A vehicle following distance control method and device, electronic equipment and storage medium

Abstract

The application relates to a vehicle following distance control method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring the maximum speed limit of the current driving road of the vehicle, and determining a first safe following distance under the maximum speed limit according to the maximum speed limit; acquiring the current speed of the vehicle, and determining a second safe following distance according to the current speed; acquiring the current visibility of the current driving road of the vehicle; and determining a target following distance according to the first safe following distance, the second safe following distance and the current visibility. The application can flexibly adjust the following distance of the vehicle based on multi-dimensional information.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic driving, in particular to a vehicle following distance control method and device, electronic equipment and storage medium. BACKGROUND

[0002] The following behavior refers to each member vehicle in a specific vehicle group maintaining the same speed and driving in front and rear. The purpose is to stabilize driving. Among them, the correct judgment of the gap and relative speed between two vehicles is very important. In different driving scenes and weather conditions, the safe distance of following is different, and the driver needs to have skilled driving experience to ensure the safety of following. But in the process of long-time following, the relative static driving environment is easy to make the driver make a wrong estimate of the gap and relative speed between vehicles, thus causing danger. SUMMARY

[0003] In view of the above problems, the present application embodiment is proposed to provide a vehicle following distance control method, device, electronic equipment and storage medium which can overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, in the first aspect, the present application embodiment discloses a vehicle following distance control method, which comprises:

[0005] Obtaining the maximum speed limit of the current driving road of the vehicle, and determining a first safe following distance under the maximum speed limit according to the maximum speed limit;

[0006] Obtaining the current speed of the vehicle, and determining a second safe following distance according to the current speed;

[0007] Obtaining the current visibility of the current driving road of the vehicle;

[0008] Determining a target following distance according to the first safe following distance, the second safe following distance and the current visibility.

[0009] Optionally, the determining a target following distance according to the first safe following distance, the second safe following distance and the current visibility comprises:

[0010] Judging whether the current visibility is less than a visibility threshold;

[0011] If the current visibility is less than the visibility threshold, obtaining a mapping relationship between visibility and following distance, and determining a target following distance according to the current visibility and the mapping relationship;

[0012] If the current visibility is greater than or equal to the visibility threshold, judging whether the second safe following distance is greater than or equal to the first safe following distance;

[0013] If the second safe following distance is greater than or equal to the first safe following distance, it is determined that the target following distance is greater than or equal to the second safe following distance.

[0014] If the second safe following distance is less than the first safe following distance, it is determined that the target following distance is greater than or equal to the second safe following distance and less than or equal to the first safe following distance.

[0015] Optionally, the first safe following distance under the highest speed limit is determined according to the highest speed limit, comprising:

[0016] The product of the highest speed limit and a preset time length is taken as the first safe following distance.

[0017] Optionally, the vehicle is provided with a road surface humidity detection sensor, and the second safe following distance is determined according to the current vehicle speed, comprising:

[0018] Obtaining road surface humidity information detected by the sensor;

[0019] Determining a road surface friction coefficient according to the road surface humidity information;

[0020] The second safe following distance is calculated by the following formula:

[0021] ,

[0022] Wherein, S is the second safe following distance, V is the current vehicle speed, g is the acceleration of gravity, μ is the road surface friction coefficient, and t is the braking reaction time of the driver.

[0023] Optionally, the method further comprises:

[0024] Obtaining license plate information of a target vehicle, binding the license plate information of the target vehicle and taking the target vehicle as a following vehicle;

[0025] Obtaining driving information of the following vehicle;

[0026] Following the following vehicle according to the driving information of the following vehicle.

[0027] Optionally, the method further comprises:

[0028] Displaying the driving information of the following vehicle in a navigation map.

[0029] Optionally, the method further comprises:

[0030] Obtaining a current following distance between the vehicle and a front following vehicle;

[0031] determine whether the current following distance meets the value requirement of the target following distance;

[0032] if the current following distance does not meet the value requirement of the target following distance, sending a following distance reminding information.

[0033] In a second aspect, the embodiments of the present application disclose a vehicle following distance control device, which comprises:

[0034] a first safe following distance determination module, configured to acquire a maximum speed limit of a current driving road of the vehicle, and determine a first safe following distance under the maximum speed limit according to the maximum speed limit;

[0035] a second safe following distance determination module, configured to acquire a current speed of the vehicle, and determine a second safe following distance according to the current speed;

[0036] a road visibility acquisition module, configured to acquire a current visibility of the current driving road of the vehicle;

[0037] a target following distance determination module, configured to determine a target following distance according to the first safe following distance, the second safe following distance and the current visibility.

[0038] Optionally, the target following distance determination module is specifically configured to: determine whether the current visibility is less than a visibility threshold; if the current visibility is less than the visibility threshold, acquire a mapping relationship between visibility and following distance, and determine a target following distance according to the current visibility and the mapping relationship; if the current visibility is greater than or equal to the visibility threshold, determine whether the second safe following distance is greater than or equal to the first safe following distance; if the second safe following distance is greater than or equal to the first safe following distance, determine that the target following distance is greater than or equal to the second safe following distance; if the second safe following distance is less than the first safe following distance, determine that the target following distance is greater than or equal to the second safe following distance and less than or equal to the first safe following distance.

[0039] Optionally, the first safe following distance determination module is specifically configured to: take a product of the maximum speed limit and a preset time length as the first safe following distance.

[0040] Optionally, the second safe following distance is specifically configured to: acquire road surface humidity information detected by the sensor; determine a road surface friction coefficient according to the road surface humidity information; and calculate the second safe following distance through the following formula:

[0041] ,

[0042] Wherein, S is a second safe following distance, V is a current vehicle speed, g is a gravity acceleration, mu is a road surface friction coefficient, and t is a driver's braking reaction time.

[0043] Optionally, the device further comprises:

[0044] A following vehicle binding module configured to acquire license plate information of a target vehicle, bind the license plate information of the target vehicle, and bind the target vehicle as a following vehicle.

[0045] A following vehicle driving information acquisition module configured to acquire driving information of the following vehicle.

[0046] A following module configured to perform a following behavior on the following vehicle according to the driving information of the following vehicle.

[0047] Optionally, the device further comprises:

[0048] A following vehicle driving information display module configured to display the driving information of the following vehicle on a navigation map.

[0049] Optionally, the device further comprises:

[0050] A current following distance acquisition module configured to acquire a current following distance between the vehicle and a front following vehicle.

[0051] A current following distance judgment module configured to judge whether the current following distance meets a value requirement of the target following distance.

[0052] A following distance reminding module configured to send a following distance reminding information if the current following distance does not meet the value requirement of the target following distance.

[0053] In a third aspect, an electronic device is disclosed, which comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and the computer program, when executed by the processor, implements the steps of the vehicle following distance control method as described above.

[0054] In a fourth aspect, a computer readable storage medium is disclosed, and the computer readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the vehicle following distance control method as described above.

[0055] The present application has the following beneficial effects:

[0056] The highest speed limit of the current driving road of the vehicle is acquired, and a first safe following distance under the highest speed limit is determined according to the highest speed limit; the current speed of the vehicle is acquired, and a second safe following distance is determined according to the current speed; the current visibility of the current driving road of the vehicle is acquired; and the target following distance is determined according to the first safe following distance, the second safe following distance and the current visibility. The present application can flexibly adjust the following distance of the vehicle based on the highest speed limit of the current driving road, the current speed of the vehicle, the visibility of the current driving road and other multi-dimensional information. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is a step flow chart of a vehicle following distance control method provided by an embodiment of the present application;

[0058] Figure 2 is a step flow chart of another vehicle following distance control method provided by an embodiment of the present application;

[0059] Figure 3 is a calculation method schematic diagram of the present application for assisting the driver in following according to multi-dimensional information;

[0060] Figure 4 is a calculation method schematic diagram of the present application for assisting the driver in following according to multi-dimensional information in combination with specific data;

[0061] Figure 5 is a scheme flow chart of the present application for assisting the driver in following according to multi-dimensional information;

[0062] Figure 6 is a structure block diagram of a vehicle following distance control device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0063] The embodiments of the present application will be described below with reference to the drawings and preferred embodiments, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure in the specification. The present application can also be implemented or applied by other different specific embodiments, and each detail in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, and are not intended to limit the protection scope of the present application.

[0064] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0065] In the related art, the determination of the following distance of the vehicle is not flexible, and the following distance is not adjusted according to the specific driving condition and the road surface condition in different weather. Therefore, one of the core ideas of the present application is to flexibly adjust the following distance of the vehicle based on multi-dimensional information.

[0066] Referring to Figure 1 , a step flow chart of a vehicle following distance control method provided by an embodiment of the present application is shown, and the method can specifically include the following steps:

[0067] In step 101, the maximum speed limit of the current driving road of the vehicle is obtained, and a first safe following distance under the maximum speed limit is determined according to the maximum speed limit.

[0068] The GPS positioning system and the navigation system are generally installed on the vehicle, and the driving road information of the vehicle can be obtained through the GPS positioning system and / or the navigation system. The driving road information can include the name of the driving road, the type of the driving road, the maximum speed limit of the driving road, etc. The type of the driving road includes urban roads, national roads, highway sections, etc. According to the maximum speed limit of the current driving road of the vehicle, the first safe following distance when the vehicle drives at the maximum speed limit can be calculated.

[0069] In an embodiment, the first safe following distance when the vehicle drives at the maximum speed limit can be calculated according to the "three-second distance" principle (distance = speed x 3s) combined with the maximum speed limit.

[0070] In step 102, the current speed of the vehicle is obtained, and a second safe following distance is determined according to the current speed.

[0071] According to the actual driving speed of the vehicle, the current safe following distance of the vehicle, i.e., the second safe following distance, can be calculated.

[0072] In an embodiment, a road surface humidity detection sensor is installed on the vehicle, and step 102 can specifically include: obtaining the road surface humidity information detected by the sensor; determining the road surface friction coefficient according to the road surface humidity information; and calculating the second safe following distance through the following formula:

[0073] ,

[0074] Wherein, S is the second safe following distance, V is the current speed, g is the acceleration of gravity, μ is the road surface friction coefficient, and t is the brake reaction time of the driver.

[0075] The vehicle can store a corresponding relationship between road surface humidity and friction coefficient, for example, the corresponding relationship is: road surface humidity 20%-road surface friction coefficient 0.6; after obtaining the current road surface humidity through the road surface humidity detection sensor, the road surface friction coefficient can be determined according to the current road surface humidity and the corresponding relationship. Alternatively, the vehicle driving road information can be obtained according to the GPS positioning system and / or navigation system and / or vehicle-mounted camera first, and the vehicle driving road information includes road surface material, for example, the road surface material can be cement pavement, asphalt pavement, soil pavement, etc. At the same time, the vehicle can store a corresponding relationship between road surface material, road surface humidity and friction coefficient, for example, the corresponding relationship can be asphalt pavement-road surface humidity 20%-road surface friction coefficient 0.6, when the current road surface humidity and the road surface material are obtained, the road surface friction coefficient can be determined according to the current road surface humidity, the road surface material and the corresponding relationship.

[0076] After obtaining the road surface friction coefficient, the second safe following distance can be calculated according to the above formula.

[0077] Since the calculation methods of the first safe following distance and the second safe following distance are different, even when the vehicle is driving at a speed lower than the maximum speed limit, the second safe following distance calculated thereby can be greater than or equal to the first safe following distance.

[0078] Step 103, obtaining the current visibility of the road currently driven by the vehicle.

[0079] The visibility information of the road is also an important factor affecting the following distance, so the current visibility of the road driven by the vehicle needs to be obtained to determine the target following distance in combination with the visibility. According to the traffic law, if the visibility is less than 200 m, the speed shall be less than 60 km / h, and the distance from the front vehicle in the same lane shall be greater than 100 m; if the visibility is less than 100 m, the speed shall be less than 40 km / h, and the distance from the front vehicle in the same lane shall be greater than 50 m; if the visibility is less than 50 m, the speed shall not exceed 20 km / h, and the vehicle shall leave the expressway from the nearest exit.

[0080] Step 104, determining the target following distance according to the first safe following distance, the second safe following distance and the current visibility.

[0081] After determining the first safe following distance, the second safe following distance and the current visibility, the target following distance can be obtained in combination with the three.

[0082] The embodiment of the present application obtains the maximum speed limit of the current driving road of the vehicle, and determines the first safe following distance under the maximum speed limit according to the maximum speed limit; obtains the current speed of the vehicle, and determines the second safe following distance according to the current speed; obtains the current visibility of the current driving road of the vehicle; determines the target following distance according to the first safe following distance, the second safe following distance and the current visibility. The following distance of the vehicle is flexibly adjusted based on the maximum speed limit, the current speed and the visibility and other multi-dimensional information.

[0083] Referring to Figure 2 The embodiment of the present application provides another vehicle following distance control method, and a step flowchart of the method is shown, and the method can include the following steps:

[0084] Step 201, obtaining the maximum speed limit of the current driving road of the vehicle, and determining the first safe following distance under the maximum speed limit according to the maximum speed limit.

[0085] Step 202, obtaining the current speed of the vehicle, and determining the second safe following distance according to the current speed.

[0086] Step 203, obtaining the current visibility of the current driving road of the vehicle.

[0087] The specific implementation process of steps 201-203 of the embodiment of the present application is similar to that of steps 101-103, and thus, no more description is given here.

[0088] Step 204, judging whether the current visibility is less than the visibility threshold.

[0089] After obtaining the current visibility of the current driving road, it can be judged whether the current visibility is less than the visibility threshold, and the visibility threshold can be 200 m.

[0090] Step 205, if the current visibility is less than the visibility threshold, obtaining the mapping relationship between the visibility and the following distance, and determining the target following distance according to the current visibility and the mapping relationship.

[0091] If the current visibility is less than the visibility threshold, the target following distance is directly determined according to the mapping relationship between the visibility and the following distance and the current visibility. The mapping relationship between the visibility and the following distance can be that when the visibility is less than 200 m and greater than or equal to 100 m, the target following distance needs to be greater than 100 m; when the visibility is less than 100 m and greater than or equal to 50 m, the target following distance needs to be greater than 50 m; and when the visibility is less than 50 m, there is no target following distance, and the driver is directly prompted to leave as soon as possible.

[0092] In step 206, if the current visibility is greater than or equal to the visibility threshold, it is determined whether the second safe following distance is greater than or equal to the first safe following distance.

[0093] In step 207, if the second safe following distance is greater than or equal to the first safe following distance, it is determined that the target following distance is greater than or equal to the second safe following distance.

[0094] If the previous visibility is greater than or equal to the visibility threshold, and the second safe following distance is greater than or equal to the first safe following distance, it is determined that the target following distance is greater than or equal to the second safe following distance. For example, the second safe following distance is 80 m, the first safe following distance is 70 m, and the second safe following distance is greater than the first safe following distance, so it is determined that the target following distance is a distance greater than or equal to 80 m.

[0095] In step 208, if the second safe following distance is less than the first safe following distance, it is determined that the target following distance is greater than or equal to the second safe following distance and less than or equal to the first safe following distance.

[0096] If the previous visibility is greater than or equal to the visibility threshold, and the second safe following distance is less than the first safe following distance, it is determined that the target following distance is greater than or equal to the second safe following distance and less than or equal to the first safe following distance. For example, the second safe following distance is 80 m, the first safe following distance is 90 m, and the second safe following distance is less than the first safe following distance, so it is determined that the target following distance is a distance greater than or equal to 80 m and less than or equal to 90 m.

[0097] The embodiment of the present application determines the target following distance based on the visibility, the first safe distance, and the second safe distance of the current road, and realizes flexible adjustment of the target following distance based on multi-dimensional information.

[0098] In an embodiment, the vehicle following distance control method can further include: obtaining license plate information of a target vehicle, binding the license plate information of the target vehicle and taking the target vehicle as a following vehicle; obtaining driving information of the following vehicle; and performing a following behavior on the following vehicle according to the driving information of the following vehicle.

[0099] For some scenarios, such as wedding parades and multiple people traveling together, multiple vehicles need to travel on the same route. The vehicle can obtain the license plate information of the target vehicle, and send a following binding request to the target vehicle based on the license plate information. After the target vehicle agrees to the following binding request, the vehicle can obtain the driving information of the target vehicle and perform a following behavior on the target vehicle based on the driving information. During the following process, the following distance from the target vehicle can be controlled based on the above vehicle following distance control method.

[0100] In an embodiment, the driving information of the following vehicle can be displayed in a navigation map.

[0101] In an embodiment, the vehicle following distance control method can further include: obtaining a current following distance between the vehicle and a front following vehicle; determining whether the current following distance meets a value requirement of a target following distance; and sending a following distance reminding information if the current following distance does not meet the value requirement of the target following distance. When the current following distance does not meet the value requirement of the target following distance, the driver can be reminded by voice or text information. For example, the current following distance is too close by 20 m can be displayed in a navigation map.

[0102] In an embodiment, the vehicle following distance control method can further include: obtaining a current following distance between the vehicle and a front following vehicle; determining whether the current following distance meets a value requirement of a target following distance; and sending a following distance reminding information if the current following distance does not meet the value requirement of the target following distance. When the current following distance does not meet the value requirement of the target following distance, the driver can be reminded by voice or text information. For example, the current following distance is too close by 20 m can be displayed in a navigation map.

[0103] Referring to Figure 3 , a calculation method for assisting a driver in following a vehicle according to multi-dimensional information is shown. After the road type is obtained, the maximum speed of the current road can be determined according to the road type, and the maximum gap S, that is, the first safe following distance, can be obtained by multiplying the maximum speed by 3 seconds. The road surface humidity can be obtained by a vehicle-mounted road surface humidity sensor, and the road surface friction coefficient can be determined according to the road surface humidity. The braking distance S can be calculated according to the formula V 2 / 2μg, V is the current speed, μ is the friction coefficient, and g is the acceleration of gravity. The reaction distance can be calculated by multiplying the current speed by the reaction time, and the safe distance A, that is, the second safe following distance, can be obtained by adding the reaction distance to the braking distance. Finally, the visibility level of the current road is obtained, which includes: visibility level one, visibility level two, and visibility level three. When the visibility is greater than or equal to 200 m, the visibility level is level one; when the visibility is less than 200 m and greater than or equal to 100 m, the visibility level is level two; and when the visibility is less than 100 m and greater than or equal to 50 m, the visibility level is level three. Whether the current distance and speed are appropriate can be determined according to the first safe following distance, the second safe following distance, and the visibility level, and intelligent reminding can be performed if they are not appropriate.

[0104] Referring to Figure 4, shows a kind of calculation method schematic diagram provided by the application embodiment for assisting driver to follow vehicle according to multi-dimension information in combination with specific data.When determining that the current road surface is ordinary lane of highway, the maximum speed of current road can be obtained as 100 Km / h, and the maximum gap obtained by multiplying the maximum speed by 3 seconds is 84 m, i.e. the first safe following distance is 84 m.When the road surface friction coefficient obtained from the road surface humidity detected by road surface humidity sensor is 0.6, and the current speed is obtained as 90 Km / h, the safe distance can be calculated based on the formula V 2 / 2 μg, i.e. the second safe following distance is 78 m.Finally, the visibility of current road surface is obtained as greater than 200 m, and the visibility level is determined as level one.According to the first safe following distance, the second safe following distance and the visibility level, whether the current distance and speed are suitable is comprehensively judged, and if not, intelligent reminding can be performed.

[0105] Referring to Figure 5 , shows a scheme flow chart for assisting driver to follow vehicle according to multi-dimension information provided by the application embodiment.The scheme includes the following steps: step 301, front and rear vehicles are bound.The intelligent vehicle system can be loaded on the vehicle, and the driver can enter the following mode by using manual input or voice input through the center control screen, input the license plate of the front vehicle to be bound, the intelligent vehicle system can communicate with the front vehicle information through the license plate information, send the binding instruction to the front vehicle, and the front vehicle owner can confirm the binding relationship through the center control screen.After binding, the front vehicle uploads the position information to the following system through GPS positioning;the vehicle receives the driving information of the front vehicle through the following system using the center control screen, and displays the driving information on the map of the vehicle.Step 302, judge current road condition information.The intelligent vehicle system judges the first safe distance of the current driving section through GPS positioning;the intelligent vehicle system obtains the second safe following distance under the current condition through the current road surface humidity and driving speed;the intelligent vehicle system obtains the visibility B of the current time and section from the network database through GPS positioning.Step 303, obtain suitable distance and speed.The intelligent vehicle system comprehensively judges the target following distance by combining the first safe following distance, the second safe following distance and the visibility.Step 304, notify the driver.The intelligent vehicle system reminds the driver of the corresponding driving operation.

[0106] It should be noted that, for the method embodiment, in order to simply describe, it is expressed as a series of action combinations, but those skilled in the art should know that the application embodiment is not limited by the described action sequence, because according to the application embodiment, certain steps can be performed in other order or simultaneously.Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the involved actions are not necessarily the application embodiment.

[0107] Referring to Figure 6 , a structure block diagram of a vehicle following distance control device provided by an embodiment of the present application is shown, which can specifically include the following modules:

[0108] The first safe following distance determination module 401 is configured to acquire the maximum speed limit of the current driving road of the vehicle, and determine the first safe following distance under the maximum speed limit according to the maximum speed limit.

[0109] The second safe following distance determination module 402 is configured to acquire the current speed of the vehicle, and determine the second safe following distance according to the current speed.

[0110] The road visibility acquisition module 403 is configured to acquire the current visibility of the current driving road of the vehicle.

[0111] The target following distance determination module 404 is configured to determine the target following distance according to the first safe following distance, the second safe following distance, and the current visibility.

[0112] Optionally, the target following distance determination module 404 is specifically configured to: determine whether the current visibility is less than a visibility threshold; if the current visibility is less than the visibility threshold, acquire a mapping relationship between visibility and following distance, and determine the target following distance according to the current visibility and the mapping relationship; if the current visibility is greater than or equal to the visibility threshold, determine whether the second safe following distance is greater than or equal to the first safe following distance; if the second safe following distance is greater than or equal to the first safe following distance, determine that the target following distance is greater than or equal to the second safe following distance; if the second safe following distance is less than the first safe following distance, determine that the target following distance is greater than or equal to the second safe following distance and less than or equal to the first safe following distance.

[0113] Optionally, the first safe following distance determination module 401 is specifically configured to: take the product of the maximum speed limit and a preset time length as the first safe following distance.

[0114] Optionally, the second safe following distance determination module 402 is specifically configured to: acquire the road surface humidity information detected by the sensor; determine the road surface friction coefficient according to the road surface humidity information; and calculate the second safe following distance through the following formula:

[0115] ,

[0116] wherein, S is the second safe following distance, V is the current speed, g is the gravity acceleration, μ is the road surface friction coefficient, and t is the brake reaction time of the driver.

[0117] Optionally, the device further comprises:

[0118] The following vehicle binding module is configured to acquire license plate information of the target vehicle, bind the license plate information of the target vehicle, and take the target vehicle as the following vehicle.

[0119] The following vehicle driving information acquisition module is configured to acquire driving information of the following vehicle.

[0120] The following module is configured to perform a following behavior on the following vehicle according to the driving information of the following vehicle.

[0121] Optionally, the device further comprises:

[0122] The following vehicle driving information display module is configured to display the driving information of the following vehicle on a navigation map.

[0123] Optionally, the device further comprises:

[0124] The current following distance acquisition module is configured to acquire a current following distance between the vehicle and a front following vehicle.

[0125] The current following distance judgment module is configured to judge whether the current following distance meets the value requirement of the target following distance.

[0126] The following distance reminding module is configured to send a following distance reminding information if the current following distance does not meet the value requirement of the target following distance.

[0127] For the device embodiment, it is basically similar to the method embodiment, so the description is relatively simple, and the related parts refer to the part of the method embodiment.

[0128] The embodiment of the application further provides an electronic device, comprising:

[0129] The electronic device comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program is executed by the processor to realize each process of the vehicle following distance control method embodiment and achieve the same technical effect, and thus the description is omitted here.

[0130] The embodiment of the application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize each process of the vehicle following distance control method embodiment and achieve the same technical effect, and thus the description is omitted here.

[0131] The various embodiments described in this specification are intended to be illustrative only and in no way limit the scope of the application. One skilled in the art will readily recognize from the disclosure herein, possible alternative techniques within the scope of the application. Accordingly, the embodiments described in this specification are set forth without any loss of generality to, and without imposing limitations upon, the claimed invention.

[0132] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, apparatus, or computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects all generally referred to herein as a "circuit" or "module." Furthermore, the present application can take the form of a computer program product on a computer-readable storage medium having computer program code embodied in the medium.

[0133] Embodiments of the present application are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing system or other programmable data processing terminal apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0134] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0135] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal apparatus to cause a series of operational steps to be performed on the computer or other programmable terminal apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal apparatus provide steps for implementing the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0136] While the preferred embodiments of the application have been described above, it should be understood that many modifications and adaptations to those embodiments will be possible on the basis of the foregoing description and drawings. Therefore, the following claims are intended to cover all such modifications and adaptations which come within the scope of the preferred embodiments of the application.

[0137] Finally, it should be noted that the terms "first", "second", and the like, herein do not denote any order, quantity, combination, or importance, but rather are used to distinguish one element from another, and are not intended to denote a limitation (such as "first" versus "second"). Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0138] The above describes in detail a vehicle following distance control method and device, electronic equipment and storage medium provided by the present application. The principles and implementation manners of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. For those skilled in the art, the specific implementation manners and application scope can be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A method for controlling vehicle following distance, characterized in that, The method includes: Obtain the maximum speed limit of the road the vehicle is currently traveling on, and determine the first safe following distance under the maximum speed limit based on the maximum speed limit; Obtain the current speed of the vehicle and determine a second safe following distance based on the current speed; Obtain the current visibility of the road the vehicle is currently traveling on; Determine whether the current visibility is less than a visibility threshold; If the current visibility is less than the visibility threshold, then the mapping relationship between visibility and following distance is obtained, and the target following distance is determined based on the current visibility and the mapping relationship. If the current visibility is greater than or equal to the visibility threshold, then determine whether the second safe following distance is greater than or equal to the first safe following distance; If the second safe following distance is greater than or equal to the first safe following distance, then the target following distance is determined to be greater than or equal to the second safe following distance. If the second safe following distance is less than the first safe following distance, then the target following distance is determined to be greater than or equal to the second safe following distance and less than or equal to the first safe following distance.

2. The vehicle following distance control method according to claim 1, characterized in that, Determining the first safe following distance under the maximum speed limit based on the maximum speed limit includes: The product of the maximum speed limit and the preset duration is used as the first safe following distance.

3. The vehicle following distance control method according to claim 1, characterized in that, The vehicle is equipped with a road surface humidity detection sensor. Determining the second safe following distance based on the current vehicle speed includes: Obtain the road surface humidity information detected by the sensor; The road surface friction coefficient is determined based on the road surface humidity information. The second safe following distance is calculated using the following formula: ， Where S is the second safe following distance, V is the current vehicle speed, g is the gravitational acceleration, μ is the road friction coefficient, and t is the driver's braking reaction time.

4. The vehicle following distance control method according to claim 1, characterized in that, The method further includes: Obtain the license plate information of the target vehicle, bind the license plate information of the target vehicle, and designate the target vehicle as the following vehicle; Obtain the driving information of the following vehicle; Based on the driving information of the vehicle being followed, the vehicle being followed is followed.

5. The vehicle following distance control method according to claim 4, characterized in that, The method further includes: The driving information of the following vehicle will be displayed on the navigation map.

6. The vehicle following distance control method according to claim 1, characterized in that, The method further includes: Obtain the current following distance between the vehicle and the vehicle ahead; Determine whether the current following distance meets the target following distance requirement; If the current following distance does not meet the target following distance requirement, a following distance reminder message will be sent.

7. A vehicle following distance control device, characterized in that, The device includes: The first safe following distance determination module is used to obtain the maximum speed limit of the road on which the vehicle is currently traveling, and determine the first safe following distance under the maximum speed limit based on the maximum speed limit; The second safe following distance determination module is used to obtain the current speed of the vehicle and determine the second safe following distance based on the current speed. The road visibility acquisition module is used to acquire the current visibility of the road on which the vehicle is currently traveling; The target following distance determination module is used to determine the target following distance based on the first safe following distance, the second safe following distance, and the current visibility. The target following distance determination module is specifically used for: determining whether the current visibility is less than a visibility threshold; if the current visibility is less than the visibility threshold, obtaining the mapping relationship between visibility and following distance, and determining the target following distance based on the current visibility and the mapping relationship; if the current visibility is greater than or equal to the visibility threshold, determining whether the second safe following distance is greater than or equal to the first safe following distance; if the second safe following distance is greater than or equal to the first safe following distance, determining that the target following distance is greater than or equal to the second safe following distance; if the second safe following distance is less than the first safe following distance, determining that the target following distance is greater than or equal to the second safe following distance and less than or equal to the first safe following distance.

8. An electronic device, characterized in that, include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the steps of the vehicle following distance control method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the steps of the vehicle following distance control method as described in any one of claims 1-6.

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