Vehicle passenger protection device and method, electronic equipment and vehicle

Abstract

The invention relates to a vehicle passenger protection device and method, electronic equipment and a vehicle. A passenger feature sensing module is used for obtaining physiological feature parameters of a passenger and seat information of a seat taken by the passenger; the safety integrated control system is used for acquiring the physiological characteristic parameters, the seat information and the trigger signal, determining target recovery force according to the physiological characteristic parameters and the seat information when a vehicle emergency braking function is triggered according to the trigger signal, and generating a safety belt recovery force control signal according to the target recovery force; the safety belt recovery force control module is used for converting a safety belt recovery force control signal output by the safety integrated control system into a safety belt recovery force driving signal; and the active safety belt executing mechanism is used for driving the active safety belt of the seat where the passenger is located to be retracted or released according to the safety belt retracting force driving signal so as to adjust the retracting force of the active safety belt of the seat where the passenger is located. According to the embodiment of the invention, the neck whiplash injury of passengers is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of intelligent safe driving technology for automobiles, specifically to a vehicle occupant protection device, method, electronic device, and vehicle. Background Technology

[0002] Rear-end collisions are currently one of the most common types of traffic accidents, especially when a vehicle suddenly decelerates, such as during emergency braking. If the following vehicle fails to react in time, a rear-end collision is highly likely. When a vehicle occupant is rear-ended due to inertia, the occupant's neck often suffers severe whiplash injuries. Specifically, when a vehicle is rear-ended, the car suddenly accelerates forward. Because the occupant's body is restrained by the seat and seatbelt, it moves forward with the car. However, the head lags behind due to inertia, causing the neck to be in a state of hyperextension (backward tilt). Then, the head swings forward due to inertia, and the neck is in a state of hyperflexion (forward bend). Because this rapid back-and-forth movement of the head relative to the body resembles the action of a whip, it is called a whiplash injury.

[0003] In practice, vehicle seats are equipped with headrests. During actual driving, the occupant's head (including neck) is usually resting against the headrest. When the vehicle triggers emergency braking, if the occupant's body (torso) is not close enough to the seat, the distance between the occupant's head and the headrest will be relatively large, which will significantly increase the risk of whiplash injury. Summary of the Invention

[0004] One objective of this invention is to provide a vehicle occupant protection device to solve the problem in the prior art that when the emergency braking function is triggered, if the occupant's body (torso) is not close enough to the seat, the distance between the occupant's head and the headrest of the seat will be relatively large, and the occupant's neck whiplash injury will be significantly increased; a second objective is to provide a vehicle occupant protection method; a third objective is to provide an electronic device; and a fourth objective is to provide a vehicle.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A vehicle occupant protection device includes an occupant feature sensing module, a safety integrated control system, a seat belt retraction force control module, and an active seat belt actuator. The occupant feature perception module is used to acquire the physiological feature parameters of the occupant and the seat information of the seat in which the occupant is sitting. The safety integrated control system is used to acquire the physiological characteristic parameters, the seat information and the trigger signal, and when the vehicle emergency braking function is triggered according to the trigger signal, to determine the target retraction force according to the physiological characteristic parameters and the seat information, and to generate a seat belt retraction force control signal according to the target retraction force. The seatbelt retraction force control module is used to convert the seatbelt retraction force control signal output by the safety integrated control system into a seatbelt retraction force drive signal; The active seatbelt actuator is used to drive the active seatbelt of the seat where the occupant is located to retract or release according to the seatbelt retraction force drive signal, so as to adjust the retraction force of the active seatbelt of the seat where the occupant is located.

[0006] Furthermore, it also includes an active seatbelt torque sensor; The active seatbelt torque sensor is used to detect the actual retraction force of the active seatbelt and feed the actual retraction force back to the safety integrated control system; The safety integrated control system is used to adjust the seat belt retraction force control signal according to the deviation between the actual retraction force and the target retraction force.

[0007] Furthermore, the occupant feature sensing module is installed on the vehicle's seats and windshield; the safety integrated control system is installed within the vehicle's central control system; and the seatbelt retraction force control module, the active seatbelt actuator, and the active seatbelt torque sensor are installed within the vehicle's active seatbelt.

[0008] Furthermore, the occupant feature perception module includes at least a seat rail position sensor, a seat height position sensor, a seat back position sensor, a weight sensor, and an image recognition unit; the seat rail position sensor is disposed between the two side rails of the seat and is used to detect the fore-and-aft position of the seat; the seat height position sensor is disposed within the seat cushion and is used to detect the seat height position; the seat back position sensor is disposed within the seat back and is used to detect the seat back position; the weight sensor is disposed within the seat cushion and is used to detect the weight of the seat occupant; the image recognition unit is disposed above the windshield inside the vehicle and is used to acquire an image of the occupant's body shape.

[0009] Furthermore, the seatbelt retraction force control module includes a power amplifier and a signal conditioning circuit.

[0010] Furthermore, the active seatbelt actuator includes a drive motor, which drives the seatbelt retractor of the active seatbelt to drive the retraction or release of the active seatbelt.

[0011] Furthermore, the active seatbelt torque sensor is mounted on the output shaft of the drive motor.

[0012] A vehicle occupant protection method, applied to the aforementioned vehicle occupant protection device, the method comprising: Obtain the physiological characteristic parameters of the occupant and the seat information of the seat in which the occupant is sitting; When the vehicle's emergency braking function is triggered, a target retraction force is determined based on the physiological characteristic parameters and the seat information, and a seatbelt retraction force control signal is generated based on the target retraction force. The seatbelt retraction force control signal is converted into a seatbelt retraction force drive signal; The active seatbelt of the occupant's seat is retracted or released according to the seatbelt retraction force drive signal, so as to adjust the retraction force of the active seatbelt of the occupant's seat.

[0013] An electronic device includes: a processor; and a memory for storing processor-executable instructions. The processor is configured to execute the instructions to implement the vehicle occupant protection method described above.

[0014] A computer-readable storage medium, when the instructions in the storage medium are executed by the processor of a mobile terminal, enables the mobile terminal to perform the aforementioned vehicle occupant protection method.

[0015] A vehicle comprising the aforementioned electronic equipment.

[0016] The beneficial effects of this invention are: In this embodiment of the invention, the vehicle occupant protection device may include an occupant feature sensing module, a safety integrated control system, a seat belt retraction force control module, and an active seat belt actuator. The occupant feature sensing module is used to acquire the occupant's physiological feature parameters and the seat information of the seat the occupant is sitting in. The safety integrated control system is used to acquire the physiological feature parameters, seat information, and a trigger signal. When the vehicle's emergency braking function is triggered according to the trigger signal, it determines the target retraction force based on the physiological feature parameters and seat information, and generates a seat belt retraction force control signal based on the target retraction force. The seat belt retraction force control module is used to convert the seat belt retraction force control signal output by the safety integrated control system into a seat belt retraction force drive signal. The active seat belt actuator is used to drive the retraction or release of the active seat belt of the seat where the occupant is located according to the seat belt retraction force drive signal, thereby adjusting the retraction force of the active seat belt of the seat where the occupant is located. When the vehicle's emergency braking function is triggered, this invention can dynamically adjust the retraction force of the vehicle's active seat belts based on parameters such as the occupant's seat information and physiological characteristics to restrain the occupant in the seat. This allows the occupant's torso to be reasonably restrained on the seat, thereby indirectly reducing the distance between the occupant's head and the seat's headrest, achieving personalized optimal protection for the occupant and effectively reducing whiplash injuries to the neck. Furthermore, the vehicle occupant protection device has a simple structure, is easy to implement, and has good practicality and promotional value. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a vehicle occupant protection device provided in an embodiment of the present invention; Figure 2 This is a flowchart illustrating the steps of a vehicle occupant protection method provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of a vehicle occupant protection process provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0018] Reference numerals: 11-Windshield, 12-Image recognition unit, 13-Seat backrest, 14-Seat cushion, 15-Seat rail, 16-Seat backrest position sensor, 17-Seat height position sensor, 18-Seat rail position sensor, 19-Weight sensor, 20-Active seatbelt actuator, 21-Seatbelt torque sensor, 22-Seatbelt retraction force control module, 23-Safety integrated control system, 24-Occupant. Detailed Implementation

[0019] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0020] It should be noted that the embodiments of the present invention may involve the use of user data. In practical applications, user-specific personal data may be used within the scope permitted by applicable laws and regulations in the country of origin (e.g., with the user's explicit consent and proper notification to the user, etc.). It should also be noted that the illustrations provided in the following embodiments are merely schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex.

[0021] Reference Figure 1 The diagram illustrates a structural schematic of a vehicle occupant protection device provided in an embodiment of the present invention. The vehicle occupant protection device may include an occupant feature sensing module, a safety integrated control system 23, a seat belt retraction force control module 22, and an active seat belt actuator 20. The occupant feature perception module is used to acquire the physiological feature parameters of the occupant and the seat information of the seat in which the occupant is sitting. The safety integrated control system 23 is used to acquire the physiological characteristic parameters, the seat information and the trigger signal, and when the vehicle emergency braking function is triggered according to the trigger signal, to determine the target retraction force according to the physiological characteristic parameters and the seat information, and to generate a seat belt retraction force control signal according to the target retraction force. The seatbelt retraction force control module 22 is used to convert the seatbelt retraction force control signal output by the safety integrated control system 23 into a seatbelt retraction force drive signal; The active seatbelt actuator 20 is used to drive the active seatbelt of the seat where the occupant is located to retract or release according to the seatbelt retraction force drive signal, so as to adjust the retraction force of the active seatbelt of the seat where the occupant is located.

[0022] In practical implementation, with the development of automotive intelligent safety technology, AEB (Autonomous Emergency Braking) systems and active seat belts have gradually become standard equipment in vehicles. AEB systems can automatically implement emergency braking when a potential collision risk is detected, thereby significantly reducing collision risk and the severity of accidents. Active seat belts are based on pre-tensioned seat belts but incorporate a drive motor, enabling them to actively retract or release. Pre-tensioned seat belts are a type of automotive seat belt that differs from others in that they incorporate a pretensioner. This pretensioner can sense a certain impact during a vehicle collision and can be activated by a gas generator to instantly retract the seat belt.

[0023] In this embodiment of the invention, the occupant feature perception module may include multiple sensors, which may be installed in locations such as the vehicle's seats and windshield. These sensors can collect seat information and physiological parameters of the seat in which the occupant is sitting. The seat information may include at least the seat's fore-aft position, seat height position, and seat back position. The fore-aft position refers to the front and rear of the seat. The seat can be moved via the seat rail 15, allowing it to be moved to a position in front of or behind the original seat location. In some embodiments, the sensors of the occupant feature perception module may include a seat position sensor, a weight sensor 19, and an image recognition unit 12. The seat position sensor may include a seat rail position sensor 18, a seat height position sensor 17, and a seat back position sensor 16. These seat position sensors may be installed inside the seat to detect the seat information of the seat in which the occupant is sitting.

[0024] In some embodiments, the seat rail position sensor 18 can be installed between the seat rails 15 on both sides of the seat to detect the fore-and-aft position of the seat; the seat height position sensor 17 can be installed inside the seat cushion 14 to detect the seat height; and the seat back position sensor 16 can be installed inside the seat back 13 to detect the seat back position. The seat position sensors can be potentiometers or linear Hall effect sensors, etc., and obtain specific seat information by detecting the rotation angle of the seat adjustment motor.

[0025] Physiological characteristic parameters may include at least information such as the occupant's weight and height. In some embodiments, a weight sensor 19 may be disposed within the seat cushion 14. The weight sensor 19 may be a piezoelectric or resistive pressure sensor used to detect the weight of the occupant 24 sitting on the seat. Specifically, the weight sensor can calculate the occupant's weight by measuring the pressure exerted by the occupant 24 on the seat cushion 14. The image recognition unit 12 may be disposed above the windshield 11 inside the vehicle for acquiring images of the occupant's body shape. Then, the seat occupant's height is estimated by combining the preset image recognition algorithm and the detected seat occupant's weight. Specifically, the image recognition unit 12 may include a camera and an image processing chip. By capturing an image of the upper body of the occupant 24 (occupant body shape image), the seat occupant's height can be estimated and determined based on the occupant body shape image and the preset body shape and height relationship model. Specifically, the occupant body shape image, seat occupant's weight, and body shape and height relationship model can determine the occupant's geometric parameter model, and then the occupant's seat occupant height can be determined based on the geometric parameter model.

[0026] The Safety Integrated Control System (SMA, Situation Management Algorithm System) 23 can be installed within the vehicle's central control system. It can receive seat information and physiological characteristic parameters collected by the occupant feature perception module, and can also receive AEB trigger signals. When receiving an AEB trigger signal, it can determine the target retraction force based on a preset algorithm combined with physiological characteristic parameters and seat information, and output the corresponding seat belt retraction force control signal according to the target retraction force. The target retraction force is the force required to suppress the occupant's forward tilt. Specifically, when receiving an AEB trigger signal, the active seat belt restricts the occupant's torso based on the target retraction force determined by the seat information and physiological characteristic parameters. This allows the torso of occupants with different physiological characteristics to fit against the seat back, thereby indirectly limiting the distance between the occupant's head and the seat headrest, and avoiding excessive distance between the occupant's head and the seat headrest, which would significantly increase the risk of whiplash injury to the occupant.

[0027] Specifically, the safety integrated control system 23 receives seat position information and physiological characteristic parameters from the occupant feature perception module, and calculates the corresponding target retraction force through a preset algorithm. When AEB is triggered, it outputs the corresponding seat belt retraction force control signal to the seat belt retraction force control module 22.

[0028] In some embodiments, the target recovery force Ftarget is calculated using the following formula: Ftarget= k1*S1+k2*S2+k3*S3+k4*W+k5*H Where Ftarget is the target recovery force, S1 is the seat fore-aft position, S2 is the seat height position, S3 is the main backrest position, W is the occupant weight, H is the occupant height, and k1, k2, k3, k4 and k5 are empirical coefficients.

[0029] The seat belt retraction force control module 22 can be installed inside the active seat belt to convert the seat belt retraction force control signal output by the safety integrated control system 23 into a seat belt retraction force drive signal to drive the active seat belt actuator 20 to work.

[0030] The active seat belt actuator 20 can be installed inside the active seat belt to receive the seat belt retraction force drive signal output by the seat belt retraction force control module 22 and perform corresponding seat belt retraction force adjustment actions. For example, it can control the retraction (tightening the seat belt) or release (loosening the seat belt) action of the active seat belt, thereby adjusting the retraction force of the active seat belt in the occupant's seat so that the retraction force of the active seat belt reaches the target retraction force.

[0031] In this embodiment of the invention, the vehicle occupant protection device may include an occupant feature sensing module, a safety integrated control system, a seat belt retraction force control module, and an active seat belt actuator. The occupant feature sensing module is used to acquire the occupant's physiological feature parameters and the seat information of the seat the occupant is sitting in. The safety integrated control system is used to acquire the physiological feature parameters, seat information, and a trigger signal. When the vehicle's emergency braking function is triggered according to the trigger signal, it determines the target retraction force based on the physiological feature parameters and seat information, and generates a seat belt retraction force control signal based on the target retraction force. The seat belt retraction force control module is used to convert the seat belt retraction force control signal output by the safety integrated control system into a seat belt retraction force drive signal. The active seat belt actuator is used to drive the retraction or release of the active seat belt of the seat where the occupant is located according to the seat belt retraction force drive signal, thereby adjusting the retraction force of the active seat belt of the seat where the occupant is located. When the vehicle's emergency braking function is triggered, this invention can dynamically adjust the retraction force of the vehicle's active seat belts based on parameters such as the occupant's seat information and physiological characteristics to restrain the occupant in the seat. This allows the occupant's torso to be reasonably restrained on the seat, thereby indirectly reducing the distance between the occupant's head and the seat's headrest, achieving personalized optimal protection for the occupant and effectively reducing whiplash injuries to the neck. Furthermore, the vehicle occupant protection device has a simple structure, is easy to implement, and has good practicality and promotional value.

[0032] In some optional embodiments, the active seatbelt may have a height adjustment component. This component allows for adjustment of the seatbelt's height, enabling the target retraction force applied to the occupant to better adapt to the occupant's physiological parameters and the seat information, thus providing better protection. For example, if the occupant's height is determined to be relatively tall based on physiological parameters, the height adjustment component can automatically raise the seatbelt's anchor point. This allows the seatbelt's shoulder strap to cross the center of the occupant's shoulder and clavicle area (the ideal stress point for the seatbelt), rather than compressing the neck. Furthermore, upon receiving an AEB (Autonomous Emergency Braking) trigger signal, the active seatbelt applies the target retraction force determined based on physiological parameters and seat information, acting more directly and horizontally backward on the occupant's torso. This more effectively restrains the occupant against the seat back, better limiting forward torso lean and indirectly reducing the distance between the occupant's head and the headrest, thus more effectively reducing whiplash injuries to the neck.

[0033] In one embodiment of the present invention, the vehicle occupant protection device may further include an active seat belt torque sensor 21; The active seatbelt torque sensor 21 is used to detect the actual retraction force of the active seatbelt and feed the actual retraction force back to the safety integrated control system 23. The safety integrated control system 23 is used to adjust the seat belt retraction force control signal according to the deviation between the actual retraction force and the target retraction force.

[0034] In this embodiment of the invention, the active seat belt torque sensor 21 can detect the actual retraction force of the active seat belt in real time, and generate a corresponding feedback signal based on the actual retraction force to feed back to the safety integrated control system 23. The safety integrated control system 23 recalculates the target retraction force of the seat belt based on the feedback signal, the target retraction force, and the actual retraction force, and adjusts the seat belt retraction force control signal based on the recalculated target retraction force, thus forming a closed-loop control to realize real-time dynamic adjustment of the seat belt retraction force, so that the retraction force provided by the active seat belt always matches the current state of the occupant, providing the best neck protection effect for the occupant of the seat.

[0035] In one embodiment of the present invention, the seat belt retraction force control module 22 may include a power amplifier and a signal conditioning circuit. The signal conditioning circuit can preprocess the seat belt retraction force control signal output by the safety integrated control system 23, such as by level conversion and filtering, to make it meet the input requirements of the power amplifier. Then, the power amplifier converts the preprocessed seat belt retraction force control signal into a seat belt retraction force drive signal that can drive the active seat belt actuator. In this way, the active seat belt actuator 20 can be driven to work based on the seat belt retraction force drive signal.

[0036] In one embodiment of the present invention, the active seatbelt actuator includes a drive motor for driving the seatbelt retractor of the active seatbelt to drive the retraction or release of the active seatbelt. The drive motor of the active seatbelt actuator 20 can be a brushless DC motor or a servo motor, used to drive the seatbelt retractor to work. The drive motor receives a seatbelt retraction force drive signal output by the safety integrated control system 23 to adjust the retraction force of the seatbelt accordingly.

[0037] The vehicle occupant protection device of this invention can be integrated into a vehicle as part of active safety technology. For example, seat position sensors, weight sensors, image recognition units, and seatbelt retraction force actuators can be added to the vehicle's seat and seatbelt system to construct the vehicle occupant protection device. Furthermore, data communication between the modules in the vehicle occupant protection device can be achieved via the vehicle's CAN (Controller Area Network) bus or LIN (Local Interconnect Network) bus, thereby enabling adaptive control of the active seatbelt retraction force. In practical applications, after AEB (Autonomous Emergency Braking) is triggered, the vehicle occupant protection device can adjust the active seatbelt retraction force in real time for occupants with different seat information and physiological characteristics such as weight and height, providing personalized protection. This limits the extent of forward tilting of the occupant's upper torso and effectively reduces neck injuries during AEB whiplash.

[0038] Reference Figure 2 The diagram illustrates a flowchart of a vehicle occupant protection method provided in an embodiment of the present invention, applied to the aforementioned vehicle occupant protection device, and specifically includes the following steps: Step 201: Obtain the occupant's physiological characteristic parameters and the seat information of the seat in which the occupant is sitting; In a specific implementation, physiological characteristic parameters may include at least the weight and height of the seat occupant; seat information may include at least the fore-and-aft position, seat height position, and seat back position; and the seat occupant height is estimated and determined based on the occupant body shape image collected by the image recognition unit of the vehicle occupant protection device and a preset body shape and height relationship model.

[0039] Step 202: When the vehicle emergency braking function is triggered, the target retraction force is determined based on the physiological characteristic parameters and the seat information, and a seat belt retraction force control signal is generated based on the target retraction force; Step 203: Convert the seatbelt retraction force control signal into a seatbelt retraction force drive signal; Step 204: Drive the active seat belt of the seat where the occupant is located to retract or release according to the seat belt retraction force drive signal, so as to adjust the retraction force of the active seat belt of the seat where the occupant is located.

[0040] To enable those skilled in the art to better understand the embodiments of the present invention, specific examples are provided below. (Refer to...) Figure 3 This is a schematic diagram of a vehicle occupant protection process provided in an embodiment of the present invention. Seat position sensors 16, 17, and 18, weight sensor 19, and image recognition unit 12 acquire seat information and physiological characteristic parameters. Safety integrated control system 23 calculates the target recovery force. If an AEB signal is present, seat belt recovery force control module 22 converts the signal; otherwise, the process ends. Active seat belt actuator 20 drives the active seat belt. Active seat belt torque sensor 21 feeds back the actual recovery force to safety integrated control system 23 to recalculate the target recovery force.

[0041] Among them, the seat belt retraction force control module 22 converts the seat belt retraction force control signal corresponding to the target retraction force into a seat belt retraction force drive signal.

[0042] The implementation of occupant protection devices for specific whiplash injuries mainly includes the following steps: Step 1: The seat slide rail position sensor 18 is installed between the two seat slide rails 15 to detect the front and rear position of the seat. The seat height position sensor 17 can be installed in the seat pan 14 to detect the seat height position. The seat back position sensor 16 can be installed in the seat back 13 to detect the seat back position.

[0043] Step 2: A weight sensor 19 is installed inside the seat cushion 14. It can be a piezoelectric or resistive pressure sensor to detect the weight of the occupant 24. The weight sensor calculates the occupant's weight by measuring the pressure exerted by the occupant 24 on the seat cushion.

[0044] Step 3: The image recognition unit 12 is installed above the windshield 11 inside the vehicle to collect images of the occupant 2's body shape. The image recognition unit includes a camera and an image processing chip. By capturing images of the occupant 24's body shape and combining them with a preset body shape and height relationship model, the seat occupant height of occupant 24 is estimated.

[0045] Step 4: The safety integrated control system 23 receives seat information from the occupant feature perception module and physiological characteristic parameters such as occupant height and weight from occupant 24, and calculates the corresponding target seat belt retraction force using a preset algorithm. Upon AEB triggering, it outputs a corresponding seat belt retraction force control signal to the seat belt retraction force control module 22.

[0046] Step 5: The seat belt retraction force control module 22, including a power amplifier and a signal conditioning circuit, is used to convert the control signal output by the safety integrated control system 23 into a seat belt retraction force drive signal to drive the active seat belt actuator 20 to work.

[0047] Step 6: The drive motor of the active seatbelt actuator 20 can be a DC brushless motor or a servo motor, used to drive the seatbelt retractor. The drive motor receives the seatbelt retraction force drive signal output by the seatbelt retraction force control module and adjusts the seatbelt retraction force to achieve the target retraction force.

[0048] Step 7: The active seat belt torque sensor 21 of the active seat belt actuator 20 is installed on the output shaft of the drive motor to detect the actual retraction force of the seat belt in real time, and feeds back the feedback information of the detected actual retraction force to the safety integrated control system 23. The safety integrated control system 23 adjusts the seat belt retraction force control signal in real time to control the drive motor of the active seat belt actuator 20 to adjust the seat belt retraction force in real time, forming a closed-loop control.

[0049] By applying the embodiments of the present invention, by sensing seat information and physiological characteristic parameters such as the occupant's weight and height, the active seat belt retraction force can be adjusted in a personalized manner when AEB is triggered, so that the occupant's torso can be reasonably restrained on the seat, thereby indirectly reducing the distance between the occupant's head and the seat's headrest, providing the best neck protection effect for different occupants, effectively reducing the risk of whiplash injury, and the system has a simple structure, is easy to implement, and has good practicality and promotion value.

[0050] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0051] This invention also provides an electronic device, such as... Figure 4 As shown, it includes a processor 1001, a device interface 1002, a memory 1003, and a bus 1004; Memory 1003 is used to store computer programs; The processor 1001 executes the above steps when executing the program stored in the memory 1003.

[0052] The bus mentioned in the above terminal can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0053] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0054] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0055] The present invention also provides a storage medium that, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to perform the vehicle occupant protection method of the foregoing embodiments.

[0056] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0057] The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other equipment. The structure required to construct such a device is readily apparent from the above description. Furthermore, this invention is not directed to any particular programming language. It should be understood that the contents of the invention described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of the invention.

[0058] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0059] Similarly, it should be understood that, in order to simplify the invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0060] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0061] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the sorting device according to the present invention. The present invention can also be implemented as a device or apparatus program for performing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0062] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0063] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0066] It should be noted that the various data-related processes in the embodiments of this application are carried out in compliance with the relevant data protection laws and policies of the country where the location is located, and with the authorization granted by the owner of the corresponding device.

Claims

1. A vehicle occupant protection device, characterized in that, This includes an occupant characteristic perception module, a safety integrated control system, a seatbelt retraction force control module, and an active seatbelt actuator. The occupant feature perception module is used to acquire the physiological feature parameters of the occupant and the seat information of the seat in which the occupant is sitting. The safety integrated control system is used to acquire the physiological characteristic parameters, the seat information and the trigger signal, and when the vehicle emergency braking function is triggered according to the trigger signal, to determine the target retraction force according to the physiological characteristic parameters and the seat information, and to generate a seat belt retraction force control signal according to the target retraction force. The seatbelt retraction force control module is used to convert the seatbelt retraction force control signal output by the safety integrated control system into a seatbelt retraction force drive signal; The active seatbelt actuator is used to drive the active seatbelt of the seat where the occupant is located to retract or release according to the seatbelt retraction force drive signal, so as to adjust the retraction force of the active seatbelt of the seat where the occupant is located.

2. The vehicle occupant protection device according to claim 1, characterized in that, It also includes an active seatbelt torque sensor; The active seatbelt torque sensor is used to detect the actual retraction force of the active seatbelt and feed the actual retraction force back to the safety integrated control system; The safety integrated control system is used to adjust the seat belt retraction force control signal according to the deviation between the actual retraction force and the target retraction force.

3. The vehicle occupant protection device according to claim 1 or 2, characterized in that, The occupant feature sensing module is installed on the vehicle's seats and windshield; the safety integrated control system is installed within the vehicle's central control system; the seatbelt retraction force control module, the active seatbelt actuator, and the active seatbelt torque sensor are installed within the vehicle's active seatbelt.

4. The vehicle occupant protection device according to claim 3, characterized in that, The occupant feature perception module includes at least a seat rail position sensor, a seat height position sensor, a seat back position sensor, a weight sensor, and an image recognition unit. The seat rail position sensor is located between the two side rails of the seat and is used to detect the fore-and-aft position of the seat. The seat height position sensor is located inside the seat cushion and is used to detect the seat height position. The seat back position sensor is located inside the seat back and is used to detect the seat back position. The weight sensor is located inside the seat cushion and is used to detect the weight of the occupant. The image recognition unit is located above the windshield inside the vehicle and is used to capture images of the body shape of the occupants of the seats.

5. The vehicle occupant protection device according to claim 3, characterized in that, The seatbelt retraction force control module includes a power amplifier and a signal conditioning circuit.

6. The vehicle occupant protection device according to claim 3, characterized in that, The active seatbelt actuator includes a drive motor, which drives the seatbelt retractor of the active seatbelt to retract or release the active seatbelt.

7. The vehicle occupant protection device according to claim 6, characterized in that, The active seatbelt torque sensor is mounted on the output shaft of the drive motor.

8. A method for protecting vehicle occupants, characterized in that, The method, applied to the vehicle occupant protection device as described in any one of claims 1 to 4, comprises: Obtain the physiological characteristic parameters of the occupant and the seat information of the seat in which the occupant is sitting; When the vehicle's emergency braking function is triggered, a target retraction force is determined based on the physiological characteristic parameters and the seat information, and a seatbelt retraction force control signal is generated based on the target retraction force. The seatbelt retraction force control signal is converted into a seatbelt retraction force drive signal; The active seatbelt of the occupant's seat is retracted or released according to the seatbelt retraction force drive signal, so as to adjust the retraction force of the active seatbelt of the occupant's seat.

9. The method according to claim 8, characterized in that, The physiological characteristic parameters include at least the seat occupant's weight and height; the seat information includes at least the seat's fore-and-aft position, seat height position, and seat back position; the seat occupant's height is estimated and determined based on the occupant's body shape image collected by the image recognition unit of the vehicle occupant protection device and a preset body shape and height relationship model.

10. An electronic device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the instructions to implement the vehicle occupant protection method as described in any one of claims 8 to 9.

11. A computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the mobile terminal, the mobile terminal is able to perform the vehicle occupant protection method as described in any one of claims 8 to 9.

12. A vehicle, characterized in that, The vehicle includes the electronic equipment as described in claim 10.

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