Pedestrian protection method and device, computer equipment and storage medium

Abstract

The invention relates to a pedestrian protection method and device, computer equipment and a storage medium, and the method comprises the steps: determining the collision strength of a vehicle and a target pedestrian when the collision between the vehicle and the target pedestrian is detected; when the collision intensity exceeds a preset collision intensity threshold value, determining a pedestrian type of the target pedestrian; according to the pedestrian type of the target pedestrian, a pedestrian protection device of the vehicle is triggered, the pedestrian protection device comprises an engine cover with a jacking mechanism and / or a windshield safety air bag, the engine cover is used for protecting the trunk of the target pedestrian or protecting the trunk and the head of the target pedestrian, and the windshield safety air bag is used for protecting the head of the target pedestrian. Through the method and the device, the problem that accurate protection measures cannot be provided for different pedestrians is solved, accurate protection measures are provided for different pedestrians, the protection effect is improved, and meanwhile, the subsequent maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle safety technology, and in particular to a pedestrian protection method, device, computer equipment and storage medium. Background Art

[0002] The pedestrian protection system is used to protect people outside the vehicle when the vehicle collides with pedestrians. In the existing pedestrian protection system, the airbag is usually triggered after the vehicle collides to protect the pedestrians during the collision, but this method cannot provide accurate protection measures for different pedestrians.

[0003] There is currently no effective solution to the problem that related technologies cannot provide accurate protection measures for different pedestrians. Summary of the invention

[0004] In this embodiment, a pedestrian protection method, apparatus, computer device and storage medium are provided to solve the problem in the related art that accurate protection measures cannot be provided for different pedestrians.

[0005] In a first aspect, a pedestrian protection method is provided in this embodiment, and the method includes:

[0006] When a collision between the vehicle and the target pedestrian is detected, determining the collision intensity between the vehicle and the target pedestrian;

[0007] When the collision intensity exceeds a preset collision intensity threshold, determining the pedestrian type of the target pedestrian;

[0008] The pedestrian protection device of the vehicle is triggered according to the type of the target pedestrian; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian; the windshield airbag is used to protect the head of the target pedestrian.

[0009] In some embodiments, when a collision between a vehicle and a target pedestrian is detected, before determining the collision intensity between the vehicle and the target pedestrian, the method further includes:

[0010] Identifying first motion information of the target pedestrian;

[0011] Based on the first motion information and the second motion information of the vehicle, determining whether there is a collision risk between the vehicle and the target pedestrian;

[0012] When a collision risk is detected between the vehicle and the target pedestrian, emergency braking of the vehicle is triggered.

[0013] In some embodiments, when a collision between a vehicle and a target pedestrian is detected, determining the collision intensity between the vehicle and the target pedestrian includes:

[0014] Based on the emergency braking result of the vehicle, determining whether the vehicle will collide with the target pedestrian;

[0015] When it is detected that the vehicle is about to collide with the target pedestrian, triggering a leg airbag at the front of the vehicle;

[0016] When the leg airbag collides with the target pedestrian, a collision intensity between the vehicle and the target pedestrian is determined.

[0017] In some embodiments, determining the collision intensity between the vehicle and the target pedestrian includes:

[0018] Acquiring acceleration data of the vehicle and pressure change data of the front portion of the vehicle;

[0019] The collision intensity between the vehicle and the target pedestrian is determined based on the acceleration data and the pressure change data.

[0020] In some embodiments, triggering the leg airbag at the front of the vehicle includes:

[0021] Acquiring leg data of the target pedestrian;

[0022] A target number of leg airbags at the front of the vehicle are triggered according to the leg data.

[0023] In some embodiments, triggering a pedestrian protection device of the vehicle according to the type of the target pedestrian includes:

[0024] When it is detected that the target pedestrian is a first pedestrian, the engine hood of the vehicle is controlled to be lifted up and the windshield airbag of the vehicle is controlled to be popped out; and the body size data of the first pedestrian exceeds a preset body size threshold.

[0025] In some embodiments, triggering the pedestrian protection device of the vehicle according to the pedestrian type of the target pedestrian further includes:

[0026] When the target pedestrian is detected to be a second pedestrian, the engine hood of the vehicle is controlled to be raised; the body size data of the second pedestrian does not exceed a preset body size threshold.

[0027] In a second aspect, a pedestrian protection device is provided in this embodiment, the device comprising: a detection module, an identification module and a control module;

[0028] The detection module is used to determine the collision intensity between the vehicle and the target pedestrian when a collision between the vehicle and the target pedestrian is detected;

[0029] The recognition module is used to determine the pedestrian type of the target pedestrian when the collision intensity exceeds a preset collision intensity threshold;

[0030] The control module is used to trigger the pedestrian protection device of the vehicle according to the pedestrian type of the target pedestrian; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian; the windshield airbag is used to protect the head of the target pedestrian.

[0031] In a third aspect, a computer device is provided in this embodiment, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the pedestrian protection method described in the first aspect when executing the computer program.

[0032] In a fourth aspect, a storage medium is provided in this embodiment, on which a computer program is stored, and when the program is executed by a processor, the pedestrian protection method described in the first aspect is implemented.

[0033] Compared with the related art, the pedestrian protection method, device, computer equipment and storage medium provided in the present embodiment determine the collision intensity between the vehicle and the target pedestrian when a collision between the vehicle and the target pedestrian is detected; determine the pedestrian type of the target pedestrian when the collision intensity exceeds a preset collision intensity threshold; trigger the vehicle's pedestrian protection device according to the pedestrian type of the target pedestrian, and the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag, the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian, and the windshield airbag is used to protect the head of the target pedestrian, thereby solving the problem of being unable to provide accurate protection measures for different pedestrians, and realizing the provision of accurate protection measures for different pedestrians, improving the protection effect, and reducing subsequent maintenance costs.

[0034] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0036] Figure 1 This is a hardware structure block diagram of a terminal device of a pedestrian protection method provided in an embodiment of the present application;

[0037] Figure 2 is a flow chart of a pedestrian protection method provided by an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of the arrangement of a vehicle device provided in one embodiment of the present application;

[0039] Figure 4 is a flowchart of a pedestrian protection method provided by an embodiment of the present application;

[0040] Figure 5 is a flow chart of a pedestrian protection method provided by a preferred embodiment of the present application;

[0041] Figure 6 It is a structural block diagram of a pedestrian protection device provided in one embodiment of the present application.

[0042] In the figure: 102, processor; 104, memory; 106, transmission device; 108, input and output device; 10, detection module; 20, identification module; 30, control module. DETAILED DESCRIPTION

[0043] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0044] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0045] The method embodiment provided in this embodiment can be executed in a terminal, a computer or a similar computing device. For example, running on a terminal, Figure 1 FIG. 1 is a hardware structure diagram of a terminal of the pedestrian protection method of this embodiment. Figure 1 As shown, the terminal may include one or more ( Figure 1 Only one is shown in the figure) processor 102 and memory 104 for storing data, wherein processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0046] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the pedestrian protection method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0047] The transmission device 106 is used to receive or send data via a network. The above network includes a wireless network provided by the communication provider of the terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0048] In this embodiment, a pedestrian protection method is provided. Figure 2 is a flow chart of the pedestrian protection method of this embodiment. Figure 2 As shown, the process includes the following steps:

[0049] Step S210, when a collision between the vehicle and the target pedestrian is detected, determining the collision intensity between the vehicle and the target pedestrian;

[0050] Step S220, when the collision intensity exceeds a preset collision intensity threshold, determining the pedestrian type of the target pedestrian;

[0051] Step S230, triggering the vehicle's pedestrian protection device according to the type of the target pedestrian; the pedestrian protection device includes the vehicle's hood and / or windshield airbag; the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian; the windshield airbag is used to protect the head of the target pedestrian.

[0052] Specifically, Figure 3As shown, the target pedestrian is identified by the visual recognition system of the vehicle to obtain the pedestrian information of the target pedestrian, which includes the pedestrian type, current position, movement speed, and real-time distance between the pedestrian and the vehicle, etc. The pedestrian information obtained by identification is sent to the pedestrian protection control system of the vehicle. The pedestrian type can be divided according to the pedestrian's body shape. For example, when the body shape data of the target pedestrian is detected to exceed a preset body shape threshold, the target pedestrian is determined to be a first pedestrian, such as a large adult. When the body shape data of the target pedestrian is detected to not exceed the preset body shape threshold, the target pedestrian is determined to be a second pedestrian, such as a child or a small adult.

[0053] Through the pedestrian protection control system, it is determined whether there is a risk of collision between the target pedestrian and the vehicle based on the vehicle's movement speed, the real-time distance between the pedestrian and the vehicle, the pedestrian's movement speed, the pedestrian's position and other information. If a collision risk is detected between the target pedestrian and the vehicle, the vehicle's emergency braking is triggered, and the braking system is controlled to actively brake to decelerate, and a collision warning signal is issued at the same time, such as lighting up the vehicle's collision warning light, voice broadcasting of collision warning information, and seat vibration, to promptly remind the driver.

[0054] Furthermore, the emergency braking result of the vehicle is fed back to the pedestrian protection control system, and based on the received emergency braking result, it is determined whether the vehicle will collide with the target pedestrian. When it is detected that the vehicle and the target pedestrian will collide, that is, when it is confirmed that the collision is unavoidable, the leg airbag at the front of the vehicle is triggered and deployed before the vehicle and the pedestrian come into contact to protect the legs of the target pedestrian. The leg airbag is usually installed at the front bumper of the vehicle, and the pedestrian collision sensor is used to detect whether the vehicle and the target pedestrian collide. When a collision is detected, the collision intensity between the vehicle and the target pedestrian is analyzed based on the acceleration data of the vehicle and the pressure change data at the front of the vehicle.

[0055] Afterwards, it is determined whether the collision intensity between the vehicle and the target pedestrian exceeds a preset collision intensity threshold. If the collision intensity does not exceed the preset collision intensity threshold, there is no need to trigger the pedestrian protection device of the vehicle. If the collision intensity exceeds the preset collision intensity threshold, the pedestrian protection device of the vehicle is triggered accordingly according to the pedestrian type of the target pedestrian. In this embodiment, the pedestrian protection device includes the hood and windshield airbag of the vehicle. When a collision occurs, the hood of the vehicle is lifted up by triggering the hood lifting mechanism of the vehicle to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian, while the windshield airbag user protects the head of the target pedestrian. Among them, when the target pedestrian is detected as the first pedestrian, that is, the size data of the target pedestrian exceeds the preset size threshold, the hood of the vehicle is controlled to be lifted up, and the windshield airbag of the vehicle is triggered to pop out at the same time, so as to protect the torso of the pedestrian by using the lifted hood, and effectively protect the head of the pedestrian by using the windshield airbag, which plays a role in protecting the torso and head of pedestrians with larger bodies; when the target pedestrian is detected as the second pedestrian, that is, the size data of the target pedestrian does not exceed the preset size threshold, the hood of the vehicle is controlled to be lifted up, so as to reduce the damage caused by direct collision by increasing the space between the pedestrian's head and the vehicle, and the deformation of the hood during the collision can absorb part of the energy, thereby reducing the impact force transmitted to the pedestrian's body, and realizing the protection of the torso and head of pedestrians with smaller bodies. It should be noted that when the target pedestrian is a child or baby of smaller body size, the hood lifting mechanism and windshield airbag of the vehicle can be selected not to be triggered according to the actual situation of the pedestrian.

[0056] The pedestrian protection system is used to protect people outside the vehicle when the vehicle collides with pedestrians. In the existing pedestrian protection system, the airbag is usually triggered after the vehicle collides to protect the pedestrians during the collision, but this method cannot provide accurate protection measures for different pedestrians.

[0057] Compared with the prior art, the present application determines the collision intensity between the vehicle and the target pedestrian when a collision between the vehicle and the target pedestrian is detected; determines the pedestrian type of the target pedestrian when the collision intensity exceeds a preset collision intensity threshold; triggers the vehicle's pedestrian protection device according to the pedestrian type of the target pedestrian, and the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag, the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian, and the windshield airbag is used to protect the head of the target pedestrian. Based on this, by triggering the appropriate pedestrian protection device for different types of pedestrians when a collision between the vehicle and the pedestrian is detected, while ensuring that the pedestrian is effectively protected, all protection devices are avoided from being triggered without distinguishing between scenarios, thereby solving the problem of being unable to provide accurate protection measures for different pedestrians, achieving accurate protection measures for different pedestrians, improving the protection effect, and reducing subsequent maintenance costs.

[0058] In some of the embodiments, when a collision between the vehicle and the target pedestrian is detected, before determining the collision intensity between the vehicle and the target pedestrian, the following steps are also included:

[0059] Identify the first motion information of the target pedestrian;

[0060] Based on the first motion information and the second motion information of the vehicle, determining whether there is a collision risk between the vehicle and the target pedestrian;

[0061] When a collision risk is detected between the vehicle and the target pedestrian, the vehicle's emergency braking is triggered.

[0062] Specifically, the first motion information of the target pedestrian is identified through the visual recognition system of the vehicle, and the first motion information includes the current position of the target pedestrian, the motion speed, and the real-time distance between the target pedestrian and the vehicle, etc. The first motion information of the target pedestrian is transmitted to the pedestrian protection control system of the vehicle, and based on the first motion information and the second motion information of the vehicle, it is determined whether there is a collision risk between the vehicle and the target pedestrian.

[0063] Among them, when the risk of collision between the vehicle and the target pedestrian is detected, the vehicle's emergency braking is triggered, and the braking system is controlled to actively brake to slow down, and a collision warning signal is issued at the same time, such as lighting up the vehicle's collision warning lights, voice broadcasting collision warning information, and seat vibration, to promptly remind the driver.

[0064] Through this embodiment, the first motion information of the target pedestrian is identified, and based on the first motion information and the second motion information of the vehicle, it is determined whether there is a collision risk between the vehicle and the target pedestrian, and when the collision risk between the vehicle and the target pedestrian is detected, the emergency braking of the vehicle is triggered, thereby using active safety technology to try to avoid a collision between the vehicle and the target pedestrian, and by combining active safety technology with passive safety technology based on pedestrian protection devices, safety is effectively improved.

[0065] In some embodiments, when a collision between the vehicle and the target pedestrian is detected in step S210, determining the collision intensity between the vehicle and the target pedestrian includes the following steps:

[0066] Step S211, judging whether the vehicle will collide with the target pedestrian based on the emergency braking result of the vehicle;

[0067] Step S212, triggering the leg airbag at the front of the vehicle when it is detected that the vehicle will collide with the target pedestrian;

[0068] Step S213, when the leg airbag collides with the target pedestrian, determining the collision intensity between the vehicle and the target pedestrian.

[0069] Specifically, the emergency braking result of the vehicle is fed back to the pedestrian protection control system, and based on the emergency braking result, it is determined whether the vehicle will collide with the target pedestrian. The emergency braking result is used to indicate the deceleration of the vehicle, and the stopping position of the vehicle after braking is predicted based on the emergency braking result. The moving trajectory of the pedestrian during the vehicle braking period is predicted based on the current position and movement speed of the pedestrian and the real-time distance between the target pedestrian and the vehicle, so as to analyze the final position that the pedestrian may move to in the same time, and then compare the stopping position of the vehicle with the final position that the pedestrian may move to, to determine whether the vehicle will collide with the target pedestrian. If the predicted positions of the two overlap or are close, it is determined that the vehicle and the target pedestrian will collide.

[0070] Furthermore, when it is detected that the vehicle and the target pedestrian are about to collide, the leg airbag at the front of the vehicle is triggered. The leg airbag is usually installed at the front bumper of the vehicle and is deployed before the vehicle and the pedestrian come into contact, so as to effectively protect the legs of the target pedestrian. After that, it is detected whether the leg airbag and the target pedestrian collide. If the leg airbag and the target pedestrian collide, the collision intensity between the vehicle and the target pedestrian is determined.

[0071] Through this embodiment, based on the emergency braking result of the vehicle, it is determined whether the vehicle and the target pedestrian will collide. When it is detected that the vehicle and the target pedestrian will collide, the leg airbag at the front of the vehicle is triggered, and when the leg airbag collides with the target pedestrian, the collision intensity between the vehicle and the target pedestrian is determined, so that the leg airbag is pre-deployed before the collision to protect the legs of the pedestrian and reduce leg injuries.

[0072] In some embodiments, determining the collision intensity between the vehicle and the target pedestrian in step S213 includes the following steps:

[0073] Acquire acceleration data of the vehicle and pressure change data of the front of the vehicle;

[0074] Based on the acceleration data and pressure change data, the collision intensity between the vehicle and the target pedestrian is determined.

[0075] In this embodiment, the acceleration data of the vehicle and the pressure change data of the front of the vehicle are respectively identified and obtained by the acceleration sensor and the pressure sensor, which are usually installed in the front bumper of the vehicle. Specifically, when a collision between the vehicle and the target pedestrian is detected, the reverse acceleration of the fixed position of the sensor is collected by the acceleration sensor to obtain the acceleration data of the vehicle, and the pressure change of the cavity in the front bumper is collected by the pressure sensor to obtain the pressure change data of the front of the vehicle.

[0076] Furthermore, the collision intensity between the vehicle and the target pedestrian is analyzed based on the acceleration data and the pressure change data. For example, the interaction between the vehicle and the pedestrian during the collision is analyzed based on the pressure change data, the energy change before and after the collision is calculated in combination with the acceleration data, and the collision intensity is evaluated based on the energy change before and after the collision; or, a corresponding regression model is established in advance based on historical collision data, the acceleration data and pressure change data of the vehicle are used as input features, and the collision intensity is used as output. In an actual collision scene, the actual collision intensity between the vehicle and the target pedestrian is obtained through the regression model analysis. This embodiment does not specifically limit the calculation method of the collision intensity.

[0077] Through this embodiment, the acceleration data of the vehicle and the pressure change data at the front of the vehicle are obtained, and the collision intensity between the vehicle and the target pedestrian is determined based on the acceleration data and the pressure change data. This accurately analyzes the collision intensity, which helps to improve the accuracy of subsequent triggering of the pedestrian protection device.

[0078] In some embodiments, triggering the leg airbag at the front of the vehicle in step S212 includes the following steps:

[0079] Obtain the leg data of the target pedestrian;

[0080] Based on the leg data, a target number of leg airbags at the front of the vehicle are triggered.

[0081] Specifically, the leg data of the target pedestrian is identified through the vehicle's visual recognition system, and the leg data at least includes the leg length data of the target pedestrian. According to the obtained leg data, the target number of leg airbags at the front of the vehicle are triggered. The leg length data of different pedestrians can be divided into different data intervals, and each data interval is set corresponding to a different target number of leg airbags.

[0082] For example, when the target pedestrian is a child, a single-chamber leg airbag is triggered because the legs of a child are shorter than those of an average adult. When the target pedestrian is an average adult, a dual-chamber leg airbag is usually triggered to ensure effective leg protection.

[0083] Through this embodiment, the leg data of the target pedestrian is obtained, and based on the leg data, a target number of leg airbags at the front of the vehicle are triggered. In this way, a matching number of leg airbags are triggered based on different types of pedestrians. While ensuring that pedestrians are effectively protected, unnecessary airbags are avoided from being triggered, which helps to reduce subsequent maintenance costs.

[0084] In some embodiments, triggering the pedestrian protection device of the vehicle according to the pedestrian type of the target pedestrian in step S230 includes the following steps:

[0085] When the target pedestrian is detected as the first pedestrian, the engine hood of the vehicle is controlled to be lifted and the windshield airbag of the vehicle is controlled to pop out; the body size data of the first pedestrian exceeds the preset body size threshold.

[0086] Specifically, the target pedestrian is identified and detected by the visual recognition system of the vehicle to obtain the body shape data of the target pedestrian, which includes but is not limited to the height, body shape outline and limb length of the target pedestrian. It is understandable that different pedestrian postures will affect the identification of information such as the height and body shape outline of the target pedestrian. Based on the identification and acquisition of body shape data, this embodiment can further evaluate the body shape data in combination with the pedestrian posture.

[0087] Furthermore, the body size data of the target pedestrian is compared with a preset body size threshold. If the body size data of the target pedestrian is detected to exceed the preset body size threshold, the target pedestrian is determined to be the first pedestrian, the hood of the vehicle is controlled to be lifted, and the windshield airbag of the vehicle is triggered to pop out, so as to protect the torso of the pedestrian with the lifted hood and the head of the pedestrian with the windshield airbag, thereby effectively protecting the torso and head of the target pedestrian. The first pedestrian is a pedestrian whose body size data exceeds the body size threshold, such as a large adult.

[0088] Through this embodiment, when it is detected that the body size data of the target pedestrian exceeds the preset body size threshold, the vehicle's engine hood is controlled to be lifted and the vehicle's windshield airbag is controlled to pop out, thereby achieving all-round protection for pedestrians and improving safety.

[0089] In some embodiments, triggering the pedestrian protection device of the vehicle according to the pedestrian type of the target pedestrian in step S230 further includes the following steps:

[0090] When the target pedestrian is detected to be the second pedestrian, the hood of the vehicle is controlled to be raised; the body size data of the second pedestrian does not exceed a preset body size threshold.

[0091] Specifically, the target pedestrian is identified and detected by the visual recognition system of the vehicle to obtain the body data of the target pedestrian, which includes but is not limited to the height, body outline and limb length of the target pedestrian. The body data of the target pedestrian is compared with a preset body threshold. If it is detected that the body data of the target pedestrian does not exceed the preset body threshold, the target pedestrian is determined to be the second pedestrian, and the engine hood of the vehicle is controlled to be raised. Among them, the first pedestrian is a pedestrian whose body data does not exceed the body threshold.

[0092] For example, when the target pedestrian is a child, since the child's body size data does not reach the preset body size threshold, during a collision, only the hood lifting mechanism needs to be triggered to control the vehicle's hood to be lifted, thereby increasing the hard point space between the hood and the cabin below to reduce the damage caused by the pedestrian's head impact. At the same time, the deformation of the hood during a collision can absorb part of the energy, reducing the impact force transmitted to the pedestrian's body, thereby protecting the torso and head of smaller pedestrians.

[0093] Through this embodiment, when it is detected that the target pedestrian's body data does not exceed the preset body size threshold, the vehicle's hood is controlled to be raised, thereby ensuring that pedestrians are effectively protected and avoiding triggering all pedestrian protection devices indiscriminately, which helps to reduce subsequent maintenance costs.

[0094] The present embodiment is described and illustrated by means of specific examples below.

[0095] Figure 4 is a flow chart of the pedestrian protection method of this embodiment, such as Figure 4 As shown, the pedestrian protection method specifically includes the following steps:

[0096] The target pedestrian is identified through the vehicle's visual recognition system to obtain the target pedestrian's pedestrian information S401, which includes the pedestrian type, current location, movement speed, and real-time distance between the pedestrian and the vehicle. The pedestrian information is sent to the pedestrian protection control system, and the target pedestrian and the vehicle are judged based on the vehicle's movement speed and pedestrian information S402. If the target pedestrian and the vehicle are detected to have a collision risk, the vehicle's emergency braking is triggered S403, the braking system is controlled to actively brake to decelerate, and the vehicle's collision warning light is turned on to remind the driver in time. The vehicle deceleration result is fed back to the pedestrian protection control system, and based on the received emergency braking result, it is judged whether the vehicle and the target pedestrian will collide S404. When it is detected that the vehicle and the target pedestrian will collide, the leg airbag at the front of the vehicle is triggered S405.

[0097] Furthermore, the pedestrian collision sensor is used to detect whether the vehicle collides with the target pedestrian. When a collision is detected, the collision intensity between the vehicle and the target pedestrian is analyzed and determined S406, and it is determined whether the collision intensity between the vehicle and the target pedestrian exceeds the preset collision intensity threshold S407. If the collision intensity does not exceed the preset collision intensity threshold, there is no need to trigger the pedestrian protection device of the vehicle S408. If the collision intensity exceeds the preset collision intensity threshold, the pedestrian protection device of the vehicle is triggered accordingly according to the pedestrian type of the target pedestrian. Among them, when it is detected that the body size data of the target pedestrian exceeds the preset body size threshold, the engine hood of the vehicle is controlled to be lifted up, and the windshield airbag of the vehicle is triggered to pop out at the same time, so as to protect the torso of the pedestrian with the lifted engine hood and effectively protect the head of the pedestrian with the windshield airbag S409; when it is detected that the body size data of the target pedestrian does not exceed the preset body size threshold, the engine hood of the vehicle is controlled to be lifted up S410 to protect the torso and head of the pedestrian.

[0098] The present embodiment is described and illustrated below through preferred embodiments.

[0099] Figure 5 is a flow chart of the pedestrian protection method of this preferred embodiment, such as Figure 5 As shown, the pedestrian protection method includes the following steps:

[0100] Step S510, identifying first motion information of a target pedestrian; and determining whether there is a collision risk between the vehicle and the target pedestrian based on the first motion information and second motion information of the vehicle;

[0101] Step S520, triggering emergency braking of the vehicle when a collision risk is detected between the vehicle and the target pedestrian;

[0102] Step S530, based on the emergency braking result of the vehicle, determining whether the vehicle will collide with the target pedestrian, and triggering the leg airbag at the front of the vehicle when it is detected that the vehicle will collide with the target pedestrian;

[0103] Step S540, when the leg airbag collides with the target pedestrian, determining the collision intensity between the vehicle and the target pedestrian;

[0104] Step S550, when the collision intensity exceeds a preset collision intensity threshold and the body size data of the target pedestrian exceeds a preset body size threshold, controlling the engine hood of the vehicle to be lifted and the windshield airbag of the vehicle to be ejected;

[0105] Step S560, when the collision intensity exceeds a preset collision intensity threshold and the body size data of the target pedestrian does not exceed the preset body size threshold, control the engine hood of the vehicle to be raised.

[0106] Through this embodiment, the first motion information of the target pedestrian is identified, and based on the first motion information and the second motion information of the vehicle, it is determined whether there is a collision risk between the vehicle and the target pedestrian, and when it is detected that there is a collision risk between the vehicle and the target pedestrian, the emergency braking of the vehicle is triggered. Based on the emergency braking result of the vehicle, it is determined whether the vehicle and the target pedestrian will collide, and when it is detected that the vehicle and the target pedestrian will collide, the leg airbag at the front of the vehicle is triggered.

[0107] Furthermore, when the leg airbag collides with the target pedestrian, the collision intensity between the vehicle and the target pedestrian is determined. When the collision intensity exceeds the preset collision intensity threshold and the body size data of the target pedestrian exceeds the preset body size threshold, the vehicle's engine hood is controlled to be lifted and the vehicle's windshield airbag is popped out. When the collision intensity exceeds the preset collision intensity threshold and the body size data of the target pedestrian does not exceed the preset body size threshold, the vehicle's engine hood is controlled to be lifted, which solves the problem of being unable to provide accurate protection measures for different pedestrians, realizes the provision of accurate protection measures for different pedestrians, improves the protection effect, and reduces subsequent maintenance costs.

[0108] It should be noted that the steps shown in the above process or the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0109] In this embodiment, a pedestrian protection device is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. The terms "module", "unit", "subunit" and the like used below may be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0110] Figure 6 is a structural block diagram of the pedestrian protection device of this embodiment, such as Figure 6 As shown, the device includes: a detection module 10, an identification module 20 and a control module 30;

[0111] A detection module 10, for determining the collision intensity between the vehicle and the target pedestrian when a collision between the vehicle and the target pedestrian is detected;

[0112] an identification module 20, for determining the pedestrian type of the target pedestrian when the collision intensity exceeds a preset collision intensity threshold;

[0113] The control module 30 is used to trigger the vehicle's pedestrian protection device according to the type of the target pedestrian; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian; the windshield airbag is used to protect the head of the target pedestrian.

[0114] Through the device provided in this embodiment, when a collision between a vehicle and a target pedestrian is detected, the collision intensity between the vehicle and the target pedestrian is determined; when the collision intensity exceeds a preset collision intensity threshold, the pedestrian type of the target pedestrian is determined; according to the pedestrian type of the target pedestrian, the vehicle's pedestrian protection device is triggered, and the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag, the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian, and the windshield airbag is used to protect the head of the target pedestrian, which solves the problem of being unable to provide accurate protection measures for different pedestrians, and realizes the provision of accurate protection measures for different pedestrians, improves the protection effect, and reduces subsequent maintenance costs.

[0115] In some of these embodiments, Figure 6 On the basis of the above, the device also includes an emergency braking module, which is used to identify the first motion information of the target pedestrian; based on the first motion information and the second motion information of the vehicle, determine whether there is a collision risk between the vehicle and the target pedestrian; when the collision risk between the vehicle and the target pedestrian is detected, the emergency braking of the vehicle is triggered.

[0116] In some of the embodiments, the detection module 10 is also used to determine whether the vehicle will collide with a target pedestrian based on the emergency braking result of the vehicle; trigger the leg airbag at the front of the vehicle when it is detected that the vehicle will collide with the target pedestrian; and determine the collision intensity between the vehicle and the target pedestrian when the leg airbag collides with the target pedestrian.

[0117] In some of the embodiments, the detection module 10 is further used to obtain acceleration data of the vehicle and pressure change data of the front of the vehicle; and determine the collision intensity between the vehicle and the target pedestrian based on the acceleration data and the pressure change data.

[0118] In some of the embodiments, the detection module 10 is further used to obtain leg data of the target pedestrian; and trigger a target number of leg airbags at the front of the vehicle according to the leg data.

[0119] In some of the embodiments, the control module 30 is further used to control the vehicle's engine hood to be lifted and the vehicle's windshield airbag to be popped out when it is detected that the target pedestrian is the first pedestrian; and the body size data of the first pedestrian exceeds a preset body size threshold.

[0120] In some of the embodiments, the control module 30 is further configured to control the vehicle's engine hood to be raised when it is detected that the target pedestrian is a second pedestrian; and the body size data of the second pedestrian does not exceed a preset body size threshold.

[0121] It should be noted that the above modules can be functional modules or program modules, and can be implemented by software or hardware. For modules implemented by hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0122] In this embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0123] Optionally, the computer device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0124] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0125] S1, when a collision between the vehicle and the target pedestrian is detected, determining the collision intensity between the vehicle and the target pedestrian;

[0126] S2, when the collision intensity exceeds a preset collision intensity threshold, determining the pedestrian type of the target pedestrian;

[0127] S3, triggering the vehicle's pedestrian protection device according to the type of the target pedestrian; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian; the windshield airbag is used to protect the head of the target pedestrian.

[0128] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation modes, and will not be repeated in this embodiment.

[0129] In addition, in combination with the pedestrian protection method provided in the above embodiments, a storage medium may be provided in this embodiment to implement the pedestrian protection method. The storage medium stores a computer program, and when the computer program is executed by a processor, any pedestrian protection method in the above embodiments is implemented.

[0130] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0131] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0132] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0133] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A pedestrian protection method, characterized in that: The method comprises: When a collision between the vehicle and the target pedestrian is detected, determining the collision intensity between the vehicle and the target pedestrian; When the collision intensity exceeds a preset collision intensity threshold, determining the pedestrian type of the target pedestrian; The pedestrian protection device of the vehicle is triggered according to the type of the target pedestrian; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian; the windshield airbag is used to protect the head of the target pedestrian.

2. The pedestrian protection method according to claim 1, characterized in that: When the collision between the vehicle and the target pedestrian is detected, before determining the collision intensity between the vehicle and the target pedestrian, the method further includes: Identifying first motion information of the target pedestrian; Based on the first motion information and the second motion information of the vehicle, determining whether there is a collision risk between the vehicle and the target pedestrian; When a collision risk is detected between the vehicle and the target pedestrian, emergency braking of the vehicle is triggered.

3. The pedestrian protection method according to claim 2, characterized in that: When a collision between the vehicle and the target pedestrian is detected, determining the collision intensity between the vehicle and the target pedestrian includes: Based on the emergency braking result of the vehicle, determining whether the vehicle will collide with the target pedestrian; When it is detected that the vehicle is about to collide with the target pedestrian, triggering a leg airbag at the front of the vehicle; When the leg airbag collides with the target pedestrian, a collision intensity between the vehicle and the target pedestrian is determined.

4. The pedestrian protection method according to any one of claims 1 to 3, characterized in that: The determining the collision intensity between the vehicle and the target pedestrian includes: Acquiring acceleration data of the vehicle and pressure change data of the front portion of the vehicle; The collision intensity between the vehicle and the target pedestrian is determined based on the acceleration data and the pressure change data.

5. The pedestrian protection method according to claim 1, characterized in that: The triggering of the leg airbag at the front of the vehicle comprises: Acquiring leg data of the target pedestrian; A target number of leg airbags at the front of the vehicle are triggered according to the leg data.

6. The pedestrian protection method according to claim 1, characterized in that: The triggering of the pedestrian protection device of the vehicle according to the pedestrian type of the target pedestrian includes: When it is detected that the target pedestrian is a first pedestrian, the engine hood of the vehicle is controlled to be lifted up and the windshield airbag of the vehicle is controlled to be popped out; and the body size data of the first pedestrian exceeds a preset body size threshold.

7. The pedestrian protection method according to claim 1, characterized in that: The method of triggering the pedestrian protection device of the vehicle according to the pedestrian type of the target pedestrian further includes: When the target pedestrian is detected to be a second pedestrian, the engine hood of the vehicle is controlled to be raised; the body size data of the second pedestrian does not exceed a preset body size threshold.

8. A pedestrian protection device, characterized in that: The device comprises: a detection module, an identification module and a control module; The detection module is used to determine the collision intensity between the vehicle and the target pedestrian when a collision between the vehicle and the target pedestrian is detected; The recognition module is used to determine the pedestrian type of the target pedestrian when the collision intensity exceeds a preset collision intensity threshold; The control module is used to trigger the pedestrian protection device of the vehicle according to the type of the target pedestrian; the pedestrian protection device includes a hood with a lifting mechanism and / or a windshield airbag; the hood is used to protect the torso of the target pedestrian, or to protect the torso and head of the target pedestrian; the windshield airbag is used to protect the head of the target pedestrian.

9. A computer device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps of the pedestrian protection method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the pedestrian protection method according to any one of claims 1 to 7 are implemented.

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