A restraint system, seat belt adjustment method, apparatus, system, and vehicle

Abstract

The application discloses a restraint system, a safety belt adjusting method, device, system and vehicle, and belongs to the technical field of vehicle safety. A specific embodiment of the method comprises the following steps: when a vehicle is in a collision and an occupant does not correctly wear a safety belt, a moving direction of the safety belt is automatically controlled through cooperation between an adjusting device and a first traction component, and the length of a safety belt restraint section of the occupant is restrained, so that the length of the safety belt restraint section of the occupant can better restrain the occupant. The method overcomes the problem that the adjusted safety belt is too loose or too tight in the prior art, improves the effectiveness of restraining the occupant by adjusting the safety belt, and improves the vehicle safety of the occupant.

Description

Technical Field

[0001] This invention relates to the field of vehicle safety technology, and in particular to a restraint system, seat belt adjustment method, device, system, and vehicle. Background Technology

[0002] Passengers are required to wear seat belts while using a vehicle to protect themselves. If passengers do not wear seat belts correctly (e.g., the seat belt is worn too high, too low, or is misaligned), in the event of a collision, passengers can be released from the restraint of the seat belt, increasing the risk of injury and reducing vehicle safety.

[0003] Currently, the main method involves adjusting the seatbelt height by pulling it with an adjustment device when a vehicle collision is detected. However, in this method, the seatbelt section between the adjustment device and the retractor is directly linked to the seatbelt section between the adjustment device and the buckle. This results in the adjusted seatbelt being either too loose or too tight, affecting the effectiveness of restraining occupants and their safety. Summary of the Invention

[0004] In view of this, the present invention provides a restraint system, seat belt adjustment method, device, system, and vehicle. The adjustment device, in conjunction with a first traction component, can release the direct linkage between the seat belt restraint section and the seat belt traction section. This allows for adjustment of the seat belt restraint section length regardless of whether the retractor adjusts the seat belt's usable length. Specifically, in the event of a vehicle collision and if the occupant is not wearing a seat belt correctly, the adjustment device, in cooperation with the first traction component, automatically controls the seat belt's movement direction and restrains the occupant's seat belt restraint section. This ensures the seat belt restraint section effectively restrains the occupant, overcoming the problem of excessively loose or tight seat belts after adjustment in existing methods. This improves the effectiveness of restraining occupants through seat belt adjustment and enhances occupant safety.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides a restraint system comprising: a seat belt, an adjusting device for adjusting the seat belt, a first traction assembly, a retractor for controlling the retraction and extension of the seat belt, and a buckle for securing the seat belt, wherein the adjusting device and the first traction assembly are mounted on the B-pillar of a vehicle, and the first traction assembly is located below the adjusting device; the seat belt is movably connected to the adjusting device and the first traction assembly; the first traction assembly is used to release the direct linkage between the seat belt restraint section and the seat belt traction section, and cooperates with the adjusting device to restrain the seat belt restraint section, wherein the seat belt restraint section is located between the adjusting device and the buckle, and the seat belt traction section is located between the first traction assembly and the retractor.

[0007] Optionally, the adjustment device includes: an emergency actuator, a guide assembly, and a second traction assembly, wherein the emergency actuator is fixed in the guide assembly, and the second traction assembly is slidably connected to the guide assembly; the second traction assembly is movably connected to the seat belt; the guide assembly is fixed to the B-pillar of the vehicle and is used to define the movement path of the second traction assembly; in response to a collision, the emergency actuator drives the second traction assembly to move along the movement path defined by the guide assembly to adjust the position of the highest point of the seat belt.

[0008] Optionally, the first traction component is further configured to cooperate with the adjustment device to dynamically adjust the length of the seat belt restraint segment.

[0009] Optionally, the retractor includes a locking assembly, wherein the locking assembly is used to lock the usable length of the seat belt to a target length when the adjusting device adjusts the seat belt to move upward; the first traction assembly serves as a support point for the seat belt so that the adjusting device can adjust the seat belt after the locking assembly locks the usable length of the seat belt.

[0010] Optionally, the retractor is further configured to dynamically adjust the usable length of the seat belt when the adjusting device adjusts the seat belt to move downward, so that the length of the adjusted seat belt restraint section is a preset length.

[0011] Optionally, the first traction component is further configured to dynamically adjust the seat belt restraint section to the preset length by utilizing the indirect linkage between the seat belt restraint section and the seat belt traction section when the retractor dynamically adjusts the length of the seat belt.

[0012] Optionally, the guide component is provided with multiple positions corresponding to different heights, wherein the positions are used to lock the position of the second traction component.

[0013] In a second aspect, embodiments of the present invention provide a seat belt adjustment method based on the restraint system described in the first aspect, comprising: in response to a vehicle collision, determining the wearing position of the occupant's seat belt in the vehicle; analyzing whether the occupant is wearing the seat belt correctly based on the wearing position; and, if it is determined that the occupant is not wearing the seat belt correctly, constraining the seat belt restraint segment by means of the first traction component and the adjustment device, so as to restrain the occupant.

[0014] Optionally, determining the wearing position of the occupant's seat belt in the vehicle includes: acquiring an image containing the occupant and the seat belt worn by the occupant, and using an image recognition tool to identify from the image a first relative position between the seat belt and the occupant's neck or a second relative position between the seat belt and the occupant's shoulder.

[0015] Optionally, analyzing whether the occupant is wearing the seat belt correctly includes: calculating the distance between one or more edges of the seat belt and the occupant's neck or shoulder based on the first relative position or the second relative position; and analyzing whether the occupant is wearing the seat belt correctly based on the calculation result.

[0016] Optionally, the seat belt adjustment method further includes: one or more edges of the seat belt are provided with a preset color different from the main body of the seat belt; identifying the seat belt from the image includes: identifying the seat belt and the position of the seat belt edges based on the preset color of the seat belt edges.

[0017] Optionally, the seatbelt adjustment method further includes: sending a reminder message to the occupant when it is detected that no collision has occurred and when it is analyzed that the occupant is not wearing the seatbelt correctly.

[0018] Optionally, the seat belt adjustment method further includes: when the vehicle is in a normal state, controlling the second traction component in the adjustment device to be fixed in a preset original position in the guide component.

[0019] Optionally, the seat belt adjustment method further includes: acquiring historical characteristic information of the current occupant related to seat belt wearing; and controlling the adjustment device to move along the B-pillar of the vehicle according to the historical characteristic information, so as to drive the seat belt to move upward or downward, and adjust the current occupant to a suitable seat belt position.

[0020] Optionally, the seatbelt adjustment method further includes: when a calculation result indicates that the distance between the edge of the seatbelt and the occupant's neck is greater than a first distance threshold, or the distance between the edge of the seatbelt and the occupant's shoulder is less than a second distance threshold, generating a first instruction to instruct the seatbelt to move upward, and sending the first instruction to an emergency actuator in the adjustment device, so that the emergency actuator drives a second traction assembly to move the seatbelt upward; when a calculation result indicates that the distance between the edge of the seatbelt and the occupant's neck is less than the first distance threshold, or the distance between the edge of the seatbelt and the occupant's shoulder is greater than the second distance threshold, generating a second instruction to instruct the seatbelt to move downward, and sending the second instruction to an emergency actuator in the adjustment device, so that the emergency actuator drives a second traction assembly to move the seatbelt downward.

[0021] Optionally, the seatbelt adjustment method further includes: acquiring multiple historical data from vehicle collision tests; parsing the historical vehicle offset at the time of the collision and the gear position of the guide component in the adjustment device corresponding to the relative position of the seatbelt and the occupant at the time of the collision based on the historical data; constructing a mapping relationship between the gear position and the historical vehicle offset; and generating a first instruction to instruct the seatbelt to move upward or a second instruction to instruct the seatbelt to move downward based on the mapping relationship.

[0022] Optionally, constraining the seat belt constraint segment further includes: calculating the current usage length of the seat belt; generating a third instruction to adjust the seat belt based on the length of the seat belt traction segment, the adjustment direction of the adjustment device, and the preset target usage length of the seat belt corresponding to the adjustment direction, and sending the third instruction to the retractor so that the retractor adjusts the seat belt according to the third instruction.

[0023] Thirdly, embodiments of the present invention provide a seatbelt adjustment device, comprising: a position determination module and a position adjustment module, wherein:

[0024] The location determination module is used to determine the wearing position of the occupants' seat belts in response to a vehicle collision; and to analyze whether the occupants are wearing their seat belts correctly based on the wearing position.

[0025] The adjustment position module is used to restrain the seat belt restraint segment by cooperating with the first traction component and the adjustment device when it is determined that the occupant is not wearing the seat belt correctly, so as to restrain the occupant.

[0026] Optionally, the seat belt adjustment device is used to acquire an image containing the occupant and the seat belt worn by the occupant, and to use an image recognition tool to identify from the image a first relative position between the seat belt and the occupant's neck or a second relative position between the seat belt and the occupant's shoulder.

[0027] Optionally, the seat belt adjustment device is used to calculate the distance between one or more edges of the seat belt and the occupant's neck or shoulder based on the first relative position or the second relative position; and to analyze whether the occupant is wearing the seat belt correctly based on the calculation result.

[0028] Optionally, the seat belt adjustment device is further configured to identify the position of the seat belt and the edge of the seat belt based on a preset color of the edge of the seat belt.

[0029] Optionally, the seatbelt adjustment device is further configured to send a reminder message to the occupant when it is detected that no collision has occurred and when it is determined that the occupant is not wearing the seatbelt correctly.

[0030] Optionally, the seat belt adjustment device is further configured to control the second traction component in the adjustment device to be fixed in a preset original position in the guide component when the vehicle is in a normal state.

[0031] Optionally, the seat belt adjustment device is further configured to acquire the seat belt wearing history information of the current occupant; based on the seat belt wearing history information, control the adjustment device to move along the B-pillar of the vehicle to drive the seat belt to move upward or downward, thereby adjusting the current occupant to a suitable seat belt position.

[0032] Optionally, the seatbelt adjustment device is further configured to, when the calculation result indicates that the distance between the edge of the seatbelt and the occupant's neck is greater than a first distance threshold, or the distance between the edge of the seatbelt and the occupant's shoulder is less than a second distance threshold, generate a first instruction instructing the seatbelt to move upward, and send the first instruction to the emergency actuator in the adjustment device, so that the emergency actuator drives the second traction assembly to move the seatbelt upward; and when the calculation result indicates that the distance between the edge of the seatbelt and the occupant's neck is less than the first distance threshold, or the distance between the edge of the seatbelt and the occupant's shoulder is greater than the second distance threshold, generate a second instruction instructing the seatbelt to move downward, and send the second instruction to the emergency actuator in the adjustment device, so that the emergency actuator drives the second traction assembly to move the seatbelt downward.

[0033] Optionally, the seatbelt adjustment device is further configured to acquire multiple historical data from vehicle collision tests; parse the historical vehicle offset at the time of the collision and the gear position of the guide component in the adjustment device corresponding to the relative position of the seatbelt and the occupant at the time of the collision based on the historical data; construct a mapping relationship between the gear position and the historical vehicle offset; and generate a first instruction to instruct the seatbelt to move up a gear position or a second instruction to instruct the seatbelt to move down a gear position based on the mapping relationship.

[0034] Optionally, the seat belt adjustment device, used to constrain the seat belt restraint section, further includes: calculating the current usage length of the seat belt; generating a third instruction to adjust the seat belt based on the length of the seat belt traction section, the adjustment direction of the adjustment device, and a preset target usage length of the seat belt corresponding to the adjustment direction, and sending the third instruction to the retractor so that the retractor adjusts the seat belt according to the third instruction.

[0035] Fourthly, embodiments of the present invention provide a seat belt adjustment system, comprising: the restraint system described in the first aspect and the seat belt adjustment device described in the third aspect.

[0036] Fifthly, embodiments of the present invention provide a vehicle, including: the seat belt adjustment system described in the fourth aspect.

[0037] Sixthly, an embodiment of the present invention provides an in-vehicle electronic device, comprising:

[0038] One or more processors;

[0039] Storage device for storing one or more programs.

[0040] When the one or more programs are executed by the one or more processors, the one or more processors implement a seatbelt adjustment method as described in the above embodiments of the present invention.

[0041] In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program thereon for implementing seat belt adjustment, wherein the computer program, when executed by an on-board processor, implements a seat belt adjustment method according to an embodiment of the present invention.

[0042] The technical solution of the above invention has the following advantages or beneficial effects: By combining the adjusting device with the first traction component, the direct linkage between the seat belt restraint section and the seat belt traction section in the seat belt is released. This allows the adjustment of the seat belt restraint section length to be achieved regardless of whether the retractor adjusts the seat belt's length. In other words, when a vehicle collision occurs and the occupant is not wearing a seat belt correctly, the adjusting device and the first traction component work together to automatically control the direction of seat belt movement and restrain the length of the occupant's seat belt restraint section. This ensures that the seat belt restraint section effectively restrains the occupant, overcoming the problem of the adjusted seat belt being too loose or too tight in existing methods. This improves the effectiveness of restraining the occupant by adjusting the seat belt and enhances occupant safety. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the main components of a constraint system provided according to an embodiment of the present invention;

[0044] Figure 1A This is a schematic diagram of the components of a conventional seatbelt restraint system provided according to an embodiment of the present invention;

[0045] Figure 1B This is a schematic diagram of the main components of a constraint system for a traction component in an adjustment device according to an embodiment of the present invention, where the traction component is in a preset original position.

[0046] Figure 1C This is a schematic diagram of the main components of the constraint system at the upper position of the traction component in an adjustment device according to an embodiment of the present invention;

[0047] Figure 1D This is a schematic diagram of the main components of the restraint system at the lower end position of the traction component in an adjustment device according to an embodiment of the present invention;

[0048] Figure 2 This is a schematic diagram of the structure of a guide component provided according to an embodiment of the present invention;

[0049] Figure 3 This is a schematic diagram of the structure of a gear in a guide assembly according to an embodiment of the present invention;

[0050] Figure 4 This is a schematic diagram of the main process of a seat belt adjustment method provided by an embodiment of the present invention;

[0051] Figure 4A This is a schematic diagram illustrating how to determine the seatbelt wearing position according to an embodiment of the present invention;

[0052] Figure 5A schematic diagram of the main structure of a seat belt adjustment device according to an embodiment of the present invention;

[0053] Figure 6 This is an exemplary vehicle system architecture diagram to which embodiments of the present invention can be applied;

[0054] Figure 7 This is a schematic diagram of the structure of a computer system suitable for implementing embodiments of the present invention.

[0055] Explanation of reference numerals in the attached figures:

[0056] 10-Seat belt; 11-Seat belt restraint section; 12-Seat belt traction section; 20-Adjusting device; 221-Gear position; 22-Guide assembly; 23-Second traction assembly; 30-First traction assembly; 40-Retractor; 50-Lock. Detailed Implementation

[0057] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These details should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0058] It should be noted that, unless otherwise specified, the embodiments of the present invention and the technical features thereof can be combined with each other.

[0059] Furthermore, the terms "first," "second," and "third," etc., included in the terminology of this invention are used to distinguish similar objects and are not necessarily used to describe a specific number or order. It should be understood that such terms can be used interchangeably where appropriate; this is merely a distinguishing method used in the embodiments of this invention when describing objects with the same attributes.

[0060] Furthermore, the vehicles involved in the embodiments of the present invention may be internal combustion engine vehicles that use an engine as a power source, hybrid vehicles that use an engine and an electric motor as power sources, electric vehicles that use an electric motor as a power source, etc.

[0061] It should be noted that the collection, use, storage, sharing and transfer of user personal information involved in the technical solution of the present invention all comply with the provisions of relevant laws and regulations, and require notification to users and obtaining their consent or authorization. When applicable, user personal information is subjected to de-identification and / or anonymization and / or encryption technical processing.

[0062] First use Figure 1A The diagram illustrates existing seatbelt restraint systems, such as Figure 1A As shown, R1 is the height adjuster that moves the seat belt, R2 is the seat belt retractor, R3 is the seat belt buckle, and R4 is the B-pillar of the vehicle. R1 is located on R4 and can move up and down along R4. When the seat belt needs to be adjusted, the height and tightness of the seat belt are adjusted by moving R1. Figure 1A As shown, in the existing method, during the process of R1 pulling the seat belt, the seat belt segment a between R1 and R2 and the seat belt segment b between R1 and R3 are directly linked. That is, when R1 moves, the length and position of a and b change directly. Therefore, simply adjusting the height of R1 to adjust the seat belt may cause the seat belt to be too loose or too tight. Especially in the case of a vehicle collision, an overly loose or overly tight seat belt poses a risk of bodily injury to the occupant, thus affecting the effectiveness of restraining the occupant by adjusting the seat belt and the safety of the occupant.

[0063] In view of this, Figure 1 This is a schematic diagram of a constraint system according to an embodiment of the present invention. Figure 1 As shown, the restraint system mainly includes the following components: a seat belt 10, an adjusting device 20 for adjusting the seat belt 10, a first traction assembly 30, a retractor 40 for controlling the retraction and extension of the seat belt 10, and a buckle 50 for securing the seat belt 10. The adjusting device 20 and the first traction assembly 30 are mounted on the B-pillar of the vehicle. Figure 1 The first traction component 30 is located below the adjusting device 20; the seat belt 10 is movably connected to the adjusting device 20 and the first traction component 30; the first traction component 30 is used to release the direct linkage between the seat belt restraint section 11 and the seat belt traction section 12 in the seat belt 10, and cooperates with the adjusting device 20 to restrain the seat belt restraint section 11, wherein the seat belt restraint section 11 is located between the adjusting device 20 and the buckle 50, and the seat belt traction section 12 is located between the first traction component 30 and the retractor 40.

[0064] Specifically, with Figure 1A The existing seatbelt restraint system shown is different. Figure 1The diagram illustrates the main components of a restraint system according to an embodiment of the present invention. The restraint system includes a seatbelt 10, an adjusting device 20 for adjusting the seatbelt 10, a first traction assembly 30, a retractor 40 for controlling the retraction and extension of the seatbelt 10, and a buckle 50 for securing the seatbelt 10. The first traction assembly 30 can be a fixed guide ring, fixed to the B-pillar of the vehicle, and located below the adjusting device 20; this allows the seatbelt 10 to be movably connected to both the adjusting device 20 and the first traction assembly 30. For example, the seatbelt webbing passes through the first traction assembly and the adjusting device and can move, meaning the first traction assembly cooperates with the adjusting device. Furthermore, the first traction assembly 30 cooperates with the adjusting device 20 to dynamically adjust the length of the seatbelt restraint segment 11.

[0065] like Figure 1 As shown, the seat belt restraint section 11 is a section of seat belt located in front of the occupant's body to restrain the occupant's body; the seat belt traction section 12 is a section of seat belt between the first traction component 30 and the retractor 40; wherein, the length of the seat belt traction section is formed into a fixed length of seat belt by the action of the first traction component.

[0066] Furthermore, in an embodiment of the present invention, the adjusting device 20 includes: an emergency actuator, a guide assembly 22, and a second traction assembly 23; the second traction assembly 23 is slidably connected to the guide assembly 22. After receiving a seat belt adjustment command sent by the vehicle controller, the emergency actuator of the adjusting device can instantly drive the second traction assembly 23 to slide along the guide assembly 22, thereby moving the seat belt to different height positions. By adjusting the height position of the seat belt, the seat belt worn by the occupant can be corrected so that the seat belt moves to the correct position, achieving the purpose of protection and providing occupant safety.

[0067] The following is combined with Figure 1B , Figure 1C , Figure 1D The diagram illustrates the different situations that occur when adjusting the seatbelt to different highest points:

[0068] exist Figure 1B , Figure 1C , Figure 1D In the diagram, the seat belt retractor 40 is located at point A, the buckle 50 is located at point B, the second traction component 23 in the adjustment device is located at point C, and the first traction component 30 is located at point D.

[0069] like Figure 1BAs shown, the second traction component (point C) is located in the default preset original position in the adjustment device (for example, the preset original position is the middle position when the vehicle is in normal use and the seat belt does not need to be adjusted); Figure 1C As shown, the highest point adjusted to the second traction component 23 is the uppermost position (point C); as Figure 1D As shown, the highest point of the second traction component 23 is the lowest point (point C).

[0070] Specifically, in Figure 1B , Figure 1C , Figure 1D In the schematic diagram, the total length of the seat belt is a fixed length. The length of segment AB is the length that restrains the occupant's legs, and the length of segment AB can remain unchanged during seat belt adjustment. Segment AD is the seat belt traction segment; segment AC (CB+BA) is the seat belt restraint segment that restrains the occupant's body. During the movement of the seat belt, the first traction component 30 serves as a support point for the seat belt. That is, the first traction component is further used to cooperate with the adjustment device to dynamically adjust the length of the seat belt restraint segment AC. It can be understood that, in the embodiments of the present invention, the occupant is better restrained and the occupant's safety is improved by dynamically adjusting the length (and position) of segment AC.

[0071] exist Figure 1B , Figure 1C , Figure 1D In this embodiment, the total length of the seat belt is assumed to be 3830mm; the length that has been retracted by the retractor is assumed to be 1500mm; then the length of the unretracted seat belt is 2330mm; 2330mm is the length of AB+BC+CD+DA, which is also the length of the seat belt in use in this embodiment of the invention.

[0072] like Figure 1B In the case of the second traction assembly 23 in the default preset original position (middle position) in the adjustment device: assuming that the length of DA is a fixed value of 900mm, the length of CD is 30mm, and the length of CB+BA is 1400mm, that is, the length of the seat belt used to restrain the occupant is 1400mm (including the seat belt restraint section that restrains the occupant's body).

[0073] The following uses Figure 1C , Figure 1D Explanation:

[0074] Figure 1C A schematic diagram of the main components of the constraint system at the upper position of the traction component in an adjustment device according to an embodiment of the present invention;

[0075] like Figure 1CAs shown, after the second traction component 23 is adjusted to the uppermost position (point C), the lengths DA (900mm) and AB (400mm) remain unchanged, and the length retracted by the retractor (1500mm) remains unchanged; at this time, the length CD becomes 100mm, and the corresponding length CB+BA is 1330mm (obtained by the total length of the seat belt - the retracted length - AD - CD). Therefore, it can be seen that when the second traction component moves from its preset original position (e.g., the middle position of the guide component) to the highest position, the high point position of the seat belt changes, and the constraint length of the seat belt shortens (due to...). Figure 1B The 1400mm shown is changed to 1330mm), which improves occupant restraint while adjusting the seat belt position; especially in the event of a vehicle collision, it significantly enhances occupant safety. Specifically, the retractor can lock the seat belt during position adjustment using a locking assembly (such as a mechanical locking device or a sensor device to lock the seat belt retract length), ensuring that the usable length of the seat belt (i.e., AB+BC+CD+DA) is the target length (e.g., 2330mm); by locking the target length, the length of CB+BA is changed from... Figure 1B The 1400mm shown is changed to 1330mm, meaning the length of the seatbelt restraint section that restrains the occupant's body is shortened. Specifically, the retractor includes a locking assembly, wherein the locking assembly is used to lock the seatbelt's usable length to a target length when the adjusting device adjusts the seatbelt to move upwards; the first traction assembly serves as a support point for the seatbelt, enabling the adjusting device to adjust the seatbelt after the locking assembly locks the seatbelt's usable length.

[0076] Figure 1D A schematic diagram of the main components of a restraint system at the lower end position of a traction component in an adjustment device according to an embodiment of the present invention;

[0077] like Figure 1D As shown, after the second traction component 23 is adjusted to its lowest position (point C), the lengths DA (900mm) and AB (400mm) remain unchanged. At this time, the length of CD is... Figure 1BThe 30mm shown is changed to 20mm. To maintain the CB+BA length at 1330mm (obtained by subtracting the current retracted length of 1500mm from the total seatbelt length of 3830mm from AD-CD), an 80mm length of seatbelt needs to be retracted using a retractor. When driving the retractor to retract the calculated length (e.g., 80mm), the retractor's retraction action can be controlled by mechanical linkage or by sending a retraction command through the vehicle system. This dynamically adjusts the usable length of the seatbelt (i.e., the length of AB+BC+CD+DA). Specifically, the retractor is further used to dynamically adjust the usable length of the seatbelt when the adjusting device adjusts the seatbelt to move downwards, so that the adjusted length of the seatbelt restraint section is the preset length. Where the CB+BA length is 1330mm and the AB length is 400mm, then CB is the preset length of 930mm, which is the adjusted length of the seatbelt restraint section.

[0078] Furthermore, the first traction component 30 is further used to dynamically adjust the seat belt restraint section 11 to the preset length by utilizing the indirect linkage between the seat belt restraint section 11 and the seat belt traction section 12 when the retractor 40 dynamically adjusts the length of the seat belt 10. It can be seen that when the adjusting device adjusts the seat belt to move downwards, although the retractor dynamically adjusts the length of the seat belt, the first traction component enables indirect linkage between the seat belt restraint section and the seat belt traction section (replacing the direct linkage in the prior art), overcoming the problem of the seat belt being too tight or too loose caused by direct linkage between the seat belt restraint section and the seat belt traction section in the prior art. Thus, by moving the second traction component downwards from the preset original position to the lowest position, the seat belt position changes, improving the restraint on the occupant while adjusting the seat belt position, especially in the event of a vehicle collision, significantly improving the occupant's safety.

[0079] Through Figure 1B , Figure 1C , Figure 1D Through comparison and description, it can be seen that the embodiments of the present invention overcome the limitations of the prior art by combining the first traction component with the adjustment device. Figure 1A The problem of the seat belt being too loose or too tight due to the direct linkage between sections a and b in the seat belt 10 is addressed by releasing the direct linkage between the seat belt restraint section 11 and the seat belt traction section 12. Specifically, the first traction assembly 30 is used to release the direct linkage between the seat belt restraint section 11 and the seat belt traction section 12 in the seat belt 10, and cooperates with the adjustment device 20 to restrain the seat belt restraint section 11.

[0080] Furthermore, in an embodiment of the present invention, the adjusting device 20 includes: an emergency actuator, a guide assembly 22, and a second traction assembly 23.

[0081] Figure 2 A schematic diagram of a guide component provided in an embodiment of the present invention is shown; as follows: Figure 2 As shown, the second traction component 23 is slidably connected to the guide component 22; for example, the guide component is a device with a slide rail, allowing the second traction component (e.g., a slider) to move up and down along the slide rail (i.e., the second traction component moves according to the movement path defined by the guide component 22); and the second traction component 23 is movably connected to the seat belt 10, so that when the second traction component 23 moves, it drives the seat belt 10 to move. It is understood that the second traction component can utilize its included annular component, through which the seat belt passes, to movably connect the second traction component to the seat belt.

[0082] Furthermore, the guide component 22 can be fixed to the B-pillar of the vehicle to fix the position of the component itself and the second traction component, and to define the movement path of the second traction component 23.

[0083] Furthermore, embodiments of the present invention provide an emergency actuator, which can be fixed in the guide assembly 22. For example, the emergency actuator can be installed in the middle position of the guide assembly 22, that is, in the same position as the preset original position of the second traction assembly; so that when a vehicle collision is detected and the occupant is not wearing a seat belt correctly, the emergency actuator can be used to drive the second traction assembly to move upward or downward. That is, in response to the vehicle collision, the emergency actuator drives the second traction assembly 23 to move along the movement path defined by the guide assembly 22 to adjust the position of the highest point of the seat belt 10, wherein the position of the highest point can be... Figure 1C Point C shown could also be Figure 1D Point C shown could also be the location of a specific gear in the guide assembly. In an embodiment of the invention, the emergency actuator can be a gunpowder detonation device. The gunpowder detonation technology can drive the second traction assembly to the target position instantly. In the event of a vehicle collision, i.e., when a high speed is required for the second traction assembly, this invention utilizes a gunpowder detonation device as an emergency actuator, significantly improving the efficiency of seatbelt adjustment and thus enhancing the restraint effect of the seatbelt on the occupants.

[0084] In this embodiment of the invention, Figure 1B , Figure 1C , Figure 1DThe straight line of the B-pillar in the diagram is for illustrative purposes only. According to vehicle design, the B-pillar is usually curved. Therefore, when the second traction component moves along the path defined by the guide component, its path may not be perpendicular to the horizontal plane.

[0085] Figure 3 This diagram illustrates the structure of a gear position in a guide assembly according to an embodiment of the present invention.

[0086] like Figure 3 As shown, the guide component 22 is provided with a plurality of stops 221 corresponding to different heights, wherein the stops 221 are used to lock the position of the second traction component 23.

[0087] Specifically, in this embodiment of the invention, the guide assembly 22 may have multiple stops 221 in its slide rail. The distance between the stops can be set according to the occupant's seatbelt wearing position, for example, it can be set to 50mm. These stops allow the second traction assembly to be positioned as a stop (i.e., locked) point as it moves along the guide assembly's slide rail path. This further improves the accuracy and precision of controlling the seatbelt position or length.

[0088] Figure 4 This is a schematic diagram illustrating the main steps of a seatbelt adjustment method implemented using a restraint system according to an embodiment of the present invention. Figure 4 As shown, the seatbelt adjustment method mainly includes the following steps:

[0089] Step S401: In response to a vehicle collision, determine the position of the occupant seat belts in the vehicle.

[0090] Specifically, in embodiments of the present invention, the correctness of whether an occupant is wearing a seatbelt is determined by detecting the position of the seatbelt in the vehicle. The method for detecting the position of the seatbelt includes, for example, acquiring images or videos of the occupant and the seatbelt worn by the occupant using an in-vehicle camera, and further using an image recognition tool to identify the relative position of the seatbelt to the occupant's neck or shoulder based on the images or videos. That is, acquiring an image containing the occupant and the seatbelt worn by the occupant, and using an image recognition tool to identify the first relative position of the seatbelt to the occupant's neck or the second relative position of the seatbelt to the occupant's shoulder from the image.

[0091] Figure 4A The diagram illustrates one embodiment of the present invention for determining the wearing position of the occupant's seatbelt, as shown below. Figure 4AAs shown, N represents the occupant's neck, S represents the seatbelt, L1 represents the distance between the seatbelt and the occupant's neck, and L2 represents the distance between the seatbelt and the occupant's shoulder. L1 or L2 can be a distance calculated based on a first relative position of the seatbelt and the occupant's neck identified in the image, or a distance calculated based on a second relative position of the seatbelt and the occupant's shoulder. The seatbelt or occupant's neck (or shoulder) in the image can be identified using image recognition tools (e.g., image recognition neural network models such as LeNet, AlexNet, VGG, GoogLeNet, and ResNet); this invention does not limit the specific image recognition tools used.

[0092] Preferably, embodiments of the present invention include a seat belt with one or more edges having a preset color different from the main body of the seat belt; that is, identifying the seat belt from the image includes: identifying the seat belt and the position of the seat belt edges based on the preset color of the seat belt edges. By setting one or more edges of the seat belt to a preset color different from the main body of the seat belt (e.g., a bright color or other eye-catching color), the accuracy and efficiency of identifying the seat belt from the image are improved, and the computational resources consumed by image recognition are saved.

[0093] Step S402: Analyze whether the occupant is wearing the seat belt correctly based on the wearing position.

[0094] Specifically, based on the first relative position or the second relative position, the distance between one or more edges of the seat belt and the occupant's neck or shoulder is calculated; based on the calculation result, it is analyzed whether the occupant is wearing the seat belt correctly. That is, based on the wearing position, it is analyzed whether the occupant is wearing the seat belt correctly.

[0095] Still with Figure 4A The diagram illustrates this for example: L1 represents the distance between the left edge of the seatbelt and the occupant's neck; L2 represents the distance between the right edge of the seatbelt and the occupant's shoulder; assuming L1 is calculated to be 20mm; L2 is also calculated to be 20mm. Figure 4A In the image, the seatbelt is shown to be worn correctly.

[0096] In embodiments of the present invention, by calculating the distance between one or more edges of the seat belt and the occupant's neck or shoulder, it can be determined whether the seat belt is too close to the occupant's neck (i.e., too far from the occupant's shoulder) or too far from the occupant's neck (i.e., too close to the occupant's shoulder). The determination method can be to compare the distance between the calculated result indicating the seat belt edge and the occupant's neck with a first distance threshold (e.g., the first distance threshold is 20mm), or to compare the distance between the seat belt edge and the occupant's shoulder with a second distance threshold (e.g., the second distance threshold is 20mm). The comparison result can indicate whether the seat belt is too close to the occupant's neck (i.e., too far from the occupant's shoulder) or too far from the occupant's neck (i.e., too close to the occupant's shoulder), etc., thereby further judging and analyzing whether the occupant is wearing the seat belt correctly based on whether it is too close or too far.

[0097] Preferably, in an embodiment of the present invention, if it is determined that an occupant is not wearing a seatbelt correctly during normal vehicle operation, the occupant can be prompted using the vehicle system's display or voice (e.g., by sending a prompt message asking the occupant to wear a seatbelt correctly); that is, if no collision is detected and it is determined that the occupant is not wearing a seatbelt correctly, a prompt message is sent to the occupant.

[0098] Step S403: If it is determined that the occupant is not wearing the seat belt correctly, the first traction component and the adjustment device cooperate to restrain the seat belt restraint section to restrain the occupant.

[0099] Specifically, in response to a vehicle collision via steps S401 to S402, and after analysis indicating that the occupants in the vehicle are not wearing seat belts correctly, the first traction component, in cooperation with the adjustment device, constrains the seat belt restraint segment to restrain the occupants.

[0100] Furthermore, the method for controlling the cooperation between the first traction component and the adjustment device includes:

[0101] 1) When the vehicle is in normal condition:

[0102] The second traction component in the adjustment device is fixed to a preset initial position in the guide component. For example, the preset initial position is the middle position (or middle gear) of the guide component, so that the second traction component can move up or down based on the preset initial position.

[0103] Furthermore, embodiments of the present invention can determine the initial fixed position of the adjustment device for the occupant based on the occupant's historical characteristics related to seat belt wearing (e.g., height, weight, the occupant's historical seat belt wearing position, etc.), thereby determining a suitable seat belt position or seat belt restraint section length for the occupant. After determining the target position, the adjustment device can be driven to move along the vehicle's B-pillar to move the seat belt upwards or downwards, adjusting the occupant to a suitable seat belt position. That is, the historical characteristics related to seat belt wearing of the current occupant are obtained; based on the historical characteristics, the adjustment device is controlled to move along the vehicle's B-pillar to move the seat belt upwards or downwards, adjusting the current occupant to a suitable seat belt position. Therefore, by moving the adjustment device, the seat belt position and height can be determined and fixed for different occupants. Furthermore, when a vehicle collision is detected and it is determined that the occupant is not wearing the seat belt correctly, the second traction component in the adjustment device, which is set in a fixed position, further drives the seat belt to move in the guide component to further adjust the seat belt. This improves the precision and accuracy of seat belt adjustment and further enhances the restraint effect of the seat belt on the occupant.

[0104] 2) Upon detecting a vehicle collision, the direction of movement of the seatbelt driven by the second traction component is determined to be upward or downward based on whether the occupants are wearing seatbelts; the specific control method is as follows:

[0105] For the case of moving upwards:

[0106] When the calculation results indicate that the distance between the seat belt edge and the occupant's neck is greater than a first distance threshold, or the distance between the seat belt edge and the occupant's shoulder is less than a second distance threshold, a first instruction to move the seat belt upward is generated and sent to the emergency actuator in the adjustment device, so that the emergency actuator drives the second traction assembly to move the seat belt upward. Specifically, when the calculation results indicate that the seat belt is too far from the occupant's neck (i.e., the distance between the seat belt edge and the occupant's neck is less than the first distance threshold, or the distance between the seat belt edge and the occupant's shoulder is greater than the second distance threshold), it is determined that the seat belt needs to be moved upward. Then, the vehicle control system generates a first instruction to move the seat belt upward and sends the first instruction to the emergency actuator in the adjustment device, so that the emergency actuator drives the second traction assembly to move the seat belt upward.

[0107] Similarly, for the case of moving downwards:

[0108] Specifically, when the calculation results indicate that the seat belt is too close to the occupant's neck (i.e., the distance between the edge of the seat belt and the occupant's neck is less than a first distance threshold, or the distance between the edge of the seat belt and the occupant's shoulder is greater than a second distance threshold), it is determined that the seat belt needs to be moved downwards; that is, when the calculation results indicate that the distance between the edge of the seat belt and the occupant's neck is less than the first distance threshold, or the distance between the edge of the seat belt and the occupant's shoulder is greater than the second distance threshold, a second instruction instructing the seat belt to move downwards is generated, and the second instruction is sent to the emergency actuator in the adjustment device, so that the emergency actuator drives the second traction assembly to move the seat belt downwards.

[0109] Furthermore, when determining the direction of movement of the second traction component, it also includes determining the displacement in that direction (i.e., the number of gears moved), such as: moving up 1 gear, moving up 2 gears, moving down 1 gear, etc.

[0110] In an embodiment of the present invention, the method for determining the target gear position included in the first instruction or the second instruction is as follows: acquiring multiple historical data of vehicle collision tests; parsing the historical vehicle offset at the time of the vehicle collision and the gear position of the guide component in the adjustment device corresponding to the relative position of the seat belt and the occupant at the time of the vehicle collision based on the historical data; constructing a mapping relationship between the gear position and the historical vehicle offset; and generating a first instruction instructing the seat belt to move up a gear position or a second instruction instructing the seat belt to move down a gear position based on the mapping relationship. Specifically, historical data can be obtained from vehicle crash test data. This historical data can include multiple crash-related indicators, such as the vehicle's offset during a collision. Different collision points can be used during vehicle crash tests to generate different offset collision angles. For example, assuming the offset for a frontal collision is 0%, the offset for a left frontal collision can be set to 25% or 50%. Based on the offset and the expected position of the seatbelt protecting the occupants at that offset, the mapping relationship between the gear and the historical vehicle offset can be determined, and this mapping relationship can be constructed and stored. For example, when the left offset is 25% and the movement direction is upward, the gear is 1st gear; when the left offset is 50% and the movement direction is downward, the gear is 2nd gear, etc. This invention does not limit the specific direction and value of the offset or the specific value of the gear.

[0111] Furthermore, the method for obtaining the vehicle offset during a collision can be achieved using acceleration sensors located at different positions within the vehicle. That is, the response to a vehicle collision includes: using one or more acceleration sensors contained in the vehicle to detect the vehicle offset during a collision.

[0112] Furthermore, after determining the vehicle offset, based on the mapping relationship between the gear position and historical vehicle offset, a gear position matching the vehicle offset is found. Based on the determined movement direction of the second traction component driving the seat belt, the preset original position of the second traction component and the gear position are superimposed to determine the target gear position that the second traction component moves to in the guide component along the movement direction. For example, if the preset original position is the middle and the first instruction includes the information "move up 2 gears", then the emergency drive can be used to drive the second traction component to move instantly to the target gear position in the guide component, thereby instantly moving the seat belt to the target position indicated by the gear position, so as to better restrain the occupant by adjusting the seat belt.

[0113] Furthermore, the method of constraining the seat belt constraint section further includes: calculating the current usage length of the seat belt; generating a third instruction to adjust the seat belt based on the length of the seat belt traction section, the adjustment direction of the adjustment device, and the preset target usage length of the seat belt corresponding to the adjustment direction, and sending the third instruction to the retractor so that the retractor adjusts the seat belt according to the third instruction.

[0114] Specifically, still in Figure 1C , Figure 1D For example, in the schematic diagram, Figure 1C As shown, the second traction component is adjusted to the uppermost position; as Figure 1D As shown, the second traction component is adjusted to the lowest position.

[0115] like Figure 1C When the adjustment direction is upward: Calculate the current usage length of the seat belt. The current usage length is the total length of the seat belt minus the length retracted by the retractor. Assume the total length of the seat belt is 3830mm; the length retracted by the retractor is 1500mm; then (3830-1500)=1330, that is, the length of the seat belt that is not retracted is 2330mm; 2330mm is the current usage length.

[0116] Furthermore, with the adjustment direction upward, assuming the preset target length is 2330mm, after the second traction component (point C) moves upward to the top position, the lengths DA (900mm) and AB (400mm) remain unchanged, and the retracted length (1500mm) remains unchanged. At this time, CD changes from 30mm (the length between CD when the second traction component is in the preset original position) to 100mm. Correspondingly, the length of CB+BA is 1330mm (total seat belt length - retracted length - AD - CD, i.e., 3830 - 1500 - 900 - 100). At this time, a third instruction to adjust the seat belt is generated, which can instruct the retractor to lock the current retracted length and send the third instruction to the retractor. The third instruction controls the measuring tape to lock the seat belt using the locking component, i.e., not to perform a retracting operation to fix the current used length of the seat belt, so that the length of CB+BA is 1330mm.

[0117] like Figure 1D When the adjustment direction is downward: Calculate the current usage length of the seat belt. The current usage length is obtained by subtracting the length retracted by the retractor from the total length of the seat belt. Assume that the total length of the seat belt is 3830mm; the length retracted by the retractor is 1500mm; and the length of the unretracted seat belt (i.e., the current usage length) is 2330mm.

[0118] With the adjustment direction downwards, assuming the second traction component (point C) is adjusted to its lowest position, the lengths DA (900mm) and AB (400mm) remain unchanged. Meanwhile, CD changes from 30mm (the length between CD when the second traction component is in its preset original position) to 20mm. Correspondingly, to maintain the CB+BA length at 1330mm, i.e., to maintain the preset target usable length at 2330mm, the required length of the seatbelt to be retracted is 1580mm. This 1580mm is calculated as 3830 - 900 - 20 - 1330 = 1580. Since the retractor has already retracted 1500mm, it is necessary to further retract 80mm of the seatbelt using the retractor. Therefore, a third instruction is generated to instruct the retractor to retract 80mm of the seatbelt, and this third instruction is sent to the retractor. The third instruction controls the retractor to retract 80mm of the seatbelt, making the CB+BA length 1330mm. The winding action of the retractor can be controlled by mechanical linkage based on a third command, or the winding action of the retractor can be controlled by sending a winding command (i.e., a third command) through the vehicle system.

[0119] Therefore, the seat belt adjustment method provided by the embodiments of the present invention can ensure that the length of the seat belt restraining the occupant's body remains at a preset restraint length that can achieve the restraint effect when the seat belt is adjusted to different positions (for example, the restraint length is obtained through multiple experiments and data analysis, and the length value is, for example, CB+BA=1330mm), thereby improving the restraint effect of adjusting the seat belt on the occupant and thus improving the occupant's vehicle safety.

[0120] Figure 5 A schematic diagram of a seatbelt adjustment device 500 to which embodiments of the present invention can be applied is shown. It includes a position determination module 501 and an adjustment position module 502, wherein:

[0121] The position determination module 501 is used to determine the wearing position of the occupant's seat belt in the vehicle in response to a vehicle collision; and to analyze whether the occupant is wearing the seat belt correctly based on the wearing position.

[0122] The adjustment position module 502 is used to restrain the seat belt restraint segment by cooperating with the first traction component and the adjustment device when it is determined that the occupant is not wearing the seat belt correctly, so as to restrain the occupant.

[0123] Optionally, the seatbelt adjustment device 500 may also include an image recognition tool;

[0124] Optionally, the position determination module 501 is used to acquire an image containing the occupant and the seat belt worn by the occupant, and the image recognition tool is used to identify from the image a first relative position between the seat belt and the occupant's neck or a second relative position between the seat belt and the occupant's shoulder.

[0125] Optionally, the position determination module 501 is used to calculate the distance between one or more edges of the seat belt and the occupant's neck or shoulder based on the first relative position or the second relative position; and to analyze whether the occupant is wearing the seat belt correctly based on the calculation result.

[0126] Optionally, the image recognition tool is further used to identify the seat belt and the position of the seat belt edge based on a preset color of the edge of the seat belt.

[0127] Optionally, the location determination module 501 is further configured to send a prompt message to the occupant if it detects that no collision has occurred and analyzes that the occupant is not wearing a seat belt correctly.

[0128] Optionally, the adjustment position module 502 is further configured to control the second traction component in the adjustment device to be fixed in a preset original position in the guide component when the vehicle is in a normal state.

[0129] Optionally, the adjustment position module 502 is further configured to acquire the seat belt wearing history feature information of the current occupant; and according to the seat belt wearing history feature information, control the adjustment device to move along the B-pillar of the vehicle to drive the seat belt to move upward or downward, so as to adjust the current occupant to a suitable seat belt position.

[0130] Optionally, the adjustment position module 502 is further configured to generate a first instruction instructing the seat belt to move upward when the calculation result indicates that the distance between the edge of the seat belt and the occupant's neck is greater than a first distance threshold, or the distance between the edge of the seat belt and the occupant's shoulder is less than a second distance threshold, and send the first instruction to the emergency actuator in the adjustment device so that the emergency actuator drives the second traction assembly to move the seat belt upward; and to generate a second instruction instructing the seat belt to move downward when the calculation result indicates that the distance between the edge of the seat belt and the occupant's neck is less than the first distance threshold, or the distance between the edge of the seat belt and the occupant's shoulder is greater than the second distance threshold, and send the second instruction to the emergency actuator in the adjustment device so that the emergency actuator drives the second traction assembly to move the seat belt downward.

[0131] Optionally, the adjustment position module 502 is further configured to acquire multiple historical data from vehicle collision tests; parse the historical vehicle offset at the time of the collision and the gear position of the guide component in the adjustment device corresponding to the relative position of the seat belt and the occupant at the time of the collision based on the historical data; construct a mapping relationship between the gear position and the historical vehicle offset; and generate a first instruction to instruct the seat belt to move up a gear or a second instruction to instruct the seat belt to move down a gear based on the mapping relationship.

[0132] Optionally, the adjustment position module 502, used to constrain the seat belt constraint segment, further includes: calculating the current usage length of the seat belt; generating a third instruction to adjust the seat belt based on the length of the seat belt traction segment, the adjustment direction of the adjustment device, and the preset target usage length of the seat belt corresponding to the adjustment direction, and sending the third instruction to the retractor so that the retractor adjusts the seat belt according to the third instruction.

[0133] Figure 6 An exemplary vehicle system architecture 600 to which the seatbelt adjustment method or seatbelt adjustment device of embodiments of the present invention can be applied is shown.

[0134] like Figure 6 As shown, the vehicle system architecture 600 may include various systems, such as a seatbelt adjustment device 601, a powertrain 602, a sensor system 603, a control system 604, one or more peripheral devices 605, a power supply 606, a computer system 607, a user interface 608, and a seatbelt adjustment system 609. Optionally, the vehicle system architecture 600 may include more or fewer systems, and each system may include multiple components. Furthermore, each system and component of the vehicle system architecture 600 may be interconnected via wired or wireless means.

[0135] The vehicle system architecture 600 includes a seatbelt adjustment device 601, which can be used to determine the wearing position of the occupant's seatbelt in response to a vehicle collision; analyze whether the occupant is wearing the seatbelt correctly based on the wearing position; and if the analysis shows that the occupant is not wearing the seatbelt correctly, the first traction component cooperates with the adjustment device to constrain the seatbelt restraint segment to restrain the occupant.

[0136] The powertrain 602 may include components that provide power to the vehicle. For example, the powertrain 602 may include an engine, an energy source, a transmission, wheels, tires, etc. The engine may be an internal combustion engine, an electric motor, an air-compressed engine, or other combinations of engines, such as a hybrid engine consisting of a gasoline engine and an electric motor, or a hybrid engine consisting of an internal combustion engine and an air-compressed engine. The engine converts the energy source into mechanical energy to supply the transmission. Examples of energy sources may include gasoline, diesel, other petroleum-based fuels, propane, other compressed gas-based fuels, ethanol, solar panels, batteries, and other electrical sources. The energy source may also provide energy to other systems in the vehicle. Furthermore, the transmission may include a gearbox, a differential, a drive shaft, and a clutch, etc.

[0137] Sensor system 603 may include various types of sensors inside the vehicle. Sensor system 603 may also include sensors that sense the vehicle's surrounding environment. Examples include a positioning system (which may be a Global Positioning System (GPS) system, a BeiDou system, or another positioning system), radar, a laser rangefinder, an inertial measurement unit (IMU), and cameras. The positioning system can be used to determine the vehicle's geographical location. The IMU is used to sense changes in the vehicle's position and orientation based on inertial acceleration. In one embodiment, the IMU may be a combination of an accelerometer and a gyroscope. Radar can use radio signals to sense objects in the vehicle's surrounding environment. In some embodiments, in addition to sensing objects and detecting collisions, radar can also be used to sense the speed and / or direction of travel of objects. To detect environmental information, objects, etc., located in front of, behind, or to the sides of the vehicle, radar, cameras, etc., may be configured at appropriate locations outside the vehicle. For example, to acquire an image of the area in front of the vehicle, a camera may be configured inside the vehicle's interior close to the windshield. Alternatively, a camera may be configured around the front bumper or radiator grille. Or, around the left and right rearview mirrors. For example, to acquire images of the area behind the vehicle, a camera can be positioned inside the vehicle's interior, close to the rear window. Alternatively, the camera can be positioned around the rear bumper, trunk, or tailgate. To acquire images of the sides of the vehicle, a camera can be positioned inside the vehicle's interior, close to at least one of the side windows. Alternatively, the camera can be positioned around the side mirrors, fenders, or doors. A laser rangefinder uses lasers to sense objects in the vehicle's environment. Cameras can be used to capture multiple images of the vehicle's surroundings. Cameras can be still or video cameras.

[0138] The sensor system 603 can obtain vehicle location and vehicle driving status, etc.

[0139] The control system 604 may include software systems for adjusting the seat belts, and may also include hardware systems such as accelerator, steering wheel, and seat belt system. Furthermore, the control system 604 may add or replace components other than those shown and described. Alternatively, some of the components shown above may be reduced.

[0140] The control system 604 interacts with in-vehicle sensors, external sensors, restraint systems, seatbelt adjusters, other computer systems, or users via peripheral devices 605. Peripheral devices 605 may include wireless communication systems, on-board computers, on-board display devices, virtual reality devices, microphones, and / or speakers.

[0141] In some embodiments, peripheral device 605 provides a means for user interaction with the control system 604 via a user interface. For example, a seatbelt reminder can be sent to occupants via an in-vehicle display device. The user interface can also operate an on-board computer to receive user input. The on-board computer can be operated via a touchscreen. In other cases, peripheral device can provide a means for communicating with other devices located within the vehicle. For example, a microphone can receive audio (e.g., voice commands or other audio input) from the user of the control system 604. Similarly, a speaker can output audio to the user of the control system 604.

[0142] Wireless communication systems can communicate wirelessly with one or more devices, either directly or via a communication network. For example, wireless communication systems can communicate using networks such as cellular networks, WiFi, and wireless local area networks (WLANs), or they can communicate directly with devices using infrared links, Bluetooth, or ZigBee.

[0143] The power source 606 can provide power to various components of the vehicle. The power source 606 can be a rechargeable lithium-ion or lead-acid battery.

[0144] The seatbelt adjustment function, including some or all of its functions, is controlled by computer system 607. Computer system 607 may include at least one processor that executes instructions stored in a non-transitory computer-readable medium, such as memory. Computer system 607 provides execution code for the aforementioned seatbelt adjustment device to implement seatbelt adjustment.

[0145] The processor can be any conventional processor, such as a commercially available central processing unit (CPU). Alternatively, the processor can be a special-purpose device such as an application-specific integrated circuit (ASIC) or other hardware-based processor. Those skilled in the art will understand that the processor, computer, or memory can actually include multiple processors, computers, or memories that may or may not be stored in the same physical housing. For example, memory can be a hard disk drive or other storage media located in a housing different from that of a computer. Therefore, references to processors or computers will be understood to include references to a collection of processors or computers or memories that may or may not operate in parallel. Unlike using a single processor to perform the steps described herein, some components, such as steering and deceleration components, may each have their own processor that performs calculations only related to the component's specific function.

[0146] User interface 608 is used to provide information to or receive information from users of the vehicle. Optionally, user interface 608 may include one or more input / output devices within a set of peripheral devices 605, such as wireless communication systems, on-board computers, microphones, and speakers.

[0147] The seat belt adjustment system 609 is used in conjunction with the restraint system and seat belt adjustment device 601 provided in the embodiments of the present invention to achieve the purpose of adjusting the length of the seat belt restraint section of the occupant regardless of whether the retractor adjusts the length of the seat belt. That is, when a vehicle collision occurs and the occupant is not wearing the seat belt correctly, the system can automatically control the direction of movement of the seat belt and restrain the length of the occupant's seat belt restraint section, so that the length of the occupant's seat belt restraint section can restrain the occupant better.

[0148] It should be understood that the components described above are merely an example. In actual applications, components in the various modules or systems mentioned above may be added or removed as needed. Figure 6 This should not be construed as a limitation on the embodiments of this application.

[0149] The following is for reference. Figure 7 It shows a schematic diagram of the structure of a computer system 700 suitable for implementing embodiments of the present invention. Figure 7 The computer system shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0150] like Figure 7 As shown, the computer system 700 includes a central processing unit (CPU) 701, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 702 or programs loaded from storage section 708 into random access memory (RAM) 703. The RAM 703 also stores various programs and data required for the operation of the system 700. The CPU 701, ROM 702, and RAM 703 are interconnected via a bus 704. An input / output (I / O) interface 706 is also connected to the bus 704.

[0151] The following components are connected to I / O interface 706: including input section 706; output section 707 including cathode ray tube (CRT), liquid crystal display (LCD), and speaker, etc.; storage section 708 including hard disk, etc.; and communication section 709 including network interface card, such as LAN card, modem, etc. Communication section 709 performs communication processing via a network such as the Internet. Drive 610 is also connected to I / O interface 706 as needed. Removable media 611, such as disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 610 as needed so that computer programs read from them can be installed into storage section 708 as needed.

[0152] In particular, according to the embodiments disclosed in this invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this invention include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 709, and / or installed from removable medium 611. When the computer program is executed by central processing unit (CPU) 701, it performs the functions defined above in the system of this invention.

[0153] It should be noted that the computer-readable medium shown in this invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this invention, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0154] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0155] The modules described in the embodiments of the present invention can be implemented in software or in hardware. The described modules can also be housed in a processor; for example, a processor may be described as including a position determination module and a position adjustment module. The names of these modules do not necessarily limit the module itself; for example, the position determination module may also be described as "a module that analyzes the wearing status of occupants' seat belts in response to a vehicle collision."

[0156] In another aspect, the present invention also provides a computer-readable medium, which may be included in the device described in the above embodiments; or it may exist independently and not assembled into the device. The computer-readable medium carries one or more programs that, when executed by the device, cause the device to: determine the wearing position of an occupant's seatbelt in response to a vehicle collision; analyze whether the occupant is correctly wearing the seatbelt based on the wearing position; and, if the analysis indicates that the occupant is not correctly wearing the seatbelt, constrain the seatbelt restraint segment in cooperation with the adjustment device via the first traction component to restrain the occupant.

[0157] According to the technical solution of the present invention, by combining the adjusting device with the first traction component, the direct linkage between the seat belt restraint section and the seat belt traction section in the seat belt is released. This allows for the adjustment of the length of the occupant's seat belt restraint section regardless of whether the retractor adjusts the seat belt's usable length. In other words, when a vehicle collision occurs and the occupant is not wearing a seat belt correctly, the adjusting device and the first traction component work together to automatically control the direction of seat belt movement and restrain the length of the occupant's seat belt restraint section. This ensures that the length of the occupant's seat belt restraint section effectively restrains the occupant, overcoming the problem of the adjusted seat belt being too loose or too tight in existing methods. This improves the effectiveness of restraining the occupant by adjusting the seat belt and enhances the occupant's safety.

[0158] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A constraint system, characterized in that, include: The system includes a seat belt (10), an adjustment device (20) for adjusting the seat belt (10), a first traction assembly (30), a retractor (40) for controlling the retraction and extension of the seat belt (10), and a buckle (50) for securing the seat belt (10). The adjustment device (20) and the first traction assembly (30) are mounted on the B-pillar of the vehicle, and the first traction assembly (30) is located below the adjustment device (20); The seat belt (10) is movably connected to the adjustment device (20) and the first traction assembly (30); The first traction assembly (30) is used to release the direct linkage between the seat belt restraint section (11) and the seat belt traction section (12) in the seat belt (10), and cooperates with the adjustment device (20) to restrain the seat belt restraint section (11), wherein the seat belt restraint section (11) is located between the adjustment device (20) and the buckle (50), and the seat belt traction section (12) is located between the first traction assembly (30) and the retractor (40); The first traction component (30) is a fixed guide ring fixed to the B-pillar of the vehicle.

2. The constraint system according to claim 1, characterized in that, The adjusting device (20) includes: an emergency actuator, a guiding assembly (22), and a second traction assembly (23), wherein, The emergency actuator is fixed in the guide assembly (22), and the second traction assembly (23) is slidably connected to the guide assembly (22); The second traction component (23) is movably connected to the seat belt (10); The guide component (22) is fixed to the B-pillar of the vehicle and is used to define the movement path of the second traction component (23); In response to a collision with the vehicle, the emergency actuator drives the second traction assembly (23) to move along a path defined by the guide assembly (22) to adjust the position of the highest point of the seat belt (10).

3. The constraint system according to claim 1, characterized in that, The first traction component (30) is further configured to cooperate with the adjustment device (20) to dynamically adjust the length of the seat belt restraint segment (11).

4. The constraint system according to claim 1 or 3, characterized in that, The retractor (40) includes: a locking assembly, wherein, The locking assembly is used to lock the working length of the seat belt (10) to the target length when the adjusting device (20) adjusts the seat belt (10) to move upward; The first traction component (30) serves as a support point for the seat belt (10) so that the adjustment device (20) can adjust the seat belt (10) after the locking component locks the length of the seat belt (10).

5. The restraint system according to claim 1 or 3, characterized in that, The retractor (40) is further used to dynamically adjust the length of the seat belt (10) when the adjustment device (20) adjusts the seat belt (10) to move downward, so that the length of the adjusted seat belt restraint section (11) is a preset length.

6. The constraint system according to claim 5, characterized in that, The first traction component (30) is further used to dynamically adjust the seat belt restraint section (11) to the preset length by means of the indirect linkage between the seat belt restraint section (11) and the seat belt traction section (12) when the retractor (40) dynamically adjusts the length of the seat belt (10).

7. The constraint system according to claim 2, characterized in that, The guide component (22) is provided with multiple stops (221) corresponding to different heights, wherein, The gear position (221) is used to lock the position of the second traction component (23).

8. A method for adjusting a seatbelt, characterized in that, Based on the restraint system according to any one of claims 1 to 7, the seat belt adjustment method includes: In response to a vehicle collision, determine the position of the occupants' seat belts in the vehicle; Based on the wearing position, analyze whether the occupant is wearing the seat belt correctly; If it is determined that the occupant is not wearing the seat belt correctly, the first traction component and the adjustment device work together to restrain the seat belt restraint section in order to restrain the occupant.

9. The seat belt adjustment method according to claim 8, characterized in that, Determining the position of the occupants' seat belts in the vehicle includes: Acquire images containing the occupants and the seat belts they are wearing. The first relative position of the seat belt to the occupant's neck or the second relative position of the seat belt to the occupant's shoulder is identified from the image using an image recognition tool.

10. The seatbelt adjustment method according to claim 9, characterized in that, The analysis of whether the occupant is wearing the seat belt correctly includes: Based on the first relative position or the second relative position, calculate the distance between one or more edges of the seat belt and the occupant's neck or the occupant's shoulder; Based on the calculation results, analyze whether the occupants are wearing seat belts correctly.

11. The seatbelt adjustment method according to claim 9 or 10, characterized in that, Further includes: One or more edges of the seat belt are provided with a preset color that is different from the main body of the seat belt; The step of identifying the seat belt from the image includes: The position of the seat belt and its edge is identified based on a preset color on the edge of the seat belt.

12. The seatbelt adjustment method according to claim 8, characterized in that, Further includes: If no collision is detected and it is determined that the occupant is not wearing a seatbelt correctly, a warning message is sent to the occupant.

13. The seatbelt adjustment method according to claim 8, characterized in that, Further includes: When the vehicle is in normal condition, the second traction component in the control device is fixed in the preset original position in the guide component.

14. The seatbelt adjustment method according to claim 8 or 13, characterized in that, Further includes: Obtain historical characteristic information related to seat belt wearing of the current occupant; Based on the historical feature information, the adjustment device is controlled to move along the B-pillar of the vehicle to move the seat belt upwards or downwards, adjusting it to a suitable seat belt position for the current occupant.

15. The seatbelt adjustment method according to claim 10, characterized in that, Also includes: When the calculation result indicates that the distance between the edge of the seat belt and the occupant's neck is greater than a first distance threshold, or the distance between the edge of the seat belt and the occupant's shoulder is less than a second distance threshold, a first instruction is generated to instruct the seat belt to move upward, and the first instruction is sent to the emergency actuator in the adjustment device so that the emergency actuator drives the second traction assembly to move the seat belt upward; When the calculation result indicates that the distance between the edge of the seat belt and the occupant's neck is less than the first distance threshold, or the distance between the edge of the seat belt and the occupant's shoulder is greater than the second distance threshold, a second instruction is generated to instruct the seat belt to move downward, and the second instruction is sent to the emergency actuator in the adjustment device so that the emergency actuator drives the second traction assembly to move the seat belt downward.

16. The seatbelt adjustment method according to claim 15, characterized in that, Further includes: Acquire multiple historical data points from vehicle crash tests; Based on the historical data, the historical vehicle offset at the time of the vehicle collision is analyzed, as well as the gear position of the guide component in the adjustment device corresponding to the relative position of the seat belt and the occupant at the time of the vehicle collision. Construct a mapping relationship between the gear position and the historical vehicle offset. Based on the mapping relationship, a first instruction is generated to instruct the seat belt to move up a gear, or a second instruction is generated to instruct the seat belt to move down a gear.

17. The seatbelt adjustment method according to claim 8, characterized in that, The constraint on the seat belt restraint segment further includes: Calculate the current usage length of the seat belt; Based on the length of the seat belt traction section, the adjustment direction of the adjustment device, and the preset target length of the seat belt corresponding to the adjustment direction, a third instruction is generated to adjust the seat belt, and the third instruction is sent to the retractor so that the retractor adjusts the seat belt according to the third instruction.

18. A seatbelt adjustment system, characterized in that, include: The restraint system and seat belt adjustment device according to any one of claims 1 to 7; The seatbelt adjustment device includes: a position determination module and a position adjustment module, wherein: The location determination module is used to determine the wearing position of the occupants' seat belts in response to a vehicle collision; and to analyze whether the occupants are wearing the seat belts correctly based on the wearing position. The adjustment position module is used to restrain the seat belt restraint segment by cooperating with the first traction component and the adjustment device when it is determined that the occupant is not wearing the seat belt correctly, so as to restrain the occupant.

19. A vehicle, characterized in that, include: The seat belt adjustment system of claim 18.

20. A vehicle-mounted electronic device, characterized in that, include: One or more processors; Storage device for storing one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in any one of claims 8-17.

21. A computer-readable storage medium having a computer program thereon storing a seatbelt adjustment method, characterized in that, include: When the computer program is executed by the vehicle-mounted processor, it implements the method as described in any one of claims 8-17.

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