Method and system for alleviating lane congestion

Abstract

The present invention discloses a method for alleviating lane congestion, including: obtaining position information and speed information of multiple vehicles on the same lane; dividing the multiple vehicles into different queues according to the position information; determining a low-speed queue according to the speed information; comparing the speed of the head vehicle of the low-speed queue with the maximum speed limit of the lane when the distance between the low-speed queue and the front queue adjacent to the low-speed queue is greater than a set distance threshold; sending a lane change or speed-up prompt message to the head vehicle when the difference between the maximum speed limit and the speed of the head vehicle is greater than a set speed difference threshold. Through the method of the present invention, when the low-speed queue has the conditions for speeding up, the low-speed queue is accelerated, thereby alleviating the lane congestion problem.

Description

Technical Field

[0001] The present invention relates to the field of vehicles and electronic technologies, and in particular to a method and system for alleviating lane congestion. Background Art

[0002] On a highway, a certain vehicle often has a low speed, which causes the overall speed of the queue of vehicles headed by it to be too low, causing lane congestion. Therefore, it is necessary to alleviate the lane congestion problem caused by the low speed of a certain vehicle. Summary of the invention

[0003] The starting point of the present invention is to provide a method and system for alleviating lane congestion, thereby solving the above-mentioned problems in the prior art.

[0004] An embodiment of the present invention provides a method for alleviating lane congestion, the method comprising:

[0005] Get the position and speed information of multiple vehicles on the same lane.

[0006] dividing the plurality of vehicles into different queues according to the position information,

[0007] Determine a low-speed queue according to the speed information,

[0008] When the distance between the low-speed queue and the queue ahead adjacent to the low-speed queue is greater than a set distance threshold, the speed of the head vehicle of the low-speed queue is compared with the maximum speed limit of the lane,

[0009] When the difference between the maximum limited speed and the speed of the leading vehicle is greater than a set speed difference threshold, a lane change or speed increase prompt message is sent to the leading vehicle.

[0010] Optionally, dividing the plurality of vehicles into different queues according to the position information comprises:

[0011] Multiple adjacent vehicles whose distances between each other are less than a set distance threshold are grouped into the same queue.

[0012] Optionally, determining the low-speed queue according to the speed information includes:

[0013] The average speed of each queue is compared with a set average speed threshold, and the queue with an average speed less than the average speed threshold is regarded as a low-speed queue.

[0014] Optionally, when the distance between the low-speed queue and the front queue is less than the distance threshold, or when the difference between the maximum limited speed and the speed of the leading vehicle is less than a set speed difference threshold, no lane change or speed-up prompt information is sent to the leading vehicle.

[0015] Optionally, the position information and the speed information are acquired with the aid of a roadside perception device, and the roadside perception device includes at least one of the following: a camera, a millimeter-wave radar, and a laser radar.

[0016] An embodiment of the present invention further provides a system for alleviating lane congestion, the system comprising an acquisition device and a processing device, wherein:

[0017] The acquisition device is used for:

[0018] Get the position and speed information of multiple vehicles on the same lane.

[0019] The processing device is used for:

[0020] dividing the plurality of vehicles into different queues according to the position information,

[0021] Determine a low-speed queue according to the speed information,

[0022] When the distance between the low-speed queue and the queue ahead adjacent to the low-speed queue is greater than a set distance threshold, the speed of the head vehicle of the low-speed queue is compared with the maximum speed limit of the lane,

[0023] When the difference between the maximum limited speed and the speed of the leading vehicle is greater than a set speed difference threshold, a lane change or speed increase prompt message is sent to the leading vehicle.

[0024] Optionally, dividing the plurality of vehicles into different queues according to the position information comprises:

[0025] Multiple adjacent vehicles whose distances between each other are less than a set distance threshold are grouped into the same queue.

[0026] Optionally, determining the low-speed queue according to the speed information includes:

[0027] The average speed of each queue is compared with a set average speed threshold, and the queue with an average speed less than the average speed threshold is regarded as a low-speed queue.

[0028] Optionally, when the distance between the low-speed queue and the front queue is less than the distance threshold, or when the difference between the maximum limited speed and the speed of the leading vehicle is less than a set speed difference threshold, no lane change or speed-up prompt information is sent to the leading vehicle.

[0029] Optionally, the acquisition device is a roadside perception device, and the roadside perception device includes at least one of the following: a camera, a millimeter wave radar, and a laser radar.

[0030] The method and system for alleviating lane congestion according to the embodiments of the present invention have at least the following advantages:

[0031] In the present invention, when the distance between a low-speed queue and a front queue adjacent to the low-speed queue is greater than a set distance threshold and the difference between the maximum speed limit of the lane and the speed of the head vehicle of the low-speed queue is greater than a set speed difference threshold, it is considered that the low-speed queue has speed-up conditions, and a lane change or speed-up prompt message is sent to the head vehicle of the low-speed queue to remind the head vehicle to change lanes to other lanes or speed up, thereby speeding up the low-speed queue and alleviating the lane congestion problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other details and advantages of the present invention will become apparent from the detailed description provided below. It should be understood that the following drawings are merely schematic and not drawn to scale, and thus cannot be regarded as limiting the present application. The following will be described in detail with reference to the drawings, wherein:

[0033] Figure 1 A flow chart of a method for alleviating lane congestion according to a specific embodiment of the present invention is shown.

[0034] Figure 2 A schematic diagram of a system for alleviating lane congestion according to another specific embodiment of the present invention is shown. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the present invention may be implemented without some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims unless clearly stated in the claims.

[0036] Now refer to Figure 1 , shows a flow chart of a method for alleviating lane congestion according to a specific embodiment of the present invention. Figure 1 As shown, the method includes:

[0037] Step S101, obtaining position information and speed information of multiple vehicles on the same lane.

[0038] The position information and speed information of multiple vehicles in the same lane can be obtained in any suitable manner, and these variations do not exceed the protection scope of the present invention. For example, the position information and speed information of multiple vehicles can be obtained by roadside sensing devices. The roadside sensing devices can include, but are not limited to, cameras, millimeter-wave radars, and lidar.

[0039] Step S102: Divide the multiple vehicles into different queues according to the position information.

[0040] Specifically, multiple vehicles that are adjacent to each other head to tail and have a distance between each pair less than a set distance threshold can be grouped into the same queue.

[0041] Step S103: Determine a low-speed queue according to the speed information.

[0042] Specifically, the average speed of each queue can be compared with a set average speed threshold, and the queue with an average speed less than the average speed threshold is taken as the low-speed queue. The average speed of the queue can be the average value of the speeds of all vehicles in the queue. The specific value of the average speed threshold can be set according to the actual situation (such as the lane design speed, weather conditions, etc.), and these variations do not exceed the protection scope of the present invention.

[0043] This process can be represented by the following formula:

[0044] V 队列i <T1, where V 队列i is the average speed of queue i, and T1 is the set average speed threshold.

[0045] Step S104: When the distance between the low-speed queue and the queue adjacent to it in front is greater than a set distance threshold, compare the speed of the leading vehicle of the low-speed queue with the maximum speed limit of the lane.

[0046] Specifically, the distance between the low-speed queue and the queue in front can be the distance between the leading vehicle of the low-speed queue and the trailing vehicle of the queue in front. The specific value of the distance threshold can be set according to the actual situation, and these variations do not exceed the protection scope of the present invention.

[0047] This process can be represented by the following formula:

[0048] |Dqueue i - queue i+1| > T2, where |Dqueue i - queue i+1| is the distance between queue i and queue i+1, and T2 is the set distance threshold.

[0049] Step S105: When the difference between the maximum speed limit and the speed of the leading vehicle is greater than a set speed difference threshold, send a lane change or speed increase prompt message to the leading vehicle.

[0050] The specific value of the speed difference threshold value can be set according to actual conditions, and these variations do not exceed the protection scope of the present invention.

[0051] The process can be expressed by the following formula:

[0052] V max -V 头车 >T3, V max is the maximum speed limit, V 头车 is the speed of the head vehicle in queue i, and T3 is the set speed difference threshold.

[0053] When the distance between the low-speed queue and the queue ahead is less than the set distance threshold, or when the difference between the maximum speed limit and the speed of the head vehicle of the low-speed queue is less than the set speed difference threshold, it can be considered that the low-speed queue does not have the conditions for speeding up, that is, speeding up may pose a safety hazard. Therefore, no lane change or speed-up prompt information is sent to the head vehicle of the low-speed queue.

[0054] After receiving the lane change or speed-up prompt information, the head vehicle in the low-speed queue can change lanes to other lanes (such as a slow lane) or speed up, thereby speeding up the low-speed queue, thereby alleviating the lane congestion problem.

[0055] Now refer to Figure 2 , shows a system for alleviating lane congestion according to another specific embodiment of the present invention. Figure 2 As shown, the system includes an acquisition device 201 and a processing device 202 .

[0056] The acquisition device 201 is used to acquire the position information and speed information of multiple vehicles on the same lane.

[0057] The processing device 202 is used to divide multiple vehicles into different queues according to the position information; determine the low-speed queue according to the speed information; when the distance between the low-speed queue and the front queue adjacent to the low-speed queue is greater than the set distance threshold, compare the speed of the head vehicle of the low-speed queue with the maximum speed limit of the lane; when the difference between the maximum speed limit and the speed of the head vehicle is greater than the set speed difference threshold, send a lane change or speed-up prompt information to the head vehicle.

[0058] Specifically, the processing device 202 may group multiple adjacent vehicles whose distances between each other are less than a set distance threshold into the same queue, and may compare the average speed of each queue with the set average speed threshold, and regard the queue with an average speed less than the average speed threshold as a low-speed queue. In addition, when the distance between the low-speed queue and the queue in front is less than the distance threshold, or when the difference between the maximum speed limit and the speed of the head vehicle of the low-speed queue is less than the set speed difference threshold, the processing device 202 does not send a lane change or speed-up prompt message to the head vehicle of the low-speed queue.

[0059] The acquisition device 201 may be any suitable electronic device with position and speed detection functions, such as a roadside sensing device. The roadside sensing device may include but is not limited to a camera, a millimeter wave radar, and a laser radar.

[0060] The processing device 202 may be any suitable electronic device with information receiving and sending and data processing functions. The processing device 202 may exchange information with the acquisition device 201 through a wired or wireless communication network, thereby receiving information from the acquisition device 201. The processing device 202 may also send lane change or speed increase instruction information to the corresponding vehicle through the wireless communication network. The processing device 202 may be set on the roadside or in the cloud.

[0061] Compared with the prior art, the method and system for alleviating lane congestion in the embodiments of the present invention have at least the following advantages:

[0062] In the present invention, when the distance between the low-speed queue and the queue in front adjacent to the low-speed queue is greater than the set distance threshold and the difference between the maximum speed limit of the lane and the speed of the head vehicle of the low-speed queue is greater than the set speed difference threshold, the low-speed queue is considered to have speed-up conditions, that is, speeding up at this time will not cause safety hazards. By sending a lane change or speed-up prompt message to the head vehicle of the low-speed queue to remind the head vehicle to change lanes to other lanes or speed up, the low-speed queue is accelerated, alleviating the lane congestion problem.

[0063] It should be noted that the above description is only for example and not for limitation of the present invention. In other embodiments of the present invention, the method may have more, fewer or different steps, and the order, inclusion and function of each step may be different from that described and illustrated. For example, generally multiple steps can be combined into a single step, and a single step can also be divided into multiple steps. For those of ordinary skill in the art, without paying creative work, the sequential changes of each step are also within the scope of protection of the present invention.

[0064] The technical solution of the present invention, in essence or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor or a microcontroller to perform all or part of the steps of the method described in each embodiment of the present invention.

[0065] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0066] Although the present invention has been disclosed as above with preferred embodiments, the present invention is not limited thereto. Any changes and modifications made by any person skilled in the art without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention, and therefore the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A method for alleviating lane congestion, characterized in that: The method comprises: Get the position and speed information of multiple vehicles on the same lane. The multiple vehicles are divided into different queues according to the position information, wherein multiple vehicles adjacent to each other whose distances between each other are less than a set distance threshold are divided into the same queue, A low-speed queue is determined according to the speed information, wherein the average speed of each queue is compared with a set average speed threshold, and a queue with an average speed less than the average speed threshold is regarded as a low-speed queue, When the distance between the low-speed queue and the queue ahead adjacent to the low-speed queue is greater than a set distance threshold, the speed of the head vehicle of the low-speed queue is compared with the maximum speed limit of the lane, When the difference between the maximum limited speed and the speed of the leading vehicle is greater than a set speed difference threshold, a lane change or speed increase prompt message is sent to the leading vehicle.

2. The method according to claim 1, wherein: When the distance between the low-speed queue and the front queue is less than the distance threshold, or when the difference between the maximum limited speed and the speed of the leading vehicle is less than the set speed difference threshold, no lane change or speed-up prompt information is sent to the leading vehicle.

3. The method according to claim 1, wherein: The position information and the speed information are obtained by means of a roadside sensing device, wherein the roadside sensing device includes at least one of the following: a camera, a millimeter wave radar, and a laser radar.

4. A system for alleviating lane congestion, characterized in that: The system comprises an acquisition device and a processing device, wherein: The acquisition device is used for: Get the position and speed information of multiple vehicles on the same lane. The processing device is used for: The multiple vehicles are divided into different queues according to the position information, wherein multiple vehicles adjacent to each other whose distances between each other are less than a set distance threshold are divided into the same queue, A low-speed queue is determined according to the speed information, wherein the average speed of each queue is compared with a set average speed threshold, and a queue with an average speed less than the average speed threshold is regarded as a low-speed queue, When the distance between the low-speed queue and the queue ahead adjacent to the low-speed queue is greater than a set distance threshold, the speed of the head vehicle of the low-speed queue is compared with the maximum speed limit of the lane, When the difference between the maximum limited speed and the speed of the leading vehicle is greater than a set speed difference threshold, a lane change or speed increase prompt message is sent to the leading vehicle.

5. The system according to claim 4, wherein: When the distance between the low-speed queue and the front queue is less than the distance threshold, or when the difference between the maximum limited speed and the speed of the leading vehicle is less than the set speed difference threshold, no lane change or speed-up prompt information is sent to the leading vehicle.

6. The system according to claim 4, wherein: The acquisition device is a roadside perception device, and the roadside perception device includes at least one of the following: a camera, a millimeter wave radar, and a laser radar.

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