Vehicle collision avoidance apparatus, method, vehicle, electronic device, and medium

Abstract

This invention provides a vehicle collision avoidance device, method, vehicle, electronic device, and medium. The vehicle collision avoidance method includes: acquiring relative speed and distance; establishing a function relating relative speed to time, and determining the derivative of the function at the current moment as the relative acceleration between the vehicle and the following vehicle; determining the vehicle's collision risk level based on the relative speed and relative acceleration; and controlling the airbag to deploy and the drive device to switch the support structure to the deployed state when the collision risk level is greater than or equal to a first threshold and the distance is less than or equal to a second threshold. This invention can automatically detect the collision risk between the vehicle and the following vehicle, and automatically deploy the airbag and support structure when the collision risk is high, thus providing a buffering effect, reducing the impact on the driver of the following vehicle, and ensuring driver safety.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a vehicle collision avoidance device, method, vehicle, electronic device, and medium. Background Technology

[0002] Rear-end collisions are frequent on the road, with the most serious being collisions between small cars and vehicles with higher ground clearance, often causing significant injuries. Because small cars travel at higher speeds and the vehicles in front have higher ground clearance, the front of the small car can easily go under the vehicle in front after a rear-end collision, colliding with the small car's windshield. This makes the small car driver extremely vulnerable to head and chest injuries, seriously threatening their life.

[0003] In related technologies, anti-intrusion devices are commonly installed at the rear of high-chassis vehicles to reduce damage to small vehicles. However, current anti-intrusion devices are basically rigid structures. If the rigidity is too weak, they cannot effectively prevent intrusion. If the rigidity is too high, they cannot effectively mitigate the impact of a collision, causing serious damage to small vehicles. Summary of the Invention

[0004] This invention provides a vehicle collision avoidance device, method, vehicle, electronic device, and medium that can automatically detect the collision risk between the vehicle and the vehicle behind it, and automatically deploy airbags and expand the support structure when the collision risk is high, which can play a buffering role, reduce the impact on the driver of the vehicle behind, and ensure the driver's safety.

[0005] According to a first aspect of the present invention, a vehicle collision avoidance device is applied to a vehicle and includes: an airbag disposed at the rear of the vehicle; a drive device disposed under the vehicle; a sensing module disposed at the rear of the vehicle, the sensing module being used to detect the relative speed between the vehicle and a vehicle behind it and the distance between the vehicle and the vehicle behind it; and a support structure including a connecting rod and a support plate, one end of the connecting rod being rotatably connected to the support plate and the other end being connected to the drive device, the support structure having a retracted state and an deployed state, the drive device being used to drive the connecting rod to rotate about the end opposite to the support plate, so that the support structure switches between the deployed state and the retracted state, in the retracted state the airbag is in a closed state and the support plate abuts against the underside of the vehicle, and in the deployed state the airbag is in an open state and the support plate abuts against the airbag.

[0006] The vehicle collision avoidance device according to embodiments of the present invention has at least the following beneficial effects:

[0007] Based on the relative speed and distance detected by the sensor module, it can be determined that a vehicle behind is about to collide with this vehicle. At this time, the airbag is deployed to provide timely cushioning, reducing the impact on the driver of the vehicle behind and ensuring the driver's safety. The airbag has a flexible structure, which has a good cushioning effect. At the same time, a support structure is used to support the airbag, which makes the airbag more rigid and can effectively mitigate the collision impact. In addition, the collision avoidance method provided by this invention is relatively accurate, which can reduce the occurrence of accidental airbag deployment. When the vehicle is in a normal driving state, the support structure is in a retracted state, occupying less space.

[0008] According to a second aspect of the present invention, a vehicle collision avoidance method is applied to a vehicle, the vehicle including a vehicle collision avoidance device according to a first aspect of the present invention.

[0009] The vehicle collision avoidance method includes:

[0010] Obtain the relative speed and the vehicle distance;

[0011] Establish the relationship function between the relative speed and time, and determine the derivative of the relationship function at the current moment as the relative acceleration between the vehicle and the vehicle behind it;

[0012] The collision risk level of the vehicle is determined based on the relative velocity and the relative acceleration;

[0013] When the collision risk level is greater than or equal to the first threshold and the distance between vehicles is less than or equal to the second threshold, the airbag is controlled to deploy, and the drive device is controlled to switch the support structure to the deployed state.

[0014] The vehicle collision avoidance method according to embodiments of the present invention has at least the following beneficial effects:

[0015] This invention can automatically detect the collision risk between the vehicle and the vehicle behind it, and automatically deploy airbags according to the collision risk to achieve protection. Specifically, this invention calculates the relative acceleration between the vehicle and the vehicle behind it based on the obtained relative speed, and determines the collision risk level based on the relative speed and relative acceleration. When the collision risk level is greater than or equal to a first threshold and the distance between the vehicle and the vehicle behind it is greater than or equal to a second threshold, it can be determined that the vehicle behind is about to collide with the vehicle. At this time, the airbag is controlled to deploy, allowing the airbag to deploy before the vehicle behind it hits the vehicle, which can play a timely buffering role, reduce the impact on the driver of the vehicle behind, and ensure the driver's safety. The airbag has a flexible structure, which has a good buffering effect. At the same time, a supporting structure is used to support the airbag, which makes the airbag more rigid and can effectively mitigate the collision impact. In addition, the collision avoidance method provided by this invention is relatively accurate, which can reduce the occurrence of accidental airbag deployment. When the vehicle is in a normal driving state, the supporting structure is in a retracted state, occupying less space.

[0016] According to some embodiments of the present invention, determining the collision risk level based on the relative velocity and the relative acceleration includes:

[0017] When the relative velocity is greater than or equal to the third threshold and the relative acceleration is greater than or equal to the fourth threshold, the collision risk level is determined to be greater than or equal to the first threshold.

[0018] According to some embodiments of the present invention, determining the collision risk level based on the relative velocity and the relative acceleration includes:

[0019] When the relative velocity is less than a third threshold and the relative acceleration is less than a fourth threshold, the collision risk level is determined to be less than a first threshold and greater than or equal to a fifth threshold, wherein the fifth threshold is less than the first threshold.

[0020] The vehicle collision avoidance method also includes:

[0021] When the collision risk level is less than the first threshold and greater than or equal to the fifth threshold, the vehicle is controlled to issue an alarm signal.

[0022] According to some embodiments of the present invention, the vehicle collision avoidance device includes an alarm, and controlling the vehicle to issue an alarm signal includes:

[0023] Control the vehicle's taillights to flash and control the alarm to sound.

[0024] According to some embodiments of the present invention, after determining that the collision risk level is greater than or equal to a first threshold and the vehicle distance is less than or equal to a second threshold, the method further includes:

[0025] The vehicle's condition data is collected and uploaded to the cloud server.

[0026] A vehicle according to a third aspect embodiment of the present invention includes a vehicle collision avoidance device according to a first aspect embodiment.

[0027] The vehicle according to the embodiments of the present invention, since it includes the vehicle anti-collision device of the first aspect embodiment, has at least the above-mentioned beneficial effects, which will not be repeated here.

[0028] An electronic device according to a fourth aspect of the present invention includes: at least one processor; at least one memory for storing at least one program; and when the at least one program is executed by the at least one processor, the at least one processor implements the vehicle collision avoidance method as described in the second aspect of the present invention.

[0029] The electronic device according to the embodiments of the present invention has at least the above-described beneficial effects since its processor implements the vehicle collision avoidance method of the above embodiments, and will not be repeated here.

[0030] A computer-readable storage medium according to a fifth aspect of the present invention stores processor-executable instructions, which, when executed by a processor, are used to perform the vehicle collision avoidance method of the second aspect of the present invention.

[0031] A computer program product according to a sixth aspect of the present invention includes a computer program that, when executed by a processor, implements the vehicle collision avoidance method of the second aspect of the present invention.

[0032] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0034] Figure 1 This is a schematic diagram of a vehicle collision avoidance device module of the present invention when the airbag is in the deactivated state;

[0035] Figure 2 This is a schematic diagram of a vehicle collision avoidance device module of the present invention when the airbag is in the deactivated state;

[0036] Figure 3 This is a schematic diagram of a vehicle collision avoidance device module of the present invention when the airbag is in the deployed state;

[0037] Figure 4 This is a schematic diagram of a vehicle collision avoidance device module of the present invention when the airbag is in the deployed state;

[0038] Figure 5 This is a schematic diagram of the structure of a vehicle collision avoidance device when the airbag is in the deactivated state according to the present invention.

[0039] Figure 6 This is a schematic diagram of the structure of a vehicle collision avoidance device when the airbag is in the deployed state according to the present invention.

[0040] Figure 7 This is a flowchart illustrating the steps of a vehicle collision avoidance method according to some embodiments of the present invention;

[0041] Figure 8 This is a flowchart illustrating the steps of a vehicle collision avoidance method according to some embodiments of the present invention;

[0042] Figure 9 This is a flowchart illustrating the steps of a vehicle collision avoidance method according to some embodiments of the present invention;

[0043] Figure 10This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application.

[0044] Figure label:

[0045] 1000 vehicles;

[0046] Vehicle anti-collision device 100, airbag 110, support structure 120, linkage 121, support plate 122, drive device 130, camera 140, radar 150, alarm 160;

[0047] Taillights 200. Detailed Implementation

[0048] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0049] Reference Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a vehicle collision avoidance device 100. The vehicle collision avoidance device 100 includes an airbag 110, a drive unit 130, and a support structure 120. The airbag 110 is located at the rear of the vehicle 1000, the drive unit 130 is located under the vehicle 1000, and the support structure 120 is also located under the vehicle 1000. (Refer to...) Figure 5 As shown, the support structure 120 includes a connecting rod 121 and a support plate 122. One end of the connecting rod 121 is rotatably connected to the support plate 122, and the support plate 122 can rotate freely relative to the connecting rod 121. The rotation axis of the connecting rod 121 is parallel to the rotation axis of the support plate 122. The other end is connected to a driving device 130. The support structure 120 has a retracted state and an extended state. The driving device 130 is used to drive the connecting rod 121 to rotate about the end opposite to the support plate 122, so that the support structure 120 switches between the extended state and the retracted state. (Refer to...) Figure 1 and Figure 5 As shown, the support structure 120 is in a retracted state, the airbag 110 is in a closed state, and the top wall of the support plate 122 is in contact with the bottom of the vehicle 1000. (Refer to...) Figure 3 and Figure 6 As shown, the support structure 120 is in the deployed state, the airbag 110 is in the open state, and the support plate 122 abuts against the airbag 110, providing support for the airbag 110 and enhancing its structural strength. The specific dimensions of the airbag 110 after deployment can be calibrated to help design and improve its dimensions.

[0050] In the operation of the vehicle collision avoidance device 100, firstly, as shown in the figure, in the initial state, the support structure 120 is in a retracted state, the connecting rod 121 is in a horizontal state, and the support plate 122 is also in a horizontal state due to the force of the connecting rod 121. The support plate 122 is pressed against the bottom of the vehicle 1000, which can reduce the space occupied. When there is a greater risk of collision, the airbag 110 is deployed. The airbag 110 is in the deployed state, and the drive device 130 drives the connecting rod 121, causing the support structure 120 to switch to the deployed state. At this time, because the airbag 110 is inflated, the volume of the airbag 110 increases, and part of the structure of the airbag 110 extends downward to the ground. The support plate 122 abuts against the lower end of the airbag 110, providing support for the airbag 110. The support plate 122 can mitigate the impact force of the rear vehicle 1000 entering the rear of the vehicle, reducing the impact force on the driver.

[0051] In some embodiments, the drive device 130 is configured as a motor, and the motor shaft of the drive device 130 is fixedly connected to the connecting rod 121.

[0052] In some embodiments, the vehicle collision avoidance device further includes a sensing module located at the rear of the vehicle. The sensing module can identify objects behind the vehicle and obtain the driving status of following vehicles. For example, the sensing module can be configured as a speed sensor to detect the relative speed of following vehicles relative to the vehicle itself. Relative speed refers to the difference between the speed of the following vehicle and the speed of the vehicle itself. When the relative speed is greater than zero, it indicates that the speed of the following vehicle is greater than the speed of the vehicle itself, and the following vehicle is gradually approaching the vehicle; when the relative speed is less than zero, it indicates that the speed of the following vehicle is less than the speed of the vehicle itself, and the following vehicle is gradually moving away from the vehicle. The sensing module can also be configured as a distance sensor to detect the distance between the vehicle and following vehicles. Specifically, refer to... Figure 1 and Figure 2 As shown, the sensing module may include a camera 140 or a radar 150, which measures the relative speed and distance mentioned above through image recognition technology, or through laser technology.

[0053] Reference Figure 7 The diagram shows the steps of a vehicle collision avoidance device provided in an embodiment of the present invention, including steps S100, S200, S300 and S400.

[0054] Specifically, step S100: Obtain relative speed and distance between vehicles.

[0055] It should be noted that in this step, the relative speed and distance can be obtained in real time from the sensor module in the vehicle's collision avoidance device.

[0056] Step S200: Establish the relationship function of relative velocity with respect to time, and determine the derivative of the relationship function at the current moment as the relative acceleration between the vehicle and the vehicle behind.

[0057] It should be noted that in this step, relative acceleration reflects the trend of relative velocity change. When the relative acceleration is greater than zero, that is, the acceleration of the vehicle behind is greater than the acceleration of this vehicle, it means that the speed increase rate of the vehicle behind is greater than the speed increase rate of this vehicle, and the vehicle behind will get closer and closer to this vehicle. When the relative acceleration is less than zero, that is, the acceleration of the vehicle behind is less than the acceleration of this vehicle, it means that the speed increase rate of the vehicle behind is less than the speed increase rate of this vehicle, and the vehicle behind will get further and further away from this vehicle.

[0058] Step S300: Determine the collision risk level of the vehicle based on relative speed and relative acceleration.

[0059] It should be noted that in this step, judging whether a vehicle behind is getting closer to the vehicle based on both relative speed and relative acceleration can make the judgment more accurate. Collision risk can be divided into multiple levels, each corresponding to a collision avoidance strategy. The collision risk level indicates the risk of a collision between the vehicle behind and the vehicle. The higher the level, the higher the collision risk. Each collision risk level can be assigned a numerical value, which can be used to quantify the degree of risk for that level.

[0060] In some embodiments, the collision risk level can be determined based on whether the relative speed is greater than a certain threshold and whether the relative acceleration is greater than a certain threshold. Each collision risk level corresponds to a threshold for relative speed and a threshold for relative acceleration.

[0061] Step S400: When the collision risk level is greater than or equal to the first threshold and the distance between the vehicles is less than or equal to the second threshold, control the airbag to deploy and control the drive device to switch the support structure to the deployment state.

[0062] It should be noted that in this step, when the collision risk level is greater than or equal to the first threshold, it means that the relative speed and relative acceleration values ​​are high. Furthermore, when the distance between vehicles is less than or equal to the second threshold, it means that the vehicle behind is relatively close to the vehicle. At this time, the vehicle behind is very likely to collide with the vehicle, and the collision risk level is high. At this time, the airbag can be deployed. After the airbag is inflated, its volume increases, and the airbag can play a protective role. At the same time, the control drive device switches the support structure from the retracted state to the deployed state, so that the support plate supports the airbag and plays a supporting role, ensuring that the airbag has a good protective effect.

[0063] In this embodiment, the collision risk between the vehicle and the vehicle behind can be automatically detected, and the airbags can be automatically deployed according to the collision risk to achieve protection. Specifically, this embodiment calculates the relative acceleration between the vehicle and the vehicle behind based on the obtained relative speed, and determines the collision risk level based on the relative speed and relative acceleration. When the collision risk level is greater than or equal to a first threshold and the distance between the vehicle and the vehicle behind is greater than or equal to a second threshold, it can be determined that the vehicle behind is about to collide with the vehicle. At this time, the airbag is controlled to deploy, so that the airbag can deploy before the vehicle behind collides with the vehicle, which can play a timely buffering role. Compared with the scheme of deploying the airbag after the vehicle behind collides with the vehicle, this embodiment can reduce the impact on the driver of the vehicle behind, and ensure the safety of the driver. The airbag is a flexible structure with good buffering effect. At the same time, a support structure is used to support the airbag, so that the airbag has good rigidity and can effectively mitigate the collision impact. In addition, the collision avoidance method provided by this invention is more accurate and can reduce the occurrence of accidental deployment of airbags. Under normal driving conditions, the support structure is in a retracted state, occupying less space.

[0064] Reference Figure 8 As shown, in some embodiments, step S300 specifically includes step S310.

[0065] Step S310: When the relative velocity is greater than or equal to the third threshold and the relative acceleration is greater than or equal to the fourth threshold, the collision risk level is determined to be greater than or equal to the first threshold.

[0066] It should be noted that in this step, when the relative velocity is greater than or equal to the third threshold, it indicates a relatively high relative velocity; when the relative acceleration is greater than or equal to the fourth threshold, it indicates a relatively high relative acceleration. In this case, the risk of collision is relatively high. In some embodiments, the third and fourth thresholds can be set to zero or values ​​greater than zero.

[0067] Understandably, the actual collision risk varies depending on the relative speed and relative acceleration at different distances. For example, when the distance is extremely large, even if the relative speed and relative acceleration are high, a collision may not actually occur because the following vehicle can brake in time to avoid a rear-end collision when the distance is large enough. Therefore, the safe distance corresponding to each set of relative speed and relative acceleration is different.

[0068] Based on this, in some embodiments, a binary tuple (v, a) is preferably established, where v is the relative velocity and a is the relative acceleration. A function F can be established to relate the binary tuple (v, a) to the safe distance d: (v, a) → d, meaning one binary tuple (v, a) corresponds to one safe distance d. For example, when the relative velocity is v0 and the relative acceleration is a0, inputting a set of (v0, a0) into the function F yields the corresponding safe distance d0. In this case, if the actual distance obtained from the sensing module is less than d0, it indicates a low collision risk; if the actual distance is greater than d0, it indicates a high collision risk. It should be noted that the function F is a preset function parameter, generally stored in memory, and can be obtained through extensive simulation tests. Before step S400, the obtained relative speed and relative acceleration can be substituted into the function F mentioned above to obtain the corresponding safe following distance. This safe following distance is the corresponding second threshold, meaning that the second threshold is variable, not fixed. It is necessary to first obtain the relative speed and relative acceleration between the current vehicle and the vehicle behind, and then determine the value of the second threshold according to the function F. From a geometric perspective, the function F can be understood as a two-dimensional curved surface.

[0069] Based on this, step 420 is included before step S400;

[0070] Step S420: Obtain the preset relational function F, which is represented as a function of the binary tuple (v, a) with respect to d. Substitute the relative velocity and relative acceleration into the preset relational function F to obtain the second threshold.

[0071] Where v is the relative velocity, which can be in m / s², and a is the relative acceleration, which can also be in m / s². 2 d represents the safe following distance, which can be in meters (m). In this embodiment, a second threshold is obtained through a preset relationship function F. The actual following distance is then comprehensively judged based on the second threshold. If the actual following distance is less than the second threshold, it indicates a higher potential collision risk. This embodiment makes the final collision risk assessment more accurate and avoids accidental airbag deployment.

[0072] Reference Figure 8 As shown, in some embodiments, step S300 further includes step S320.

[0073] Step S320: When the relative velocity is less than the third threshold and the relative acceleration is less than the fourth threshold, the collision risk level is determined to be less than the first threshold and greater than or equal to the fifth threshold, where the fifth threshold is less than the first threshold.

[0074] Reference Figure 8 As shown, in some embodiments, the anti-collision method further includes step S500.

[0075] Step S500: When the collision risk level is less than the first threshold and greater than or equal to the fifth threshold, control the vehicle to issue an alarm signal.

[0076] It should be noted that in this step, the fifth threshold is less than the first threshold. When the collision risk level is between the first and fifth thresholds, it means that the vehicle has a collision risk, but the risk is not high. The collision risk can be eliminated in time by manual operation. At this time, by controlling the vehicle to issue an alarm signal, the driver of the following vehicle can be reminded to pay attention and slow down appropriately to avoid a rear-end collision and prevent it from happening.

[0077] Reference Figure 1 and Figure 2 As shown, in some embodiments, the vehicle collision avoidance device 100 includes an alarm 160, which can generate an alarm sound. In step S500, the vehicle is controlled to issue an alarm signal, which specifically includes step S510.

[0078] S510: Controls the vehicle's taillights to flash and controls the alarm to sound.

[0079] It should be noted that in this step, the taillights flash 200 to remind the drivers of vehicles behind, and the alarm sounds to remind the drivers of vehicles behind, so that the drivers can maintain a safe distance and avoid rear-end collisions in time.

[0080] Reference Figure 1 and Figure 2 As shown, in some embodiments, the sensing module includes a camera 140 and a radar 150, both of which are located at the rear of the vehicle. Both the camera 140 and radar 150 can be used to measure the relative speed and distance between the vehicle and vehicles behind it. The camera 140 can also be used to record the vehicle conditions behind it, and can take photos and videos. The camera 140 is positioned above the radar 150, so when the airbag deploys, the airbag will not obstruct the camera 140, allowing the camera 140 to record the complete vehicle conditions.

[0081] In step S400, based on the collision risk level being greater than or equal to a first threshold and the vehicle distance being less than or equal to a second threshold, step S410 is further included after this step.

[0082] Step S410: Collect vehicle condition data and upload it to the cloud server.

[0083] It should be noted that in this step, the vehicle's condition data can be data collected by sensor modules, such as relative speed collected by radar and images recorded by cameras. It is not limited to these; it can also be other data recorded in storage, such as geographical location, date, vehicle speed, and vehicle model. This data can be uploaded to a cloud server for storage, facilitating vehicle condition tracking in the event of a rear-end collision. Furthermore, the cloud server can be a traffic management department's cloud server. The control unit can automatically report accident information to the traffic management department and its database, saving valuable rescue time for the injured and helping to continuously update and refine the calculation methods and models.

[0084] Reference Figure 9 The flowchart shown is a process for the vehicle collision avoidance method of this embodiment. In the figure, threshold 1 is the first threshold of the above embodiment, and threshold 2 is the fifth threshold of the above embodiment.

[0085] This invention also provides a vehicle including the vehicle collision avoidance device described in the above embodiments.

[0086] Specifically, the vehicles in this embodiment of the invention can be private cars, such as sedans, SUVs, MPVs, or pickup trucks. Vehicles can also be commercial vehicles, such as vans, buses, small trucks, or large semi-trailers. Vehicles can be gasoline-powered or new energy vehicles. When a vehicle is a new energy vehicle, it can be a hybrid or a pure electric vehicle.

[0087] This invention also provides an electronic device, including at least one processor and at least one memory, the memory being used to store at least one program. When the at least one program is executed by the at least one processor, the at least one processor implements the vehicle collision avoidance method as described in the above embodiments.

[0088] Reference Figure 10 As shown, Figure 10The illustration shows the hardware structure of an electronic device according to another embodiment. The electronic device includes: a processor, which can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, for executing related programs to implement the technical solutions provided in the embodiments of this application; and a memory, which can be implemented using a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM), etc. The memory can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory and called by the processor to execute the vehicle collision avoidance method of the embodiments of this application. The input / output interface is used to realize information input and output. The communication interface is used to realize communication interaction between this device and other devices. Communication can be realized through wired means (such as USB, network cable, etc.) or through wireless means (such as mobile network, WIFI, Bluetooth, etc.). The bus transmits information between various components of the device (such as processor, memory, input / output interface and communication interface). The processor, memory, input / output interface and communication interface realize communication connection between each other within the device through the bus.

[0089] This invention also provides a computer-readable storage medium, which includes a stored program, wherein the program, when running, controls the execution of the vehicle collision avoidance method of the above embodiments in the processor of the device.

[0090] This invention also provides a computer program product, including a computer program that, when executed by a processor, implements the vehicle collision avoidance method described above.

[0091] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0092] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or the order in which the indicated technical features are presented.

[0093] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0094] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatuses.

[0095] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0096] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, apparatuses, or units, and may be electrical, mechanical, or other forms.

[0097] In the embodiments of this application, the terms "module" or "unit" refer to a computer program or part of a computer program that has a predetermined function and works with other related parts to achieve a predetermined goal, and can be implemented wholly or partially using software, hardware (such as processing circuitry or memory), or a combination thereof. Similarly, a processor (or multiple processors or memory) can be used to implement one or more modules or units. Furthermore, each module or unit can be part of an overall module or unit that includes the functionality of that module or unit.

[0098] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0099] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0100] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0101] The step numbers in the above method embodiments are set only for ease of explanation and do not impose any restrictions on the order of the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

Claims

1. A vehicle collision avoidance method, characterized in that, Applied to vehicles including a vehicle collision avoidance device, the vehicle collision avoidance device comprising: An airbag is located at the rear of the vehicle; A drive unit is located under the vehicle. A sensing module is located at the rear of the vehicle. The sensing module is used to detect the relative speed between the vehicle and the vehicle behind it, as well as the distance between the vehicle and the vehicle behind it. A support structure includes a connecting rod and a support plate. One end of the connecting rod is rotatably connected to the support plate, and the other end is connected to the drive device. The support plate rotates freely relative to the connecting rod, and the rotation axis of the connecting rod is parallel to the rotation axis of the support plate. The support structure has a retracted state and an deployed state. The drive device is used to drive the connecting rod to rotate about the end away from the support plate, so that the support structure switches between the deployed state and the retracted state. In the retracted state, the airbag is in a closed state, and the support plate abuts against the bottom of the vehicle. In the deployed state, the airbag is in an open state, and the support plate abuts against the airbag. The vehicle collision avoidance method includes: Obtain the relative speed and the vehicle distance; Establish the relationship function between the relative speed and time, and determine the derivative of the relationship function at the current moment as the relative acceleration between the vehicle and the vehicle behind it; The collision risk level of the vehicle is determined based on the relative velocity and the relative acceleration; When the collision risk level is greater than or equal to the first threshold and the distance between vehicles is less than or equal to the second threshold, the airbag is controlled to deploy, and the drive device is controlled to switch the support structure to the deployed state.

2. The vehicle collision avoidance method according to claim 1, characterized in that, The step of determining the collision risk level based on the relative velocity and the relative acceleration includes: When the relative velocity is greater than or equal to the third threshold and the relative acceleration is greater than or equal to the fourth threshold, the collision risk level is determined to be greater than or equal to the first threshold.

3. The vehicle collision avoidance method according to claim 2, characterized in that, The method of determining the collision risk level based on the relative velocity and the relative acceleration further includes: When the relative velocity is less than a third threshold and the relative acceleration is less than a fourth threshold, the collision risk level is determined to be less than a first threshold and greater than or equal to a fifth threshold, wherein the fifth threshold is less than the first threshold. The vehicle collision avoidance method also includes: When the collision risk level is less than the first threshold and greater than or equal to the fifth threshold, the vehicle is controlled to issue an alarm signal.

4. The vehicle collision avoidance method according to claim 3, characterized in that, The vehicle collision avoidance device includes an alarm, and controlling the vehicle to issue an alarm signal includes: Control the vehicle's taillights to flash and control the alarm to sound.

5. The vehicle collision avoidance method according to claim 1, characterized in that, After determining that the collision risk level is greater than or equal to a first threshold and the vehicle distance is less than or equal to a second threshold, the method further includes: The vehicle's condition data is collected and uploaded to the cloud server.

6. A vehicle, characterized in that, The vehicle collision avoidance method described in claim 1 is applied.

7. An electronic device, characterized in that, include: At least one processor; At least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the vehicle collision avoidance method as described in any one of claims 2 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the execution of the vehicle collision avoidance method according to any one of claims 2 to 5 in the processor of the device.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the vehicle collision avoidance method as described in claims 2 to 5.

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