Control method, device and equipment of active pop-up hood and medium

Abstract

The application discloses a control method, device and equipment of an active pop-up hood and a medium, and belongs to the technical field of vehicle safety. The control method comprises the following steps: obtaining the collision acceleration and the collision pressure of a vehicle; if the collision acceleration is greater than an acceleration threshold or the collision pressure is greater than a pressure threshold, determining whether the vehicle is running on a water road or a non-water road; if the vehicle is running on a non-water road, controlling the active pop-up hood to pop up; and if the vehicle is running on a water road, obtaining the wading depth of the vehicle; if the wading depth is less than a first depth threshold, controlling the active pop-up hood to pop up. When it is preliminarily determined that the vehicle may collide with a pedestrian, the wading depth of the vehicle is further determined to know whether the collision is caused by the vehicle running in water, and whether the active pop-up hood pops up can be more accurately controlled, the false pop-up rate of the active pop-up hood is reduced, and the maintenance cost of the vehicle is reduced.

Description

Technical Field

[0001] This invention relates to the field of vehicle safety technology, and in particular to a control method, device, equipment and medium for an active pop-up hood. Background Technology

[0002] An active pop-up hood refers to a hood that pops up upon impact with a pedestrian to increase the gap between the hood and the hard point underneath, thus increasing the impact buffer space and further reducing the injury to the pedestrian's head.

[0003] Currently, the active pop-up hood is controlled to pop up when a vehicle collides with a pedestrian. However, when colliding with non-pedestrian objects, the impact signal is very similar to that of a pedestrian, which can also cause the active pop-up hood to pop up, resulting in a high false pop-up rate and increasing vehicle maintenance costs. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a control method, device, equipment and medium for an active pop-up hood that solves the above problems. When it is initially determined that a vehicle may hit a pedestrian, the wading depth of the vehicle can be further determined to understand whether the collision was caused by the vehicle driving in water. This allows for more accurate control of whether the active pop-up hood pops up, reduces the false pop-up rate of the active pop-up hood, reduces vehicle maintenance costs, and consequently reduces consumer complaints, making the active pop-up hood more acceptable to consumers and facilitating the promotion of pedestrian protection devices.

[0005] In a first aspect, the present invention provides a control method for an actively pop-up hood, the control method comprising:

[0006] Obtain the vehicle's collision acceleration and collision pressure;

[0007] If the collision acceleration is greater than the acceleration threshold or the collision pressure is greater than the pressure threshold, then it is determined whether the vehicle is traveling on a wet road or a dry road.

[0008] If the vehicle is traveling on the dry road, the active pop-up hood is controlled to pop up.

[0009] If the vehicle is traveling on a flooded road, the wading depth of the vehicle is obtained; if the wading depth is less than a first depth threshold, the active pop-up hood is controlled to pop up.

[0010] Optionally, after acquiring the vehicle's collision acceleration and collision pressure, the control method further includes:

[0011] If the collision acceleration is less than or equal to the acceleration threshold and the collision pressure is less than or equal to the pressure threshold, then the active pop-up hood is controlled not to pop up.

[0012] Optionally, if the vehicle is traveling on the flooded road, after obtaining the vehicle's wading depth, the control method further includes:

[0013] If the wading depth exceeds the second depth threshold, an alarm will be triggered.

[0014] Wherein, the first depth threshold is less than the second depth threshold.

[0015] Optionally, obtaining the wading depth of the vehicle includes:

[0016] The vehicle's tilt angle and the ultrasonic radar's signal transmission angle, as well as the ultrasonic radar's signal transmission and reception times, are obtained.

[0017] The wading depth of the vehicle is determined based on the tilt angle, the signal transmission angle, the signal transmission time, and the signal reception time.

[0018] In a second aspect, the present invention provides a control device for an actively pop-up hood, the control device comprising:

[0019] The first acquisition module is used to acquire the vehicle's collision acceleration and collision pressure;

[0020] The judgment module is used to determine whether the vehicle is traveling on a wet road or a dry road if the collision acceleration is greater than an acceleration threshold or the collision pressure is greater than a pressure threshold.

[0021] The first control module is used to control the active pop-up hood to pop up if the vehicle is traveling on the dry road.

[0022] The second control module is used to obtain the wading depth of the vehicle if the vehicle is traveling on a flooded road; and to control the active pop-up hood to pop up if the wading depth is less than a first depth threshold.

[0023] Optionally, after acquiring the vehicle's collision acceleration and collision pressure, the control device further includes:

[0024] The third control module is used to control the active pop-up hood not to pop up if the collision acceleration is less than or equal to the acceleration threshold and the collision pressure is less than or equal to the pressure threshold.

[0025] Optionally, if the vehicle is traveling on the flooded road, after obtaining the vehicle's wading depth, the control device further includes:

[0026] An alarm module is used to issue an alarm if the wading depth is greater than a second depth threshold.

[0027] Wherein, the first depth threshold is less than the second depth threshold.

[0028] Optionally, the second control module is further used for:

[0029] The vehicle's tilt angle and the ultrasonic radar's signal transmission angle, as well as the ultrasonic radar's signal transmission and reception times, are obtained.

[0030] The wading depth of the vehicle is determined based on the tilt angle, the signal transmission angle, the signal transmission time, and the signal reception time.

[0031] Thirdly, the present invention provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the control method as described in the first aspect.

[0032] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing the computer to perform the control method as described in the first aspect.

[0033] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0034] This invention provides a control method, device, equipment, and medium for an active pop-up hood. It first acquires the vehicle's collision acceleration and collision pressure to determine if the vehicle has struck a pedestrian. If the collision acceleration exceeds an acceleration threshold or the collision pressure exceeds a pressure threshold, it indicates the vehicle may have struck a pedestrian, and the system further determines whether the vehicle is traveling on a wet or dry road. If the vehicle is traveling on a dry road, it indicates a possible pedestrian collision, and the active pop-up hood is activated. If the vehicle is traveling on a wet road, the system further acquires the vehicle's wading depth. If the wading depth is less than a first depth threshold, it indicates the collision was not caused by the vehicle traveling in water but by striking a pedestrian, and the active pop-up hood is activated again. This method can more accurately control whether the active pop-up hood activates, reducing the false activation rate and thus lowering vehicle maintenance costs. This reduces consumer complaints, making the active pop-up hood more acceptable to consumers and promoting the use of pedestrian protection devices.

[0035] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0037] Figure 1 This is a flowchart of a control method for an active pop-up hood provided in an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram illustrating the detection of a vehicle's wading depth according to an embodiment of the present invention;

[0039] Figure 3 This is a structural block diagram of a control device for an active pop-up hood provided in an embodiment of the present invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0041] Figure 1 This is a flowchart of a control method for an active pop-up hood provided by an embodiment of the present invention, as shown below. Figure 1 As shown, the control method includes:

[0042] Step S110: Obtain the vehicle's collision acceleration and collision pressure.

[0043] In this application, an acceleration sensor and a pressure sensor can be installed on the vehicle to detect the collision acceleration and collision pressure when the vehicle collides. Alternatively, only one of the acceleration sensor and the pressure sensor may be installed, as needed; this application does not limit this.

[0044] The pressure sensor is usually placed between the anti-collision beam and the front bumper foam to facilitate the detection of pressure signals generated by the impact; the acceleration sensor is usually placed inside the front bumper to facilitate the detection of acceleration signals during the impact.

[0045] Step S120: If the collision acceleration is greater than the acceleration threshold or the collision pressure is greater than the pressure threshold, then determine whether the vehicle is traveling on a wet road or a dry road.

[0046] This can be understood as the system needing to monitor the road conditions ahead in real time while the vehicle is in motion to determine if there is any standing water. The presence of standing water indicates a flooded road condition, while the absence of standing water indicates a dry road condition. Different control strategies are employed for the active pop-up hood in these two scenarios. If the road conditions ahead indicate flooded conditions, it means the system needs to assess the vehicle's ability to wade through water to determine if the water will generate the set collision acceleration and pressure. If the road conditions ahead indicate dry conditions, it means monitoring the vehicle's ability to wade through water is not required.

[0047] In this application, due to the rapid development of navigation technology, navigation information can detect water accumulation at various locations along the navigation route in real time. Therefore, by acquiring navigation information, the road conditions ahead can be obtained, and it can be determined whether there is water on the road ahead. Alternatively, images of the road ahead can be acquired through cameras mounted on vehicles, and the presence of water can be determined through image analysis. The image-based road surface water accumulation recognition technology utilizes advanced computer vision and image processing algorithms to analyze road images or videos captured by cameras to determine in real time whether there is water accumulation on the road. Specific analysis methods are not detailed in this application.

[0048] This application also allows for real-time monitoring of the driver's braking behavior to determine whether the vehicle is traveling on a flooded or dry road. If the driver brakes, it indicates potential water accumulation ahead, prompting the driver to slow down. If the driver does not brake, it indicates the road ahead is normal and there is no water. The driver's braking behavior can be obtained through the vehicle's ECU (Electronic Control Unit).

[0049] Step S130: If the vehicle is traveling on the dry road, control the active pop-up hood to pop up.

[0050] This can be understood as follows: when the road is dry, if a vehicle is involved in a collision, and the collision acceleration is greater than the acceleration threshold or the collision pressure is greater than the pressure threshold, it means that the vehicle may have hit a pedestrian and the impact intensity is high. In this case, the active pop-up hood is directly controlled to pop up to reduce the injury to the pedestrian's head.

[0051] Step S130: If the vehicle is traveling on the watery road, the wading depth of the vehicle is obtained; if the wading depth is less than a first depth threshold, the active pop-up hood is controlled to pop up.

[0052] This can be understood as follows: when the road condition is wet, if a vehicle is involved in a collision, and the collision acceleration is greater than the acceleration threshold or the collision pressure is greater than the pressure threshold, it is necessary to further determine whether the collision was caused by the vehicle driving in water and the impact of the water on the vehicle, that is, to further obtain the vehicle's wading depth.

[0053] In this application, if the wading depth is less than a first depth threshold, it indicates that the vehicle is very likely to have collided with a pedestrian, so the engine hood needs to be raised, i.e., the active pop-up hood needs to be controlled to pop up. If the wading depth is greater than or equal to the first depth threshold, it indicates that the acceleration and pressure generated by the impact are caused by the water hitting the vehicle, not by hitting a pedestrian. Moreover, when the wading depth is greater than the first depth threshold, it indicates that the water is already quite deep, and the probability of a pedestrian walking in water at that depth is very low. Even if a pedestrian does walk in water at that depth, the vehicle speed will not be too high, and even if it hits a pedestrian, it will not cause much harm. Therefore, it is not necessary to raise the engine hood in this case, i.e., the active pop-up hood needs to be controlled not to pop up.

[0054] Optionally, step S140 includes:

[0055] The vehicle's tilt angle and ultrasonic radar signal transmission angle, as well as the ultrasonic radar signal transmission and reception times, are obtained. Based on the tilt angle, signal transmission angle, signal transmission time, and signal reception time, the vehicle's wading depth is determined.

[0056] In this application, the wading depth of a vehicle can be detected using ultrasonic radar. The ultrasonic radar may need to be positioned at a predetermined location. For example, the predetermined location could be on the center rearview mirror inside the driver's cab.

[0057] It should be noted that the ultrasonic radar is activated to detect the vehicle's wading depth when the road is flooded or when the driver brakes; the ultrasonic radar is deactivated and wading depth detection is not performed when the road is dry or when the driver does not brake. This saves vehicle energy consumption and controller computing power.

[0058] Figure 2 This is a schematic diagram illustrating the detection of a vehicle's wading depth according to an embodiment of the present invention, as shown below. Figure 2 As shown, the vehicle's tilt angle α is the angle between the vehicle's vertical surface A and the horizontal surface B, and the ultrasonic radar's signal transmission angle β is the angle between the signal transmission direction C and the vehicle's vertical surface A. The horizontal surface B is also the surface of the accumulated water. Then, based on α and β, as well as the signal transmission time, signal reception time, and the speed of ultrasonic wave propagation in air, the vehicle's wading depth can be calculated using the Pythagorean theorem.

[0059] For example, based on the signal transmission time, signal reception time, and the speed of ultrasonic wave propagation in air, the propagation distance of the ultrasonic signal in the air can be calculated, i.e., the distance between points a and b, where point a is the location of the ultrasonic radar and point b is the point of contact between the ultrasonic wave and the water surface. Point c is the intersection of the vehicle's vertical surface A (passing through the front of the vehicle) and the signal transmission direction C of the ultrasonic signal. The vertical distance from point c to the ground is denoted as h, which is a constant. The wading point d on the vehicle is located on the vehicle's vertical surface A, and the distance from point d to point c is denoted as h1. Since the distance from point c to point a is a constant, the distance between points c and b can be obtained by subtracting the distance from point c to point a from the distance between points a and b. Based on α, β, and the distance between points c and b, h1 can be calculated. Subtracting h1 from h gives the wading depth h2 of the vehicle, i.e., the vertical distance from point d to the road surface.

[0060] In this application, a water level sensor can also be used to detect the wading depth of a vehicle. Specifically, different water level sensors are placed at different heights at the front of the vehicle to detect the wading depth.

[0061] As my country increasingly emphasizes pedestrian protection in vehicle accidents, more and more vehicles are equipped with active pop-up hoods to reduce injuries to pedestrians. Upon impact with a pedestrian, the hood pops up to increase the gap between the hood and the hard point beneath it, thus increasing the collision buffer space and further reducing head injuries to pedestrians. Currently, automakers typically use system calibration to ensure that the active hood system only pops up upon impact with a pedestrian, and not upon impact with objects, thereby reducing the false pop-up rate and lowering vehicle maintenance costs. However, the impact signal when a vehicle hits the water surface while driving through water is extremely similar to the impact signal when hitting a pedestrian, making it impossible to distinguish through system calibration. This leads to false pop-up of the active hood when a vehicle is driving through water.

[0062] This application distinguishes whether the impact is caused by the vehicle driving in water by further detecting the vehicle's wading depth. If the impact signal is found to be caused by the vehicle hitting the water surface while wading, the engine hood will not pop up. This can reduce the false pop-up rate of the active pop-up hood when the vehicle is wading, avoid the maintenance costs caused by false pop-ups, reduce consumer complaints, and make consumers more accepting of the active pop-up hood, which is conducive to the promotion of pedestrian protection devices.

[0063] In this application, the first depth threshold is the difference between the arrangement height of the acceleration sensor used to detect collision acceleration and a set value, or the difference between the arrangement height of the pressure sensor used to detect collision pressure and a set value.

[0064] In this application, a depth threshold can be determined based on the height of the accelerometer or pressure sensor above the ground. This depth threshold can be slightly lower than the height of the accelerometer or pressure sensor to enable more timely detection of the vehicle's wading status.

[0065] Optionally, the control methods also include:

[0066] If the wading depth exceeds the second depth threshold, an alarm will be triggered.

[0067] The first depth threshold is less than the second depth threshold. The second depth threshold can be set according to the actual situation.

[0068] In this application, when the wading depth of a vehicle is too high, it is difficult for the vehicle to safely cross the flooded road ahead. Therefore, an alarm can be triggered to remind the driver that the vehicle is wading through deep water, so that timely countermeasures can be taken to ensure the safety of people and vehicles.

[0069] In this application, when a water level sensor is used to detect the wading depth of a vehicle, the water level sensor may include a first water level sensor and a second water level sensor. The first water level sensor is used to detect whether the wading depth of the vehicle reaches a first depth threshold, and the second water level sensor is used to detect whether the wading depth of the vehicle reaches a second depth threshold.

[0070] Optionally, after acquiring the vehicle's collision acceleration and collision pressure, the control method further includes:

[0071] If the collision acceleration is less than or equal to the acceleration threshold and the collision pressure is less than or equal to the pressure threshold, the active pop-up hood will not pop up.

[0072] This can be understood as follows: regardless of the road conditions under which the vehicle is traveling, if the collision acceleration is less than or equal to the acceleration threshold and the collision pressure is less than or equal to the pressure threshold, it means that the vehicle has not been involved in a collision or the collision intensity is small. In this case, it is not necessary to pop up the engine hood, that is, to control the active pop-up engine hood to not pop up.

[0073] Based on the same inventive concept, embodiments of the present invention also provide a control device for an actively pop-up hood. Figure 3 This is a structural block diagram of a control device for an active pop-up hood provided in an embodiment of the present invention, as shown below. Figure 3 As shown, the control device 300 includes a first acquisition module 310, a judgment module 320, a first control module 330, and a second control module 340.

[0074] The acquisition module 310 is used to acquire the collision acceleration and collision pressure of the vehicle;

[0075] The judgment module 320 is used to determine whether the vehicle is traveling on a wet road or a dry road if the collision acceleration is greater than the acceleration threshold or the collision pressure is greater than the pressure threshold.

[0076] The first control module 330 is used to control the active pop-up hood to pop up if the vehicle is traveling on the dry road.

[0077] The second control module 340 is used to obtain the wading depth of the vehicle if the vehicle is traveling on the watery road; and to control the active pop-up hood to pop up if the wading depth is less than a first depth threshold.

[0078] In this application, if the wading depth exceeds a first depth threshold, it indicates that the acceleration and pressure generated by the impact are due to the water hitting the vehicle, not because a pedestrian was hit. This control device can more accurately control whether the active pop-up hood pops up, reducing the false pop-up rate of the active pop-up hood and thus reducing vehicle maintenance costs.

[0079] This control device can monitor the road conditions ahead of the vehicle in real time while the vehicle is in motion to determine if there is standing water. Different control modules will be activated for the active pop-up hood depending on whether there is standing water or not.

[0080] Optionally, after acquiring the vehicle's collision acceleration and collision pressure, the control device 300 further includes:

[0081] The third control module is used to control the active pop-up hood not to pop up if the collision acceleration is less than or equal to the acceleration threshold and the collision pressure is less than or equal to the pressure threshold.

[0082] Optionally, if the vehicle is traveling on the flooded road, after obtaining the vehicle's wading depth, the control device 300 further includes:

[0083] The alarm module is used to issue an alarm if the wading depth exceeds the second depth threshold.

[0084] The first depth threshold is less than the second depth threshold.

[0085] In this application, when the wading depth of a vehicle is too high, it is difficult for the vehicle to safely cross the flooded road ahead. Therefore, an alarm can be triggered to remind the driver that the vehicle is wading through deep water, so that timely countermeasures can be taken to ensure the safety of people and vehicles.

[0086] Optionally, the second control module 340 is also used for:

[0087] The vehicle's tilt angle and the ultrasonic radar's signal transmission angle, as well as the ultrasonic radar's signal transmission and reception times, are obtained.

[0088] The wading depth of the vehicle is determined based on the tilt angle, signal transmission angle, signal transmission time, and signal reception time.

[0089] Optionally, the depth threshold is the difference between the arrangement height of the acceleration sensor used to detect collision acceleration and a set value, or the difference between the arrangement height of the pressure sensor used to detect collision pressure and a set value.

[0090] It is understood that the device provided in the above embodiments is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0091] This control device first acquires the vehicle's collision acceleration and collision pressure to determine if the vehicle has struck a pedestrian. If the collision acceleration exceeds an acceleration threshold or the collision pressure exceeds a pressure threshold, it indicates that the vehicle may have struck a pedestrian, and the device then acquires the vehicle's wading depth. If the wading depth exceeds a first depth threshold, it indicates that the collision was caused by the vehicle traveling in water, not by hitting a pedestrian, and therefore the active pop-up hood is prevented from popping up. This device can reduce the false pop-up rate of the active pop-up hood when the vehicle is wading, avoiding maintenance costs caused by false pop-ups, thereby reducing consumer complaints and making consumers more accepting of active pop-up hoods, which is conducive to the promotion of pedestrian protection devices.

[0092] This invention also provides an electronic device that may include a processor and a memory, wherein the processor and the memory may be interconnected via a bus or other means.

[0093] The processor may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0094] Memory may include mass storage for data or instructions. For example, and not limitingly, memory may include hard disk drives (HDDs), floppy disk drives, flash memory, optical disks, magneto-optical disks, magnetic tape, or Universal Serial Bus (USB) drives, or combinations of two or more of these. Where appropriate, memory may include removable or non-removable (or fixed) media. Where appropriate, memory may be internal or external to an electronic device. In a particular embodiment, memory may be non-volatile solid-state memory.

[0095] In one instance, the memory may be read-only memory (ROM). In one instance, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0096] The processor reads and executes computer program instructions stored in the memory to implement any of the active pop-up hood control methods in the above embodiments.

[0097] In one example, the electronic device may further include a communication interface and a bus. The processor, memory, and communication interface are connected via the bus to communicate with each other. The communication interface is primarily used to enable communication between the various modules, devices, units, and / or equipment in the embodiments of this application. Where appropriate, the bus may include one or more buses.

[0098] Furthermore, in conjunction with the control method for the active pop-up hood in the above embodiments, this invention can be implemented using a computer-readable storage medium. This computer-readable storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the control methods for the active pop-up hood in the above embodiments.

[0099] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0100] This invention provides a control method, device, equipment, and medium for an active pop-up hood. It first acquires the vehicle's collision acceleration and collision pressure to determine if the vehicle has struck a pedestrian. If the collision acceleration exceeds an acceleration threshold or the collision pressure exceeds a pressure threshold, it indicates the vehicle may have struck a pedestrian, and the system further determines whether the vehicle is traveling on a wet or dry road. If the vehicle is traveling on a dry road, it indicates a possible pedestrian collision, and the active pop-up hood is activated. If the vehicle is traveling on a wet road, the system further acquires the vehicle's wading depth. If the wading depth is less than a first depth threshold, it indicates the collision was not caused by the vehicle traveling in water but by striking a pedestrian, and the active pop-up hood is activated again. This method can more accurately control whether the active pop-up hood activates, reducing the false activation rate and thus lowering vehicle maintenance costs. This reduces consumer complaints, making the active pop-up hood more acceptable to consumers and promoting the use of pedestrian protection devices.

[0101] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0102] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0103] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A control method for an actively pop-up hood, characterized in that, The control method includes: Obtain the vehicle's collision acceleration and collision pressure; If the collision acceleration is greater than the acceleration threshold or the collision pressure is greater than the pressure threshold, it is determined whether the vehicle is traveling on a wet or dry road. Specifically, the vehicle uses a camera mounted on it to acquire image information of the road ahead, and the presence or absence of water on the road ahead is determined by analyzing the image information. If the vehicle is traveling on a dry road, the active pop-up hood is controlled to pop up. If the vehicle is traveling on a flooded road, the wading depth of the vehicle is obtained; if the wading depth is less than a first depth threshold, the active pop-up hood is controlled to pop up.

2. The control method for the active pop-up hood according to claim 1, characterized in that, After acquiring the vehicle's collision acceleration and collision pressure, the control method further includes: If the collision acceleration is less than or equal to the acceleration threshold and the collision pressure is less than or equal to the pressure threshold, then the active pop-up hood is controlled not to pop up.

3. The control method for the active pop-up hood according to claim 1, characterized in that, If the vehicle is traveling on a flooded road, after obtaining the vehicle's wading depth, the control method further includes: If the wading depth exceeds the second depth threshold, an alarm will be triggered. Wherein, the first depth threshold is less than the second depth threshold.

4. The control method for the active pop-up hood according to claim 1, characterized in that, The method of obtaining the wading depth of the vehicle includes: The vehicle's tilt angle and the ultrasonic radar's signal transmission angle, as well as the ultrasonic radar's signal transmission and reception times, are obtained. The wading depth of the vehicle is determined based on the tilt angle, the signal transmission angle, the signal transmission time, and the signal reception time.

5. A control device for an actively pop-up machine cover, characterized in that, The control device includes: The acquisition module is used to acquire the vehicle's collision acceleration and collision pressure. The judgment module is used to determine whether the vehicle is traveling on a wet or dry road if the collision acceleration is greater than an acceleration threshold or the collision pressure is greater than a pressure threshold; wherein, the vehicle acquires image information of the road surface ahead through a camera installed on the vehicle, and determines whether there is water on the road surface ahead by analyzing the image information. The first control module is used to control the active pop-up hood to pop up if the vehicle is traveling on the dry road. The second control module is used to obtain the wading depth of the vehicle if the vehicle is traveling on a flooded road; and to control the active pop-up hood to pop up if the wading depth is less than a first depth threshold.

6. The control device for the active pop-up hood according to claim 5, characterized in that, After acquiring the vehicle's collision acceleration and collision pressure, the control device further includes: The third control module is used to control the active pop-up hood not to pop up if the collision acceleration is less than or equal to the acceleration threshold and the collision pressure is less than or equal to the pressure threshold.

7. The control device for the active pop-up hood according to claim 5, characterized in that, If the vehicle is traveling on the flooded road, after obtaining the vehicle's wading depth, the control device further includes: An alarm module is used to issue an alarm if the wading depth is greater than a second depth threshold. Wherein, the first depth threshold is less than the second depth threshold.

8. The control device for the active pop-up hood according to claim 5, characterized in that, The second control module is also used for: The vehicle's tilt angle and the ultrasonic radar's signal transmission angle, as well as the ultrasonic radar's signal transmission and reception times, are obtained. The wading depth of the vehicle is determined based on the tilt angle, the signal transmission angle, the signal transmission time, and the signal reception time.

9. An electronic device, characterized in that, include: A memory and a processor are communicatively connected, the memory stores computer instructions, and the processor executes the control method of any one of claims 1-4 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the control method according to any one of claims 1-4.

Images