Vehicle control method, vehicle-mounted controller and vehicle

Abstract

The invention discloses a vehicle control method, a vehicle-mounted controller and a vehicle. Vehicle rear-end collision accidents are effectively prevented. The vehicle control method comprises the steps that road condition information in front of a vehicle and vehicle following information of a vehicle behind the vehicle are obtained; the risk grade evaluation standard of the vehicle being subjected to rear-end collision is adaptively adjusted according to the road condition information in front of the vehicle, and then the risk grade of the vehicle being subjected to rear-end collision is evaluated according to the vehicle following information of the rear vehicle and the risk grade evaluation standard; and when the evaluated risk level reaches or exceeds a preset level, the vehicle is controlled to send alarm information to a rear vehicle and / or a driver of the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle safety technology, and more specifically, to a vehicle control method, a vehicle-mounted controller and a vehicle. Background Art

[0002] Rear-end collisions are one of the most common types of traffic accidents. Rear-end collisions refer to the collision of the front of a vehicle with the rear of the vehicle in front when two vehicles are following each other in the same lane. The main reason for rear-end collisions is that the driver does not accurately judge the driving status of the vehicle in front and fails to slow down in advance. How to reduce the occurrence of rear-end collisions is a social security issue that needs to be solved urgently. Summary of the invention

[0003] In view of this, the present invention provides a vehicle control method, a vehicle-mounted controller and a vehicle to effectively prevent vehicle rear-end collision accidents.

[0004] A vehicle control method, comprising:

[0005] Obtain the road condition information in front of the vehicle and the following vehicle information behind;

[0006] Adaptively adjusting the risk level assessment criteria of the vehicle being rear-ended according to the road condition information in front of the vehicle, and then assessing the risk level of the vehicle being rear-ended according to the following vehicle information of the rear vehicle and the risk level assessment criteria;

[0007] When the assessed risk level reaches or exceeds a preset level, the vehicle is controlled to send an alarm message to the rear vehicle and / or the driver of the vehicle.

[0008] Optionally, controlling the vehicle to send an alarm message to the vehicle behind and / or the driver of the vehicle includes: controlling the vehicle to send an alarm message corresponding to the currently assessed risk level to the vehicle behind and / or the driver of the vehicle.

[0009] Optionally, controlling the vehicle to send an alarm message to the vehicle behind includes: controlling the rear lights and / or the rear windshield display screen of the vehicle to display the alarm message.

[0010] Optionally, controlling the vehicle to send an alarm message to the driver of the vehicle includes: controlling the vehicle to display the alarm message on the instrument panel and / or the central control screen, accompanied by a sound alarm.

[0011] Optionally, the following vehicle information of the rear vehicle includes a following distance S of the rear vehicle and a following distance reduction speed a; the risk level includes no risk, low collision risk, medium collision risk and high collision risk;

[0012] The step of evaluating the risk level of the vehicle being rear-ended based on the following vehicle information of the rear vehicle and the risk level evaluation standard includes:

[0013] Compare the following distance S of the rear vehicle with the first preset value S1 and the second preset value S2, and compare the following distance reduction speed a with the third preset value a1; a1≥0, S1>S2>0;

[0014] If S≥S1, the risk level of the vehicle being rear-ended is determined to be no risk;

[0015] If S2<S<S1 and a≤a1, the risk level of rear-end collision of the vehicle is determined to be low collision risk;

[0016] If S2<S<S1 and a>a1, the risk level of rear-end collision of the vehicle is determined to be medium collision risk;

[0017] If S<S2 and a≤a1, the risk level of rear-end collision of the vehicle is determined to be medium collision risk;

[0018] If S<S2 and a>a1, the risk level of the vehicle being rear-ended is determined to be a high collision risk.

[0019] Optionally, obtaining road condition information ahead of the vehicle includes:

[0020] Use high-precision electronic maps, vehicle networking technology and on-board forward radar detection technology to obtain road condition information in front of the vehicle.

[0021] Optionally, the road condition information in front of the vehicle includes: the technical grade of the road in front of the vehicle, the traffic light information in front of the vehicle, and the obstacle information in front of the vehicle.

[0022] Optionally, obtaining the following vehicle information of the rear vehicle includes: obtaining the following vehicle information of the rear vehicle using a vehicle-mounted rear-probe radar detection technology.

[0023] A vehicle-mounted controller comprises: a processor and a memory, wherein a computer program is stored on the processor, and when the computer program is executed by the processor, any vehicle control method disclosed above is implemented.

[0024] A vehicle comprises: any vehicle-mounted controller disclosed above.

[0025] It can be seen from the above technical solutions that the present invention determines the risk level of rear-end collision of the vehicle according to the following vehicle information of the rear vehicle, and issues an alarm message in a timely manner according to the risk level to prompt the rear vehicle to maintain a safe distance and / or prompt the driver of the vehicle to approach a dangerous target, thereby effectively preventing vehicle rear-end collision accidents. In addition, the present invention also adaptively adjusts the risk level assessment standard according to the following vehicle information of the rear vehicle, so as to actively respond to complex and changeable traffic environments, improve the accuracy and reliability of risk assessment, and thus enhance the active safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A flow chart of a vehicle control method disclosed in an embodiment of the present invention;

[0028] Figure 2 A flow chart of another vehicle control method disclosed in an embodiment of the present invention;

[0029] Figure 3a A schematic diagram of alarm information display content when there is no risk disclosed in an embodiment of the present invention;

[0030] Figure 3b A schematic diagram of displaying alarm information at a low collision risk disclosed in an embodiment of the present invention;

[0031] Figure 3c A schematic diagram of the display content of an alarm message when there is a medium collision risk disclosed in an embodiment of the present invention;

[0032] Figure 3d A schematic diagram of displaying alarm information when there is a high risk of collision disclosed in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of a vehicle traveling in the same lane following another vehicle disclosed in an embodiment of the present invention;

[0034] Figure 5 The present invention is a schematic diagram of the structure of a vehicle-mounted controller disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1 , an embodiment of the present invention discloses a vehicle control method, comprising:

[0037] Step S01: Obtain the road condition information in front of the vehicle and the following vehicle information behind the vehicle, and then proceed to step S02.

[0038] Step S02: Adaptively adjust the risk level assessment standard of the vehicle being rear-ended according to the road condition information in front of the vehicle, then assess the risk level of the vehicle being rear-ended according to the following vehicle information of the rear vehicle and the risk level assessment standard, and then enter step S03.

[0039] Step S03: Determine whether the assessed risk level reaches or exceeds the preset level. If so, proceed to step S04; if not, return to step S01.

[0040] Step S04: Control the vehicle to send an alarm message to the vehicle behind and / or the driver of the vehicle, and then enter step S01.

[0041] The embodiment of the present invention is applied to the on-board controller of the vehicle, which determines the risk level of the vehicle being rear-ended based on the following vehicle information of the rear vehicle, and issues an alarm message in a timely manner according to the risk level to prompt the rear vehicle to maintain a safe distance and / or prompt the driver of the vehicle to approach a dangerous target, thereby effectively preventing vehicle rear-end collision accidents. In addition, the embodiment of the present invention also adaptively adjusts the risk level assessment standard based on the following vehicle information of the rear vehicle, so as to actively respond to complex and changing traffic environments, improve the accuracy and reliability of risk assessment, and thus enhance the active safety of the vehicle.

[0042] Optionally, the method of controlling the vehicle to send an alarm message to the rear vehicle may be: controlling the rear lights and / or rear windshield display screen of the vehicle to display the alarm message. The rear windshield display screen is, for example, a rear windshield LED (Light-Emitting Diode) flexible display screen. At this time, the on-board controller may include, for example, an intelligent driving domain controller and an intelligent cockpit domain controller; or, the on-board controller may also adopt a driving and parking cabin integrated domain controller, which refers to a domain controller that integrates the functions of an intelligent driving domain controller and an intelligent cockpit domain controller.

[0043] Optionally, based on any of the embodiments disclosed above, the method of controlling the vehicle to send an alarm message to the driver of the vehicle may be: controlling the vehicle to display the alarm message on the instrument panel and / or central control screen, accompanied by a sound alarm.

[0044] Optionally, based on any of the embodiments disclosed above, the embodiments of the present invention design different alarm messages corresponding to different risk levels. When the risk level reaches or exceeds a preset level, the embodiments of the present invention control the vehicle to send an alarm message corresponding to the currently assessed risk level to the rear vehicle and / or the driver of the vehicle, thereby facilitating the rear vehicle and / or the driver of the vehicle to respond to different levels of rear-end collision risks in a targeted manner.

[0045] For example, assuming that the risk levels include no risk, low collision risk, medium collision risk and high collision risk, the preset level is no risk, and the following information of the rear vehicle includes the following distance S of the rear vehicle and the following distance reduction speed a (the embodiment of the present invention can use the on-board rear-detection radar to collect the following distance S of the rear vehicle, and then obtain the following distance reduction speed a after processing by the on-board controller algorithm; the on-board rear-detection radar includes an ultrasonic radar and a millimeter-wave radar; an ultrasonic radar is a radar that uses the ultrasonic principle to detect short-range obstacles; a millimeter-wave radar is a radar that uses electromagnetic waves with a wavelength at the millimeter level to measure the distance, angle and speed of long-range obstacles), the alarm information output method is to display the alarm information to the rear vehicle through the LED flexible display screen on the rear windshield of the vehicle, and the alarm information corresponding to different risk levels is displayed by imitating facial expression changes and corresponding prompts. At this time, the corresponding vehicle control method is, for example Figure 2 As shown, including:

[0046] Step S11: Obtain the road condition information in front of the vehicle, the following distance S of the rear vehicle and the following distance reduction speed a, and then proceed to step S12.

[0047] Step S12: Adaptively adjust the first preset value S1, the second preset value S2 and the third preset value a1 according to the road condition information in front of the vehicle, and then enter step S13.

[0048] Step S13: Compare the following distance S of the rear vehicle with the first preset value S1 and the second preset value S2, and compare the following distance reduction speed a with the third preset value a1; a1≥0, S1>S2>0; for example, when the vehicle is traveling on an ordinary road, S1=10m, S2=5m, a1=0m / s 2 ;

[0049] If S≥S1, it means that the distance between the vehicles is far at this time, and the process goes to step S14; if S2<S<S1 and a≤a1, it means that the distance between the vehicles is close at this time, the speed of the rear vehicle is relatively stable, and the distance between the vehicles remains stable, and the process goes to step S15; if S2<S<S1 and a>a1, it means that the distance between the vehicles is close at this time, the rear vehicle is still accelerating, and the distance between the vehicles is continuously and rapidly reduced, and the process goes to step S16; if S<S2 and a≤a1, it means that the distance between the vehicles is very close at this time, the speed of the rear vehicle is stable, and the distance between the vehicles remains stable, and the process still goes to step S16; if S<S2 and a>a1, it means that the distance between the vehicles is very close at this time, the rear vehicle is still accelerating, and the distance between the vehicles is continuously and rapidly reduced, and the process goes to step S17;

[0050] Step S14: Determine that the risk level of the vehicle being rear-ended is no risk, control the rear windshield LED flexible display screen to display a smiling face expression pattern, and display a prompt message of "safe distance between vehicles", such as Figure 3a As shown, the process then returns to step S11.

[0051] Step S15: Determine that the risk level of the vehicle being rear-ended is low, control the rear windshield LED flexible display screen to display a frowning face serious expression pattern, and display a prompt message "Level 3 warning, please keep a safe distance", such as Figure 3b As shown, the process then returns to step S11.

[0052] Step S16: Determine that the risk level of the vehicle being rear-ended is at a medium collision risk, control the rear windshield LED flexible display screen to display a crying face expression pattern, and display a prompt message of "Level 2 warning, please keep a safe distance", such as Figure 3c As shown, the process then returns to step S11.

[0053] Step S17: Determine that the risk level of the vehicle being rear-ended is at a high risk of collision, control the rear windshield LED flexible display screen to display a crying face expression pattern, and display a prompt message of "Level 1 warning, please keep a safe distance", such as Figure 3d As shown, the process then returns to step S11.

[0054] In a complex and changing traffic environment, the use of fixed risk level assessment standards may result in delayed warning of rear-end collision risks. For example, different risk level assessment standards should be used on expressways and ordinary roads (still based on Figure 2 For example, if the vehicle enters the highway, the S1, S2 and a1 parameters should be adjusted appropriately). Or, when the traffic light in front of the vehicle is about to turn red or a pedestrian suddenly crosses the road in front of the vehicle, the vehicle needs to brake suddenly, and the risk level needs to be upgraded (still based on Figure 2 Taking the example shown as an example, when a pedestrian suddenly crosses the road illegally in front of the vehicle, the parameters S1, S2 and a1 should be adjusted appropriately).

[0055] Optionally, based on any of the above disclosed embodiments, the vehicle can use high-precision electronic maps, vehicle networking technology and vehicle-mounted forward radar detection technology to obtain road condition information in front of the vehicle. The vehicle is connected to the network through vehicle networking technology to obtain high-precision electronic map information, such as Figure 4 The road condition information in front of the vehicle may include obtaining the technical grade of the road in front of the vehicle (whether it is a highway or ordinary road), traffic light information in front of the vehicle, obstacles in front of the vehicle (including dynamic and static obstacles, dynamic obstacles such as pedestrians or animals, etc.). At the same time, the vehicle can use the on-board rear-view radar detection technology to obtain the following vehicle information of the rear vehicle, see Figure 4 .

[0056] As an important support for the maturity of unmanned driving, high-precision electronic maps play an important role in precise lateral / longitudinal positioning, collision avoidance based on lane models, obstacle detection and avoidance, intelligent speed regulation, steering and guidance, etc., and are one of the core technologies of unmanned driving. The Internet of Vehicles is a network connection platform between vehicles and people, vehicles, roads, cloud platforms, environments, and services built using modern communication technology. High-precision electronic maps, Internet of Vehicles technology, vehicle-mounted front-viewing radars, and vehicle-mounted rear-viewing radars are all existing resources on vehicles. The embodiments of the present invention reuse existing resources on vehicles to effectively prevent vehicle rear-end collisions while ensuring low costs.

[0057] In addition, the embodiment of the present invention also discloses a vehicle-mounted controller, such as Figure 5 As shown, it includes: a processor and a memory, wherein a computer program is stored on the processor, and when the computer program is executed by the processor, any vehicle control method disclosed above is implemented.

[0058] In addition, an embodiment of the present invention further discloses a vehicle, including: any vehicle-mounted controller disclosed above.

[0059] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the vehicle controller and vehicle disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0060] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish between similar and different objects, and are not necessarily used to describe a specific order or sequence. Moreover, the terms "comprises", "comprising", or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity, or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity, or device. In the absence of further restrictions, the elements defined by the sentence "comprising a" do not exclude the existence of other identical elements in the process, method, commodity, or device including the elements.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present invention. Therefore, the embodiments of the present invention will not be limited to the embodiments shown herein, but rather to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle control method, characterized in that: include: Obtain the road condition information in front of the vehicle and the following vehicle information behind; Adaptively adjusting the risk level assessment criteria of the vehicle being rear-ended according to the road condition information in front of the vehicle, and then assessing the risk level of the vehicle being rear-ended according to the following vehicle information of the rear vehicle and the risk level assessment criteria; When the assessed risk level reaches or exceeds a preset level, the vehicle is controlled to send an alarm message to the rear vehicle and / or the driver of the vehicle.

2. The vehicle control method according to claim 1, characterized in that: The controlling the vehicle to send warning information to the rear vehicle and / or the driver of the vehicle includes: controlling the vehicle to send warning information corresponding to the currently assessed risk level to the rear vehicle and / or the driver of the vehicle.

3. The vehicle control method according to claim 1 or 2, characterized in that: Controlling the vehicle to send an alarm message to the vehicle behind includes: controlling the rear lights of the vehicle and / or the rear windshield display screen to display the alarm message.

4. The vehicle control method according to claim 1 or 2, characterized in that: Controlling the vehicle to send an alarm message to the driver of the vehicle includes: controlling the vehicle to display the alarm message on the instrument panel and / or the central control screen, accompanied by a sound alarm.

5. The vehicle control method according to claim 1 or 2, characterized in that: The following vehicle information of the rear vehicle includes the following distance S of the rear vehicle and the following distance reduction speed a; the risk level includes no risk, low collision risk, medium collision risk and high collision risk; The step of evaluating the risk level of the vehicle being rear-ended based on the following vehicle information of the rear vehicle and the risk level evaluation standard includes: Compare the following distance S of the rear vehicle with the first preset value S1 and the second preset value S2, and compare the following distance reduction speed a with the third preset value a1; a1≥0, S1>S2>0; If S≥S1, the risk level of the vehicle being rear-ended is determined to be no risk; If S2<S<S1 and a≤a1, the risk level of rear-end collision of the vehicle is determined to be low collision risk; If S2<S<S1 and a>a1, the risk level of rear-end collision of the vehicle is determined to be medium collision risk; If S<S2 and a≤a1, the risk level of rear-end collision of the vehicle is determined to be medium collision risk; If S<S2 and a>a1, the risk level of the vehicle being rear-ended is determined to be a high collision risk.

6. The vehicle control method according to claim 1 or 2, characterized in that: Obtain the road condition information ahead of the vehicle, including: Use high-precision electronic maps, vehicle networking technology and on-board forward radar detection technology to obtain road condition information in front of the vehicle.

7. The vehicle control method according to claim 6, characterized in that: The road condition information in front of the vehicle includes: the technical grade of the road in front of the vehicle, the traffic light information in front of the vehicle, and the obstacle information in front of the vehicle.

8. The vehicle control method according to claim 1 or 2, characterized in that: Obtaining the following vehicle information of the rear vehicle, including: utilizing the vehicle-mounted rear-view radar detection technology to obtain the following vehicle information of the rear vehicle.

9. A vehicle-mounted controller, characterized in that: include: A processor and a memory, wherein a computer program is stored on the processor, and when the computer program is executed by the processor, the vehicle control method according to any one of claims 1 to 5 is implemented.

10. A vehicle, characterized in that: include: The vehicle-mounted controller as claimed in claim 9.

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