Control method and system for preventing rear-end collision of rear vehicle, vehicle and equipment
By calculating the critical speed of the collision when the rear vehicle and the bicycle are rear-ended and triggering early warning, the rear-ended accident caused by ignoring the threat of rear-ended vehicles in the prior art is solved, and the safety identification and early warning capabilities of the vehicle are improved.
Patent Information
- Application Number
- CN202411435770.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-02-11
AI Technical Summary
The existing vehicle safety system ignores the threat of rear vehicles in the anti-collision design, resulting in a rear-end collision accident due to the failure of rear-end brakes when stationary or low speed.
By obtaining the distance and speed between the rear vehicle and the bicycle, calculate the critical speed of the collision when the rear vehicle and the bicycle are rear-ended, and trigger an early warning operation when the rear vehicle speed exceeds this critical speed, reminding the driver to avoid rear-ended collision.
Effectively identify and warn rear vehicles that may cause collision threats, reduce rear-end collision accidents, and improve vehicle safety.
Smart Images
Figure CN119408534A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle safety technology, and in particular to a control method, system, vehicle and equipment for preventing a rear-end vehicle from rear-ending a vehicle. Background Art
[0002] At present, the safety driving of the whole vehicle is mainly based on the anti-collision design of the forward and lateral perception systems of the vehicle, ignoring the threat of the rear vehicle. Many accidents are caused by the rear vehicle not braking in time when waiting for the red light; or on the highway, the rear vehicle does not brake in time due to congestion. Although the rear vehicle has AEB as a basis, it also has suppression conditions, which can reduce the occurrence of accidents to a certain extent, but this kind of accident also has certain safety hazards for the front vehicle. Summary of the invention
[0003] Based on this, it is necessary to provide a control method, system, vehicle and equipment to prevent rear-end collisions with rear vehicles in response to the above-mentioned technical problems. When the vehicle is stationary or at a low speed, it can effectively identify the rear vehicle that may pose a collision threat to the vehicle, and warn the driver in advance to avoid rear-end collisions caused by untimely braking of the rear vehicle. This improves the hazard identification ability of the rear vehicle, which can reduce the occurrence of collision accidents to a certain extent and improve vehicle safety.
[0004] In a first aspect, a control method for preventing a rear-end collision is provided, comprising:
[0005] Obtain the distance between the rear vehicle and the vehicle itself and the speed of the rear vehicle;
[0006] Obtaining a critical collision speed when the rear vehicle collides with the own vehicle according to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle, and the speed of the own vehicle;
[0007] When the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation.
[0008] In some examples, obtaining the critical collision speed when the rear vehicle collides with the own vehicle according to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle, and the speed of the own vehicle includes:
[0009] Obtaining a critical distance according to the distance between the rear vehicle and the vehicle and a preset safety reserve distance;
[0010] According to the critical distance, the type of the rear vehicle and the speed of the own vehicle, a critical collision speed when the rear vehicle collides with the own vehicle is obtained.
[0011] In some examples, obtaining the critical collision speed when the rear vehicle collides with the own vehicle according to the critical distance, the type of the rear vehicle, and the speed of the own vehicle includes:
[0012] According to the type of the rear vehicle, obtaining a maximum deceleration corresponding to the type of the rear vehicle;
[0013] According to the critical distance, the maximum deceleration and the speed of the own vehicle, a critical collision speed when the rear vehicle collides with the own vehicle is obtained.
[0014] In some examples, the following vehicle types include:
[0015] Part or all of large trucks, large buses, small trucks, small buses, and sedans.
[0016] In some examples, when the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation, including:
[0017] When the speed of the rear vehicle is greater than the critical collision speed, the vehicle sends out an alarm, wherein the alarm mode includes at least one of a display alarm and a sound alarm.
[0018] In some examples, when the speed of the rear vehicle is greater than the collision critical speed, the method further includes:
[0019] The collision time is estimated according to the collision critical speed to provide the driver of the vehicle with reaction time.
[0020] In a second aspect, a control system for preventing a rear-end collision is provided, comprising:
[0021] An acquisition module is used to obtain the distance between the rear vehicle and the vehicle itself and the speed of the rear vehicle;
[0022] A collision critical speed determination module is used to obtain a collision critical speed when the rear vehicle collides with the own vehicle according to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle;
[0023] The control module is used to trigger a warning operation when the speed of the rear vehicle is greater than the collision critical speed.
[0024] In a third aspect, a vehicle is provided, comprising: a control system for preventing rear-end collision of a rear vehicle according to the second aspect.
[0025] In a fourth aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of the control method for preventing rear-end collision of a rear vehicle according to the first aspect and any possible implementation method of the first aspect are implemented.
[0026] In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the steps of the control method for preventing rear-end collision of a rear vehicle according to the above-mentioned first aspect and any possible implementation method of the first aspect are implemented.
[0027] In a sixth aspect, a computer program product is provided, on which a computer program is stored. When the program is executed by a processor, the steps of the control method for preventing rear-end collision of a rear vehicle according to the above-mentioned first aspect and any possible implementation method of the first aspect are implemented.
[0028] According to the embodiment of the present application, by obtaining the distance between the rear vehicle and the vehicle, and the speed of the rear vehicle, and according to the distance between the rear vehicle and the vehicle, the type of the rear vehicle, and the speed of the vehicle, the critical speed of collision when the rear vehicle and the vehicle rear-end collide with each other is obtained, and when the speed of the rear vehicle is greater than the critical speed of collision, the warning operation is triggered. Thus, when the vehicle is stationary or at a low speed, the rear vehicle that may pose a collision threat to the vehicle can be effectively identified, and the driver can be warned in advance to avoid rear-end collision accidents caused by untimely braking of the rear vehicle, thereby improving the danger identification ability of the rear vehicle, and can reduce the occurrence of collision accidents to a certain extent, and improve vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0030] Figure 1 A flow chart of a control method for preventing a rear-end collision provided by an embodiment of the present application;
[0031] Figure 2 A schematic diagram of an application of a control method for preventing a rear-end vehicle from rear-ending a vehicle provided in an embodiment of the present application;
[0032] Figure 3 A schematic diagram of critical collision speeds of different types of vehicles at different distances according to a control method for preventing rear-end collisions provided in an embodiment of the present application;
[0033] Figure 4 A structural block diagram of a control system for preventing a rear-end collision provided by an embodiment of the present application;
[0034] Figure 5 A structural block diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0035] The present application is further described in detail below in conjunction with the embodiments and drawings. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. It is also necessary to explain that, for ease of description, only the parts related to the application are shown in the drawings.
[0036] It should be noted that, in the absence of conflict, the embodiments of the present application, that is, the features of the embodiments, can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0037] The following describes in detail the control method, system, device and medium for preventing rear-end collision of a rear vehicle according to an embodiment of the present application in conjunction with the accompanying drawings.
[0038] Figure 1 FIG. 1 is a flow chart of a control method for preventing a rear-end collision according to an embodiment of the present application. Figure 1 As shown, according to an embodiment of the present application, the control method for preventing a rear-end collision of a rear vehicle includes the following steps:
[0039] S101: Obtain the distance between the rear vehicle and the own vehicle and the speed of the rear vehicle.
[0040] The distance between the rear vehicle and the own vehicle and the speed of the rear vehicle can be detected by a detection device configured on the own vehicle, such as a radar.
[0041] like Figure 2 As shown, the rear vehicle is called the target vehicle. The distance between the rear vehicle and the vehicle is recorded as dx, and the speed of the rear vehicle is recorded as Vr. For example, the distance dx between the rear vehicle and the vehicle and the speed Vr of the rear vehicle can be detected in real time by a detection device such as a radar installed on the vehicle.
[0042] S102: Obtaining a critical collision speed when the rear vehicle collides with the own vehicle according to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle, and the speed of the own vehicle.
[0043] In one embodiment of the present application, a critical collision speed when the rear vehicle and the own vehicle rear-end each other is obtained based on the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle, including: obtaining a critical distance based on the distance between the rear vehicle and the own vehicle and a preset safety reserved distance; obtaining a critical collision speed when the rear vehicle and the own vehicle rear-end each other based on the critical distance, the type of the rear vehicle and the speed of the own vehicle.
[0044] like Figure 2 As shown, the preset safety reserve distance is recorded as ds, and the critical distance is recorded as dr, then:
[0045] Critical distance dr = distance between the rear vehicle and the vehicle dx - safety reserve distance denoted as ds.
[0046] In the above example, the critical collision speed when the rear vehicle and the own vehicle rear-end each other is obtained based on the critical distance, the type of the rear vehicle and the speed of the own vehicle, including: based on the type of the rear vehicle, obtaining the maximum deceleration corresponding to the type of the rear vehicle; based on the critical distance, the maximum deceleration and the speed of the own vehicle, obtaining the critical collision speed when the rear vehicle and the own vehicle rear-end each other.
[0047] Generally speaking, different types of vehicles have different maximum decelerations. For example, for a large truck, the maximum deceleration can be -7m / s. 2 , small passenger cars can take the value of -10m / s 2 .
[0048] Of course, the following vehicle types may also include: part or all of a large truck, a large passenger car, a small truck, a small passenger car, and a sedan. The corresponding maximum deceleration may be determined in advance for each type of vehicle.
[0049] Combination Figure 2 As shown, in order to prevent the target vehicle (i.e., the following vehicle) from rear-ending the vehicle, a certain safety distance is reserved, denoted as ds. For example, ds is set to 2 meters. Of course, 2 meters is only exemplary and can be changed as needed. 2 -Vx 2 = 2ax, given the speed Vx of the vehicle and the distance dx between the vehicle behind and the vehicle. Assuming that a collision happens, that is, the driver behind the vehicle slams on the brakes and collides with the vehicle behind, the critical collision speed V of the vehicle behind can be calculated using these data.
[0050] Based on the above assumptions, when the distance between the rear vehicle and the own vehicle is within 100 meters, the embodiment of the present application is used as an example to calculate the critical collision speed V when the rear vehicle and the own vehicle collide with each other.
[0051] Taking the stationary vehicle as an example, the collision critical speed V at different critical distances dr is obtained. 2 =2a*dr. Figure 3 As shown, the collision critical speed V corresponding to the large truck and the small passenger car under some critical distances dr is shown.
[0052] S103: When the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation.
[0053] In a specific example, when the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation, including: when the speed of the rear vehicle is greater than the critical collision speed, the vehicle issues an alarm, wherein the alarm mode includes at least one of a display alarm and a sound alarm.
[0054] Depend on Figure 3It can be seen that if the target type of the rear vehicle is a large truck, when the rear vehicle is 50m away from the vehicle, if the speed is greater than or equal to 25.09m / s, the vehicle will sound an alarm through the instrument, such as: "Be careful to avoid the vehicle behind."
[0055] If the target type of the rear vehicle is a small passenger car, when the rear vehicle is 50m away from the vehicle and the speed is >= 30m / s, the vehicle will sound an alarm through the instrument, such as: "Be careful to avoid the vehicle behind."
[0056] In one embodiment of the present application, when the speed of the rear vehicle is greater than the critical collision speed, the method further includes: estimating the collision time according to the critical collision speed to provide the driver of the vehicle with reaction time. Figure 3 As shown in the figure, after calculating the critical speed V, the approximate collision time can be simply calculated by t=dx / (V-Vx), and the driver can react within this time. In special cases, if the rear driver does not have the awareness to brake, the driver of the vehicle will also have t / 2 time to react. Moreover, AEB has basically become a standard feature for common vehicles, which can win a certain amount of avoidance time for the vehicle. In turn, driving safety is improved.
[0057] According to the control method for preventing rear-end collision of the rear vehicle of the embodiment of the present application, the distance between the rear vehicle and the vehicle and the speed of the rear vehicle are obtained, and the critical speed of collision when the rear vehicle and the vehicle rear-end collide is obtained according to the distance between the rear vehicle and the vehicle, the type of the rear vehicle and the speed of the vehicle, and when the speed of the rear vehicle is greater than the critical speed of collision, the warning operation is triggered. Therefore, when the vehicle is stationary or at a low speed, the rear vehicle that may pose a collision threat to the vehicle can be effectively identified, and the driver can be warned in advance to avoid rear-end collision accidents caused by untimely braking of the rear vehicle, thereby improving the danger identification ability of the rear vehicle, reducing the occurrence of collision accidents to a certain extent, and improving vehicle safety.
[0058] Figure 4 FIG. 1 is a block diagram of a control system for preventing a rear-end collision according to an embodiment of the present application. Figure 4 As shown, according to an embodiment of the present application, a control system for preventing a rear-end collision of a rear vehicle includes: an acquisition module 410, a collision critical speed determination module 420 and a control module 430, wherein:
[0059] An acquisition module 410 is used to obtain the distance between the rear vehicle and the vehicle and the speed of the rear vehicle;
[0060] A collision critical speed determination module 420 is used to obtain a collision critical speed when the rear vehicle collides with the own vehicle according to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle;
[0061] The control module 430 is used to trigger a warning operation when the speed of the rear vehicle is greater than the collision critical speed.
[0062] According to the control system for preventing rear-end collision of the rear vehicle of the embodiment of the present application, the distance between the rear vehicle and the vehicle and the speed of the rear vehicle are obtained, and the critical speed of collision when the rear vehicle and the vehicle rear-end collide is obtained according to the distance between the rear vehicle and the vehicle, the type of the rear vehicle and the speed of the vehicle, and when the speed of the rear vehicle is greater than the critical speed of collision, the warning operation is triggered. Therefore, when the vehicle is stationary or at a low speed, the rear vehicle that may pose a collision threat to the vehicle can be effectively identified, and the driver can be warned in advance to avoid rear-end collision accidents caused by untimely braking of the rear vehicle, thereby improving the danger identification ability of the rear vehicle, reducing the occurrence of collision accidents to a certain extent, and improving vehicle safety.
[0063] The specific definition of the control system for preventing rear-end collision of rear vehicles can be found in the definition of the control method for preventing rear-end collision of rear vehicles mentioned above, which will not be repeated here. Each module of the above-mentioned control system for preventing rear-end collision of rear vehicles can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.
[0064] In one embodiment, a vehicle is provided, comprising: a control system for preventing a rear-end collision of a rear vehicle according to any of the above embodiments. The vehicle can obtain the distance between the rear vehicle and the vehicle itself and the speed of the rear vehicle, and obtain the critical collision speed when the rear vehicle and the vehicle itself collide with each other according to the distance between the rear vehicle and the vehicle itself, the type of the rear vehicle and the speed of the vehicle itself, and trigger an early warning operation when the speed of the rear vehicle is greater than the critical collision speed. Thus, when the vehicle itself is stationary or at a low speed, it can effectively identify the rear vehicle that may pose a collision threat to the vehicle itself, and warn the driver in advance to avoid rear-end collision accidents caused by untimely braking of the rear vehicle, thereby improving the danger identification ability of the rear vehicle, and can reduce the occurrence of collision accidents to a certain extent, thereby improving vehicle safety.
[0065] In addition, other structures and functions of the vehicle according to the embodiment of the present application are known to ordinary technicians in the field and will not be elaborated here.
[0066] In one embodiment, a computer device is provided. Figure 5 This is a block diagram of the computer device provided in the embodiment of the present application, refer to Figure 5 The computer device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the control method for preventing a rear-end collision with a rear-end vehicle described above is implemented. For example, the following steps are performed: obtaining the distance between the rear vehicle and the vehicle and the speed of the rear vehicle;
[0067] According to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle, a critical collision speed when the rear vehicle and the own vehicle collide with each other is obtained;
[0068] When the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation.
[0069] The embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, and the processor executes the computer program to implement the above-mentioned control method embodiment for preventing the rear-end collision of the rear vehicle. For example, the following steps are executed: obtaining the distance between the rear vehicle and the vehicle and the speed of the rear vehicle;
[0070] According to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle, a critical collision speed when the rear vehicle and the own vehicle collide with each other is obtained;
[0071] When the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation.
[0072] The present application embodiment provides a computer program product, which includes instructions. When the instructions are executed, the method described in the embodiment of the present application is executed. For example, it can be executed Figure 1 The steps of the control method for preventing a rear-end collision with a rear vehicle shown in the figure are, for example, performed as follows: obtaining the distance between the rear vehicle and the vehicle and the speed of the rear vehicle;
[0073] According to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle, a critical collision speed when the rear vehicle and the own vehicle collide with each other is obtained;
[0074] When the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation.
[0075] Those of ordinary skill in the art can understand that all or part of the processes in the methods for implementing the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).
[0076] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0077] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A control method for preventing a rear-end collision, characterized in that: include: Obtain the distance between the rear vehicle and the vehicle itself and the speed of the rear vehicle; According to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle, a critical collision speed when the rear vehicle and the own vehicle collide with each other is obtained; When the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation.
2. The control method for preventing a rear-end collision of a rear vehicle according to claim 1, characterized in that: The step of obtaining the critical collision speed when the rear vehicle collides with the vehicle from behind according to the distance between the rear vehicle and the vehicle, the type of the rear vehicle, and the speed of the vehicle comprises: Obtaining a critical distance according to the distance between the rear vehicle and the vehicle and a preset safety reserve distance; According to the critical distance, the type of the rear vehicle and the speed of the own vehicle, a critical collision speed when the rear vehicle collides with the own vehicle is obtained.
3. The control method for preventing a rear-end collision of a rear vehicle according to claim 2, characterized in that: The step of obtaining the critical speed of collision when the rear vehicle collides with the vehicle from behind based on the critical distance, the type of the rear vehicle, and the speed of the vehicle comprises: According to the type of the rear vehicle, obtaining a maximum deceleration corresponding to the type of the rear vehicle; According to the critical distance, the maximum deceleration and the speed of the own vehicle, a critical collision speed when the rear vehicle collides with the own vehicle is obtained.
4. The control method for preventing a rear-end collision of a rear vehicle according to claim 3, characterized in that: The following vehicle types include: Part or all of large trucks, large buses, small trucks, small buses, and sedans.
5. The control method for preventing a rear-end collision of a rear vehicle according to any one of claims 1 to 4, characterized in that: When the speed of the rear vehicle is greater than the critical collision speed, the vehicle triggers a warning operation, including: When the speed of the rear vehicle is greater than the critical collision speed, the vehicle sends out an alarm, wherein the alarm mode includes at least one of a display alarm and a sound alarm.
6. The control method for preventing a rear-end collision of a rear vehicle according to claim 1, characterized in that: When the speed of the rear vehicle is greater than the collision critical speed, the method further includes: The collision time is estimated according to the collision critical speed to provide the driver of the vehicle with reaction time.
7. A control system for preventing a rear-end collision, characterized in that: include: An acquisition module is used to obtain the distance between the rear vehicle and the vehicle itself and the speed of the rear vehicle; A collision critical speed determination module is used to obtain a collision critical speed when the rear vehicle collides with the own vehicle according to the distance between the rear vehicle and the own vehicle, the type of the rear vehicle and the speed of the own vehicle; The control module is used to trigger a warning operation when the speed of the rear vehicle is greater than the collision critical speed.
8. A vehicle, characterized in that: include: A control system for preventing rear-end collisions according to claim 7.
9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the control method for preventing a rear-end collision of a rear vehicle according to any one of claims 1 to 6 is implemented.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, a control method for preventing a rear-end collision of a rear vehicle according to any one of claims 1 to 6 is implemented.