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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
Inventor： Qiqi XU
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20210150898A1
公开(公告)日：2021-05-20
申请号：US17034111
申请日：2020-09-28
Inventor： Qiqi XU
Abstract: The present disclosure discloses a method for controlling traffic signals and apparatus, and a storage medium. The specific implementation solution is: obtaining degrees of congestion detected at an intersection at respective time periods; clustering the time periods based on the degrees of congestion to obtain a plurality of clusters; determining target clusters from the plurality of clusters based on the degrees of congestion, wherein the degrees of congestion at the time periods included in the target clusters are greater than those at the time periods included in the rest clusters; determining a peak period based on the time periods included in the target clusters; and controlling the traffic signals during the peak period by using a signal control configuration corresponding to the peak period.
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公开(公告)号：US20210134152A1
公开(公告)日：2021-05-06
申请号：US17003587
申请日：2020-08-26
Inventor： Xuan HUANG , Fan YANG , Qiqi XU , Chengfa WANG , Yongyi SUN , Hui YUAN
Abstract: A time-segmented signal timing method is related to the field of intelligent transportation. The specific implementation is: obtaining traffic volume data of a target intersection in each period of time of N consecutive days, N being an integer greater than 1; performing curve fitting on the traffic volume data to determine a traffic volume curve corresponding to the target intersection of each day; determining calculating respective target points in the traffic volume curve with second derivatives satisfying a preset condition; and performing time-segmented signal timing on a traffic light at the target intersection based on time points corresponding to the respective target points.
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公开(公告)号：US20210358298A1
公开(公告)日：2021-11-18
申请号：US17115328
申请日：2020-12-08
Inventor： Qiqi XU , Fan YANG , Yongyi SUN , Chengfa WANG , Xuan HUANG
Abstract: A method and apparatus for adjusting channelization of a traffic intersection are proposed. The specific implementation of the method is: obtaining a first traffic characteristic of vehicles at each of a plurality of target positions in a process of vehicles in a target traveling direction traveling through the traffic intersection from upstream to downstream in a preset first time period; generating first traffic change information of the traffic intersection based on the first traffic characteristic at each of the plurality of target positions; and in response to that the first traffic change information satisfies a preset first change distribution, generating channelization adjustment information for non-motorized vehicle lanes of the traffic intersection.
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5.发明申请公开(公告)号：US20210142663A1
公开(公告)日：2021-05-13
申请号：US17037421
申请日：2020-09-29
Inventor： Xuan HUANG , Fan YANG , Hui YUAN , Yongyi SUN , Chengfa WANG , Qiqi XU
Abstract: A timing control method and a timing control apparatus for a signal light, and a storage medium are disclosed. The method includes: determining an optimal passing-through duration of a signal light corresponding to each passing-through direction at a target intersection according to traffic in the passing-through direction; determining a range of values for each variable in a calibration function corresponding to the target intersection according to a constraint to each passing-through direction at the target intersection, wherein the calibration function comprises the optimal passing-through duration corresponding to each passing-through direction and a variable corresponding to a final passing-through duration in each passing-through direction; and calculating the final passing-through duration in each passing-through direction in a case where the calibration function meets a preset condition, according to the range of values for each variable.
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公开(公告)号：US20210142660A1
公开(公告)日：2021-05-13
申请号：US16926313
申请日：2020-07-10
Inventor： Xuan HUANG , Fan YANG , Yongyi SUN , Chengfa WANG , Hui YUAN , Qiqi XU
IPC: G08G1/01
Abstract: A method and an electronic device for detecting a vehicle queue length are disclosed. The method includes: when determining that a traffic light turns green, obtaining vehicle information of each vehicle on a lane section to be detected in a first preset time period before a time point when the traffic light turns green; determining at least one vehicle that has a static position and a static time point on the lane section to be detected; determining a first queuing vehicle and a last queuing vehicle on the lane section to be detected based on the at least one vehicle that has the static position and the static time point on the lane section to be detected; and determining a vehicle queue length on the lane section to be detected based on a position of the first queuing vehicle and a position of the last queuing vehicle.
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