 方向相交的, 相互为冲突车道。
交通信号灯 TSL设于驶出车道车辆驾驶员可视前方对向道路驶入车道上方, 每组信号灯均设有与分道车道一一对应 (或数条相同行驶方向分道车道至少设 一个) 的信号灯,每一信号灯均设有与相对应分道车道行驶方向一致的导向箭 头。 每组信号灯设有至少一个显示延时时间的延时秒钟。 各交通信号灯 TSL和 延时秒钟均设有绿色、 黄色和红色三种可转换背投光源。 每组信号灯通过支架 固设于路基或中间隔带上, 各信号灯及延时秒钟通过导线与信息处理器输出端 连接。
一种公路交叉道口交通信号灯的智能控制方法, 其特征在于包括: 车道检 测车道段和车流量检测仪的设置; 交通信号灯的设置; 信息处理器对车流量的 分析处理和对交通信号灯的控制;
所述车道检测车道段和车流量检测仪的设置包括将驶出车道的各分道车道 靠近交叉道口一定距离的车道段设定为检测车道段; 每一检测车道段靠近交叉 道口的前端均设有出道检测仪 (GTA), 后端均设有入道检测仪 (CTA)。 出道检 测仪与入道检测仪与检测车道段一一对应成对设置。 检测仪传感器采用地感线
圈或非接触式感应器。 出道检测仪和入道检测仪分别检测驶出和驶入检测车道 的车辆数量, 并将检测数据信息通过导线或无线传输输入信息处理器。
所述信息处理器对车流量的分析处理和对交通信号灯的控制, 包括信息处 理器和信息分析处理程序。
所述信息处理器包括计算机硬件和能够接收检测数据信息、 发送处理信息、 以及支持信息分析处理程序的模块。
所述信息分析处理程序, 至少包含有设定的车辆平均占位距离和交叉道口 车辆行驶速度参数、 检测车道段车流量的动态运算规则、 冲突车道有车流量时 的车道允许通行最长时间、 各冲突车道允许通行的条件以及允许通行、 禁止通 行、 减速停止提示的转换法则及其延时时间。
具体举例说明如下:
1、 当某一检测车道段内检测有车流量而冲突车道的检测车道段内均未检测 到车流量时, 则该车道允许通行且通行时间不受限制, 直至冲突车道检测车道 段检测有车流量时, 再开始计算允许通行最长时间; 允许通行最长时间结束后, 或者在允许通行最长时间内, 通行车道检测车道段内车辆均已驶出车道, 该车 道停止通行, 转换至冲突车道允许通行。
2、 当相互冲突车道的检测车道段均检测有车流量时, 车道允许通行时间二 (检测车道段储存车流量 +入道车流量-出道车流量) X每辆车通行时间 设定 的允许通行最长时间, 但检测车道段内车流量早于允许通行时间均已驶出时, 则允许通行时间终止。 每辆车通行时间=设定的平均车辆占位距离除以设定的交 叉道口车辆行驶限速速度参数。 检测车道段储存车流量=前次通行结束后尚未驶 出检测车道段的剩余车辆数 +本次通行前驶入检测车道段的车辆数。
3、 当相互冲突车道的检测车道段均检测有不少于设定的允许通行最长时间 的车流量时, 则均按允许通行最长时间通行、 延时和转换。
4、 当车道允许通行结束后, 经设定的减速停止提示延时转入禁止通行。 禁 止通行时间 =冲突车道通行吋间 +设定的冲突车道减速停止提示时间 设定的冲 突车道允许通行最长时间 +设定的冲突车道减速停止提示时间。
所述信息处理器在接收到各车道检测仪所传输的动态车流量信息后, 经所 述的信息分析处理程序动态分析和判断, 把处理信息通过信号灯和延时秒钟导 线指令相关信号灯颜色变换和延时显示, 指挥交叉路口各相对应车道的车辆允 许通行 (信号灯绿色)、 减速停止提示 (信号灯黄色)、 禁止通行 (信号灯红色) 及其延时提示, 实现对交叉道口交通的智能指挥。
图 2是对图 1交叉道口各分道车道行驶方向的描述。 图中各车道是否形成 冲突车道列表如下:
(注: 表中打 " X " 的为车道相冲突。 )
据此可见, 各道路的右转车道相互之间及与其他各车道均无冲突, 因此可 以持续保持通行。 其他各车道的允许通行、 禁止通行及其转换法则列举如下:
相向的道路 A与道路 (:、 道路 B与道路 D的各相向车道 ARS与 CRS、 ARL与 CRL、 BRS与 DRS、 BRL与 DRL分别互不冲突, 因此分别可以同时允许通行。 假设 所述信息分析处理程序中设定的允许通行顺序法则为先直行后左转, 则各直行 和左转车道的允许通行和禁止通行及其转换法则如下:
1、 当同时允许通行一对相向车道的检测车道段车流量相同或相近(实际通 行时间相同或相近) 时, 则在该对相向检测车道段车流量均驶出后, 经减速停 止提示转入禁止通行; 按顺序排列其后的另一对相向车道则相应转入允许通行。 例如 ARS与 CRS同时允许通行且同时结束, 则 ARS与 CRS经减速停止提示转入 禁止通行, ARL与 CRL相应转入允许通行, 待 ARL与 CRL同时结束通行时, 再转 入 BRS与 DRS允许通行, 以此类推。
2、 当同时允许通行一对相向车道的检测车道段车流量不同或实际通行时间 不同时, 则先于另一相对车道完成车流量通行的车道先行经减速停止提示转入 禁止通行, 与其冲突而与仍在通行的另一车道不冲突的下一顺序待通行车道提 前转入允许通行。 如果第一顺序待通行车道检测车道段未有车流量而仍在通行 的另一车道的允许通行时间超过设定的后一顺序车道可持续有效通行最少时 间, 则与仍在通行车道不冲突的后一顺序待通行车道可以提前转入允许通行, 直至与仍在通行的车道通行结束或停止。 例如, 允许通行的 ARS 与 CRS, 其中 CRS的检测车道段的车辆全部驶出先于 ARS, 则 CRS经减速停止提示转入禁止通 行, ARL同时提前转入允许通行, 如果 ARL检测车道段未有车流量, 且 ARS通行 仍将持续超过设定的后一顺序车道 BRL可持续有效通行最少时间, 则转为 BRL 允许通行, 直至 ARS通行结束或停止。 同理, ARL与 CRL通行时, CRL先于 ARL 完成通行而转成禁止通行, 则 DRS同时提前转入允许通行, 或者 DRS检测车道 未有车流量且符合设定的条件, 可以转为 ARS允许通行, 以此类推。
3、 当同时允许通行的一对相向车道通行而与其相冲突的其他各车道的检测
车道段均未有车流量时, 该对相向车道持续保持允许通行, 直至冲突车道的检 测车道段有车辆驶入, 再开始计算其允许通行最长时间, 或者,在允许通行最长 时间内通行车道的检测车道段车辆均已驶出, 该通行车道停止通行, 按设定的 顺序转换至有车流量顺序在前的冲突车道允许通行。 但是, 如果仅只与一个通 行车道相冲突的冲突车道检测车道段有车辆驶入的, 则另一车道仍持续保持允 许通行。 例如, 当 ARL、 BRS、 BRL、 CRL、 DRS、 DRL的检测车道段均未有车流量 时, 则 ARS和 CRS均保持持续允许通行, 但如果 BRS和 DRS以及 CRL和 DRL检 测车道段均未有车辆驶入, 而 ARL或 BRL的检测车道段有车辆驶入, 则 CRS经 设定的允许通行最长时间或检测车道段内车辆均己驶出转入停止通行, ARL 或 BRL相应转入允许通行, 而 ARS仍保持持续允许通行。 以此类推。
4.当各车道的检测车道段车流量均超过设定的允许通行最长时间的车流量 时, 则各相向车道均同时按设定的允许通行最长时间和设定的转换顺序通行及 减速停止提示和禁止通行转换及其延时。
图 3是图 1和图 2在设有行人和非机动车通行横道斑马线的交叉道口示意 图。
斑马线通道设于各道路与交叉道口之间 (分别为 AH、 BH、 CH、 DH ),每条斑 马线通道两端外均设有行人和非机动车通行等候区 AHW、 B冊、 CHW和 DHW, 各通 行等候区内均设有通行按钮或等候检测仪以及面向斑马线通道的行人信号灯。 行人信号灯设有绿、 黄、 红三种颜色的可转接背投光源, 分别指示行人和非机 动车允许通行 (绿色)、 停止进入提示 (黄色) 和禁止进入 (红色)。 各车道行 驶方向与斑马线通道通行方向相交的, 为斑马线通道的冲突车道。 斑马线通道 与各车道的冲突情况列表如下:
(注: 表中打 " X " 的车道为对应斑马线通道的冲突车道。)
斑马线通道与其冲突车道通行情况为:
1、 斑马线通道通行等候区内无等候信息, 与之冲突的各车道按前述无斑马 线通道状况通行。
2、 斑马线通道通行等候区有等候信息, 而与之相冲突各车道均处于禁止通 行时, 该斑马线通道允许通行。 各冲突车道禁止通行以直行和左转的冲突车道 禁止通行为准, 右转的冲突车道仅只在斑马线通道有允许通行条件时随直行和 左转冲突车道而转入禁止通行。 如果任一冲突车道禁止通行时间少于斑马线通 道允许通行最短时间的, 则相应延长所有冲突车道禁止通行时间, 同时也相应 延长了与该斑马线通道无冲突且有条件允许通行的车道的通行时间。 例如, AHW 有等候信息, 当 ARS、 ARL, CRS、 DRL均处于转入禁止通行状态时, ARR、 BRR同 时随之转入禁止通行, AH允许通行, 直至 ARS、 ARL、 CRS、 DRL任一车道允许通 行。 如果 ARS、 ARL、 CRS、 DRL任一冲突车道可以允许通行, 但 AH通行不足设
定的允许通行最短时间的, 则相应延长 ARS、 AR CRS、 DRL以及 ARR、 BRR的 禁止通行时间, 同时也相应延长了 BRS、 DRS或 BRS、 CRL或 BRS、 BRL的通行时 间。 以此类推。
3、 斑马线通道等候区有等候信息, 而其任一冲突车道一直保持持续通行超 过了设定的行人和非机动车最长等候时间的, 则其所有冲突车道通行中断, 转 入禁止通行, 待该斑马线通道允许通行不少于最短时间后, 其冲突车道再恢复 通行或转由其他车道允许通行。 例如, ARL、 BRS、 DRL 已禁止通行, ARS、 ARR 和 BRR持续允许通行, AHW有等候信息且超过了最长等候时间, 则 ARS、 ARR、 BRR通行中断转入禁止通行, AH允许通行, 直至超过允许通行最短时间, ARS、 ARR和 BRR再恢复通行。其间, BRS或 DRS的检测车道段如果有车流量的,则 BRS 和 DRS转入允许通行。
4、 斑马线通道等候区有等候信息但在最长等候时间内, 而其直行和左转冲 突车道禁止通行时间少于斑马线允许通行最短时间的, 则斑马线通道持续禁止 通行, 直至等候时间超过设定的最长等候时间。
图 4是无分道导向信号灯指挥的交叉路口。
无分道导向信号灯的交通指挥与图 1和图 2不同的是:
1、 检测车道段内可以是分道的, 也可以是混道的, 车流量检测仪按检测车 道段内实际车道数设置。
2、 交通信号灯仅只设有绿、 黄、 红三种颜色可转换显示的背投光源, 而无 导向标示。
3、 相向车道 AR和 CR与 BR和 DR形成冲突车道, 相互转换允许通行和禁止 通行, 且无论相向的车道各有车流量或实际通行时间是否相同, 均同时允许通 行或禁止通行。
4、 相向车道的车辆直行和左转在交叉道口相互避让通行。
Claims
1.一种公路交叉道口交通信号灯的智能控制方法, 其特征在于包括: 车道 检测车道段和车流量检测仪的设置; 交通信号灯的设置; 信息处理器对车流量 的分析处理和对交通信号灯的控制;
所述的车道检测车道段和车流量检测仪的设置具体包括: 将驶入道口方向 的驶出车道靠近道口一定距离的车道段设定为检测车道段, 检测车道段靠近交 叉道口的前端设置出道检测仪, 检测车道段远离交叉道口的后端设置入道检测 仪; 在设有按不同行驶方向分道的车道内, 检测车道段相应按分道分别设定检 测车道段, 包括同一行驶方向的多条分道; 每一分道的检测车道段靠近交叉道 口的前端均各设置分道的出道检测仪, 分道的检测车道段远离交叉道口的后端 均各设置分道的入道检测仪; 入道检测仪和出道检测仪与检测车道段或分道检 测车道段一一对应成对设置; 所述出道检测仪和入道检测仪分别检测驶出和驶 入检测车道段的车辆数量, 并将检测数据信息传输输入信息处理器; 各车道或 分道行驶方向在交叉道口相交叉的, 定义为互为冲突车道;
所述的交通信号灯的设置具体包括: 每一驶出车道设有交通信号灯组, 交 通信号灯组设置于交叉道口附近对应车道车辆驾驶员可视前方; 每一信号灯均 设有绿、 黄、 红三种颜色可转换背投光源; 有分道的车道, 每一行驶方向至少 设有一只带导向符号的信号灯; 每组信号灯可以设有至少一个显示延时的延时 秒钟, 延时秒钟可以设有绿、 黄、 红三种颜色可转换背投光源, 延时秒钟显示 颜色可以与当前信号灯颜色一致; 未设延时秒钟的, 以信号灯颜色转换前最后 数秒灯光闪烁表示转换延时; 各信号灯与信息处理器连接;
信息处理器对车流量的分析处理和对交通信号灯的控制: 包括信息处理器 和信息分析处理程序, 所述信息处理器采用适用计算机, 对各车道检测数据信 息按信息分析处理程序进行处理; 信息处理器输入端与各车道车流量检测仪连
接, 输出端与交通信号灯连接; 所述信息分析处理程序中, 包含有设定的车辆 平均占位距离和交叉道口车辆行驶限速速度参数、 出入检测车道段车流量动态 运算规则、 各车道允许通行、 禁止通行、 减速停止提示的转换法则及其延时时 间、 以及冲突车道的检测车道段有车流量时的车道允许通行最长时间;
所述车辆占位距离除以车辆限速速度, 即为每辆车通行时间;
所述检测车道段车流量动态运算规则, 包括车道未被允许通行时的检测车 道段内车辆数累积计算, 以及车道允许通行后陆续入出检测车道段车辆数的相 应实时增减;
所述各冲突车道允许通行、 禁止通行、 减速停止提示的转换法则, 包括冲 突车道允许通行或持续通行的条件、 允许通行的车道转换顺序、 以及同时允许 通行的多条车道的检测车道段车流量不等或通行时间不同时, 其对应的冲突车 道提前允许通行的条件;
所述车道允许通行最长时间, 是指在相冲突的车道的检测车道段均有车流 量的情况下设定的最长允许通行时间。
2.如权利要求 1 所述的一种公路交叉道口交通信号灯的智能控制方法, 其 特征在于:在设有行人和非机动车通行横道斑马线的交叉道口, 斑马线通道设置 于道路前端与交叉道口之间, 其两端外各设有通行等候区; 行驶方向与斑马线 通道方向相交的车道, 均定义为斑马线冲突车道, 通行等候区内设有通行等候 按纽或检测是否有等候通行行人和非机动车的等候检测仪, 等候按钮或等候检 测仪与信息处理器连接。
3.如权利要求 1或 2所述的一种公路交叉道口交通信号灯的智能控制方法, 其特征在于:在设有行人和非机动车斑马线通道的交叉路口, 每一斑马线通道的 两端均设有行人信号灯; 所述行人信号灯按通道方向对面成对设置; 行人信号 灯设有提示行人和非机动车允许进入通行的绿色、 停止进入的黄色和禁止进入
的红色三种颜色的可转换背投光源; 行人信号灯与信息处理器连接。
4.如权利要求 1、 2或 3所述的一种公路交叉道口交通信号灯的智能控制方 法, 其特征在于: 所述的信息处理器对车流量的分析处理和对交通信号灯的控 制中在处理行人和非机动车通行与车道通行关系时, 所述信息分析处理程序还 包含有设定的斑马线通道允许进入通行的条件、 斑马线通道允许通行延时的最 短时间、 以及斑马线通道与其冲突车道分别允许通行和禁止通行的转换法则; 所述斑马线通道允许通行时间包括允许行人和非机动车进入斑马线通道时间和 斑马线通道允许通行延时时间; 所述斑马线通道允许通行的条件中, 包含有设 定的在有行人和非机动车等候信息时斑马线通道允许通行的最长等候时间; 所 述斑马线通道允许通行时间与斑马线通道的所有冲突车道禁止通行时间重合, 当重合时间少于斑马线通道允许通行的最短时间时, 斑马线通道的冲突车道的 禁止通行延时补足, 同时也相应延长了与斑马线通道无冲突的车道的允许通行 时间并不受其允许通行最长时间限制。
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