Method and apparatus for opening vehicle trunk based on vehicle-mounted water depth detection system

Abstract

This invention provides a method and apparatus for opening a vehicle trunk based on an onboard water depth detection system, relating to the technical field of vehicle control and applied to vehicles including an onboard water depth detection system. The method includes: first, acquiring the initial ground distance when the vehicle is turned off; then, continuously detecting the current ground distance after the vehicle is turned off; next, determining the distance to an obstacle based on the initial and current ground distances; and if the obstacle distance meets a preset opening threshold, sending a control signal to open the trunk using a domain controller. This method can automatically open the trunk using an onboard water depth detection system, solving the technical problems of high cost and high failure rate of trunk-sensing devices, and achieving cost reduction and false triggering effects.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a method and apparatus for opening a vehicle trunk based on an onboard water depth detection system. Background Technology

[0002] With the rapid development of intelligent driving systems, various user-friendly driver assistance tools are gradually being widely applied to various vehicle models. Currently, vehicle trunk opening includes two forms: manual opening and sensor opening. The traditional manual opening method allows the user to manually open the trunk by pressing the opening button located on the trunk or the trunk opening button on the vehicle key. Some vehicles can also be equipped with a sensor-operated trunk, which uses an automatic sensor under the trunk to automatically open the trunk when a special action is detected (such as lifting or sweeping a foot under the bumper).

[0003] Because users often have to carry heavy or bulky luggage with their hands full when using a vehicle, more and more vehicles are equipped with hands-free trunk opening systems, allowing the trunk to open automatically without manual buttons. However, hands-free trunks use more electronic devices than traditional trunks, significantly increasing manufacturing and maintenance costs. Furthermore, due to the increased number of electronic devices, the failure rate and false trigger rate are also higher than with traditional trunks. In other words, existing hands-free trunk opening systems suffer from high equipment costs and high failure rates. Summary of the Invention

[0004] The purpose of this invention is to provide a method and apparatus for opening a vehicle trunk based on an onboard water depth detection system, so as to alleviate the technical problems of high equipment cost and high failure rate in the prior art.

[0005] In a first aspect, embodiments of the present invention provide a method for opening a vehicle trunk based on an onboard water depth detection system, applicable to a vehicle including an onboard water depth detection system. The onboard water depth detection system includes: a distance sensor disposed at the bottom of an exterior rearview mirror and a domain controller disposed inside the vehicle; the distance sensor is used to measure the distance to the ground and the distance to obstacles; the domain controller is used to calculate the current wading depth based on the distance to the ground and the distance to obstacles and send the calculation to the vehicle's display system; the method includes:

[0006] Obtain the initial ground distance of the above-mentioned vehicles when they are turned off;

[0007] After the aforementioned vehicles are turned off, the current distance to the ground is continuously monitored.

[0008] The distance to the obstacle is determined based on the initial ground distance and the current ground distance mentioned above.

[0009] If the distance to the aforementioned obstacle meets the preset opening threshold, the domain controller will send a control signal to open the trunk.

[0010] In some possible implementations, the distance sensor is an ultrasonic radar monitoring device that emits ultrasonic signals toward the ground and receives reflected waves in a first cycle. The step of continuously detecting the current distance to the ground after the vehicle is turned off includes:

[0011] After the vehicle is turned off, the ultrasonic radar monitoring device emits ultrasonic signals toward the ground every second and receives reflected waves to obtain the current distance to the ground every second.

[0012] In some possible implementations, the step of determining the obstacle distance based on the initial ground distance and the current ground distance includes: if the current ground distance is less than the initial ground distance, then determining the current ground distance as the obstacle distance.

[0013] In some possible implementations, the condition for the obstacle distance to meet the preset opening threshold includes: determining the obstacle distance at least three times within the second cycle.

[0014] In some possible implementations, the condition for the obstacle distance to meet the preset opening threshold also includes: continuously detecting the obstacle distance during the third cycle.

[0015] In some possible implementations, the number of the ultrasonic radar monitoring devices is two, respectively located at the bottom of the left rearview mirror and the bottom of the right rearview mirror of the vehicle.

[0016] The step of continuously detecting the current distance to the ground after the vehicle is turned off includes: after the vehicle is turned off, the left ultrasonic radar monitoring device emits ultrasonic signals toward the ground every second and receives reflected waves to obtain the current left distance to the ground every second; the right ultrasonic radar monitoring device emits ultrasonic signals toward the ground every second and receives reflected waves to obtain the current right distance to the ground every second.

[0017] In some possible implementations, the step of determining the obstacle distance based on the initial ground distance and the current ground distance includes: if the current left ground distance is less than the initial ground distance, then determining the current ground distance as the left obstacle distance; or, if the current right ground distance is less than the initial ground distance, then determining the current ground distance as the right obstacle distance.

[0018] In some possible implementations, the condition for the obstacle distance to meet the preset opening threshold includes: determining the distance of the left obstacle or the distance of the right obstacle at least three times within the second cycle.

[0019] In some possible implementations, the condition for the obstacle distance to meet the preset opening threshold also includes: continuously detecting the distance of the left obstacle or the distance of the right obstacle during the third cycle.

[0020] In a second aspect, embodiments of the present invention provide a vehicle trunk opening device based on an onboard water depth detection system, applied to any of the methods described in the first aspect above; the device includes:

[0021] The initial ground distance acquisition module is used to acquire the initial ground distance of the vehicle when it is turned off.

[0022] The current ground distance acquisition module is used to continuously detect the current ground distance after the vehicle is turned off;

[0023] The obstacle distance determination module is used to determine the obstacle distance based on the initial ground distance and the current ground distance mentioned above.

[0024] The trunk opening module is used to send a control signal to open the trunk using the domain controller if the distance to the aforementioned obstacle meets a preset opening threshold.

[0025] This invention provides a method and apparatus for opening a vehicle trunk based on an onboard water depth detection system. Applied to vehicles including the onboard water depth detection system, the method includes: first, acquiring the initial ground distance when the vehicle is turned off; then, continuously detecting the current ground distance after the vehicle is turned off; next, determining the distance to an obstacle based on the initial and current ground distances; and if the obstacle distance meets a preset opening threshold, sending a control signal using a domain controller to open the trunk. This method enables automatic trunk opening using the onboard water depth detection system, solving the technical problems of high cost and high failure rate of trunk-sensing devices, and achieving cost reduction and minimizing false triggering. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1A flowchart illustrating a method for opening a vehicle trunk based on an onboard water depth detection system, provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram illustrating the principle of a vehicle trunk opening method based on an on-board water depth detection system provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of a vehicle trunk opening device based on an on-board water depth detection system provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Some embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] With the rapid development of intelligent driving systems, various user-friendly driver assistance tools are increasingly being widely applied to various vehicle models. Currently, vehicle trunk opening includes two forms: manual opening and sensor-activated opening. Traditional manual opening allows users to manually open the trunk by pressing the opening button located on the trunk or the trunk opening button on the vehicle key. Some vehicles also feature sensor-activated trunks, which use an automatic sensor under the trunk to open the trunk automatically when a specific action is detected (such as lifting or sweeping a foot under the bumper). Because users often carry heavy or bulky luggage and cannot free their hands, more and more vehicles are equipped with sensor-activated trunks, enabling automatic trunk opening without manual buttons. However, sensor-activated trunks use more electronic devices than traditional trunks, significantly increasing manufacturing and maintenance costs. Furthermore, the increased number of electronic devices also leads to higher failure and false trigger rates compared to traditional trunks. In other words, existing sensor-activated trunk opening devices suffer from high equipment costs and high failure rates.

[0035] Based on this, embodiments of the present invention provide a method and apparatus for opening a vehicle trunk based on an on-board water depth detection system, in order to solve the technical problems of high cost and high failure rate of trunk sensing equipment.

[0036] To facilitate understanding of this embodiment, a method for opening a vehicle trunk based on an onboard water depth detection system disclosed in this invention will first be described in detail. This method is applied to vehicles including an onboard water depth detection system, which includes: a distance sensor disposed at the bottom of the exterior rearview mirror and a domain controller disposed inside the vehicle. The distance sensor is used to measure the distance to the ground and the distance to obstacles; the domain controller is used to calculate the current wading depth based on the distance to the ground and the distance to obstacles and send it to the vehicle's display system.

[0037] In other words, the vehicle-mounted water depth detection system uses ultrasonic radar installed on the exterior rearview mirrors and the vehicle chassis to detect the distance to obstacles. The sensors communicate with the domain controller via I / O, and the domain controller determines whether the vehicle is currently wading through water based on the detection results of each sensor. If the vehicle is wading through water, the main domain controller calculates the current wading depth based on vehicle parameters and displays the vehicle's current wading status to the user on the LCD screen, issuing an alarm reminder when the vehicle is wading through deep water.

[0038] In one embodiment, the distance sensor is an ultrasonic radar monitoring device. The ultrasonic radar monitoring device emits ultrasonic signals towards the ground direction and receives reflected waves in units of a first period. Here, the first period can be a relatively small time period (such as 1 second) to achieve real-time monitoring of obstacles below the sensor when the vehicle is powered off.

[0039] See Figure 1 The flowchart of a method for opening the vehicle trunk based on an in-vehicle water depth detection system is shown, which mainly includes the following steps S110 to step S140:

[0040] S110: Obtain the initial ground distance when the vehicle is powered off;

[0041] S120: Continuously detect the current ground distance after the vehicle is powered off;

[0042] S130: Determine the obstacle distance based on the initial ground distance and the current ground distance;

[0043] S140: If the obstacle distance meets the preset opening threshold, use the domain controller to send a control signal to open the trunk.

[0044] The present invention provides a method for opening the vehicle trunk based on an in-vehicle water depth detection system, which is applied to a vehicle including an in-vehicle water depth detection system. By obtaining the initial ground distance when the vehicle is powered off; then continuously detecting the current ground distance after the vehicle is powered off; and then determining the obstacle distance based on the initial ground distance and the current ground distance. If the obstacle distance meets the preset opening threshold, use the domain controller to send a control signal to open the trunk. This method can use the in-vehicle water depth detection system to achieve automatic opening of the trunk, solve the technical problems of high cost and high failure rate of the inductive trunk device, and achieve the effects of cost reduction and mis-trigger prevention.

[0045] In one embodiment, when the vehicle is powered off, the ultrasonic radar monitoring device obtains its initial ground distance H0 for the first time; the step of continuously detecting the current ground distance in step S120 after the vehicle is powered off includes: after the vehicle is powered off, the ultrasonic radar monitoring device emits ultrasonic signals towards the ground direction and receives reflected waves every second to obtain the current ground distance Hi per second.

[0046] In one embodiment, the step of determining the obstacle distance based on the initial ground distance and the current ground distance in step S130 includes: if the current ground distance is less than the initial ground distance (Hi < H0), then determine the current ground distance Hi as the obstacle distance H.

[0047] In one embodiment, the condition for the obstacle distance to meet the preset opening threshold includes: determining the obstacle distance at least three times within a second period. As a specific example, the second period can be one minute or 30 seconds. For example, a user walks to the rearview mirror of a vehicle and kicks the area below the mirror three times consecutively within a certain time.

[0048] In one embodiment, the condition that the obstacle distance meets the preset opening threshold further includes: continuously detecting the obstacle distance during the third cycle. As a specific example, the third cycle can be 3 seconds or 5 seconds. For example, a user walks to the rearview mirror of a vehicle and kicks the bottom of the rearview mirror with their foot for 3 or 5 seconds.

[0049] In one embodiment, there are two ultrasonic radar monitoring devices, which are respectively installed at the bottom of the left rearview mirror and the bottom of the right rearview mirror of the vehicle; accordingly, step S120 continuously detects the current ground distance after the vehicle is turned off, including: after the vehicle is turned off, the left ultrasonic radar monitoring device emits ultrasonic signals towards the ground every second and receives reflected waves to obtain the current left ground distance per second; the right ultrasonic radar monitoring device emits ultrasonic signals towards the ground every second and receives reflected waves to obtain the current right ground distance per second.

[0050] Because of the randomness of the vehicle's parking position, the distance between the left and right rearview mirrors and the ground may be different. It is necessary to record the current distance between the left and right rearview mirrors and the ground (the initial distance between the left and right rearview mirrors and the initial distance between the right and the ground) according to the real-time road conditions, and record them as HL and HR respectively.

[0051] In one embodiment, the step of determining the obstacle distance based on the initial ground distance and the current ground distance includes: if the current left ground distance is less than the initial ground distance, then determining the current ground distance as the left obstacle distance; or, if the current right ground distance is less than the initial ground distance, then determining the current ground distance as the right obstacle distance.

[0052] In one embodiment, the condition for the obstacle distance to meet the preset opening threshold includes: determining the distance to the left obstacle or the distance to the right obstacle at least three times within the second cycle.

[0053] For example, if a driver walks to the left or right side mirror of the vehicle and kicks the bottom of the mirror three times in succession, the ultrasonic radar can detect the change in the distance to the ground and obtain the distances to the obstacles as H1, H2, and H3 respectively.

[0054] The varying distance is detected by the left rearview mirror of the vehicle or the rearview mirror, which can be used to determine the position where the driver kicks. If the varying ground clearance is on the left side of the vehicle, then this distance is compared with the left rearview mirror's calibrated distance from the ground (the initial ground distance on the left side) HL after the current stop. If the three varying distances all satisfy being less than the calibrated distance, that is, (H1 < HL) && (H2 < HL) && (H3 < HL), it is considered that the driver has kicked. For the driver's kicking action on the right rearview mirror of the vehicle, the same calculation method is used. If (H1 < HR) && (H2 < HR) && (H3 < HR) is satisfied, it is considered that the driver has kicked.

[0055] In one embodiment, the condition that the obstacle distance meets the preset opening threshold further includes: continuously detecting the left obstacle distance or the right obstacle distance within the time of the third cycle.

[0056] For example: When the driver walks to the position of the left or right rearview mirror of the vehicle, kicks backward below the rearview mirror with the foot, and maintains the kicking action for 3 - 5 seconds, the ultrasonic radar can detect the change in the current ground clearance, and obtain the left obstacle distance or the right obstacle distance H4. If the varying ground clearance is on the left side of the vehicle, then this distance is compared with the initial ground distance HL on the left side after the current stop. If H4 < HL is satisfied within a certain time, it is considered that the driver's kicking action is effective; if the varying ground clearance is on the right side of the vehicle, then this distance is compared with the initial ground distance HR on the right side after the current stop. If H4 < HR is satisfied within a certain time, it is considered that the driver's kicking action is effective.

[0057] The present invention provides a method for opening the vehicle trunk based on an in - vehicle water depth detection system, which is applied to a vehicle including an in - vehicle water depth detection system. Among them, in addition to detecting the water depth, this in - vehicle water depth detection system can also be reused to sense the action of opening the trunk. When the driver has many items in hand and it is inconvenient to manually open the trunk, the trunk is opened by sensing the leg movement. Refer to Figure 2 In the shown schematic diagram of the principle, the black part is the detection area of the ultrasonic radar. When the vehicle is stationary, this ultrasonic sensor can sense the change in the detection distance caused by kicking, send a signal to the vehicle domain controller system, and automatically open the vehicle trunk. As a specific example, the method includes the following steps:

[0058] (1) The system works after the vehicle stops; after the vehicle stops and the engine is turned off, the water - related ultrasonic radar system continues to work. The ultrasonic radars installed under the left and right rearview mirrors of the vehicle continue to emit ultrasonic signals in a direct measurement manner towards the ground direction, and receive the ground reflected waves.

[0059] (2) Detection distance calibration of the current environment; due to the randomness of the vehicle parking position, the ground clearance distances of the left and right rearview mirrors of the current vehicle may be different. It is necessary to record the ground clearance distances of the left and right rearview mirrors of the current vehicle according to the real-time road environment, and record them as HL and HR respectively.

[0060] (3) Sense the driver's kicking action; the driver walks to the position of the left or right rearview mirror of the vehicle and kicks backward below the rearview mirror, and performs 3 consecutive kicking actions. Then the ultrasonic radar can detect that the current ground clearance distance has changed, and obtain the distances H1, H2, and H3 respectively. The changed distance is detected by the left rearview mirror or the rearview mirror of the vehicle, which can be used to judge the position where the driver kicks.

[0061] If the changed ground clearance distance is on the left side of the vehicle, then compare this distance with the calibrated distance HL of the left rearview mirror after the current vehicle stops. If all three changed distances are less than the calibrated distance, that is, (H1 < HL) && (H2 < HL) && (H3 < HL), it is considered that the driver has a kicking action. For the driver's kicking action on the right rearview mirror of the vehicle, the same calculation method is used. If (H1 < HR) && (H2 < HR) && (H3 < HR) is satisfied, it is considered that the driver has a kicking action.

[0062] (4) Driver identity recognition; combining the RFID wireless radio frequency technology and identity coding recognition ability of the keyless entry system, the vehicle intelligent controller can recognize that the position of the vehicle owner is within 5m around the vehicle body, and then allows the trunk to be automatically opened.

[0063] (5) Automatically control the opening of the trunk; combining steps (3) and (4), if the ultrasonic radar monitoring device detects a kicking action below the left rearview mirror or the right rearview mirror of the vehicle, and the driver is near the vehicle body, the system considers that the driver has performed a kicking action for the purpose of opening the trunk. The body domain controller sends a control signal to open the trunk and automatically controls the opening of the vehicle trunk.

[0064] This method can use the in-vehicle water depth detection system to realize the automatic opening of the trunk, solve the technical problems of high cost and high failure rate of the inductive trunk equipment, and achieve the effects of cost reduction and mis-trigger prevention.

[0065] In addition, an embodiment of the present invention also provides a vehicle trunk opening device based on an in-vehicle water depth detection system. Refer to Figure 3 , and this device includes:

[0066] An initial ground distance acquisition module 310, which is used to acquire the initial ground distance when the vehicle is powered off;

[0067] A current ground distance acquisition module 320, which is used to continuously detect the current ground distance after the vehicle is powered off;

[0068] The obstacle distance determination module 330 is used to determine the obstacle distance based on the initial ground distance and the current ground distance;

[0069] The trunk opening module 340 is used to send a control signal to open the trunk using the domain controller if the distance to the obstacle meets the preset opening threshold.

[0070] The vehicle trunk opening device based on an onboard water depth detection system provided in this application embodiment can be specific hardware on the device or software or firmware installed on the device. The implementation principle and technical effects of the device provided in this application embodiment are the same as those in the aforementioned method embodiments. For the sake of brevity, any parts not mentioned in the device embodiment can be referred to the corresponding content in the aforementioned method embodiments. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can all be referred to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. The vehicle trunk opening device based on an onboard water depth detection system provided in this application embodiment has the same technical features as the vehicle trunk opening method based on an onboard water depth detection system provided in the above embodiments, and therefore can solve the same technical problems and achieve the same technical effects.

[0071] This application also provides an electronic device, specifically, the electronic device includes a processor and a storage device; the storage device stores a computer program, and the computer program, when run by the processor, executes the method described in any of the above embodiments.

[0072] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device 400 includes: a processor 40, a memory 41, a bus 42, and a communication interface 43. The processor 40, the communication interface 43, and the memory 41 are connected through the bus 42. The processor 40 is used to execute executable modules, such as computer programs, stored in the memory 41.

[0073] The memory 41 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 43 (which can be wired or wireless), such as the Internet, wide area network, local area network, metropolitan area network, etc.

[0074] Bus 42 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0075] The memory 41 is used to store programs. After receiving an execution instruction, the processor 40 executes the program. The method executed by the device for defining the flow process disclosed in any of the foregoing embodiments of the present invention can be applied to the processor 40 or implemented by the processor 40.

[0076] Processor 40 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 40 or by instructions in software form. Processor 40 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this invention can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 41. The processor 40 reads the information in memory 41 and, in conjunction with its hardware, completes the steps of the above method.

[0077] Corresponding to the above method, this application embodiment also provides a computer-readable storage medium storing machine-executable instructions. When the machine-executable instructions are called and run by a processor, the machine-executable instructions cause the processor to perform the steps of the above method.

[0078] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0079] 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.

[0080] In addition, the functional units in the embodiments provided in 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.

[0081] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion 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, electronic device, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. 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.

[0082] It should be noted that similar reference numerals and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings. In addition, the terms "first," "second," "third," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for opening a vehicle trunk based on an onboard water depth detection system, characterized in that, An application to a vehicle including an onboard water depth detection system, the onboard water depth detection system comprising: a distance sensor disposed at the bottom of the exterior rearview mirror and a domain controller disposed inside the vehicle; the distance sensor is an ultrasonic radar monitoring device, and there are two of them, disposed at the bottom of the left and right rearview mirrors of the vehicle, respectively, for measuring the distance to the ground and the distance to obstacles; the domain controller is used to calculate the current wading depth based on the distance to the ground and the distance to obstacles and send it to the vehicle's display system; the method includes: Obtain the initial ground distance of the vehicle when it is turned off; The current distance to the ground is continuously monitored after the vehicle is turned off. The obstacle distance is determined based on the initial ground distance and the current ground distance. If the current ground distance is less than the initial ground distance, then the current ground distance is determined to be the obstacle distance. If the distance to the obstacle meets the preset opening threshold, and the distance to the obstacle is detected by the ultrasonic radar monitoring device at the bottom of the left rearview mirror or the bottom of the right rearview mirror, then the domain controller sends a control signal to open the trunk.

2. The method for opening the vehicle trunk based on an onboard water depth detection system according to claim 1, characterized in that, The ultrasonic radar monitoring device emits ultrasonic signals toward the ground and receives reflected waves in a first cycle. The step of continuously detecting the current distance to the ground after the vehicle is turned off includes: After the vehicle is turned off, the ultrasonic radar monitoring device emits ultrasonic signals toward the ground every second and receives reflected waves to obtain the current distance to the ground every second.

3. The method for opening the vehicle trunk based on an onboard water depth detection system according to claim 2, characterized in that, The conditions under which the distance to the obstacle meets the preset opening threshold include: During the second cycle, the distance to the obstacle is determined no less than three times.

4. The method for opening the vehicle trunk based on an on-board water depth detection system according to claim 2, characterized in that, The conditions under which the obstacle distance meets the preset opening threshold also include: During the third cycle, the distance to the obstacle was continuously detected.

5. The method for opening the vehicle trunk based on an onboard water depth detection system according to claim 2, characterized in that, The step of continuously detecting the current distance to the ground after the vehicle is turned off includes: After the vehicle is turned off, the left ultrasonic radar monitoring device emits ultrasonic signals toward the ground every second and receives reflected waves to obtain the current left distance to the ground every second. The ultrasonic radar monitoring device on the right emits ultrasonic signals toward the ground every second and receives reflected waves to obtain the current distance to the ground on the right side every second.

6. The method for opening a vehicle trunk based on an onboard water depth detection system according to claim 5, characterized in that, The step of determining the obstacle distance based on the initial ground distance and the current ground distance includes: If the current distance to the ground on the left is less than the initial distance to the ground, then the current distance to the ground is determined to be the distance to the obstacle on the left. Alternatively, if the current right-side distance to the ground is less than the initial distance to the ground, then the current distance to the ground is determined to be the distance to the right-side obstacle.

7. The method for opening a vehicle trunk based on an onboard water depth detection system according to claim 6, characterized in that, The conditions under which the distance to the obstacle meets the preset opening threshold include: During the second cycle, the distance to the left obstacle or the distance to the right obstacle is determined no less than three times.

8. The method for opening the vehicle trunk based on an on-board water depth detection system according to claim 6, characterized in that, The conditions under which the obstacle distance meets the preset opening threshold also include: During the third cycle, the distance to the left obstacle or the distance to the right obstacle is continuously detected.

9. A vehicle trunk opening device based on an onboard water depth detection system, characterized in that, The apparatus is applied to the method according to any one of claims 1 to 8; the apparatus comprises: The initial ground distance acquisition module is used to acquire the initial ground distance of the vehicle when it is turned off. The current ground distance acquisition module is used to continuously detect the current ground distance after the vehicle is turned off; An obstacle distance determination module is used to determine the obstacle distance based on the initial ground distance and the current ground distance. If the current ground distance is less than the initial ground distance, then the current ground distance is determined to be the obstacle distance. The trunk opening module is used to send a control signal to open the trunk using the domain controller if the distance to the obstacle meets a preset opening threshold and the distance to the obstacle is detected by an ultrasonic radar monitoring device at the bottom of the left rearview mirror or the bottom of the right rearview mirror.

Images