Lane intersection accident prevention warning method and system

Abstract

The present application relates to a lane intersection accident prevention warning method and system, the method comprising: obtaining main road driving data of the main road; comparing the number of main road vehicles with the preset number of vehicles to obtain a first prompt information that needs to be displayed to the current auxiliary road vehicle on the auxiliary road, and sending the first prompt information to a prompt device; obtaining the auxiliary road vehicle speed of the current auxiliary road vehicle on the auxiliary road; judging whether the current auxiliary road vehicle will collide with the main road vehicle based on the auxiliary road vehicle speed of the current auxiliary road vehicle, the main road vehicle speed, the first distance information, and the second distance information; if so, generating a second prompt information that needs to be displayed to the current auxiliary road vehicle on the auxiliary road, and sending the second prompt information to the prompt device. The present application reduces the possibility of traffic accidents between auxiliary road vehicles entering the main road and main road vehicles, reduces the interference of auxiliary road vehicles entering the main road with main road vehicles driving normally on the main road, and improves the safety of auxiliary road vehicles entering the main road.

Description

Technical Field

[0001] The present application relates to the field of traffic prevention, and in particular to a lane intersection accident prevention warning method and system. Background Art

[0002] Auxiliary roads are auxiliary roads built next to the main road to relieve the transportation pressure of the main road. They are usually located on both sides of the main road and separated from the main road by isolation belts.

[0003] There are often some intersections where there is no auxiliary road, that is, most of the auxiliary road vehicles need to merge directly into the main road. When the auxiliary road vehicles merge from the auxiliary road into the main road, if the driver is not paying attention and the speed is fast, there is a great possibility of traffic accidents between the auxiliary road vehicles and the main road vehicles. Even if no traffic accident occurs, it may greatly interfere with the main road vehicles driving normally on the main road. In order to reduce the possibility of traffic accidents between auxiliary road vehicles entering the main road from the auxiliary road and main road vehicles, the present application provides a lane intersection accident prevention warning method. Summary of the invention

[0004] In order to reduce the possibility of traffic accidents between auxiliary road vehicles entering the main road from the auxiliary road and main road vehicles, the present application provides a lane intersection accident prevention warning method and system.

[0005] In a first aspect, the present application provides a lane intersection accident prevention warning method, which adopts the following technical solution:

[0006] A lane intersection accident prevention warning method, comprising:

[0007] Acquire main road traffic data of the main road, wherein the main road traffic data includes the number of vehicles on the main road and the driving speed of vehicles on the main road;

[0008] Compare the number of vehicles on the main road with the preset number of vehicles to obtain first prompt information that needs to be displayed to the current vehicles on the auxiliary road, and send the first prompt information to the prompt device;

[0009] Obtaining the auxiliary road vehicle travel speed of the current auxiliary road vehicle on the auxiliary road;

[0010] Acquire first distance information of the current auxiliary road vehicle reaching the intersection of the main road and the auxiliary road, and acquire second distance information of the current main road vehicle reaching the intersection;

[0011] Determining whether the current auxiliary road vehicle will collide with the main road vehicle based on the auxiliary road vehicle driving speed, the main road vehicle driving speed, the first distance information, and the second distance information;

[0012] If so, a second prompt message is generated to be displayed to the current auxiliary road vehicle, and the second prompt message is sent to the prompt device. The second prompt message includes a target speed that the current auxiliary road vehicle needs to reach after accelerating or decelerating.

[0013] By adopting the above technical scheme, people on the auxiliary road vehicle can make a preliminary judgment before entering the intersection based on the corresponding content of the first prompt information and the second prompt information displayed by the prompt device, and adjust the speed of the auxiliary road vehicle accordingly according to the situation of the main road vehicles, thereby reducing the possibility of traffic accidents between auxiliary road vehicles entering the main road from the auxiliary road and main road vehicles, reducing the interference of auxiliary road vehicles on main road vehicles driving normally on the main road after entering the main road, and improving the safety of auxiliary road vehicles entering the main road.

[0014] Optionally, the generating of the second prompt information to be displayed to the current auxiliary road vehicle includes:

[0015] If there is a rear vehicle behind the current auxiliary lane vehicle, and the distance between the current auxiliary lane vehicle and the rear vehicle is not greater than a first vehicle distance threshold, then calculating the speed that needs to be reached after acceleration, and taking the speed reached after acceleration as the target speed;

[0016] If there is a rear vehicle behind the current auxiliary lane vehicle, and the target speed is the speed reached after deceleration, the second prompt information further includes prompt information for prompting the rear vehicle to decelerate the current auxiliary lane vehicle.

[0017] By adopting the above technical solution, when the distance between the rear vehicle and the current auxiliary road vehicle is not greater than the first vehicle distance threshold, the current auxiliary road vehicle is close to the rear vehicle. If the current auxiliary road vehicle slows down to avoid the current main road vehicle at this time, it is easy to rear-end the vehicle behind the current auxiliary road vehicle. As a result, the rear vehicle can understand the deceleration of the auxiliary road vehicle in front according to the second prompt information, thereby reducing the possibility of a traffic accident between the current auxiliary road vehicle and the rear vehicle.

[0018] Optionally, the calculating the speed to be achieved after acceleration and taking the speed to be achieved after acceleration as the target speed includes:

[0019] Acquire a first speed interval for safely entering the main road based on the auxiliary road vehicle driving speed of the current auxiliary road vehicle;

[0020] If there is a front vehicle in front of the current auxiliary road vehicle that has not yet entered the main road, obtaining the driving speed of the front vehicle;

[0021] Acquire a second speed interval in which the current auxiliary lane vehicle does not collide with the front vehicle, the second speed interval being within the first speed interval;

[0022] The target speed is selected based on the second speed range.

[0023] By adopting the above technical solution, the possibility of a traffic accident between the current auxiliary road vehicle and the vehicle ahead is reduced.

[0024] Optionally, the first speed interval includes a first speed maximum value;

[0025] The obtaining of the first speed interval for safely entering the main road based on the current driving speed of the auxiliary road vehicle comprises:

[0026] Taking a speed interval greater than the current auxiliary road vehicle travel speed as the first speed interval;

[0027] Obtaining the current traffic flow within a first preset road section from the intersection;

[0028] Obtaining traffic flow level information corresponding to the current traffic flow;

[0029] A safe speed value of the auxiliary road corresponding to the vehicle flow level information is obtained, and the safe speed value is used as the first maximum speed value.

[0030] By adopting the above technical solution, the greater the current traffic volume, the smaller the safe speed value is, in order to improve the safety of auxiliary road vehicles entering the main road, thereby improving the safety of auxiliary road vehicles entering the main road.

[0031] Optionally, the prompt device includes a plurality of prompt screens arranged along the extension direction of the auxiliary road;

[0032] The sending of the second prompt information to the prompt device, wherein the second prompt information includes a target speed to be reached after the current auxiliary road vehicle accelerates or decelerates, and further includes:

[0033] Determining whether the auxiliary lane vehicle driving speed of the current auxiliary lane vehicle is not less than a speed threshold;

[0034] If so, the second prompt information is sent to the plurality of prompt screens respectively, so that the plurality of prompt screens all provide prompts to the current auxiliary lane vehicle.

[0035] By adopting the above technical solution, the possibility of people in the current auxiliary road vehicle with a faster speed viewing the prompt content of the prompt device is improved.

[0036] Optionally, the obtaining of the second distance information of the current main road vehicle reaching the intersection includes:

[0037] If the number of the main road vehicles is greater than one, and the vehicle distance between the plurality of main road vehicles along the extension direction of the main road is not greater than a second vehicle distance threshold, the vehicle farthest from the intersection among the plurality of main road vehicles is taken as the current main road vehicle.

[0038] By adopting the above technical solution, the possibility of a secondary road vehicle entering the main road and colliding with a vehicle behind the current main road vehicle is reduced when there are multiple main road vehicles on the main road and the distance between the multiple main road vehicles is small.

[0039] In a second aspect, the present application provides a lane intersection accident prevention warning device, which adopts the following technical solution:

[0040] A lane intersection accident prevention warning device, comprising:

[0041] A first acquisition module is used to acquire the main road driving data of the main road, wherein the main road driving data includes the number of vehicles on the main road and the driving speed of the vehicles on the main road;

[0042] A first comparison module is used to compare the number of vehicles on the main road with a preset number of vehicles, obtain first prompt information that needs to be displayed to the current vehicles on the auxiliary road, and send the first prompt information to a prompt device;

[0043] A second acquisition module is used to acquire the auxiliary road vehicle driving speed of the current auxiliary road vehicle;

[0044] A third acquisition module is used to acquire first distance information of the current auxiliary road vehicle reaching the intersection of the main road and the auxiliary road, and acquire second distance information of the current main road vehicle reaching the intersection;

[0045] A first judgment module, used for judging whether the current auxiliary road vehicle will collide with the main road vehicle based on the driving speed of the auxiliary road vehicle, the driving speed of the main road vehicle, the first distance information and the second distance information;

[0046] A generating and sending module is used to generate a second prompt message that needs to be displayed to the current auxiliary road vehicle, and send the second prompt message to the prompt device, wherein the second prompt message includes a target speed that needs to be reached after prompting the current auxiliary road vehicle to accelerate or decelerate.

[0047] In a third aspect, the present application provides an electronic device, which adopts the following technical solution:

[0048] An electronic device comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the method as described in any one of the first aspects.

[0049] In a fourth aspect, the present application provides a lane intersection accident prevention warning system, which adopts the following technical solutions:

[0050] A lane intersection accident prevention warning system, comprising electronic equipment, a main lane camera, a main lane speed measuring device, a main lane distance measuring device, an auxiliary lane camera, an auxiliary lane speed measuring device, an auxiliary lane distance measuring device and a prompting device;

[0051] The electronic device is respectively connected to the main road camera, the main road speed measuring device, the main road distance measuring device, the auxiliary road camera, the auxiliary road speed measuring device, the auxiliary road distance measuring device and the prompt device for communication;

[0052] The electronic device is used to execute the method described in any one of the first aspects above.

[0053] In a fifth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0054] A computer-readable storage medium stores a computer program that can be loaded by a processor and execute the method described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a flow chart of a lane intersection accident prevention warning method according to an embodiment of the present application.

[0056] Figure 2 It is a structural block diagram of a lane intersection accident prevention warning device according to an embodiment of the present application.

[0057] Figure 3 It is a structural block diagram of an electronic device according to an embodiment of the present application.

[0058] Figure 4 It is a structural block diagram of a lane intersection accident prevention warning system according to an embodiment of the present application. DETAILED DESCRIPTION

[0059] The present application is further described in detail below in conjunction with the accompanying drawings.

[0060] An embodiment of the present application provides a lane intersection accident prevention warning method, which can be executed by an electronic device, and the electronic device can be a server or a terminal device, wherein the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services, but is not limited to this.

[0061] like Figure 1 As shown, a lane intersection accident prevention warning method is applied to a server, and the main process of the method is described as follows (steps S101 to S106):

[0062] Step S101: Obtaining main road traffic data of a main road, the main road traffic data including the number of vehicles on the main road and the driving speed of vehicles on the main road;

[0063] The main road can be a single lane or multiple lanes. A main road camera and a main road speed measuring device are provided on the main road. The main road camera is used to obtain video images of vehicles within the first preset section where the main road meets the auxiliary road, and transmit the video data to the server. The server obtains the video image sequence and identifies the vehicles in the image sequence according to the vehicle recognition algorithm, and counts the identified vehicles to obtain the number of main road vehicles in the main road driving data.

[0064] The main road speed measuring device may be a radar speed measuring post set up along the main road of the first preset road section, the radar speed measuring post is used to measure the speed of the main road vehicle passing through the radar speed measuring post, and the radar speed measuring post sends the collected main road vehicle speed corresponding to the main road vehicle to the server. The first preset road section is the main road section that is about to reach the intersection of the main road and the auxiliary road along the main road travel direction.

[0065] Step S102: Compare the number of vehicles on the main road with the preset number of vehicles, obtain the first prompt information that needs to be displayed to the current vehicle on the auxiliary road, and send the first prompt information to the prompt device;

[0066] A preset number of vehicles is preset in the server. When the number of vehicles on the main road is not less than the preset number of vehicles, there are more vehicles in the first preset section of the main road, and it is more dangerous for vehicles on the auxiliary road to merge into the main road; when the number of vehicles on the main road is less than the preset number of vehicles, there are fewer vehicles in the first preset section of the main road, and it is safer for vehicles on the auxiliary road to merge into the main road.

[0067] The first prompt information includes first prompt content information and first color information. Exemplarily, the preset number of vehicles is 10, and the prompt device is located next to the auxiliary road 100m away from the main road. When the number of vehicles on the main road is not less than 10, the prompt device displays "There are many vehicles on the main road, please slow down" according to the first prompt content, and the first color information displays "red" in the corresponding area of ​​the prompt device; when the number of vehicles on the main road is less than 10, the prompt device displays "Pay attention and pass normally" according to the first prompt content, and the first color information displays "green" in the corresponding area of ​​the prompt device.

[0068] Step S103: obtaining the auxiliary road vehicle travel speed of the current auxiliary road vehicle;

[0069] At least two auxiliary road speed measuring devices are arranged in the second preset section of the auxiliary road, and the second preset section is the auxiliary road section that is about to reach the intersection of the main road and the auxiliary road along the direction of travel of the auxiliary road. The end point of the second preset section is the intersection, and an auxiliary road speed measuring device for measuring the speed of auxiliary road vehicles that have not reached the prompt device installation point in the second preset section is arranged in the auxiliary road section between the starting point of the second preset section and the prompt device installation point; multiple auxiliary road speed measuring devices for measuring the speed of auxiliary road vehicles that have passed the prompt device installation point in the second preset section can be arranged in the auxiliary road section between the prompt device installation point and the end point of the second preset section.

[0070] The auxiliary road speed measuring equipment can be a radar speed measuring post set up along the auxiliary road. The radar speed measuring post is used to measure the speed of multiple auxiliary road vehicles passing through the radar speed measuring post. The radar speed measuring post sends the collected auxiliary road vehicle corresponding to the auxiliary road vehicle to the server.

[0071] Step S104: obtaining first distance information of the current auxiliary road vehicle reaching the intersection of the main road and the auxiliary road, and obtaining second distance information of the current main road vehicle reaching the intersection;

[0072] The server has preset distances for each radar speed measuring post on the auxiliary road and each radar speed measuring post on the main road to the intersection of the main road and the auxiliary road. The first preset distance from the radar speed measuring post that collects the speed of the vehicle on the auxiliary road to the intersection of the main road and the auxiliary road is obtained, and the first preset distance is the first distance information; and the second preset distance from the radar speed measuring post that collects the speed of the vehicle on the main road to the intersection of the main road and the auxiliary road is obtained, and the second preset distance is the second distance information.

[0073] Step S105: determining whether the current auxiliary road vehicle will collide with the main road vehicle based on the auxiliary road vehicle driving speed of the current auxiliary road vehicle, the main road vehicle driving speed of the main road vehicle, the first distance information, and the second distance information;

[0074] The first time for the current auxiliary road vehicle to arrive at the intersection is calculated based on the first distance information and the driving speed of the auxiliary road vehicle. The second time for the current main road vehicle to arrive at the intersection is calculated based on the second distance information and the driving speed of the main road vehicle. If the first time is equal to the second time, the current auxiliary road vehicle will collide with the main road vehicle.

[0075] Step S106: If yes, generate a second prompt message to be displayed to the current auxiliary road vehicle, and send the second prompt message to the prompt device. The second prompt message includes a target speed to be reached after the current auxiliary road vehicle accelerates or decelerates.

[0076] People on the auxiliary road vehicles can make a preliminary judgment before entering the intersection based on the corresponding contents of the first prompt information and the second prompt information displayed by the prompt device, and adjust the speed of the auxiliary road vehicles accordingly according to the situation of the main road vehicles, thereby reducing the possibility of traffic accidents between auxiliary road vehicles entering the main road from the auxiliary road and main road vehicles, reducing the interference of auxiliary road vehicles on main road vehicles traveling normally on the main road after entering the main road, and improving the safety of auxiliary road vehicles entering the main road.

[0077] In this embodiment, the second prompt information generated in step S106 to be displayed to the current auxiliary road vehicle includes the following processing: if there is a rear vehicle behind the current auxiliary road vehicle, and the distance between the current auxiliary road vehicle and the rear vehicle is not greater than the first vehicle distance threshold, then the speed to be reached after acceleration is calculated, and the speed reached after acceleration is used as the target speed; if there is a rear vehicle behind the current auxiliary road vehicle, and the target speed is the speed reached after deceleration, then the second prompt information also includes prompt information for prompting the rear vehicle to decelerate the current auxiliary road vehicle.

[0078] When the distance between the rear vehicle and the current auxiliary road vehicle is not greater than the first vehicle distance threshold, the current auxiliary road vehicle is relatively close to the rear vehicle. If the current auxiliary road vehicle slows down to avoid the current main road vehicle, it is easy to rear-end the vehicle behind the current auxiliary road vehicle. Therefore, in order to reduce the possibility of a traffic accident between the current auxiliary road vehicle and the rear vehicle, when the distance between the current auxiliary road vehicle and the rear vehicle is not greater than the first vehicle distance threshold, the speed reached after acceleration needs to be used as the target speed.

[0079] When the speed reached after acceleration is required to be used as the target speed, it is necessary to determine whether there is a vehicle ahead of the current auxiliary road vehicle that has not yet entered the main road. If there is a vehicle ahead, when the current auxiliary road vehicle travels at a higher target speed, it is easy to cause a traffic accident such as a rear-end collision with the vehicle ahead. Therefore, in order to reduce the possibility of a traffic accident between the current auxiliary road vehicle and the vehicle ahead, calculating the speed to be reached after acceleration includes the following processing: obtaining a first speed range for safely entering the main road based on the auxiliary road vehicle driving speed of the current auxiliary road vehicle; if there is a vehicle ahead of the current auxiliary road vehicle that has not yet entered the main road, obtaining the driving speed of the vehicle ahead; obtaining a second speed range in which the current auxiliary road vehicle does not collide with the vehicle ahead, the second speed range being within the first speed range; and selecting a target speed based on the second speed range.

[0080] The first speed interval is a speed interval that is greater than the speed of the auxiliary road vehicle, and the first speed interval includes the first speed maximum value. In this embodiment, obtaining the first speed interval for safely entering the main road based on the auxiliary road vehicle speed of the current auxiliary road vehicle includes: taking the speed interval that is greater than the current auxiliary road vehicle speed as the first speed interval; obtaining the current traffic flow within a first preset section from the intersection; obtaining the traffic flow level information corresponding to the current traffic flow; obtaining the safety speed value of the auxiliary road corresponding to the traffic flow level information, and taking the safety speed value as the first speed maximum value.

[0081] In this embodiment, the current traffic flow is calculated according to the number of vehicles in the main lane in the main lane driving data and the observation time, and the current traffic flow=the number of vehicles in the main lane / the observation time.

[0082] The server has a preset mapping table corresponding to vehicle flow and vehicle flow level information, and also has a preset mapping table corresponding to vehicle flow level information and safe speed value; the greater the current vehicle flow, the smaller the safe speed value is in order to improve the safety of vehicles on the auxiliary road entering the main road.

[0083] Exemplarily, the traffic flow level information includes level one traffic flow, level two traffic flow and level three traffic flow. The traffic flow interval corresponding to the level one traffic flow is greater than a and not greater than b, and the safety speed value corresponding to the level one traffic flow is v1; the traffic flow interval corresponding to the level two traffic flow is greater than b and not greater than c, and the safety speed value corresponding to the level two traffic flow is v2; the traffic flow interval corresponding to the level three traffic flow is greater than c and not greater than d, and the safety speed value corresponding to the level three traffic flow is v3; wherein, a<b<c<d, v1>v2>v3.

[0084] A plurality of auxiliary road ranging devices are arranged in the second preset section of the auxiliary road, and the detection range of the plurality of auxiliary road ranging devices can completely cover the second preset section of the auxiliary road. The auxiliary road ranging device can be a radar ranging probe arranged along the auxiliary road, and the radar ranging probe is used to measure the distance of a plurality of auxiliary road vehicles passing through the detection range of the radar ranging probe, and the radar ranging probe sends the collected auxiliary road vehicle ranging information to the server.

[0085] The distance between the current auxiliary road vehicle and the vehicle in front and behind in the auxiliary road is calculated based on the auxiliary road vehicle ranging information sent by the auxiliary road radar ranging probe.

[0086] Obtain the auxiliary road vehicle speed of the vehicle in front, calculate the maximum auxiliary road vehicle speed at which the current auxiliary road vehicle does not collide with the vehicle in front according to the distance between the current auxiliary road vehicle and the vehicle in front, the current auxiliary road vehicle speed, and the auxiliary road vehicle speed of the vehicle in front, and use the maximum auxiliary road vehicle speed as the maximum value of the second speed interval, so that the second speed interval is greater than the current auxiliary road vehicle speed and less than the maximum auxiliary road vehicle speed.

[0087] In this embodiment, selecting the target speed based on the second speed range also includes the following processing: obtaining the vehicle type information of the current auxiliary road vehicle based on the video data of the auxiliary road camera; obtaining a correspondence table between the auxiliary road vehicle driving speed and fuel consumption information of the current auxiliary road vehicle based on the vehicle type information; and selecting the auxiliary road vehicle driving speed with the lowest fuel consumption information in the second speed range as the target speed based on the correspondence table.

[0088] The auxiliary road camera is used to obtain video images of auxiliary road vehicles in the second preset section of the auxiliary road, and transmit the video data to the server. The server identifies the vehicle model information of the auxiliary road vehicles in the image sequence according to the vehicle model recognition algorithm model, and the vehicle model information includes the vehicle brand. The server has a preset correspondence table between the driving speed and fuel consumption information of different vehicle brands, so that the driving speed with the lowest fuel consumption in the second speed range is selected as the target speed according to the correspondence table.

[0089] A plurality of main road distance measuring devices are arranged in the first preset section of the main road, and the detection range of the plurality of main road distance measuring devices can completely cover the first preset section of the main road. The main road distance measuring device can also be a radar distance measuring probe arranged along the auxiliary road, and the radar distance measuring probe is used to measure the distance of a plurality of main road vehicles passing through the detection range of the radar distance measuring probe, and the radar distance measuring probe sends the collected main road vehicle distance information to the server.

[0090] The distance between the current main road vehicle and the front vehicle and the rear vehicle in the main road is calculated based on the main road vehicle ranging information sent by the main road radar ranging probe.

[0091] When there are multiple main road vehicles on the main road and the distance between the multiple main road vehicles is small, the auxiliary road vehicle entering the main road is likely to collide with the vehicle behind the current main road vehicle. Therefore, in order to improve the safety of the auxiliary road vehicles entering the main road, obtaining the second distance information of the current main road vehicle arriving at the intersection includes the following processing: if the number of main road vehicles is greater than one, and the distance between the multiple main road vehicles along the extension direction of the main road is not greater than the second distance threshold, then the vehicle farthest from the intersection among the multiple main road vehicles is taken as the current main road vehicle.

[0092] In this embodiment, if the current auxiliary road vehicle is traveling on the auxiliary road at a faster speed, the possibility of the current auxiliary road vehicle viewing the prompt content of the prompt device is low. Therefore, in order to increase the possibility of people in the current auxiliary road vehicle with a faster speed viewing the prompt content of the prompt device, the prompt device of the present application is configured to include multiple prompt screens arranged along the extension direction of the auxiliary road, and the multiple prompt screens are interconnected with a coverage angle of 180 degrees; a second prompt message is sent to the prompt device, and the second prompt message includes a target speed to be reached after prompting the current auxiliary road vehicle to accelerate or decelerate, and also includes: determining whether the auxiliary road vehicle driving speed of the current auxiliary road vehicle is not less than the speed threshold; if so, sending the second prompt message to multiple prompt screens respectively, so that the multiple prompt screens all prompt the current auxiliary road vehicle.

[0093] A speed threshold is preset in the server. Exemplarily, the prompt device includes a first prompt screen, a second prompt screen and a third prompt screen. The first prompt screen, the second prompt screen and the third prompt screen are set at different angles. When the current auxiliary road vehicle travels along the auxiliary road toward the prompt device, the first prompt screen first corresponds to the current auxiliary road vehicle; the second prompt screen is set flush with the current auxiliary road vehicle; when the current auxiliary road vehicle drives away from the second prompt screen along the auxiliary road, the current auxiliary road vehicle can understand the display content by observing the third prompt screen.

[0094] Based on the same technical concept, the present application also provides a lane intersection accident prevention warning device, such as Figure 2 As shown, the lane intersection accident prevention warning device 200 mainly includes:

[0095] The first acquisition module 201 is used to acquire the main road driving data of the main road, the main road driving data includes the number of vehicles on the main road and the driving speed of the vehicles on the main road;

[0096] A first comparison module 202 is used to compare the number of vehicles on the main road with the preset number of vehicles, obtain the first prompt information that needs to be displayed to the current vehicles on the auxiliary road, and send the first prompt information to the prompt device;

[0097] The second acquisition module 203 is used to acquire the current auxiliary road vehicle driving speed of the auxiliary road;

[0098] The third acquisition module 204 is used to obtain the first distance information of the current auxiliary road vehicle reaching the intersection of the main road and the auxiliary road, and obtain the second distance information of the current main road vehicle reaching the intersection;

[0099] The first judgment module 205 is used to judge whether the current auxiliary road vehicle will collide with the main road vehicle based on the driving speed of the auxiliary road vehicle, the driving speed of the main road vehicle, the first distance information and the second distance information;

[0100] The generating and sending module 206 is used to generate a second prompt information to be displayed to the current auxiliary road vehicle, and send the second prompt information to the prompt device. The second prompt information includes a target speed to be reached after the current auxiliary road vehicle accelerates or decelerates.

[0101] Optionally, the generating and sending module 206 includes:

[0102] The calculation submodule is used to calculate the speed to be reached after acceleration when there is a rear vehicle behind the current auxiliary lane vehicle and the distance between the current auxiliary lane vehicle and the rear vehicle is not greater than the first vehicle distance threshold, and the speed reached after acceleration is used as the target speed;

[0103] The deceleration submodule is used for, when there is a rear vehicle behind the current auxiliary lane vehicle and the target speed is the speed to be reached after deceleration, the second prompt information also includes prompt information for prompting the rear vehicle to decelerate the current auxiliary lane vehicle.

[0104] Optionally, the calculation includes as a submodule:

[0105] The first speed interval acquisition submodule is used to acquire a first speed interval for safely entering the main road based on the current auxiliary road vehicle driving speed of the auxiliary road vehicle;

[0106] The submodule for obtaining the speed of the vehicle ahead is used to obtain the driving speed of the vehicle ahead when there is a vehicle ahead of the current vehicle on the auxiliary road that has not yet entered the main road;

[0107] A second speed acquisition submodule is used to acquire a second speed interval in which the current auxiliary road vehicle does not collide with the vehicle in front, and the second speed interval is within the first speed interval;

[0108] The selection submodule is used to select a target speed based on the second speed interval.

[0109] Optionally, select submodules including:

[0110] The fourth acquisition submodule is used to obtain the model information of the current auxiliary road vehicle based on the video data of the auxiliary road camera;

[0111] A fifth acquisition submodule, used for acquiring a corresponding relationship table between the auxiliary road vehicle driving speed and the fuel consumption information of the current auxiliary road vehicle based on the vehicle type information;

[0112] The sixth acquisition submodule is used to select the auxiliary road vehicle driving speed with the lowest fuel consumption information in the second speed interval as the target speed based on the corresponding relationship table.

[0113] Optionally, the obtaining the first speed interval submodule includes:

[0114] As a submodule, it is used to take a speed interval greater than the current driving speed of the auxiliary road vehicle as the first speed interval;

[0115] A seventh acquisition submodule is used to acquire the current traffic flow within a first preset road section from the intersection;

[0116] An eighth acquisition submodule is used to obtain traffic flow level information corresponding to the current traffic flow;

[0117] The ninth acquisition submodule is used to obtain the safety speed value of the auxiliary road corresponding to the vehicle flow level information, and use the safety speed value as the first maximum speed.

[0118] Optionally, the generating and sending module 206 includes:

[0119] A judgment submodule is used to judge whether the current auxiliary lane vehicle driving speed is not less than a speed threshold;

[0120] The prompt sending submodule is used to send the second prompt information to multiple prompt screens respectively, so that the multiple prompt screens all prompt the current auxiliary road vehicle.

[0121] Optionally, the third acquisition module 204 acquires the second distance information of the current main road vehicle reaching the intersection, including:

[0122] As a submodule, when the number of vehicles on the main road is greater than one and the vehicle distance between the multiple main road vehicles along the extension direction of the main road is not greater than a second vehicle distance threshold, the vehicle farthest from the intersection among the multiple main road vehicles is used as the current main road vehicle.

[0123] In one example, the module in any of the above devices can be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASICs), or, one or more digital signal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0124] For another example, when the modules in the device can be implemented in the form of a processing element scheduling program, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0125] Various objects such as various messages / information / equipment / network elements / systems / devices / actions / operations / processes / concepts that may appear in this application are named. It can be understood that these specific names do not constitute a limitation on the relevant objects. The names assigned may change with factors such as scenarios, contexts or usage habits. The understanding of the technical meaning of the technical terms in this application should be mainly determined from the functions and technical effects embodied / executed in the technical scheme.

[0126] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and modules described above may refer to the corresponding processes in the aforementioned lane intersection accident prevention warning method embodiment, and will not be repeated here.

[0127] Those of ordinary skill in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0128] Based on the same technical concept, the present application also provides an electronic device, such as Figure 3 As shown, the electronic device 300 includes a processor 301 and a memory 302 , and may further include an information input / information output (I / O) interface 303 , one or more of a communication component 304 , and a communication bus 305 .

[0129] The processor 301 is used to control the overall operation of the electronic device 300 to complete all or part of the steps in the lane intersection accident prevention warning method described above; the memory 302 is used to store various types of data to support the operation of the electronic device 300, and these data may include, for example, instructions for any application or method used to operate on the electronic device 300, and data related to the application. The memory 302 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0130] The I / O interface 303 provides an interface between the processor 301 and other interface modules, and the above-mentioned other interface modules can be keyboards, mice, buttons, etc. These buttons can be virtual buttons or physical buttons. The communication component 304 is used to test the wired or wireless communication between the electronic device 300 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 104 can include: Wi-Fi components, Bluetooth components, NFC components.

[0131] The communication bus 305 may include a path to transmit information between the above components. The communication bus 305 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The communication bus 305 may be divided into an address bus, a data bus, a control bus, etc.

[0132] The electronic device 300 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the lane intersection accident prevention warning method given in the above embodiment.

[0133] The electronic device 300 may include, but is not limited to, a mobile terminal such as a digital broadcast receiver, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), etc., and a fixed terminal such as a digital TV, a desktop computer, etc., and may also be a server, etc.

[0134] Based on the same technical concept, the present application also provides a lane intersection accident prevention warning system, such as Figure 4 As shown, the lane intersection accident prevention warning system 400 includes an electronic device 300, and in this embodiment, the electronic device is a server 401. The lane intersection accident prevention warning system 400 also includes a main road camera 402, a main road speed measuring device 403, a main road distance measuring device 404, an auxiliary road camera 405, an auxiliary road speed measuring device 406, an auxiliary road distance measuring device 407 and a prompt device 408.

[0135] The server 401 is respectively connected to the main road camera 402, the main road speed measuring device 403, the main road distance measuring device 404, the auxiliary road camera 405, the auxiliary road speed measuring device 406, the auxiliary road distance measuring device 407 and the prompt device 408; the server 401 is used to execute any one of the lane intersection accident prevention warning methods in the above-mentioned embodiments.

[0136] Based on the same technical concept, the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned data conversion method are implemented.

[0137] The computer-readable storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0138] The terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0139] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned application concept. For example, the above features are replaced with (but not limited to) technical features with similar functions applied in the present application.

Claims

1. A lane intersection accident prevention warning method, characterized in that: include: Acquire main road traffic data of the main road, wherein the main road traffic data includes the number of vehicles on the main road and the driving speed of vehicles on the main road; Compare the number of vehicles on the main road with the preset number of vehicles to obtain first prompt information that needs to be displayed to the current vehicles on the auxiliary road, and send the first prompt information to the prompt device; Obtaining the auxiliary road vehicle travel speed of the current auxiliary road vehicle on the auxiliary road; Acquire first distance information of the current auxiliary road vehicle reaching the intersection of the main road and the auxiliary road, and acquire second distance information of the current main road vehicle reaching the intersection; Determining whether the current auxiliary road vehicle will collide with the main road vehicle based on the auxiliary road vehicle driving speed, the main road vehicle driving speed, the first distance information, and the second distance information; If yes, generate a second prompt message to be displayed to the current auxiliary road vehicle, and send the second prompt message to the prompt device, wherein the second prompt message includes a target speed to be reached after the current auxiliary road vehicle accelerates or decelerates; The generating of the second prompt information to be displayed to the current auxiliary road vehicle comprises: If there is a rear vehicle behind the current auxiliary lane vehicle, and the distance between the current auxiliary lane vehicle and the rear vehicle is not greater than a first vehicle distance threshold, then calculating the speed that needs to be reached after acceleration, and taking the speed reached after acceleration as the target speed; If there is a rear vehicle behind the current auxiliary lane vehicle, and the target speed is the speed reached after deceleration, the second prompt information further includes prompt information for prompting the rear vehicle to decelerate the current auxiliary lane vehicle; The calculation requires a speed to be reached after acceleration, and taking the speed to be reached after acceleration as the target speed includes: Acquire a first speed interval for safely entering the main road based on the auxiliary road vehicle driving speed of the current auxiliary road vehicle; If there is a front vehicle in front of the current auxiliary road vehicle that has not yet entered the main road, obtaining the driving speed of the front vehicle; Acquire a second speed interval in which the current auxiliary lane vehicle does not collide with the front vehicle, the second speed interval being within the first speed interval; The target speed is selected based on the second speed range.

2. The method according to claim 1, characterized in that The first speed interval includes a first speed maximum value; The obtaining of the first speed interval for safely entering the main road based on the current driving speed of the auxiliary road vehicle comprises: Taking a speed interval greater than the current auxiliary road vehicle travel speed as the first speed interval; Acquire the current traffic volume in a first preset road section, where the first preset road section is a main road section that is about to reach the intersection of the main road and the auxiliary road along the main road travel direction; Obtaining traffic flow level information corresponding to the current traffic flow; A safe speed value of the auxiliary road corresponding to the vehicle flow level information is obtained, and the safe speed value is used as the first maximum speed value.

3. The method according to claim 2, characterized in that The prompt device includes a plurality of prompt screens arranged along the extension direction of the auxiliary road; The sending of the second prompt information to the prompt device, wherein the second prompt information includes a target speed to be reached after the current auxiliary road vehicle accelerates or decelerates, and further includes: Determining whether the auxiliary lane vehicle driving speed of the current auxiliary lane vehicle is not less than a speed threshold; If so, the second prompt information is sent to the plurality of prompt screens respectively, so that the plurality of prompt screens all provide prompts to the current auxiliary lane vehicle.

4. The method according to claim 2, characterized in that: The obtaining of the second distance information of the current main road vehicle reaching the intersection includes: If the number of the main road vehicles is greater than one, and the vehicle distance between the plurality of main road vehicles along the extension direction of the main road is not greater than a second vehicle distance threshold, the vehicle farthest from the intersection among the plurality of main road vehicles is taken as the current main road vehicle.

5. A lane intersection accident prevention warning device, characterized in that: include: A first acquisition module is used to acquire the main road driving data of the main road, wherein the main road driving data includes the number of vehicles on the main road and the driving speed of the vehicles on the main road; A first comparison module is used to compare the number of vehicles on the main road with a preset number of vehicles, obtain first prompt information that needs to be displayed to the current vehicles on the auxiliary road, and send the first prompt information to a prompt device; A second acquisition module is used to acquire the auxiliary road vehicle driving speed of the current auxiliary road vehicle; A third acquisition module is used to acquire first distance information of the current auxiliary road vehicle reaching the intersection of the main road and the auxiliary road, and acquire second distance information of the current main road vehicle reaching the intersection; A first judgment module, used for judging whether the current auxiliary road vehicle will collide with the main road vehicle based on the driving speed of the auxiliary road vehicle, the driving speed of the main road vehicle, the first distance information and the second distance information; A generating and sending module is used to generate a second prompt information to be displayed to the current auxiliary road vehicle, and send the second prompt information to the prompt device, wherein the second prompt information includes a target speed to be reached after prompting the current auxiliary road vehicle to accelerate or decelerate; The generating and sending module is specifically used for generating the second prompt information that needs to be displayed to the current auxiliary road vehicle on the auxiliary road, including: If there is a rear vehicle behind the current auxiliary lane vehicle, and the distance between the current auxiliary lane vehicle and the rear vehicle is not greater than a first vehicle distance threshold, then calculating the speed that needs to be reached after acceleration, and taking the speed reached after acceleration as the target speed; If there is a rear vehicle behind the current auxiliary lane vehicle, and the target speed is the speed reached after deceleration, the second prompt information further includes prompt information for prompting the rear vehicle to decelerate the current auxiliary lane vehicle; The generating and sending module is specifically used for calculating the speed to be reached after acceleration, and taking the speed reached after acceleration as the target speed includes: Acquire a first speed interval for safely entering the main road based on the auxiliary road vehicle driving speed of the current auxiliary road vehicle; If there is a front vehicle in front of the current auxiliary road vehicle that has not yet entered the main road, obtaining the driving speed of the front vehicle; Acquire a second speed interval in which the current auxiliary lane vehicle does not collide with the front vehicle, the second speed interval being within the first speed interval; The target speed is selected based on the second speed range.

6. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the method according to any one of claims 1 to 4.

7. A lane intersection accident prevention warning system, characterized in that: Including electronic equipment, main lane camera, main lane speed measuring equipment, main lane distance measuring equipment, auxiliary lane camera, auxiliary lane speed measuring equipment, auxiliary lane distance measuring equipment and prompting equipment; The electronic device is respectively connected to the main road camera, the main road speed measuring device, the main road distance measuring device, the auxiliary road camera, the auxiliary road speed measuring device, the auxiliary road distance measuring device and the prompt device for communication; The electronic device is used to execute the method according to any one of claims 1 to 4 above.

8. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the method according to any one of claims 1 to 4.

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