技术领域technical field
本发明属于高速公路合流区预警技术领域，具体涉及一种基于危险度判别的高速公路合流区交通冲突预警系统。The invention belongs to the technical field of expressway merge area early warning, and in particular relates to an expressway merge area traffic conflict early warning system based on risk degree discrimination.
背景技术Background technique
决定交通冲突严重程度的主要因素有冲突速度、冲突角度、冲突距离等，一般来说，存在交通冲突的两个车辆之间的距离越小、相对速度越大、冲突角度越大，冲突越严重。The main factors that determine the severity of traffic conflicts are conflict speed, conflict angle, conflict distance, etc. Generally speaking, the smaller the distance between two vehicles in traffic conflict, the greater the relative speed, and the greater the conflict angle, the more serious the conflict .
现有的交通冲突判别方法有距离判别法、时间判别法、能量判别法等，但是这些方法都存在一定的不足，比如距离判别法只把距离作为判断因素，那当双方冲突距离很小但是相对速度也很小时，此时的交通冲突也不一定就很严重；时间判别法只把时间作为判别因素，虽然优于距离判别法，但是碰到短时间和低速度同时存在时，此时的交通冲突也不一定就很严重；而能量判别法在实际应用中的劣势更明显，比如它的判别标准较难统一，能量在计算的时候也和具体的车型、车重、机动车、非机动车、行人等有关，若是想基于能量精确计算冲突严重度，存在较大难度。Existing traffic conflict discrimination methods include distance discrimination method, time discrimination method, energy discrimination method, etc., but these methods all have certain deficiencies. The speed is also very small, and the traffic conflict at this time is not necessarily very serious; the time discrimination method only uses time as the discrimination factor, although it is better than the distance discrimination method, but when short time and low speed exist at the same time, the traffic at this time will The conflict is not necessarily very serious; and the disadvantages of the energy discrimination method in practical application are more obvious. , pedestrians, etc., if you want to accurately calculate the severity of conflict based on energy, there is a big difficulty.
发明内容Contents of the invention
为了克服上述缺点，本发明要解决的技术问题是设计了一种基于危险度判别的高速公路合流区交通冲突预警系统，以便提高高速公路合流区域交通冲突预测的准确性和实效性。In order to overcome the above-mentioned shortcomings, the technical problem to be solved in the present invention is to design a traffic conflict early warning system in expressway merge areas based on risk degree discrimination, so as to improve the accuracy and effectiveness of traffic conflict prediction in expressway merge areas.
为了解决上述问题，本专利提供的技术方案包括：In order to solve the above problems, the technical solutions provided by this patent include:
一种基于危险度判别的高速公路合流区交通冲突预警系统，其特征包括：An early warning system for traffic conflicts in a highway merge area based on risk discrimination, the features of which include:
信息采集模块、信息处理模块以及信息发布模块；Information collection module, information processing module and information release module;
所述信息采集模块，用于采集并存储高速公路合流区存在交通冲突的车辆的基本交通参数信息并发送给信息处理模块，所述信息采集模块在采集和存储高速公路合流区存在交通冲突的车辆的基本交通参数信息时会进行分类；所述分类包括分为高速公路合流区主干道最外侧车道车辆的基本交通参数信息、高速公路合流区匝道车道车辆的基本交通参数信息，并将存在交通冲突的一对车辆记为冲突车辆对；所述每个冲突车辆对包括且仅包括一辆高速公路合流区主干道最外侧车道车辆和一辆高速公路合流区匝道车道车辆；所述高速公路合流区存在交通冲突的车辆对的基本交通参数信息包括高速公路合流区主干道最外侧车道车辆的车头距离冲突点的距离为xi，高速公路合流区主干道最外侧车道车辆的车头距离冲突点的距离为xi处的速度大小为vi，高速公路合流区主干道最外侧车道车辆的车头距离冲突点的距离为xi处的速度大小为ai；以及，高速公路合流区匝道车道车辆的车头距离冲突点的距离为xj，高速公路合流区匝道车道车辆的车头距离冲突点的距离为xj处的速度大小为vj，高速公路合流区匝道车道车辆的车头距离冲突点的距离为xj处的速度大小为aj；i，j∈N+；The information collection module is used to collect and store the basic traffic parameter information of vehicles with traffic conflicts in the expressway merge area and send it to the information processing module, and the information collection module collects and stores the vehicles with traffic conflicts in the expressway merge area The basic traffic parameter information will be classified; the classification includes the basic traffic parameter information of vehicles in the outermost lane of the main road in the merge area of the expressway, and the basic traffic parameter information of the vehicles in the ramp lane of the merge area of the expressway, and there will be traffic conflicts A pair of vehicles is recorded as a conflicting vehicle pair; each conflicting vehicle pair includes and only includes one vehicle in the outermost lane of the main road in the expressway merging area and one vehicle in the ramp lane of the expressway merging area; the expressway merging area The basic traffic parameter information of the vehicle pair with traffic conflict includes the distance between the front of the vehicle in the outermost lane of the main road in the expressway merge area and the conflict point xi , and the distance between the front of the vehicle in the outermost lane of the main road in the expressway merge area and the conflict point The speed at xi is vi , the distance between the front of the vehicle in the outermost lane of the main road in the expressway merging area and the conflict point isxi , and the speed at which is ai ; The distance from the conflict point is xj , the distance between the head of the vehicle on the ramp lane in the merge area of the expressway is xj from the conflict point, and the speed at the point is vj , the distance between the head of the vehicle on the ramp lane in the merge area of the expressway and the conflict point is x The velocity atj is aj ; i, j∈N+ ;
所述信息处理模块根据所述信息采集模块采集到的存在交通冲突的车辆对的基本交通参数信息首先进行运动学建模，然后计算提取交通冲突表征量归一化处理，接着建立危险度评估函数模型进行危险度评估，最后将处理得到的危险度评估结果发送给信息发布模块；所述信息处理模块在进行所述运动学建模时，对高速公路合流区主干道最外侧车道车辆采用的运动学模型是匀减速运动模型，对对高速公路合流区匝道车道车辆采用的运动学模型是匀加速运动模型；所述的交通冲突特征量包括两个：冲突时间和冲突角度；所述的冲突时间为存在交通冲突的两辆车辆到达冲突点的时间差，记为Δt；所述的冲突角度为存在交通冲突的两辆车辆达到冲突点的速度夹角，记为α；所述的信息处理模块对所述的交通冲突表征量进行归一化处理是指将量纲不同的因素转化为无量纲且取值均为[0.1]的指标，包括交通冲突时间归一化指标和交通冲突角度归一化指标，所述的交通冲突时间归一化指标为：所述t0是车辆在合流区的正常通过时间，为一个常量，且取值范围设定为：t0≥max(ti，tj)；所述的交通冲突角度归一化指标为：Y＝1-cosα，所述的信息处理模块建立所述的危险度评估函数模型是指以交通冲突时间归一化指标和交通冲突角度归一化指标为自变量、以交通冲突危险度为因变量建立的交通冲突危险度评估函数，所述的危险度评估函数模型的数学表达式为G＝X+m*Y，其中：Gi为交通冲突危险度评估函数值，取值范围为[0，1]之间，m为复数因子，X，Y分别为交通冲突时间归一化指标和交通冲突角度归一化指标；所述信息处理模块进行所述危险度等级划分是指对危险度评估函数值进行[0，1]之间的均分，均分为四等分，然后从小到大顺序排列进行等级划分；所述的信息处理模块将处理得到的危险等级划分结果发送给所述信息发布模块；The information processing module first carries out kinematic modeling according to the basic traffic parameter information of the vehicle pairs with traffic conflicts collected by the information collection module, then calculates and extracts the traffic conflict characterization quantities for normalization processing, and then establishes a risk assessment function The model performs risk assessment, and finally sends the resulting risk assessment result to the information publishing module; when the information processing module performs the kinematics modeling, the movement of the vehicle in the outermost lane of the main road in the merge area of the expressway is calculated. The physical model is a uniform deceleration motion model, and the kinematics model adopted to the ramp vehicle in the highway merge area is a uniform acceleration motion model; the traffic conflict characteristic quantity includes two: conflict time and conflict angle; the conflict time is the time difference between the arrival of the two vehicles in the traffic conflict at the conflict point, which is denoted as Δt; the conflict angle is the speed angle at which the two vehicles in the traffic conflict reach the conflict point, and is denoted as α; the information processing module is The normalization process of the traffic conflict characterization quantity refers to transforming the factors with different dimensions into dimensionless indicators with a value of [0.1], including the normalization index of traffic conflict time and the normalization of traffic conflict angle Index, the normalized index of the traffic conflict time is: The t0 is the normal passage time of vehicles in the merge area, which is a constant, and the value range is set as: t0 ≥ max(ti , tj ); the normalized index of the traffic conflict angle is: Y=1-cosα, The risk evaluation function model established by the information processing module refers to the traffic conflict risk established with the traffic conflict time normalization index and the traffic conflict angle normalization index as independent variables and the traffic conflict risk degree as the dependent variable. Degree evaluation function, the mathematical expression of described risk degree evaluation function model is G=X+m*Y, wherein:Gi is the traffic conflict risk degree evaluation function value, and the value range is between [0,1], m is a complex factor, X, Y are respectively the normalization index of traffic conflict time and the normalization index of traffic conflict angle; the said information processing module divides the said degree of danger level refers to carrying out [0, 1], divided into quarters, and then arranged in order from small to large for classification; the information processing module sends the processed hazard classification results to the information publishing module;
所述的信息发布模块根据从所述信息处理模块接收到的不同的危险等级划分结果进行不同的预警，根据不同的等级发布相应的预警信息。The information release module performs different early warnings according to the different risk level classification results received from the information processing module, and releases corresponding early warning information according to different levels.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
1.本发明首次提出了使用归一化的方法处理交通冲突表征参数，通过归一化指标建立数学模型，以便于后续的数据处理。通过归一化的方法将有量纲的参数转化为无量纲的参数，且归一化后的参数和原未进行归一化处理的参数的变化趋势保持一致，这样的处理将冲突时间和冲突角度两个单位不同不能直接运算的量转化为无单位能进行直接运算的量，而且还引入复数表达式，还方便从复数表示(坐标表示)的角度进行进一步的比较分析。1. The present invention proposes for the first time the use of a normalization method to process traffic conflict characterization parameters, and establishes a mathematical model through the normalization index to facilitate subsequent data processing. Dimensional parameters are converted into dimensionless parameters through normalization, and the change trend of the normalized parameters is consistent with the original parameters that have not been normalized. Such processing will conflict time and conflict The quantity that cannot be directly calculated by the two different units of the angle is converted into a quantity that can be directly calculated without a unit, and a complex number expression is also introduced, which is convenient for further comparison and analysis from the perspective of complex number representation (coordinate representation).
2.本发明首次提出将交通冲突预警等级与交通冲突点的危险程度联系起来，并将交通冲突点的危险程度作为交通预警等级划分的依据，提高了交通预警分级的精准度和可靠性，且计算过程简单明了、容易操作，具有极好的可实施性。2. The present invention proposes for the first time that the traffic conflict early warning level is linked with the degree of danger of the traffic conflict point, and the degree of danger of the traffic conflict point is used as the basis for the classification of the traffic early warning level, which improves the accuracy and reliability of the traffic early warning classification, and The calculation process is simple and clear, easy to operate, and has excellent implementability.
附图说明Description of drawings
图1为本发明的系统结构图；Fig. 1 is a system structure diagram of the present invention;
图2为本发明的交通冲突危险度模型参数计算标示说明图。Fig. 2 is an explanatory diagram for calculating and marking the parameters of the traffic conflict risk model of the present invention.
具体实施方案specific implementation plan
为了便于理解，此处结合附图对本发明的具体实施步骤做以下表述：For ease of understanding, the specific implementation steps of the present invention are described below in conjunction with the accompanying drawings:
本发明设计这种基于危险度判别的高速公路合流区交通冲突预警系统，如图1所示，分为三个模块：信息采集模块、信息处理模块以及信息发布模块。The present invention designs such an early warning system for traffic conflicts in expressway merge areas based on risk degree discrimination, as shown in Figure 1, which is divided into three modules: an information collection module, an information processing module and an information release module.
在具体实施时候，信息采集模块用于采集并存储高速公路合流区存在交通冲突的车辆的基本交通参数信息并发送给信息处理模块，信息采集模块在采集和存储高速公路合流区存在交通冲突的车辆的基本交通参数信息时会进行分类；In specific implementation, the information collection module is used to collect and store the basic traffic parameter information of vehicles with traffic conflicts in the expressway merge area and send it to the information processing module, and the information collection module collects and stores the vehicles with traffic conflicts in the expressway merge area The basic traffic parameter information will be classified;
上述分类包括分为高速公路合流区主干道最外侧车道车辆的基本交通参数信息、高速公路合流区匝道车道车辆的基本交通参数信息，并将存在交通冲突的一对车辆记为冲突车辆对；The above classification includes the basic traffic parameter information of vehicles in the outermost lane of the main road in the merge area of the expressway, and the basic traffic parameter information of the vehicles in the ramp lane of the merge area of the expressway, and a pair of vehicles with traffic conflicts is recorded as a conflicting vehicle pair;
每个冲突车辆对包括且仅包括一辆高速公路合流区主干道最外侧车道车辆和一辆高速公路合流区匝道车道车辆；Each conflicting vehicle pair includes and only includes one vehicle on the outermost lane of the main road in the expressway merge area and one vehicle on the ramp lane in the expressway merge area;
高速公路合流区存在交通冲突的车辆对的基本交通参数信息包括高速公路合流区主干道最外侧车道车辆的车头距离冲突点的距离为xi，高速公路合流区主干道最外侧车道车辆的车头距离冲突点的距离为xi处的速度大小为vi，高速公路合流区主干道最外侧车道车辆的车头距离冲突点的距离为xi处的速度大小为ai；以及，高速公路合流区匝道车道车辆的车头距离冲突点的距离为xj，高速公路合流区匝道车道车辆的车头距离冲突点的距离为xj处的速度大小为vj，高速公路合流区匝道车道车辆的车头距离冲突点的距离为xj处的速度大小为aj；i，j∈N+。The basic traffic parameter information of the vehicle pair with traffic conflict in the expressway merge area includes the distance between the front of the vehicle in the outermost lane of the main road in the expressway merge area and the distance from the conflict point to xi , the distance between the front of the vehicle in the outermost lane of the main road in the expressway merge area The speed at the distance from the conflict point to xi is vi , the speed at the distance from the front of the vehicle in the outermost lane of the main road in the expressway merging area to the conflict point isxi is ai ; and, the ramp in the expressway merging area The distance between the front of the vehicle in the lane and the conflict point is xj , the distance between the front of the vehicle on the ramp lane in the merge area of the expressway and the conflict point is xj , and the speed at the point is vj , the distance between the front of the vehicle on the ramp lane in the merge area of the expressway is the distance from the conflict point The velocity at a distance of xj is aj ; i, j∈N+ .
信息处理模块根据信息采集模块采集到的存在交通冲突的车辆对的基本交通参数信息首先进行运动学建模，然后计算提取交通冲突表征量归一化处理，接着建立危险度评估函数模型进行危险度评估，最后将处理得到的危险度评估结果发送给信息发布模块；The information processing module first carries out kinematic modeling according to the basic traffic parameter information of the vehicle pairs with traffic conflicts collected by the information collection module, then calculates and extracts the traffic conflict characterizations for normalization processing, and then establishes a risk assessment function model to carry out the risk assessment function model. assessment, and finally send the risk assessment result obtained from the processing to the information release module;
信息处理模块在进行运动学建模时，对高速公路合流区主干道最外侧车道车辆采用的运动学模型是匀减速运动模型，对高速公路合流区匝道车道车辆采用的运动学模型是匀加速运动模型；When the information processing module performs kinematic modeling, the kinematic model adopted by the vehicles on the outermost lane of the main road in the expressway merge area is a uniform deceleration motion model, and the kinematic model adopted by the vehicles on the ramp lane of the expressway merge area is a uniform acceleration motion model Model;
交通冲突特征量包括两个：冲突时间和冲突角度；Traffic conflict characteristic quantity includes two: conflict time and conflict angle;
冲突时间为存在交通冲突的两辆车辆到达冲突点的时间差，记为Δt，Δt越小，车辆进行避险的时间越少，则冲突的危险程度越高；Conflict time is the time difference between two vehicles in traffic conflict arriving at the conflict point, which is denoted as Δt. The smaller Δt is, the less the time for vehicles to avoid danger, the higher the risk of conflict;
冲突角度为存在交通冲突的两辆车辆达到冲突点的速度夹角，记为α，α越大，车辆冲突发生时对车辆的威胁就越大，则冲突的危险程度就越高；Conflict angle is the angle between the speeds of two vehicles in traffic conflict reaching the conflict point, which is denoted as α, the larger α is, the greater the threat to vehicles when vehicle conflict occurs, and the higher the risk of conflict;
具体计算方式如下：The specific calculation method is as follows:
这里，在计算冲突时间和冲突角度之前，先对合流区进行简化处理并进行相关物理量的标定，合流区简化图如图2所示。Here, before calculating the conflict time and conflict angle, the confluence area is simplified and the relevant physical quantities are calibrated. The simplified diagram of the confluence area is shown in Figure 2.
首先，设定合流区域内存在交通冲突的两辆车分别为车A和车B。设定车A行驶于主干道上，且车A从图中位置到冲突点位置的运动为匀减速运动，设定车B行驶于匝道上，且车B从图中位置到冲突点位置的运动为匀加速运动。First, the two vehicles in the merge area are set to be vehicle A and vehicle B respectively. Assume that car A is driving on the main road, and the movement of car A from the position in the figure to the conflict point is a uniform deceleration motion; set car B is driving on the ramp, and the movement of car B from the position in the figure to the conflict point for uniform acceleration.
记：车A的车头距离冲突点的距离为x1，车A的车头距离冲突点的距离为x1处的速度大小为v1，车A的车头距离冲突点的距离为x1处的加速度大小为a1。记：车B的车头距离冲突点的距离为x2，车B的车头距离冲突点的距离为x2处的速度大小为v2，车B的车头距离冲突点的距离为x2处的加速度大小为a2。由运动学方程可以得到：Note: the distance between the front of car A and the conflict point is x1 , the speed at which the distance between the front of car A and the conflict point is x1 is v1 , the acceleration at the distance between the front of car A and the conflict point is x1 The size is a1 . Note: the distance between the front of car B and the conflict point is x2 , the speed at which the distance between the front of car B and the conflict point is x2 is v2 , the acceleration at the point where the distance between the front of car B and the conflict point is x2 The size is a2 . From the kinematic equations, we can get:
对车A：For car A:
对车B：For car B:
由以上两个方程反解t1、t2，可以得到：Inversely solving t1 and t2 from the above two equations, we can get:
所以，存在交通冲突的车辆到达冲突点的时间差为：Therefore, the time difference between vehicles with traffic conflicts arriving at the conflict point is:
Δt＝|t1-t2| (5)Δt＝|t1 -t2 | (5)
冲突角度α来计算如下：The collision angle α is calculated as follows:
如图2所示，冲突角度用冲突车辆之间速度夹角来计算：As shown in Figure 2, the conflict angle is calculated by the speed angle between conflicting vehicles:
α＝|α1-α2| (6)α＝|α1 -α2 | (6)
式中，α——冲突角度；In the formula, α—conflict angle;
α1——存在交通冲突的前车车A的速度角度；α1 ——The speed angle of the vehicle A in front with traffic conflict;
α2——存在交通冲突的前车车B的速度角度。α2 ——The speed angle of the vehicle B in front with traffic conflict.
信息处理模块对交通冲突表征量进行归一化处理是指将量纲不同的因素转化为无量纲且取值均为[0.1]的指标，The information processing module normalizes the characterization of traffic conflicts, which means converting factors with different dimensions into dimensionless indicators with values of [0.1].
对冲突时间和冲突角度这两个冲突表征因素作归一化处理的具体操作如下：The specific operation of normalizing the two conflict characterization factors of conflict time and conflict angle is as follows:
对冲突时间的归一化处理：Normalization of conflict time:
就冲突时间来说，冲突危险程度随冲突时间的降低而增加，车辆在合流区的正常通过时间记为t0，为一个常量，且取值范围设定为：As far as the conflict time is concerned, the risk of conflict increases with the decrease of the conflict time. The normal passage time of vehicles in the merge area is recorded as t0 , which is a constant, and the value range is set as:
t0≥max(t1，t2)， (7)t0 ≥ max(t1 , t2 ), (7)
因此，把通过冲突时间判别危险度的归一化指标X设定为：Therefore, the normalized index X for judging the degree of risk by conflict time is set as:
上述指标满足冲突时间越小，指标值越大，冲突危险程度越高。The smaller the conflict time when the above indicators are satisfied, the larger the index value is, and the higher the risk of conflict is.
对冲突角度的归一化处理如下：The normalization of the conflict angle is as follows:
就冲突角度来说，冲突危险随着冲突角度α的增大而增加，因此，把冲突角度判别危险度的归一化指标Y设定为：As far as the angle of conflict is concerned, the risk of conflict increases with the increase of the angle of conflict α. Therefore, the normalized index Y for judging the degree of risk from the angle of conflict is set as:
Y＝1-cosα (9)Y=1-cosα (9)
上述指标同样满足冲突角度越大，指标值越大，冲突危险程度越高。The above indicators also satisfy that the greater the angle of conflict, the greater the index value, and the higher the risk of conflict.
信息处理模块中的危险度评估是利用交通冲突危险度模型计算交通冲突的危险度，可以反映交通冲突的潜在危险性，潜在危险性是指交通冲突演变成交通事故时可能造成的危害。而交通冲突危险度模型通过危险度评估函数表现，在建立危险度评估函数时候，是指以交通冲突时间归一化指标和交通冲突角度归一化指标为自变量、以交通冲突危险度为因变量建立的。危险度评估函数的数学表达式为：The risk assessment in the information processing module uses the risk model of traffic conflict to calculate the risk of traffic conflict, which can reflect the potential danger of traffic conflict. Potential danger refers to the possible harm caused by traffic conflict evolving into a traffic accident. The traffic conflict risk model is represented by the risk evaluation function. When establishing the risk evaluation function, it refers to the normalized index of traffic conflict time and the normalized index of traffic conflict angle as independent variables, and the risk of traffic conflict as the cause. variable is created. The mathematical expression of the risk assessment function is:
G＝X+m*Y (10)G＝X+m*Y (10)
其中：Gi为交通冲突危险度评估函数；Among them: Gi is the evaluation function of traffic conflict risk;
m为复数因子；m is a complex factor;
X，Y分别为交通冲突时间归一化指标和交通冲突角度归一化指标。X and Y are the normalized index of traffic conflict time and the normalized index of traffic conflict angle respectively.
基于交通冲突点危险度判别的高速公路合流区交通冲突分级预警方法，其特征在于，划分危险度等级划分的具体操作如下：在进行交通冲突危险度与交通冲突预警级别之间的转换对应操作之前，先进行两个归一化指标与危险度的转换对应，具体操作设定为，对两个范围为0到1的指标函数的值进行四等分，然后对每个等分范围作危险度的界定，这里的界定采用表格形式进行说明。具体如下表所示。The traffic conflict grading and early warning method in the expressway merge area based on the judgment of the risk of traffic conflict points is characterized in that the specific operation of dividing the risk level division is as follows: before performing the conversion corresponding operation between the traffic conflict risk degree and the traffic conflict early warning level , first carry out two normalization indicators and the corresponding conversion of the risk degree, the specific operation is set as, the value of the two index functions ranging from 0 to 1 is quartered, and then the risk degree is calculated for each equal range The definition here is explained in the form of a table. The details are shown in the table below.
信息处理模块进行危险度等级的划分是指对危险度评估函数值进行[0，1]之间的均分，均分为四等分，然后从小到大顺序排列进行等级划分，划分为非常危险、较为危险、一般危险、轻微危险四个等级；The division of the risk level by the information processing module refers to the equal division of the risk assessment function value between [0, 1], which is divided into four equal parts, and then arranged in order from small to large to classify as very dangerous , relatively dangerous, general dangerous, slightly dangerous four levels;
信息处理模块将处理得到的危险等级划分结果发送给信息发布模块；The information processing module sends the processed hazard level division result to the information publishing module;
信息发布模块根据从信息处理模块接收到的不同的危险等级划分结果进行不同的预警，具体如下：The information publishing module performs different early warnings according to the different danger level classification results received from the information processing module, as follows:
若是接收到信息处理模块发送的“非常危险”信息，则使用红色字进行预警信息的发布，提醒合流区车辆增大行车间距、请车主刹车减速，提醒管理者采取相应的合流区车辆管制措施，必要时进行车辆分车道通过合流区；If the "very dangerous" information sent by the information processing module is received, the red word will be used to release the early warning information, reminding the vehicles in the merging area to increase the driving distance, asking the owner to brake to slow down, and reminding the manager to take corresponding vehicle control measures in the merging area. Divide vehicles into lanes to pass through the merge area when necessary;
若是接收到信息处理模块发送的“较为危险”信息，则使用橙色字进行预警，提醒合流区车辆拉开行车间距、请车主明显减慢车速，提醒管理者采取相应的合流区车辆管制措施，必要时限制单位时间内通过的车流量；If the "more dangerous" information sent by the information processing module is received, the orange word will be used for early warning, reminding the vehicles in the merging area to increase the driving distance, asking the owner to slow down the speed obviously, and reminding the manager to take corresponding vehicle control measures in the merging area. Limit the traffic flow per unit time;
若是接收到信息处理模块发送的“一般危险”信息，使用黄色字进行预警，提醒合流区车辆注意保持车距、请车主减速慢行，提醒管理者采取相应的合流区车辆管制措施，必要时进行车辆分时间段通过合流区；If you receive the "General Danger" information sent by the information processing module, use the yellow word to give an early warning, remind the vehicles in the merge area to pay attention to maintaining the distance between vehicles, ask the owner to slow down, and remind the manager to take corresponding vehicle control measures in the merge area. Vehicles pass through the merge area in different time periods;
若是接收到信息处理模块发送的“轻微危险”信息，使用蓝色字进行预警，提醒合流区车辆注意保持车距、小心慢行。If the "slight danger" information sent by the information processing module is received, the blue word will be used for early warning, reminding the vehicles in the merge area to keep the distance between vehicles and drive slowly.
需要说明的是，以上具体实施方式仅供在具体实施时参考使用，此外还有可以延伸的地方，比如冲突时间的计算方法还有其他方式，但需要明晰的是本专利所述的方法核心内容仍是本专利的保护对象。It should be noted that the above specific implementation methods are only for reference during specific implementation. In addition, there are still places that can be extended. For example, there are other methods for calculating the conflict time, but what needs to be clarified is the core content of the method described in this patent. Still be the object of protection of this patent.
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| CN201910521773.7ACN110264713A (en) | 2019-06-17 | 2019-06-17 | A kind of highway merging area traffic conflict early warning system differentiated based on danger level |
| CN202010150433.0ACN111477002B (en) | 2019-06-17 | 2020-03-06 | A Traffic Conflict Early Warning System in the Convergence Area of Expressways Based on Danger Degree |
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| CN201910521773.7APendingCN110264713A (en) | 2019-06-17 | 2019-06-17 | A kind of highway merging area traffic conflict early warning system differentiated based on danger level |
| CN202010150433.0AExpired - Fee RelatedCN111477002B (en) | 2019-06-17 | 2020-03-06 | A Traffic Conflict Early Warning System in the Convergence Area of Expressways Based on Danger Degree |
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