Vehicle anti-collision device and method, vehicle, electronic equipment and medium

Abstract

The invention provides a vehicle anti-collision device and method, a vehicle, electronic equipment and a medium, and the vehicle anti-collision method comprises the steps: obtaining a relative speed and a vehicle distance; establishing a relation function of the relative speed with respect to time, and determining that the derivative of the relation function at the current moment is the relative acceleration of the vehicle and the rear vehicle; determining a collision risk level of the vehicle according to the relative speed and the relative acceleration; when the collision risk grade is larger than or equal to a first threshold value and the vehicle distance is smaller than or equal to a second threshold value, the airbag is controlled to be opened, and the driving device is controlled to drive the supporting structure to be switched to the unfolded state. The collision risk of the vehicle and the rear vehicle can be automatically detected, the air bag is automatically opened and the supporting structure is unfolded when the collision risk is large, the buffering effect can be achieved, impact on a driver of the rear vehicle is reduced, and the safety of the driver is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle anti-collision device, method, vehicle, electronic equipment and medium. Background Art

[0002] At present, vehicles frequently rear-end collisions when driving on the road, and the most serious one is when a small car rear-ends a vehicle with a higher chassis, which often causes great harm to the human body. Since small cars travel at a higher speed and the chassis height of the vehicle in front is higher, the front of the small car is very likely to drill into the bottom of the vehicle in front after rear-ending, and just collide with the front windshield of the small car, causing the head and chest of the driver of the small car to be easily hit, seriously threatening life safety.

[0003] In the related art, an anti-intrusion device is generally installed at the rear of a high-chassis vehicle to reduce damage to small vehicles. However, the current anti-intrusion device is basically a rigid structure. If the rigidity is weak, it cannot effectively prevent intrusion. If the rigidity is large, it cannot effectively mitigate the impact of the collision, causing serious damage to the small vehicle. Summary of the invention

[0004] The present invention provides a vehicle anti-collision device, method, vehicle, electronic equipment and medium, which can automatically detect the collision risk between the vehicle and the rear vehicle, and automatically open the airbag and deploy the support structure when the collision risk is large, which can play a buffering role, reduce the impact on the driver of the rear vehicle, and ensure the driver's safety.

[0005] The vehicle anti-collision device according to the first aspect of the present invention is applied to a vehicle and includes: an airbag, which is arranged at the rear of the vehicle; a driving device, which is arranged at the bottom of the vehicle; a sensor module, which is arranged at the rear of the vehicle, and the sensor module is used to detect the relative speed between the vehicle and the rear vehicle and the distance between the vehicle and the rear vehicle; a supporting structure, including a connecting rod and a supporting plate, one end of the connecting rod is rotatably connected to the support plate, and the other end is connected to the driving device, the supporting structure has a stowed state and a deployed state, the driving device is used to drive the connecting rod to rotate around one end away from the support plate so that the supporting structure switches between the deployed state and the stowed state, in the stowed state, the airbag is in a closed state, and the support plate abuts against the bottom 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 anti-collision device according to the embodiment of the present invention has at least the following beneficial effects: According to the relative speed and vehicle distance detected by the sensor module, it can be determined that the rear vehicle is about to hit the vehicle. At this time, the airbag is controlled to open, which can play a buffering role in time, reduce the impact on the driver of the rear vehicle, and ensure the driver's safety. The airbag is a flexible structure with a good buffering effect. At the same time, a supporting structure is used to support the airbag, so that the rigidity of the airbag is better, which can effectively alleviate the collision impact. In addition, the anti-collision method provided by the present invention is more accurate, which can reduce the occurrence of the airbag being accidentally opened. When the vehicle is in normal driving state, the supporting structure is in a storage state and occupies less space.

[0007] The vehicle anti-collision method according to the second embodiment of the present invention is applied to a vehicle, wherein the vehicle comprises the vehicle anti-collision device according to the first embodiment; The vehicle collision avoidance method comprises: Acquiring the relative speed and the vehicle distance; Establishing a relationship function between the relative speed and time, and determining the derivative of the relationship function at the current moment as the relative acceleration between the vehicle and the rear vehicle; determining a collision risk level of the vehicle according to the relative speed and the relative acceleration; When 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 airbag is controlled to be deployed, and the driving device is controlled to drive the support structure to switch to the deployed state.

[0008] The vehicle collision avoidance method according to the embodiment of the present invention has at least the following beneficial effects: The present invention can automatically detect the risk of collision between the vehicle and the rear vehicle, and automatically deploy the airbag according to the collision risk to achieve protection. Specifically, the present invention calculates the relative acceleration between the vehicle and the rear vehicle according to the acquired relative speed between the vehicle and the rear vehicle, and determines the collision risk level according to the relative speed and the relative acceleration. When the collision risk level is greater than or equal to a first threshold and the distance between the vehicle and the rear vehicle is greater than or equal to a second threshold, it can be determined that the rear vehicle is about to hit the vehicle. At this time, the airbag is controlled to be deployed. The airbag is deployed before the rear vehicle hits the vehicle, which can play a buffering role in time, reduce the impact on the driver of the rear vehicle, and ensure the driver's safety. The airbag is a flexible structure with good buffering effect. At the same time, the airbag is supported by a supporting structure, so that the rigidity of the airbag is better, which can effectively alleviate the collision impact. In addition, the anti-collision method provided by the present invention is more accurate, which can reduce the occurrence of the airbag being mistakenly deployed. When the vehicle is in a normal driving state, the supporting structure is in a storage state and occupies less space.

[0009] According to some embodiments of the present invention, determining the collision risk level according to the relative speed and the relative acceleration includes: When the relative speed is greater than or equal to a third threshold and the relative acceleration is greater than or equal to a fourth threshold, it is determined that the collision risk level is greater than or equal to a first threshold.

[0010] According to some embodiments of the present invention, determining the collision risk level according to the relative speed and the relative acceleration includes: When the relative speed is less than a third threshold and the relative acceleration is less than a fourth threshold, it is determined that the collision risk level is less than the first threshold and greater than or equal to a fifth threshold, and the fifth threshold is less than the first threshold; The vehicle collision avoidance method further comprises: 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 send out an alarm signal.

[0011] According to some embodiments of the present invention, the vehicle anti-collision device includes an alarm, and controlling the vehicle to send an alarm signal includes: Control the rear taillight of the vehicle to flash and control the siren to sound an alarm.

[0012] According to some embodiments of the present invention, after 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 condition data of the vehicle is collected and uploaded to the cloud server.

[0013] A vehicle according to an embodiment of the third aspect of the present invention comprises the vehicle anti-collision device according to the embodiment of the first aspect.

[0014] The vehicle according to the embodiment of the present invention comprises the vehicle anti-collision device of the first aspect embodiment and therefore has at least the above-mentioned beneficial effects, which will not be described in detail here.

[0015] According to an embodiment of the fourth aspect of the present invention, the electronic device includes: 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 the embodiment of the second aspect.

[0016] The electronic device according to the embodiment of the present invention has at least the above-mentioned beneficial effects, as its processor implements the vehicle collision avoidance method of the above-mentioned embodiment, which will not be described in detail here.

[0017] According to the computer-readable storage medium of the fifth aspect embodiment of the present invention, processor-executable instructions are stored therein, and the processor-executable instructions are used to execute the vehicle collision avoidance method of the second aspect embodiment when executed by the processor.

[0018] The computer program product according to the sixth aspect of the present invention comprises a computer program, and when the computer program is executed by a processor, the vehicle collision avoidance method according to the second aspect is implemented.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 A schematic diagram of a module of a vehicle anti-collision device when the airbag is in a closed state according to some embodiments of the present invention; Figure 2 A schematic diagram of a module of a vehicle anti-collision device when the airbag is in a closed state according to some embodiments of the present invention; Figure 3 A schematic diagram of a module of a vehicle anti-collision device when the airbag is in an open state according to some embodiments of the present invention; Figure 4 A schematic diagram of a module of a vehicle anti-collision device when the airbag is in an open state according to some embodiments of the present invention; Figure 5 It is a structural schematic diagram of a vehicle anti-collision device according to the present invention when the airbag is in a closed state; Figure 6 It is a structural schematic diagram of a vehicle anti-collision device of the present invention when the airbag is in an open state; Figure 7 A flowchart of the steps of a vehicle collision avoidance method according to some embodiments of the present invention; Figure 8 A flowchart of the steps of a vehicle collision avoidance method according to some embodiments of the present invention; Fig. 9 A flowchart of the steps of a vehicle collision avoidance method according to some embodiments of the present invention; Fig.10 It is a schematic diagram of the hardware structure of the electronic device provided in the embodiment of the present application.

[0021] Reference numerals: Vehicles 1000; Vehicle anti-collision device 100, airbag 110, support structure 120, connecting rod 121, support plate 122, driving device 130, camera 140, radar 150, alarm 160; Rear taillight 200. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] Reference Figure 1 and Figure 2 As shown, a vehicle anti-collision device 100 provided by an embodiment of the present invention comprises an airbag 110, a driving device 130 and a supporting structure 120. The airbag 110 is arranged at the rear of the vehicle 1000, the driving device 130 is arranged at the bottom of the vehicle 1000, and the supporting structure 120 is also arranged at the bottom of the vehicle 1000. 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. 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 the driving device 130. The support structure 120 has a storage state and an expanded state. The driving device 130 is used to drive the connecting rod 121 to rotate around one end away from the support plate 122, so that the support structure 120 switches between the expanded state and the storage state. Figure 1 and Figure 5 As shown, the support structure 120 is in the stowed state, the airbag 110 is in the closed state, and the top wall of the support plate 122 abuts against the bottom of the vehicle 1000. Figure 3 and Figure 6 As shown, the support structure 120 is in the deployed state, the airbag 110 is in the open state, the support plate 122 is in contact with the airbag 110, and the support plate 122 supports the airbag 110, thereby enhancing the structural strength of the airbag 110. The specific size of the airbag 110 after deployment can be calibrated to help design and improve the size of the airbag 110.

[0024] In the process of the vehicle anti-collision device 100 working, first, as shown in the figure, in the initial state, the support structure 120 is in the storage state, the connecting rod 121 is in the horizontal state, and the support plate 122 is also in the horizontal state under the force of the connecting rod 121. The support plate 122 is pressed against the bottom of the vehicle 1000, which can reduce the occupied space. When there is a greater risk of collision, the airbag 110 is opened, the airbag 110 is in the open state, and the driving device 130 drives the connecting rod 121 state, so that the support structure 120 switches to the deployed state. At this time, since the airbag 110 is inflated, the volume of the airbag 110 becomes larger, and part of the structure of the airbag 110 extends downward to the ground. The support plate 122 abuts against the airbag 110 at the lower end position, and supports the airbag 110. The support plate 122 can alleviate the impact force of the rear vehicle 1000 drilling into the rear of the vehicle, reducing the impact force on the driver.

[0025] In some embodiments, the driving device 130 is configured as a motor, and the motor shaft of the driving device 130 is fixedly connected to the connecting rod 121 .

[0026] In some embodiments, the vehicle anti-collision device also includes a sensor module, which is disposed at the rear of the vehicle. The sensor module can identify objects behind the vehicle and can obtain the driving status of the rear vehicle through the sensor module. For example, the sensor module can be set as a speed sensor, which can detect the relative speed of the rear vehicle relative to the vehicle. The relative speed refers to the difference between the speed of the rear vehicle and the speed of the vehicle. When the relative speed is greater than zero, it means that the speed of the rear vehicle is greater than the speed of the vehicle, and the rear vehicle is gradually approaching the vehicle; when the relative speed is less than zero, it means that the speed of the rear vehicle is greater than the speed of the vehicle, and the rear vehicle is gradually moving away from the vehicle. The sensor module can also be set as a distance sensor, which can detect the distance between the vehicle and the rear vehicle. Specifically, refer to Figure 1 and Figure 2 As shown, the sensor module may include a camera 140 or a radar 150, and measure the above relative speed and vehicle distance through image recognition technology, or measure the above relative speed and vehicle distance through laser technology.

[0027] Reference Figure 7 As shown, a process flow of a vehicle anti-collision device provided by an embodiment of the present invention includes step S100, step S200, step S300 and step S400.

[0028] Specifically, step S100: obtaining relative speed and vehicle distance.

[0029] It should be noted that in this step, the real-time relative speed and vehicle distance can be obtained from the sensor module in the vehicle anti-collision device.

[0030] Step S200: Establish a relationship function of relative speed 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 rear vehicle.

[0031] It should be noted that, in this step, the relative acceleration reflects the changing trend of the relative speed. When the relative acceleration is greater than zero, that is, the acceleration of the rear vehicle is greater than the acceleration of the own vehicle, it means that the increasing rate of the rear vehicle's speed is greater than the increasing rate of the own vehicle's speed, and the rear vehicle will get closer and closer to the own vehicle; when the relative acceleration is less than zero, that is, the acceleration of the rear vehicle is less than the acceleration of the own vehicle, it means that the increasing rate of the rear vehicle's speed is less than the increasing rate of the own vehicle's speed, and the rear vehicle will get farther and farther away from the own vehicle.

[0032] Step S300: Determine the collision risk level of the vehicle according to the relative speed and the relative acceleration.

[0033] It should be noted that in this step, the relative speed and relative acceleration are used to comprehensively judge whether the rear vehicle is getting closer to the vehicle, so that the judgment result can be more accurate. The collision risk can be divided into multiple levels, each level corresponds to an anti-collision strategy, and the collision risk level indicates the collision risk between the rear vehicle and the vehicle. The higher the level, the higher the collision risk. Each collision risk level can correspond to a numerical value, so that the specific numerical value is used to quantify the risk level of the corresponding level.

[0034] In some embodiments, the collision risk level may 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, and each collision risk level corresponds to a relative speed threshold and a relative acceleration threshold.

[0035] Step S400: When the collision risk level is greater than or equal to the first threshold and the vehicle distance is less than or equal to the second threshold, the airbag is controlled to be deployed, and the driving device is controlled to drive the supporting structure to switch to the deployed state.

[0036] 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 values ​​of relative speed and relative acceleration are high, and the vehicle distance is less than or equal to the second threshold, which means that the rear vehicle is relatively close to the vehicle. At this time, the rear vehicle is likely to collide with the vehicle, and the collision risk level is high. At this time, the airbag can be opened. The volume of the airbag becomes larger after being inflated, and the airbag can play a protective role. At the same time, the control drive device switches the support structure from the storage state to the deployment state, so that the support plate supports the airbag to support the airbag and ensure that the airbag has a better protective effect.

[0037] In this embodiment, the collision risk between the vehicle and the rear vehicle can be automatically detected, and the airbag can be automatically opened according to the collision risk to achieve protection. Specifically, this embodiment calculates the relative acceleration between the vehicle and the rear vehicle according to the acquired relative speed between the vehicle and the rear vehicle, and determines the collision risk level according to the relative speed and the relative acceleration. When the collision risk level is greater than or equal to the first threshold and the distance between the vehicle and the rear vehicle is greater than or equal to the second threshold, it can be determined that the rear vehicle is about to hit the vehicle. At this time, the airbag is controlled to open, and the airbag is opened before the rear vehicle hits the vehicle, which can play a buffering role in time. Compared with the solution of opening the airbag after the rear vehicle hits the vehicle, this embodiment can better reduce the impact on the driver of the rear vehicle and ensure the safety of the driver. The airbag is a flexible structure with a good buffering effect. At the same time, the airbag is supported by a support structure, so that the rigidity of the airbag is better, which can effectively alleviate the collision impact. In addition, the anti-collision method provided by the present invention is more accurate, which can reduce the occurrence of the airbag being mistakenly opened. In the normal driving state, the support structure is in a storage state and occupies a small space.

[0038] Reference Figure 8 As shown, in some embodiments, step S300 specifically includes step S310.

[0039] Step S310: When the relative speed is greater than or equal to the third threshold and the relative acceleration is greater than or equal to the fourth threshold, it is determined that the collision risk level is greater than or equal to the first threshold.

[0040] It should be noted that in this step, when the relative speed is greater than or equal to the third threshold, it means that the relative speed is high, and when the relative acceleration is greater than or equal to the fourth threshold, it means that the relative acceleration is high, and at this time, the collision risk is greater. In some embodiments, the third threshold and the fourth threshold can be set to zero or a value greater than zero.

[0041] It is understandable that under different vehicle distances, the actual corresponding collision risks are different according to different relative speeds and relative accelerations. For example, when the vehicle distance is extremely large, even if the relative speed and relative acceleration are high, a collision may not actually occur, because when the vehicle distance is large enough, the rear vehicle can brake in time to avoid rear-end collision. Therefore, the safe vehicle distance corresponding to each set of relative speeds and relative accelerations is different.

[0042] Based on this, in some embodiments, it is preferred to establish a binary group (v, a), where v is the relative speed and a is the relative acceleration. A relationship function F of the binary group (v, a) on the safe vehicle distance d can be established: (v, a)→d, that is, one binary group (v, a) corresponds to one safe vehicle distance d. For example, when the relative speed is v0 and the relative acceleration is a0, a group (v0, a0) is input into the function F to obtain the corresponding safe vehicle distance d0. At this time, when the actual vehicle distance obtained from the sensor module is less than d0, it indicates that the collision risk is low. When the actual vehicle distance is greater than d0, it indicates that the collision risk is high. It should be noted that function F is a preset function parameter, which is generally stored in a memory. Function F can be obtained by a large number of simulation test experiments. Before step S400, the relative speed and relative acceleration obtained can be substituted into the above function F to obtain the corresponding safe vehicle distance, which is the corresponding second threshold value, that is, the second threshold value is variable, not fixed, and the relative speed and relative acceleration between the current vehicle and the rear vehicle need to be obtained first, and then the value of the second threshold value is determined according to the function F. From a geometric point of view, the function F can be understood as a two-dimensional surface.

[0043] Based on this, before step S400, step 420 is also included; Step S420: Obtain a preset relationship function F, where the preset relationship function F is represented as a function of a binary group (v, a) with respect to d, and substitute the relative speed and the relative acceleration into the preset relationship function F to obtain a second threshold value.

[0044] Where v is the relative velocity, the unit can be m / s, a is the relative acceleration, the unit can be m / s 2 , d is the safe vehicle distance, and the unit can be m. In this embodiment, the second threshold is obtained by the preset relationship function F, and then the actual vehicle distance is comprehensively judged according to the second threshold. If the actual vehicle distance is less than the second threshold, it means that the potential collision risk is relatively large. This embodiment can make the final result of judging the collision risk more accurate and avoid the accidental deployment of the airbag.

[0045] Reference Figure 8 As shown, in some embodiments, step S300 specifically also includes step S320.

[0046] Step S320: when the relative speed is less than the third threshold and the relative acceleration is less than the fourth threshold, it is determined that the collision risk level is less than the first threshold and greater than or equal to the fifth threshold, and the fifth threshold is less than the first threshold; Reference Figure 8 As shown, in some embodiments, the anti-collision method further includes step S500.

[0047] Step S500: 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 send out an alarm signal.

[0048] 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 threshold and the fifth threshold, it means that there is a collision risk for the vehicle, but the collision risk is not high, and the collision risk can be eliminated in time through human operation. At this time, by controlling the vehicle to send out an alarm signal, the driver of the rear vehicle can be reminded to pay attention and let the rear vehicle slow down appropriately to avoid rear-end collision and prevent it from happening.

[0049] Reference Figure 1 and Figure 2 As shown, in some embodiments, the vehicle anti-collision device 100 includes an alarm 160, and the alarm 160 can generate an alarm sound. In step S500, the vehicle is controlled to send out an alarm signal, and this step specifically includes step S510.

[0050] S510: Control the rear taillights of the vehicle to flash and control the siren to sound.

[0051] It should be noted that in this step, the rear taillight 200 flashes to remind the driver of the rear vehicle, and the alarm sounds to remind the driver of the rear vehicle, so that the driver can maintain a safe distance, thereby avoiding a rear-end collision in time.

[0052] Reference Figure 1 and Figure 2 As shown, in some embodiments, the sensor module includes a camera 140 and a radar 150, both of which are arranged at the rear of the vehicle. Both the camera 140 and the radar 150 can be used to measure the relative speed and distance between the vehicle and the vehicle behind. The camera 140 can also be used to record the vehicle condition of the vehicle behind. The camera 140 can take photos and videos. The camera 140 is located above the radar 150. When the airbag is deployed, the airbag will not block the camera 140, which is conducive to the camera 140 recording the complete vehicle condition.

[0053] In step S400 , according to the collision risk level being greater than or equal to the first threshold and the vehicle distance being less than or equal to the second threshold, this step further includes step S410 .

[0054] Step S410: Collect vehicle condition data and upload it to the cloud server.

[0055] It should be noted that in this step, the vehicle condition data can be data collected by the sensor module, for example, the data can be the relative speed collected by the radar and the image recorded by the camera, but it is not limited to this, and can also be other data recorded in the storage, such as the geographic location, date, vehicle speed and vehicle model, etc. These data can be uploaded to the cloud server for storage, and can be convenient for tracking the vehicle condition when a rear-end collision occurs. In addition, the cloud server can be a cloud server of the traffic control department, and the control unit can automatically report the accident information to the traffic control department and the information database, which can buy rescue time for the injured and help continuously update and improve the calculation method model.

[0056] Reference Fig. 9 As shown, it is a flow chart of the vehicle collision avoidance method of this embodiment, wherein the threshold 1 in the figure is the first threshold of the above embodiment, and the threshold 2 is the fifth threshold of the above embodiment.

[0057] An embodiment of the present invention further provides a vehicle, comprising the vehicle anti-collision device of the above embodiment.

[0058] Specifically, the vehicle of the embodiment of the present invention may be a private car, such as a sedan, SUV, MPV or pickup truck. The vehicle may also be an operating vehicle, such as a van, bus, small truck or large trailer. The vehicle may be a gasoline vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it may be a hybrid vehicle or a pure electric vehicle.

[0059] An embodiment of the present invention further provides an electronic device, comprising at least one processor and at least one memory, wherein the memory is 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 embodiment.

[0060] Reference Fig.10 As shown, Fig.10The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes: a processor, which can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solution provided in the embodiment of the present application; a memory, which can be implemented in the form of a read-only memory (Read Only Memory, ROM), a static storage device, a dynamic storage device or a random access memory (Random Access Memory, RAM), etc. The memory can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program codes are stored in the memory and are called by the processor to execute the vehicle collision avoidance method of the embodiments of this application; an input / output interface is used to realize information input and output; a communication interface is used to realize communication interaction between this device and other devices, and communication can be realized through wired methods (such as USB, network cables, etc.) or wireless methods (such as mobile networks, WIFI, Bluetooth, etc.); a bus transmits information between various components of the device (such as processors, memory, input / output interfaces and communication interfaces); wherein the processor, memory, input / output interface and communication interface realize communication connection with each other within the device through the bus.

[0061] An embodiment of the present invention further provides a computer-readable storage medium, which includes a stored program, wherein when the program is running, the vehicle collision avoidance method of the above embodiment is executed in a processor of a device where the program is controlled.

[0062] An embodiment of the present invention further provides a computer program product, including a computer program, which implements the vehicle collision avoidance method of the above embodiment when the computer program is executed by a processor.

[0063] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0065] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0066] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0067] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple. In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0068] In the embodiments of the present application, the term "module" or "unit" refers to a computer program or a part of a computer program that has a predetermined function and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories), or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit.

[0069] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0070] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0071] If the integrated unit is implemented in the form of 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 the present application, 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, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Acce Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0072] The step numbers in the above method embodiment are only provided for the convenience of explanation and description, and no limitation is imposed on the order of the steps. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

Claims

1. A vehicle anti-collision device, characterized in that: Applied to a vehicle, the vehicle anti-collision device comprises: an air bag, disposed at the rear of the vehicle; A driving device, disposed on the bottom of the vehicle; A sensor module is provided at the rear of the vehicle, and is used to detect the relative speed between the vehicle and the vehicle behind and the distance between the vehicle and the vehicle behind; The 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 driving device. The support structure has a stowed state and a deployed state. The driving device is used to drive the connecting rod to rotate around one end away from the support plate so that the support structure can switch between the deployed state and the stowed state. In the stowed 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.

2. A vehicle collision avoidance method, characterized in that: Applied to a vehicle, the vehicle comprising the vehicle anti-collision device according to claim 1; The vehicle collision avoidance method comprises: Acquiring the relative speed and the vehicle distance; Establishing a relationship function between the relative speed and time, and determining the derivative of the relationship function at the current moment as the relative acceleration between the vehicle and the rear vehicle; determining a collision risk level of the vehicle according to the relative speed and the relative acceleration; When 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 airbag is controlled to be deployed, and the driving device is controlled to drive the support structure to switch to the deployed state.

3. The vehicle collision avoidance method according to claim 2, characterized in that: The determining of the collision risk level according to the relative speed and the relative acceleration includes: When the relative speed is greater than or equal to a third threshold and the relative acceleration is greater than or equal to a fourth threshold, it is determined that the collision risk level is greater than or equal to a first threshold.

4. The vehicle collision avoidance method according to claim 3, characterized in that: The determining of the collision risk level according to the relative speed and the relative acceleration further includes: When the relative speed is less than a third threshold and the relative acceleration is less than a fourth threshold, it is determined that the collision risk level is less than the first threshold and greater than or equal to a fifth threshold, and the fifth threshold is less than the first threshold; The vehicle collision avoidance method further comprises: 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 send out an alarm signal.

5. The vehicle collision avoidance method according to claim 4, characterized in that: The vehicle anti-collision device includes an alarm, and the step of controlling the vehicle to send out an alarm signal includes: Control the rear taillight of the vehicle to flash and control the siren to sound an alarm.

6. The vehicle collision avoidance method according to claim 2, characterized in that: After the collision risk level is greater than or equal to the first threshold and the vehicle distance is less than or equal to the second threshold, the method further includes: The vehicle condition data of the vehicle is collected and uploaded to the cloud server.

7. A vehicle, characterized in that: The invention comprises the vehicle anti-collision device according to claim 1.

8. 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 claimed in any one of claims 2 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the vehicle collision avoidance method according to any one of claims 2 to 6 is executed in a processor of a device where the program is controlled.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the vehicle collision avoidance method according to claims 2 to 6 is implemented.

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