84results about How to "Improve traffic operation efficiency" patented technology

The invention discloses a road section pedestrian street-crossing sensing control method based on the number of pedestrians to cross a street. The method comprises the following steps of: (1) acquiring control threshold information; (2) acquiring a video image in real time and extracting the information about the number of the pedestrians to cross the street; and (3) judging, and controlling switching of signal lights. By adoption of the road section pedestrian street-crossing sensing control method, the actual traffic condition in urban and rural road environments is fully considered, the pedestrians to cross the street serve as top-priority objects, the information about the number of the pedestrians to cross a sidewalk is acquired by computer vision detection, and the signal lights areswitched according to the information, so that the pedestrians can safely cross the street, time and space resources of road traffic are reasonably excavated, and the traffic operating efficiency in the urban and rural road environments is effectively improved. Compared with the prior art for vehicle identification and pedestrian identification, the method has the advantages of high detection identification accuracy rate and high control reliability.

The present invention discloses an intelligent traffic road management method and system. A queen traffic flow monitoring device is configured to monitor and identify traffic flow; and an intelligent display guidance mark capable of variably indicating the driving direction is embedded in advance on the forward direction road between the queen traffic flow monitoring device and a sidewalk, a fixed guidance mark is arranged at the remaining roads of the forward direction road, and a road control module is in communication connection with the analysis control center. A guidance board and a traffic flow monitoring device are configured to allow vehicles to queen up according to the guidance identification, a display guidance lamp is arranged between the queen line and a sidewalk marking and is configured to intelligently display the pavement guidance identification and perform automatically intelligently guide the queen traffic flow so as to allow the traffic running efficiency to be higher and the mode to be more rational; the intelligent traffic road management method and system are able to reduce manpower and material resources and relieve the traffic pressure with no need for human traffic direction; and moreover, the intelligent traffic road management method and system are further provided with a people flow detection module which is configured to perform intelligent monitoring of the people flow and regulate the traffic flow and the people flow passing time so as to optimize the system to be more intelligent.

The invention discloses a vehicle dynamic path navigational system. The system consists of a traffic information acquisition subsystem, a communication subsystem, a traffic information comprehensive processing platform and a traffic information publishing subsystem, wherein the traffic information comprehensive processing platform processes and analyzes the traffic information data to obtain inducing information, the traffic information publishing subsystem publishes the inducing information to a site road, the communication subsystem is based on general packet radio service (GPRS) or code division multiple access (CDMA), the traffic information comprehensive processing platform is provided with a data analysis and forecast system and a dynamic path optimization and dynamic traffic flow balanced system. In the invention, the improved Dijkstra algorithm is utilized in the vehicle dynamic path navigational system, the road weight based on the travel time is considered, and the traveling path is optimized, the real-time traffic information and the inducing information are quickened to be published, thereby the traffic operating efficiency of a road network is effectively enhanced, the circumstance that the number of the vehicles exceeds the actual traffic capacity of the road is avoided, and the problem of traffic jam is improved.

The invention relates to an intersection signal control method based on public transport priority. According to the method, intersection lane arranging information and real-time traffic flow information of all entrance passages are considered and combined with a vehicle jamming detection device and two groups of intersection signal lamps, a detector is triggered when an exit passage of an intersection is in a jamming state, an intervention signal control scheme is generated through automatic control of a computer to ensure timely stopping of social vehicles, a jamming area is prevented from spreading to the interior area of the intersection to affect traffic of the other direction, and at the same time public transportation vehicles are allowed to continue to run in a public transportation lane to ensure the public transport priority. Therefore, jamming of downstream road sections is prevented from affecting traffic of the intersection near upstream in an urban road peak traffic hour or when an sudden accident happens, influence of traffic jam on irrelevant traffic flow of the intersection is reduced, the public transport priority is guaranteed at the same time, and traffic circulation efficiency of a road network is improved. The invention belongs to the technical field of traffic signal control.

The invention provides an adaptive coordinate control method for an urban area traffic signal, wherein a plurality of control optimization algorithms with different characteristics are integrated. Through establishing a timing module, a signal timing parameter at an area intersection is optimized according to the actual condition of a traffic flow. No matter the mounting position of a traffic flow detector in a road segment, control technology can be reasonably selected according to a configuration position condition. The method is suitable for signal adaptive coordination control with different traffic states in the area. Based on traffic requirements of the intersection in a plurality of periods, for improving integral traffic operation efficiency of an area, a phase requirement of a single intersection is comprehensively analyzed. An area signal adaptive coordination control strategy is made. Furthermore overflow (deadlock) detection and phase different optimization are performed on the traffic flow of the road segment, thereby reducing un-stability and potential safety hazard of the traffic flow caused by a real-time adaptive system, improving area traffic operation condition, alleviating traffic jam and improving passing capability of the area traffic.

The invention provides a CBTC (Communication Based Train Control) and regional interlocking integrated system and method, relating to the technical field of rail transit. The system comprises a train-train communication integrated device and a train-ground communication integrated device; in case of control with an automatic mode, the train-train communication integrated device acquires first location information, route entering application information and first line data information, processes the first location information and the route entering application information to obtain first route entering state information, and calculates first LMA (Limit Movement Authority) information according to the first line data information and the first route entering state information; in case of control with a backup mode and a manual mode, the train-ground communication integrated device acquires second location information and second line data information, and calculates second LMA information according to the second locationinformation and the second line data information, thus optimizing closed-loop control links, ensuring stability of the integrated system and improving rail transit operating efficiency.

The speed limit of a vehicle should ensure the efficiency and the safety, but an interactive relationship exists between the efficiency and the safety. Based on the safety constraint conditions, the invention comprises the following five steps: 1. establishing a limit speed model with respect to the safety based on the principle that the speed limit on a highway should ensure that the accident death rate is less than an acceptable tolerance value; 2. determining the limit speed and a 85% speed relation model; 3. establishing a traffic accident prediction model; 4. quantifying the traffic safety service level, wherein the accident rate is used as an index for quantifying the safety service level; and 5. establishing a time-cost function of a high-grade highway based on the 85% speed and the design speed, and establishing an objective function of the operating efficiency by using the minimum time-cost. The invention establishes a limit speed optimization model using the operating efficiency as the objective function, and can calculate the optimum speed limit in the specific benefit orientation by using the limit speed optimization model.

The embodiment of the invention discloses a traffic control method and device. The method comprises the steps of acquiring first historical traffic flow data of a first intersection in a first controlperiod, and the traffic flow data of the first intersection at each time period in M days; dividing the first control period into k sub-periods, and determining a first accumulated value; dividing the first control time period into k +1 sub-periods, and determining a second accumulated value; and determining a traffic control scheme of each sub-period according to the first historical traffic flow data of each sub-period in the k sub-periods, when the first accumulated value is smaller than a first preset threshold value, and the ratio of the first accumulated value to the second accumulatedvalue is smaller than a second preset threshold value.

The invention discloses a multi-level early warning system and method for a construction area based on vehicle road cooperation technology under a dynamic traffic flow. The system comprises a trafficflow information collection module which is used for collecting traffic flow information of a construction road; an early warning information processing module which is used for obtaining early warning parameter information with combination of the construction position and the vehicle information according to the traffic flow information and for determining whether to sent early warning information with combination of the early warning parameter information; and a vehicle-mounted control module which is used for collecting the vehicle information and sending the vehicle information to the early warning information processing module and receiving the early warning information. The system guides the driver to execute the driving strategy under different traffic conditions by real-time monitoring and tracking of the road traffic state and the current state of the vehicle, effectively controls the random convergence behavior of the vehicle, reduces the traffic delay caused by the random lane change, and improves the traffic efficiency. Meanwhile, through multi-level warning, the possible traffic accidents are reduced and the safety of the construction area is ensured.

The invention discloses a vehicle dynamic path navigation method for obtaining road condition video information in real time. The method comprises a navigation device firstly calculating at least one navigation path from the starting point to the destination according to the topological relation of the road nodes in navigation data; then, matching traffic camera information to the navigation path, calculating the path distance from each traffic camera point to vehicle current point, and meanwhile, carrying out ranking based on the path distance from each traffic camera point to the vehicle current point; and at last, obtaining and displaying real-time dynamic traffic video pictures. The invention also discloses a vehicle dynamic path navigation device for obtaining the road condition video information in real time. The device comprises a path programming module, a traffic camera data matching module, a dynamic traffic video displaying module and a comprehensive control module. Therefore, the traffic circulation efficiency of a road network can be effectively improved, and the problem of traffic jam is greatly improved.

The invention provides a traffic signal control system and method based on edge side online calculation. The system comprises vehicle-mounted terminal equipment, a signal machine and a signal lamp controller, wherein the vehicle-mounted terminal equipment is used for acquiring vehicle information data of an installed vehicle in real time, combining the vehicle information data into a vehicle information data packet and sending the vehicle information data packet to the annunciator; the signal machine is used for calculating and obtaining road condition parameters of each road section of the intersection according to the plurality of collected vehicle information data packets, outputting a current road passing state through a fuzzy comprehensive evaluation model, adjusting a signal timing scheme and sending the signal timing scheme to the signal lamp controller; and the signal lamp controller is used for performing adaptive control on the signal lamp according to the received signal lamp timing scheme. The system can detect and comprehensively analyze the traffic operation state of the intersection in real time; and intersection signal coordination adaptive control is realized.

The invention relates to a signal control period automatic division method. First, historical traffic flow data acquisition is performed, then the acquired data are divided according to certain granularity, then the divided data are cleaned and averaged, then period division is performed on the processed data, period merging is performed after period division, and finally, an obtained result is uploaded to a corresponding signal machine. The invention provides the traffic signal control period automatic division method, which is high in efficiency and is more precise, saves both time and labor, improves traffic operation efficiency, and facilitates trips of people.

The invention discloses a traffic jam coordinated control method and a traffic jam coordinated control system. The traffic jam coordinated control method includes the steps of inputting, namely, dividing passing of a current key intersection into four phases transformed sequentially, and measuring road occupancy rates and vehicle lengths of next road segments of all the phases and traffic flow information of a previous key intersection; computing, namely, computing traffic capacities of the four phases transformed sequentially, wherein the traffic capacity of any phase is equal to a value obtained by multiplying the road occupancy rate of the next road segment of the phase by the vehicle length of the road segment of the phase and then dividing the product by the traffic flow information of the previous key intersection; comparing, namely, comparing the traffic capacities of the four phases transformed sequentially so as to obtain the phase with the maximum traffic capacity; outputting, namely, when the phase with the maximum traffic capacity is displayed as a green light, subjecting the green light to delaying with a first preset time, and when the phase with the maximum traffic capacity is displayed as a red light, switching the red light to the green light and continuing a second preset time. The traffic jam coordinated control method can solve sudden traffic jam.

The invention discloses a method for calculating traffic capacities of intersection entrance lanes under influences of upstream harbor stations. According to the method, an intersection entrance lane related traffic characteristic data set is constructed; a road capacity reduction factor of influences in the process that buses queue for arrival and overflow at the rush hour is determined through analyzing the traffic characteristics in the process that the buses overflow and queue to wait for arrival; a reduction coefficient of influences, on the road capacity, of each bus lane change behavior is determined through analyzing influences, on social vehicle running characteristics, of the bus lane change process; bus lane change frequency, influencing the traffic capacity, of each entrance lane of the intersection is determined through analyzing selection characteristics of the buses at the intersection entrance lanes; and traffic capacities of the intersection entrance lanes under the influences of the upstream harbor stations are determined. Through quantifying the traffic capacities, influenced by the upstream harbor stations, of the intersection entrance lanes, the traffic states of the intersection entrance lanes are better grasped, and traffic jam can be pre-warned in advance, so that the traffic efficiencies of the intersection entrance lanes are improved.

The present invention discloses a regional traffic control method based on traffic efficiency and network energy consumption, and belongs to the traffic control field. The method mainly comprises the steps of real-timely detecting the traffic data, and carrying out the real-time data transmission processing and the real-time traffic control. By the regional traffic control method of high traffic efficiency and low network energy consumption of the present invention, the contradiction between the traffic efficiency and the network energy consumption generated by the optimization object difference in a traffic system is solved, when the urban traffic is about to jam, by turning on a traffic valve controller provided by the present invention, the purposes of improving the traffic operation efficiency and reducing the automobile fuel oil consumption are achieved.

The invention discloses a traffic light system. A key point of the technical scheme is that the traffic light system mainly comprises two distance measurer devices, two sets of traffic light devices and two cameras, wherein each distance measurer device comprises a button switch, a distance measurer and a stepper motor, which are sequentially arranged on a lamp post from top to bottom; the lamp post is fixed on an object stage at the lower end; an illumination lamp is arranged at the upper end of the lamp post; each traffic light device comprises a vehicle passing traffic light device and a pedestrian passing traffic light device; each of the two cameras is arranged on one side of the corresponding vehicle passing traffic light device; the distance measurer devices, the traffic light devices and the cameras are connected through a control circuit. The traffic light system is applied to straight roads or non-crossroads, and aims to ensure the safety of pedestrians when the pedestrians pass through zebra crossings.

The invention provides a signalized intersection operation state prediction method and system based on an LSTM model. The method comprises the steps that floating vehicle data of a certain area are acquired through the mobile internet; extracting related data matched with a certain signalized intersection within a certain period of time according to the floating vehicle data, and screening the data; performing normalization processing on the screened data, dividing the data into a training data set and a test data set, training the data in the training data set through an LSTM model, and testing the trained model through the test data set to obtain a prediction model of the signalized intersection; and predicting the operation state of the signal intersection through newly collected real-time data according to the obtained prediction model of the signal intersection. According to the method, the operation state of the signal intersection is predicted through the mobile internet floating vehicle data, and the traffic operation efficiency of the signal intersection area is improved.

The invention discloses an intelligent traffic management big data analysis system, belonging to a traffic analysis system. The system comprises an intelligent traffic distributed scheduling system and a workflow engine. The intelligent traffic distributed scheduling system and the workflow engine are respectively connected with an intelligent traffic data collection system, an intelligent traffic data storage system, an intelligent traffic data analysis system and an intelligent traffic data service system through intelligent traffic distributed data buses. Synergistic linkage control of cross-region cross-mode wide range of traveling regulation and control and network induction is realized by use of a big data analysis technology, a coordinated operation system of traffic systems, such as intercity highways, railways, civil aviation and so on, is formed, and the overall performance of the traffic operation management is intensified, so that the traffic perception intelligence level is improved; and a complete traffic monitoring system is established, thereby assisting traffic decision and improving the traffic operation efficiency.

The invention relates to a method and a system for recommending a coordination route and a coordination scheme for urban traffic. The method is based on traffic state data. The traffic capacity of thebranch is ensured; control by coordination, phase differences of signal lamps are automatically set, parking time of vehicles at all intersections is shortened, so that it is guaranteed that when thevehicles arrive at all the intersections, the red light waiting time is minimum, particularly, the vehicles on a trunk line can run smoothly, urban traffic operation efficiency is improved, participation of personnel is reduced, and coordination routes of the intersections capable of being coordinated are automatically recommended. The output result of the method can be used for evaluating coordination route recommendation, and can also be used for outputting a coordination route recommendation scheme and implementing an actual urban traffic road section. By performing real-time coordinationcontrol on the urban traffic trunk line, the urban traffic flow can flow smoothly, and the modernization construction and improvement of the urban comprehensive traffic control capability are promoted.

The invention discloses a method for controlling left turn of a vehicle at a gateway of a road section building by utilizing a median separator. In the method, a median separator(3) is arranged in the middle of a road(1), and a vehicle turning road(5), a turnaround road(4) and a pedestrian and bicycle road(6) are arranged in the median separator(3); roads on both sides of the median separator(3) are communicated; due to the arrangement of the median separator in the road section and the arrangement of the vehicle road and the pedestrian and motorless vehicle road on the median separator, an indirect turning-left channel is provided for vehicles which are forbidden to turn left to drive out of the building, the number of conflict points caused by the direct movement and the left turning of vehicles are reduced, and simultaneously the interference on vehicles due to the crossing of pedestrians and motorless vehicles on both sides of the building is avoided, thereby facilitating the improvement of traffic efficiency and the lowering of accident threat.

The invention provides a route control method and device. The method comprises the steps that a target zone into which a car is about to drive is determined; the target zone is locked; after it is determined that the vehicle drives away from the target zone, the target zone is unlocked. According to the route control method and device, the operation route of the vehicle is managed through a smaller unit, zone, the cost and system complexity are reduced, and the route utilization efficiency and the track traffic operation efficiency are improved.

The invention provides a vacuum pipeline traffic train. The train is composed of a head/tail train body 1A and an intermediate train body 1B which are provided with train casings and movable seat carts arranged in the train casings respectively, and the bottoms of the movable seat carts are provided with traveling wheels; the head/tail train body 1A and the intermediate train body 1B are internally provided with tracks for the traveling wheels to move on respectively; the train casings constituting the head/tail train body 1A and the intermediate train body 1B are in sealed connection; the intermediate train body 1B is in sealed connection; a plurality of seats are arrayed on the movable seat carts according to a certain rule; the train casings are manufactured by means of an integrated molding process without welding seams or joint seams and made of high-strength and light metal or alloy. The vacuum pipeline traffic train is excellent in structural integrity, reliable in air tightnessand good in mechanical property, marshalling and in-line running of the train is facilitated, and large-scale factory manufacturing is facilitated.

The present application discloses a video-based main road cooperative signal machine control method, which includes: installation of video detectors at each intersection of the main road; data acquisition and communication of a single intersection; data acquisition and storage of multiple intersections; data processing of the main road coordination signal control; signal command release service and signal light control. The application adopts active video detection technology, which can accurately detect the traffic state of multiple intersections of the main road, formulate an optimized signal control scheme, provide optimal decision and emergency plan for the control of traffic light of the main road, improve the traffic efficiency of intersections and effectively alleviate traffic congestion on trunk roads.

The invention provides a self-sensing pavement structure of a road or a bridge, belonging to the technical field of traffic monitoring. The invention solves the problem that the external or internal sensors adopted for monitoring the traffic data at present have high manufacturing cost and short service lives. The self-sensing pavement structure comprises a self-sensing concrete material layer, a plurality of electrodes and leading-out leads, wherein the electrodes are embedded inside the self-sensing concrete material layer; each electrode is led out of the self-sensing concrete material layer via the leading-out leads; the embedded depth of the electrodes is more than 1cm; the distance between the electrodes and the bottom surface of the self-sensing concrete material layer is also more than 1cm; and the thickness of the self-sensing concrete material layer is 3-15cm. The self-sensing pavement structure is suitable for monitoring the traffic parameters.

The invention provides an intelligent intersection intelligent traffic signal lamp system and a vehicle-road cooperation intelligent traffic signal lamp. A C-V2X module in the signal lamp is in communication connection with a signal lamp control module and a communication module through serial ports; the C-V2X module is used for outputting a control instruction to the signal lamp control module and controlling the signal lamp control module to execute a lamp control command according to the control instruction, and used for acquiring a real-time traffic event of a local intersection from the cloud control platform through the communication module, and pushing the real-time traffic event and the current phase timing information. According to the vehicle-road cooperation intelligent traffic signal lamp, a traditional signal machine and a signal lamp on a lamp pole can be combined, the function of vehicle-road cooperation can be fused through a C-V2X module, normal output of a phase scheme can be ensured, real-time traffic events of a local intersection and current phase timing information can be pushed, dynamic information interaction with vehicles on the front road is realized, and the traffic operation efficiency is improved.