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公开(公告)号：US20210398420A1
公开(公告)日：2021-12-23
申请号：US17466039
申请日：2021-09-03
申请人： IHI Corporation
摘要： A system includes: a laser radar irradiating a detection region and detecting a reflected signal of the laser by a moving body in the detection region at a predetermined cycle, a vehicle detecting unit detecting a vehicle existing in the detection region based on the reflected signal detected by the laser radar, a vehicle tracking unit setting a plurality of divided regions in the detection region and detecting a moving direction of the vehicle based on a presence or absence of the vehicle in each of the divided regions detected by the vehicle detecting unit at each predetermined cycle, and a traffic flow calculating unit calculating a traffic flow data including a number of vehicles in each of the divided regions detected by the vehicle detecting unit and the moving direction of each vehicle detected by the vehicle tracking unit.
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公开(公告)号：US20210375129A1
公开(公告)日：2021-12-02
申请号：US16649652
申请日：2018-09-18
申请人： Weiping Meng
发明人： Weiping Meng
摘要： The invention relates to a traffic signal control field, discloses method and system of dynamic adjust signal time according to traffic flows in order to decrease stops/starts and green-light idle time: method includes: 1) get parameters of roadnet, signals; 2) get traffic flows; 3) I-neurons predict traffic flows about over thresholds; 4) P-neuron determine pre-judges according to over thresholds of intersection; 5) overall trade-off accept/reject, priority, schedule, and management of pre-judges, make and send I-instructions; system includes: 1) predict method package; 2) traffic data center or vehicle queue detecting equipments; 3) or vehicle in/out detectors; 4) traffic signals controllers. The predicting math model based signals net universal “A-A” serial method, support String mode control, enable roadnet traffic always run low energy consumption signals, avoid redundant stops/starts one time per period per vehicle per road-segment about 60 seconds and idle gasoline consumption, 30 vehicles about 30 minutes idle gasoline consumption per road-segment, and with solitary wave technique for dissolving jam-core, suddenly-happened big queue, provide a serial continuity solution means for signal control to dissolve congestion core, early congestion, delay arrival of a large cluster of congestion, improve efficiency of traffic signal response.
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公开(公告)号：US20210142664A1
公开(公告)日：2021-05-13
申请号：US17028892
申请日：2020-09-22
发明人： Qiqi XU
摘要： The present disclosure provides a traffic scheme control method and device. The method includes: obtaining green light waste time of each lane in each flow direction at a traffic intersection during a green light time period; obtaining a class saturation of each lane, and obtaining a class saturation of each flow direction according to the class saturation of each lane; obtaining a class saturation of a current control scheme based on the class saturation of each group of flow directions in the current control scheme; determining a class saturation of each candidate control scheme; and determining a target control scheme having a minimum class saturation, and when the class saturation of the current control scheme is greater than the minimum class saturation, controlling a signal controller to control a next traffic cycle at the traffic intersection according to the target control scheme.
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公开(公告)号：US10902720B2
公开(公告)日：2021-01-26
申请号：US15892486
申请日：2018-02-09
申请人： HERE Global B.V.
发明人： Bruce Bernhardt , Jingwei Xu , Ivan Ivanovic
IPC分类号： G08G1/083 , G01C21/34 , G05D1/02 , G08G1/01 , G08G1/0968 , G08G1/087 , G08G1/0967
摘要： A method is provided for traffic light signal phase and timing control (SPaT) status and notification message delivery. The method includes collecting traffic flow, incident, and emergency vehicle information on a predetermined portion of a road geometry network. The method dynamically adjusts the SPaT information for a traffic light signal in the predetermined portion of the road geometry network based on the information collected, and delivers a normal or abnormal SPaT status change with the adjusted SPaT information.
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公开(公告)号：US10861330B2
公开(公告)日：2020-12-08
申请号：US15976117
申请日：2018-05-10
发明人： Li Guang Sun
摘要： A method for obtaining signal light duration data is provided. The method includes obtaining, from running track data of plural positioning terminals, an intersection phase and a set of track sequences that correspond to the intersection phase. A state alternation sequence is obtained from the set of track sequences for the intersection phase. A signal light duration sample value of the intersection phase is obtained from the state alternation sequence, and signal light duration data is generated according to the signal light duration sample value.
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66.发明申请公开(公告)号：US20200320872A1
公开(公告)日：2020-10-08
申请号：US16753455
申请日：2019-07-16
发明人： Guangyu ZOU , Dan SHI , Lili ZHANG
摘要： A method to schedule intelligent traffic lights in real time based on digital infochemicals (DIs) is disclosed. The method takes advantage of DIs as medium to both predicate traffic flow and smooth the green/Cycle (g/C) ratio. First collect DIs, then update DIs by three actions including aggregation, evaporation, and propagation. After that, adjust the g/C ratio of the traffic light. DIs have the function of prediction due to the propagation that allows DIs reach the traffic earlier than the real traffic flow. On the other hand, DIs have the function of memory due to the evaporation that remembers the information of the historical traffic flow. The prediction and memory of DIs, as the reason why DIs are superior to the pure traffic flow, give the DI-based intelligent traffic light compelling advantages over the pure traffic based intelligent traffic light.
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公开(公告)号：US20200160701A1
公开(公告)日：2020-05-21
申请号：US16686335
申请日：2019-11-18
发明人： Farid Mobasser
摘要： Various embodiments are described herein for systems and methods of traffic management in a road network including pathways and at least one intersection. In at least one embodiment, the method comprises receiving data signals from corresponding one or more connected vehicles and generating an intersection model for each approach of each intersection at a first time, where the intersection model comprises estimated arrival times for incoming vehicles at each approach. The method further comprises generating at the first time, for each intersection, candidate traffic timing data signals based at least on the intersection model corresponding to all approaches at the intersection, and generating, at the first time, for each intersection, an optimized traffic timing data signal, which is configured to control the operation of one or more traffic signals at the intersection, and is generated based on the candidate traffic timing data signals and a predetermined optimization variable.
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公开(公告)号：US10176711B2
公开(公告)日：2019-01-08
申请号：US15497308
申请日：2017-04-26
发明人： Susan Kelly , Jian Huang
IPC分类号： G08G1/083
摘要： A device can determine a set of average vehicle entry rates using traffic data associated with an intersection and can determine a set of average vehicle wait time values. The device can generate one or more data structures that include a set of state values that include the set of average vehicle entry rates and a set of transition values. The device can determine a set of customer satisfaction rating values. The device can generate a prediction data structure that associates the set of state values with a set of traffic light cycle time values and one or more customer satisfaction rating values. The device can determine a current state value. The device can identify a state value and a traffic light cycle time value that is associated with a highest customer satisfaction rating. The device can provide the traffic light cycle time value to a traffic controller.
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公开(公告)号：US20170069204A1
公开(公告)日：2017-03-09
申请号：US15240366
申请日：2016-08-18
申请人： Ofer Hofman
发明人： Ofer Hofman
摘要： Described is a method to optimize traffic light activity and minimize traffic congestion. Traffic conditions are monitored by sensors and a controller dynamically controls the green light time to account for traffic conditions and enhance the traffic flow. In one example, the green light time of each lane is reduced or increased according to traffic flow in the lane.
摘要翻译： 描述了一种优化交通灯活动并最大限度地减少交通拥堵的方法。 交通状况由传感器监控，控制器动态控制绿灯时间，以考虑交通状况并增强交通流量。 在一个示例中，根据车道中的交通流量，每个车道的绿灯时间减少或增加。
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