Airbag control method, apparatus and system, and storage medium
By adjusting the internal tethers and inflation levels of the airbag, and combining passenger information and location, the problem that existing airbags cannot adapt to changes in the position of rear passengers has been solved, achieving a more effective protection effect.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2026-03-26
AI Technical Summary
Existing vehicle airbags cannot adjust their shape and inflation level according to the position and information of rear passengers, resulting in ineffective protection for rear passengers. Especially when passengers are not wearing seat belts, have different heights and weights, or have changed seat positions, the airbags may cause excessive impact or insufficient protection to the passengers.
By detecting collision events, the control strategy and inflation levels of the airbag's internal tethers are adjusted according to preset parameters. Combined with the position and information of rear passengers, including space size, weight, and whether they are wearing seat belts, multi-level inflation and adaptive ventilation control are achieved to adapt to different passenger situations.
It improves the protection of rear passengers by reducing the impact on passengers, provides flexible protection adaptability, and avoids overprotection or underprotection.
Smart Images
Figure CN2025111230_26032026_PF_FP_ABST
Abstract
Description
Airbag control method, device, system and storage medium TECHNICAL FIELD
[0001] The present application relates to the technical field of safety control, and particularly relates to an airbag control method, device, system and storage medium. BACKGROUND
[0002] An airbag is a passive safety protection system, which is used in cooperation with a seat belt to provide effective anti-collision protection for passengers. When a collision occurs, the airbag can rapidly inflate to protect the passengers and minimize possible injuries, especially to the head and chest.
[0003] In the prior art, most vehicle airbags are currently distributed in front of the driver and front passenger seats. Although some vehicles are also provided with airbags in the rear row, the position and shape and size of the airbag are often fixed. When the inclination angle / forward and backward position of the backrest of the front or rear seat changes, or when the rear passengers have different heights and weights, or when the rear passengers do not wear seat belts, etc., the position of the head, chest and other parts of the passengers is not in the preset position, and the airbag with fixed position and shape and size cannot be adjusted accordingly, so that the airbag cannot effectively protect the rear passengers, for example, the airbag cannot effectively protect the rear passengers, or the rear passengers are subjected to excessive impact from the airbag. SUMMARY
[0004] The present application provides an airbag control method, device, system and storage medium to effectively protect the rear passengers.
[0005] The present application provides an airbag control method, which comprises:
[0006] When a collision event is detected, a control strategy of an internal tether of a target airbag is determined according to a first preset parameter;
[0007] A number of inflation of the target airbag is determined according to a second preset parameter, wherein the second preset parameter comprises at least one of a collision pulse, a space size of a position of the rear passengers and rear passenger information, the number of inflation is positively correlated with the collision pulse, and is positively correlated with the space size of the position of the rear passengers;
[0008] The target airbag is controlled according to the control strategy of the internal tether of the airbag and the number of inflation.
[0009] The application has the beneficial effects that: since the airbag in the application is provided with an internal tether and can be provided with multiple inflation stages, when a collision event is detected, a control strategy of the internal tether of a target airbag is determined according to a first preset parameter, and an inflation stage of the target airbag is determined according to a second preset parameter, wherein the second preset parameter includes at least one of a collision pulse, a space size of a position where a rear passenger is located, and rear passenger information, the inflation stage is positively correlated with the collision pulse and the space size of the position where the rear passenger is located, and the target airbag is controlled according to the control strategy of the internal tether of the airbag and the inflation stage. In this way, the internal tether and the inflation stage of the airbag can be adjusted to adapt to the space size of the position where the rear passenger is located and the rear passenger information, so as to provide effective protection for the rear passenger.
[0010] In one embodiment, the method further comprises:
[0011] In the case of a fixed inflation stage, when the internal tether of the airbag is in a released state, the positioning time of the airbag during inflation is greater than that when the internal tether of the airbag is in an unreleased state, and when the internal tether of the airbag is in the released state, the volume of the airbag after inflation is also greater than that when the internal tether of the airbag is in the unreleased state.
[0012] In one embodiment, the first preset parameter includes at least one of a space size of a position where a rear passenger is located and rear passenger information, and the control strategy of the internal tether of the target airbag determined according to the first preset parameter includes:
[0013] When the space size of the position where the rear passenger is located is greater than a first preset value, and the passenger volume in the rear passenger information is less than a second preset value, the control strategy of the internal tether of the target airbag is determined to release the internal tether of the target airbag.
[0014] In one embodiment, the space size of the position where the rear passenger is located is obtained in the following manner:
[0015] The track position of the front seat, the backrest angle of the front seat, the position of the rear seat, and the backrest angle of the rear seat are obtained.
[0016] The space size of the position where the rear passenger is located is determined according to the track position of the front seat, the backrest angle of the front seat, the position of the rear seat, and the backrest angle of the rear seat.
[0017] In one embodiment, the inflation stage of the target airbag determined according to the second preset parameter includes:
[0018] When the collision pulse is greater than a third preset value, the space size of the position where the rear passenger is located is greater than a fourth preset value, the passenger volume in the rear passenger information is greater than the second preset value, the passenger weight in the rear passenger information is greater than a fifth preset value, and the rear passenger is not wearing a seat belt, it is determined that the inflation level of the airbag is the highest level.
[0019] In one embodiment, the determining of the inflation level of the target airbag according to the second preset parameter comprises:
[0020] When the collision pulse is less than a sixth preset value, the space size of the position where the rear passenger is located is less than the fourth preset value, the passenger volume in the rear passenger information is less than the second preset value, the passenger weight in the rear passenger information is less than the fifth preset value, and the rear passenger is wearing a seat belt, it is determined that the inflation level of the airbag is the lowest level.
[0021] In one embodiment, the target airbag is provided with an adaptive vent, and the method further comprises:
[0022] determining a control strategy of the adaptive vent according to a third preset parameter;
[0023] controlling the opening and closing of the adaptive vent according to the control strategy of the adaptive vent.
[0024] In one embodiment, the third preset parameter at least includes passenger information, and the determining of the control strategy of the adaptive vent according to the third preset parameter comprises:
[0025] When the passenger volume in the passenger information is greater than a sixth preset value, it is determined that the control strategy of the adaptive vent is to control the adaptive vent to be closed;
[0026] When the passenger volume in the passenger information is less than the sixth preset value, it is determined that the control strategy of the adaptive vent is to control the adaptive vent to be opened.
[0027] The application also provides a safety airbag control device, comprising:
[0028] a first determining module configured to determine a control strategy of an internal tether of a target airbag according to a first preset parameter when a collision event is detected;
[0029] a second determining module configured to determine an inflation level of the target airbag according to a second preset parameter, wherein the second preset parameter at least includes a collision pulse, a space size of a position where a rear passenger is located, and passenger information of the rear passenger, the inflation level is positively correlated with the collision pulse and the space size of the position where the rear passenger is located;
[0030] The first control module is configured to control the target airbag according to a control strategy of the internal tether of the airbag and the inflation stage.
[0031] In one embodiment, the device further comprises:
[0032] The airbag positioning time control module is configured to, when the internal tether of the airbag is in a released state, the positioning time of the airbag during inflation is greater than that when the internal tether of the airbag is in an unreleased state, and when the internal tether of the airbag is in the released state, the internal volume of the airbag after inflation is also greater than that when the internal tether of the airbag is in the unreleased state.
[0033] In one embodiment, the first preset parameter comprises at least one of a space size of a position where the rear passenger is located and rear passenger information, and the first determination module is further configured to:
[0034] When the space size of the position where the rear passenger is located is greater than a first preset value, and the passenger volume in the rear passenger information is less than a second preset value, the control strategy of the internal tether of the target airbag is determined to be releasing the internal tether of the target airbag.
[0035] In one embodiment, the space size of the position where the rear passenger is located is obtained in the following manner:
[0036] The track position of the front seat, the backrest angle of the front seat, the position of the rear seat, and the backrest angle of the rear seat are obtained.
[0037] The space size of the position where the rear passenger is located is determined according to the track position of the front seat, the backrest angle of the front seat, the position of the rear seat, and the backrest angle of the rear seat.
[0038] In one embodiment, the second determination module is further configured to:
[0039] When the collision pulse is greater than a third preset value, the space size of the position where the rear passenger is located is greater than a fourth preset value, the passenger volume in the rear passenger information is greater than the second preset value, the passenger volume in the rear passenger information is greater than a fifth preset value, and the rear passenger is not wearing a seat belt, the inflation stage of the airbag is determined to be the highest stage.
[0040] In one embodiment, the second determination module is further configured to:
[0041] When the impact pulse is less than a sixth preset value, the space size of the position where the rear passenger is located is less than a fourth preset value, the passenger volume in the rear passenger information is less than the second preset value, the passenger weight in the rear passenger information is less than a fifth preset value, and the rear passenger has fastened the seat belt, it is determined that the inflation grade of the airbag is the lowest grade.
[0042] In one embodiment, the target airbag is provided with an adaptive vent, and the device further comprises:
[0043] A third determination module is configured to determine a control strategy of the adaptive vent according to a third preset parameter;
[0044] A second control module is configured to control the opening and closing of the adaptive vent according to the control strategy of the adaptive vent.
[0045] In one embodiment, the third preset parameter at least includes passenger information, and the third determination module is further configured to:
[0046] When the passenger volume in the passenger information is greater than a sixth preset value, it is determined that the control strategy of the adaptive vent is to control the adaptive vent to be closed;
[0047] When the passenger volume in the passenger information is less than the sixth preset value, it is determined that the control strategy of the adaptive vent is to control the adaptive vent to be opened.
[0048] The application also provides a kind of airbag control system, comprising:
[0049] At least one processor;And,
[0050] Memory connected in communication with the at least one processor;Wherein,
[0051] The memory stores the instructions executable by the at least one processor, and the instructions are executed by the at least one processor to realize the airbag control method described in any of the above embodiments.
[0052] The application also provides a kind of computer readable storage medium, when the instruction in storage medium is executed by the processor corresponding to airbag control system, so that airbag control system can realize the airbag control method described in any of the above embodiments.
[0053] Other features and advantages of the present application will be set forth in the subsequent description, and some of them become apparent from the description, or are understood by implementing the present application. The purposes and other advantages of the present application can be achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings.
[0054] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0055] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:
[0056] Figure 1 is a flowchart of an airbag control method according to an embodiment of this application;
[0057] Figure 2A is a schematic diagram of the position of the target airbag after inflation when both the front and rear seats are in their original upright positions in an embodiment of this application;
[0058] Figure 2B is a schematic diagram of the position of the target airbag after inflation when the front seats are tilted backward and the rear seats are upright in the original position in an embodiment of this application.
[0059] Figure 2C is a schematic diagram of the position of the target airbag after inflation when the front seats are moved back and upright and the rear seats are upright in their original positions in an embodiment of this application.
[0060] Figure 2D is a schematic diagram of the position of the target airbag after inflation when the front seats are upright in their original position and the rear seats are tilted backward in their original position in an embodiment of this application.
[0061] Figure 2E is a schematic diagram of the position of the target airbag after inflation when both the front and rear seats are tilted backward in the original position in an embodiment of this application;
[0062] Figure 3A is a schematic diagram of the position of the target airbag after inflation when the rear passenger is a small passenger in another embodiment of this application;
[0063] Figure 3B is a schematic diagram of the position of the target airbag after inflation when the rear passenger is a large passenger in another embodiment of this application;
[0064] Figure 4A is a schematic diagram of the position of the target airbag after inflation when the front seats are tilted backward in their original position, the rear seats are upright in their original position, and the rear passengers are large passengers, in another embodiment of this application.
[0065] Figure 4B is a schematic diagram of the position of the target airbag after inflation when the front seats are upright in their original positions, the rear seats are upright in their original positions, and the rear passenger is a small passenger, in another embodiment of this application.
[0066] Figure 5 is a schematic diagram of the structure of an airbag control device according to an embodiment of this application;
[0067] Figure 6 is a schematic diagram of the hardware structure of an airbag control system according to an embodiment of this application. Detailed Implementation
[0068] The preferred embodiments of the present application will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to explain and illustrate the present application, and should not be used to limit the present application.
[0069] FIG. 1 is a flowchart of a method for controlling an airbag according to an embodiment of the present application. As shown in FIG. 1, the method can be implemented as the following steps S101-S103:
[0070] In step S101, when a collision event is detected, a control strategy of an internal tether of a target airbag is determined according to a first preset parameter.
[0071] In step S102, an inflation stage of the target airbag is determined according to a second preset parameter, wherein the second preset parameter includes at least one of a collision pulse, a space size of a position where a rear passenger is located, and rear passenger information, the inflation stage is positively correlated with the collision pulse, and is positively correlated with the space size of the position where the rear passenger is located.
[0072] In step S103, the target airbag is controlled according to the control strategy of the internal tether of the airbag and the inflation stage.
[0073] First, when a collision event is detected, a control strategy of an internal tether of a target airbag is determined according to a first preset parameter.
[0074] In the present application, the airbag is provided with a corresponding internal tether for limiting the shape of the airbag after inflation. The first preset parameter includes at least one of a space size of a position where a rear passenger is located and rear passenger information. When a collision event is detected, the control strategy of the internal tether of the target airbag, i.e., whether to release the internal tether of the target airbag, can be determined by the first preset parameter.
[0075] The space size of the position where the rear passenger is located can be determined by obtaining a front seat track position, a front seat backrest angle, a rear seat position, and a rear seat backrest angle, and determining the space size of the position where the rear passenger is located according to the front seat track position, the front seat backrest angle, the rear seat position, and the rear seat backrest angle.
[0076] The rear passenger information can be height, weight, volume, passenger type (such as adult or child), etc. The rear passenger information can be obtained from a pre-stored passenger information table, such as a family information table pre-stored by the vehicle owner. When the rear passenger image is collected by the in-vehicle camera, the passenger identity is determined through face recognition technology, and then the rear passenger information is obtained from the passenger information table. Of course, the rear passenger information can also be directly determined through the rear passenger image collected by the in-vehicle camera combined with the pressure data obtained by the pressure sensor. Since there are various methods for determining passenger information through images and pressure data in the prior art, this application will not be expanded.
[0077] In the present application, the internal tether has two states of release and non-release. When the internal tether is in the release state, the airbag is no longer restricted by the internal tether and can reach the deepest state after inflation. When the internal tether is in the non-release state, the airbag will be restricted by the internal tether and can only reach the depth defined by the tether after inflation. It should be noted that the internal tether in the non-release state can be set to a fixed length, at which time the airbag can be inflated to a predetermined depth when the airbag is inflated. The internal tether in the non-release state can also be set to an automatically adjusted length. Specifically, based on a pre-trained internal tether length determination model, the size of the space where the rear passenger is located and the rear passenger information, the internal tether length corresponding to the rear passenger is outputted, and when the airbag is inflated, the internal tether is limited to the internal tether length corresponding to the rear passenger, so that the protection of the rear passenger is more adaptive. In addition, in the non-release state of the internal tether, the position of the internal tether can be adjusted according to the height of the passenger and the position of the passenger. Specifically, the height of the rear passenger is obtained, the height of the key parts of the rear passenger such as the head and chest is determined according to the height of the rear passenger, and the position of the internal tether is determined according to the height of the key parts of the rear passenger, for example, a corresponding relationship table of the height of the key parts of the rear passenger and the position of the internal tether is queried to determine the position of the internal tether. Of course, the key parts of the rear passenger can also be directly determined through image recognition, which is not limited in the present application.
[0078] In addition, for the control of the internal tether, a first preset value can be set as a threshold of the space size of the position of the rear passenger to distinguish between a large space and a small space. When the space size of the position of the rear passenger is greater than the first preset value, it is determined that the space is a large space, otherwise it is a small space. A second preset value can be set as a threshold of the volume of the rear passenger to distinguish between a large volume and a small volume. When the volume of the passenger is greater than the second preset value, it is a large volume, otherwise it is a small volume. When the space size of the position of the rear passenger is a large space and the volume of the rear passenger is a small volume, the airbag needs to be inflated to a deep airbag to protect the passenger, and the tether inside the target airbag needs to be released at this time. That is, when the space size of the position of the rear passenger is greater than the first preset value and the volume of the passenger in the rear passenger information is less than the second preset value, it is determined that the control strategy of the internal tether of the target airbag is to release the internal tether of the target airbag. For the release mode of the internal tether, it can be tether cutting, or release through active bolts or active pins or levers, etc. The present application does not limit this.
[0079] Secondly, the inflation stage of the target airbag is determined according to a second preset parameter, wherein the second preset parameter includes at least one of a collision pulse, a space size of a position of a rear passenger, and passenger information, the inflation stage is positively correlated with the collision pulse, and is positively correlated with the space size of the position of the rear passenger.
[0080] In order to form more effective protection for the rear passenger, the present application can adjust the inflation stage of the target airbag accordingly. The higher the inflation stage, the more the airbag needs to be inflated. Specifically, the inflation stage is positively correlated with the collision pulse, that is, the greater the collision pulse, the more the target airbag needs to be inflated. The inflation stage is positively correlated with the space size of the position of the rear passenger, that is, the larger the space of the position of the rear passenger, the more the target airbag needs to be inflated. In addition, in the present application, the inflation stage is also related to passenger information. Specifically, when the passenger's weight is larger, the inertia is larger, and thus a larger resistance is needed under the same collision pulse, so the target airbag needs to be inflated more. Therefore, the rear passenger information is obtained, and the rear passenger information at least includes one of the type of the rear passenger (such as an adult or a child), the volume of the rear passenger, the weight of the rear passenger, whether the rear passenger wears a seat belt, and the target state of the internal tether (release or not release). The required pressure of the target airbag corresponding to the rear passenger is determined according to the rear passenger information. Specifically, a pressure determination model can be constructed in advance through a neural network model, etc. The theoretical pressure of the target airbag corresponding to the rear passenger is determined by inputting the rear passenger information into the pressure determination model. The inflation stage of the target airbag is determined according to the theoretical pressure.
[0081] In particular, for the inflation stage of the target airbag, the third preset value can be set as the maximum threshold of the crash pulse, the sixth preset value can be set as the minimum threshold of the crash pulse, the second preset value can be set as the threshold of the volume of the rear passenger to distinguish between large volume and small volume, the fourth preset value can be set as the threshold of the space size of the position of the rear passenger to distinguish between large space and small space, and the fifth preset value can be set as the threshold of the weight of the passenger to distinguish between large weight and small weight. When the crash pulse is greater than the third preset value, the space size of the position of the rear passenger is greater than the fourth preset value, the volume of the passenger in the rear passenger information is greater than the second preset value, the weight of the passenger in the rear passenger information is greater than the fifth preset value, and the rear passenger is not wearing a seat belt, the inflation stage of the airbag is determined to be the highest stage. When the crash pulse is less than the sixth preset value, the space size of the position of the rear passenger is less than the fourth preset value, the volume of the passenger in the rear passenger information is less than the second preset value, the weight of the passenger in the rear passenger information is less than the fifth preset value, and the rear passenger is wearing a seat belt, the inflation stage of the airbag is determined to be the lowest stage.
[0082] Finally, the target airbag is controlled according to the control strategy of the internal tether of the airbag and the inflation stage.
[0083] Figs. 2A-2E are schematic diagrams of the inflated target airbag in different front seat tracks and different front and rear seat back reclining angles, taking the front airbag of the rear seat as an example in an embodiment of the present application. As shown in Figs. 2A-2E, the airbag control device is arranged in the backrest of the front seat, and the target airbag device corresponding to the rear seat can also be arranged in other positions, such as the side of the rear seat, which is not limited in the present application. Before inflation, the target airbag is arranged in the airbag housing of the front part of the rear seat. The target airbag is provided with an internal tether, a tether release component is arranged in connection with the internal tether, and an inflator is arranged in connection with the target airbag.
[0084] Fig. 2A is a schematic diagram of the position of the target airbag after inflation in an embodiment of the present application when the front and rear seats are both in the original position and stand upright, at this time, in combination with the track position of the front and rear seats and the angle of the front and rear seats, when it is determined that the size of the space between the rear passenger and the front seat is a large space, the control strategy of the internal tether is to release, then the internal tether releases before or during or after the target airbag inflates, and the target airbag can reach the "deep" position to effectively protect the rear passenger. Fig. 2B is a schematic diagram of the position of the target airbag after inflation in an embodiment of the present application when the front seat is in the original position and reclines backward and the rear seat is in the original position and stands upright, in combination with the track position of the front and rear seats and the angle of the front and rear seats, when it is determined that the size of the space between the rear passenger and the front seat is a small space, in this case, the space where the rear passenger is located is small, if the position of the target airbag after inflation remains the "deep" position, it will cause excessive compression to the rear passenger and even cause harm, at this time, the control strategy of the internal tether is not to release, so as to limit the shape and volume of the target airbag through the internal tether, to avoid excessive protection to the rear passenger. Fig. 2C is a schematic diagram of the position of the target airbag after inflation in an embodiment of the present application when the front seat is in the original position and stands upright and the rear seat is in the original position and stands upright, for the same reason, in combination with the track position of the front and rear seats and the angle of the front and rear seats, when it is determined that the size of the space between the rear passenger and the front seat is a small space, the control strategy of the internal tether is not to release, so as to limit the volume of the target airbag. Fig. 2D is a schematic diagram of the position of the target airbag after inflation in an embodiment of the present application when the front seat is in the original position and stands upright and the rear seat is in the original position and reclines backward, because the rear seat reclines backward, the gap between the rear seat and the front seat is increased, in combination with the track position of the front and rear seats and the angle of the front and rear seats, when it is determined that the size of the space between the rear passenger and the front seat is a large space, the control strategy of the internal tether is to release, so that the target airbag can reach the "deep" position to protect the passenger. Fig. 2E is a schematic diagram of the position of the target airbag after inflation in an embodiment of the present application when the front and rear seats are both in the original position and recline backward, in combination with the track position of the front and rear seats and the angle of the front and rear seats, when it is determined that the size of the space between the rear passenger and the front seat is a large space, the control strategy of the internal tether is to release. It can be understood that the determination of the inflation stage of the airbag in Figs. 2A-2E can be determined according to the crash pulse, the safety belt state, the size of the passenger volume, the size of the passenger weight, etc.
[0085] Figs. 3A-3B are schematic views of the target airbag after inflation when the rear seat is occupied by different passengers, according to another embodiment of the present application. As shown in Figs. 3A and 3B, the target airbag is provided with an adaptive vent to adjust the air pressure of the target airbag to prevent the rear passenger from being impacted by excessive airbag pressure. Specifically, a control strategy of the adaptive vent is determined according to a third preset parameter; and the adaptive vent is controlled to open and close according to the control strategy of the adaptive vent. The third preset parameter includes at least passenger information, such as passenger volume, passenger weight, etc., to determine the type of passenger. When the passenger volume in the passenger information is greater than a sixth preset value, or when the passenger weight is greater than a preset weight, the rear passenger is determined to be a large passenger. At this time, due to the large inertia of the passenger, the target airbag needs a large pressure to protect the passenger. At this time, the control strategy of the adaptive vent is determined to control the adaptive vent to close. When the passenger volume in the passenger information is less than or equal to the sixth preset value, or when the passenger weight is less than or equal to the preset weight, the rear passenger is determined to be a small passenger, such as a child or a passenger with a small weight. At this time, the inertia of the passenger is small, and the target airbag does not need a large pressure to protect the passenger. At this time, the control strategy of the adaptive vent is determined to control the adaptive vent to open. Fig. 3A is a structural schematic view of the position of the target airbag after inflation when the rear passenger is a small passenger. For a child or a small passenger seated on the rear seat, although there is enough gap between the passenger and the front seat backrest, the small passenger does not need as much airbag restraint as a large passenger. Therefore, the adaptive vent is opened to allow the gas to escape, thereby reducing the cushion pressure, which reduces the potential for injury caused by inflation and provides a more optimized cushion pressure for the child. For a large passenger, a higher cushion pressure is needed, so the adaptive vent is not triggered, and the vent remains sealed to maintain a higher pressure. Fig. 3B is a schematic view of the position of the target airbag after inflation when the rear passenger is a large passenger. Due to the large inertia of the large passenger, the target airbag needs a large pressure to protect the passenger. At this time, the vent needs to be sealed to prevent the pressure of the target airbag from being insufficient.
[0086] Of course, in the present application, the data collected by various sensors in the vehicle, such as pressure sensors, position sensors, angle sensors, and in-vehicle cameras, can be used to determine the size of the space where the passenger is located, the size of the passenger's volume, the passenger's height, the passenger's weight, the passenger's location, and whether the passenger is wearing a seat belt. The internal tether, inflation stages, and adaptive vent of the target airbag are simultaneously controlled to achieve self-adaptation of the target airbag according to different passenger information and the size of the space where the rear passenger is located, thereby providing better protection for the passenger. It can be understood that, in the present application, the inflator can be a multi-stage inflator or multiple inflators to adapt to the multi-stage inflation of the target airbag. When the required number of inflation stages is high, multiple inflators can be turned on simultaneously to ensure that the airbag is inflated in time. When the required number of inflation stages is low, the number of inflators turned on can be reduced accordingly. In addition, when the adaptive vent needs to be opened, the number of inflators turned on can be reduced accordingly, or the inflation speed of some inflators can be controlled, or the inflation time of some inflators can be delayed accordingly.
[0087] Fig. 4A and Fig. 4B show the situation of controlling the target airbag with the combination of the internal tether, the inflation stage and the adaptive vent. At this time, more flexible and safer protection can be provided for the passenger. Fig. 4A is a schematic diagram of the position of the target airbag after inflation when the front seat is reclined and the rear seat is upright, and the rear passenger is a large passenger in another embodiment of the present application. In combination with the track position of the front and rear seats and the angle of the front and rear seats, when it is determined that the space between the rear passenger and the front seat is a small space, the control strategy of the internal tether is not to release, so as to prevent the potential harm or uncomfortable feeling of the rear passenger caused by the large volume of the target airbag after inflation. At this time, since the volume of the target airbag is small, the cushion pressure will increase. Therefore, in order to avoid the excessive pressure of the airbag, the adaptive vent can be opened to discharge the gas. Moreover, the adaptive vent can be combined with the single-stage inflator or the delay between the stages of the inflator to optimize the user experience. Fig. 4B is a schematic diagram of the position of the target airbag after inflation when the front seat is upright and the rear seat is upright, and the rear passenger is a small passenger in another embodiment of the present application. The small passenger is located in the rear seat. According to the upright position of the backrest of the front seat, there is enough gap between the passenger and the front seat. In combination with the track position of the front and rear seats and the angle of the front and rear seats, when it is determined that the space between the rear passenger and the front seat is a large space, the control strategy of the internal tether is to release. However, due to the size of the passenger, a lower cushion pressure is required. At this time, the adaptive vent and / or the number, speed, delay, etc. of the inflator can be adjusted to adjust the pressure of the target airbag. This combination will provide effective coverage and restraint for the small passenger, while reducing the potential harm caused by inflation.
[0088] The present application has the beneficial effect that: since the airbag in the present application is provided with an internal tether, and the airbag can be provided with multiple inflation stages. Therefore, when a collision event is detected, the control strategy of the internal tether of the target airbag is determined according to the first preset parameter; and the inflation stage of the target airbag is determined according to the second preset parameter, wherein the second preset parameter includes at least one of the collision pulse, the space size of the position of the rear passenger and the rear passenger information, the inflation stage is positively correlated with the collision pulse, and is positively correlated with the space size of the position of the rear passenger; the target airbag is controlled according to the control strategy of the internal tether of the airbag and the inflation stage. Furthermore, the internal tether and the inflation stage of the airbag can be adjusted to adapt to the space size of the position of the rear passenger and the rear passenger information, so as to provide effective protection for the rear passenger.
[0089] In one embodiment, the above method can also be implemented as the following steps:
[0090] In the case of fixed inflation stage, when the target airbag internal tether is in the released state, the airbag positioning time after inflation is greater than that when the airbag internal tether is in the unreleased state, and when the airbag internal tether is in the released state, the airbag volume after inflation is also greater than that when the airbag internal tether is in the unreleased state.
[0091] In the embodiment, the "airbag positioning time" refers to the time required for the airbag to fully inflate and reach the required position to protect the passenger from the collision. In order to ensure that the target airbag can inflate in time, in the case of fixed inflation stage, when the target airbag internal tether is in the released state, the airbag positioning time after inflation is greater than that when the airbag internal tether is in the unreleased state, and when the airbag internal tether is in the released state, the airbag volume after inflation is also greater than that when the airbag internal tether is in the unreleased state.
[0092] In one embodiment, the first preset parameter includes at least one of the space size of the position of the rear passenger and the rear passenger information, and the step S101 is further implemented as the following step A1:
[0093] In step A1, when the space size of the position of the rear passenger is greater than a first preset value, and the passenger volume in the rear passenger information is less than a second preset value, the control strategy of the target airbag internal tether is determined to release the target airbag internal tether.
[0094] In one embodiment, the space size of the position of the rear passenger in the step S102 or step A1 can be implemented as the following steps B1-B2:
[0095] In step B1, the front seat track position, the front seat backrest angle, the rear seat position and the backrest angle of the rear seat are obtained.
[0096] In step B2, the space size of the position of the rear passenger is determined according to the front seat track position, the front seat backrest angle, the rear seat position and the backrest angle of the rear seat.
[0097] In the embodiment, the front seat track position, the front seat backrest angle, the rear seat position and the backrest angle of the rear seat are obtained. Specifically, the front seat track position, the front seat backrest angle, the rear seat position and the backrest angle of the rear seat can be obtained by a seat track position sensor and a seat backrest angle sensor respectively.
[0098] The space size of the position of the rear passenger is determined according to the front-row seat track position, the front-row seat backrest angle, the rear-row seat position and the backrest angle of the rear-row seat. For example, the space size of the position of the rear passenger can be determined by querying a preset corresponding relationship table of seat position, seat angle and space size of the position of the rear passenger. Of course, a preset model of the front-row seat track position, the front-row seat backrest angle, the rear-row seat position and the backrest angle of the rear-row seat and the space size of the position of the rear passenger can also be constructed in advance according to different vehicle models, and the space size of the position of the rear passenger is determined by the preset model.
[0099] In one embodiment, the step S102 can be implemented as the following step C1:
[0100] When the collision pulse is greater than a third preset value, the space size of the position of the rear passenger is greater than a fourth preset value, the passenger volume in the rear passenger information is greater than the second preset value, the passenger weight in the rear passenger information is greater than a fifth preset value, and the rear passenger is not wearing a seat belt, it is determined that the inflation stage of the safety airbag is the highest stage.
[0101] In one embodiment, the step S102 can also be implemented as the following step C2:
[0102] When the collision pulse is less than a sixth preset value, the space size of the position of the rear passenger is less than the fourth preset value, the passenger volume in the rear passenger information is less than the second preset value, the passenger weight in the rear passenger information is less than the fifth preset value, and the rear passenger is wearing a seat belt, it is determined that the inflation stage of the safety airbag is the lowest stage.
[0103] In one embodiment, the target safety airbag is provided with an adaptive vent, and the above method can also be implemented as the following steps D1-D2:
[0104] In step D1, a control strategy of the adaptive vent is determined according to a third preset parameter;
[0105] In step D2, the opening and closing of the adaptive vent are controlled according to the control strategy of the adaptive vent.
[0106] In one embodiment, the third preset parameter at least includes passenger information, and the above step D1 can be implemented as the following steps D11-D12:
[0107] In step D11, when the passenger volume in the passenger information is greater than a sixth preset value, it is determined that the control strategy of the adaptive vent is to control the adaptive vent to be closed;
[0108] In step D12, when the passenger volume in the passenger information is less than a sixth preset value, it is determined that the control strategy of the adaptive air vent is to control the adaptive air vent to be opened.
[0109] Fig. 5 is a structural schematic diagram of a safety airbag control device in an embodiment of the present application. As shown in Fig. 4, the safety airbag control device comprises:
[0110] The first determining module 501 is configured to determine a control strategy of the target safety airbag internal tether according to a first preset parameter when a collision event is detected.
[0111] The second determining module 502 is configured to determine an inflation stage of the target safety airbag according to a second preset parameter, wherein the second preset parameter comprises at least one of a collision pulse, a space size of a position where a rear passenger is located, and passenger information of the rear passenger, the inflation stage is positively correlated with the collision pulse and the space size of the position where the rear passenger is located.
[0112] The first control module 503 is configured to control the target safety airbag according to the control strategy of the safety airbag internal tether and the inflation stage.
[0113] In an embodiment, the device further comprises:
[0114] The safety airbag positioning time control module is configured to, in the case where the inflation stage is fixed, when the safety airbag internal tether is in a released state, the positioning time of the inflated safety airbag is greater than the positioning time of the inflated safety airbag when the safety airbag internal tether is in an unreleased state, and when the safety airbag internal tether is in the released state, the volume of the inflated safety airbag is also greater than the volume of the inflated safety airbag when the safety airbag internal tether is in the unreleased state.
[0115] In an embodiment, the first preset parameter comprises at least one of the space size of the position where the rear passenger is located and the passenger information of the rear passenger, and the first determining module is further configured to:
[0116] When the space size of the position where the rear passenger is located is greater than a first preset value, and the passenger volume in the passenger information is less than a second preset value, it is determined that the control strategy of the target safety airbag internal tether is to release the target safety airbag internal tether.
[0117] In an embodiment, the space size of the position where the rear passenger is located is obtained in the following manner:
[0118] The track position of the front seat, the backrest angle of the front seat, the position of the rear seat, and the backrest angle of the rear seat are obtained.
[0119] The space size of the position of the rear passenger is determined according to the front-row seat track position, the front-row seat backrest angle, the rear-row seat position and the backrest angle of the rear-row seat.
[0120] In one embodiment, the second determining module is further configured to:
[0121] When the collision pulse is greater than a third preset value, the space size of the position of the rear passenger is greater than a fourth preset value, the passenger volume in the rear passenger information is greater than the second preset value, the passenger weight in the rear passenger information is greater than a fifth preset value, and the rear passenger is not wearing a seat belt, the inflation order of the airbag is determined as the highest order.
[0122] In one embodiment, the second determining module is further configured to:
[0123] When the collision pulse is less than a sixth preset value, the space size of the position of the rear passenger is less than the fourth preset value, the passenger volume in the rear passenger information is less than the second preset value, the passenger weight in the rear passenger information is less than the fifth preset value, and the rear passenger is wearing a seat belt, the inflation order of the airbag is determined as the lowest order.
[0124] In one embodiment, the target airbag is provided with an adaptive vent, and the device further comprises:
[0125] A third determining module configured to determine a control strategy of the adaptive vent according to a third preset parameter;
[0126] A second control module configured to control the opening and closing of the adaptive vent according to the control strategy of the adaptive vent.
[0127] In one embodiment, the third preset parameter at least includes passenger information, and the third determining module is further configured to:
[0128] When the passenger volume in the passenger information is greater than a sixth preset value, the control strategy of the adaptive vent is determined as controlling the adaptive vent to be closed;
[0129] When the passenger volume in the passenger information is less than the sixth preset value, the control strategy of the adaptive vent is determined as controlling the adaptive vent to be opened.
[0130] FIG. 6 is a schematic diagram of a hardware structure of an airbag control system according to an embodiment of the present application. As shown in FIG. 6, the airbag control system comprises:
[0131] at least one processor 620; and
[0132] a memory 604 in communication connection with the at least one processor 620; wherein,
[0133] The memory 604 stores instructions that are executable by the at least one processor 620 for implementing the airbag control method as described in any one of the above embodiments.
[0134] Referring to FIG. 6, the airbag control system 600 can include one or more of the following components: a processing component 602, a memory 604, a power supply component 606, an audio component 610, an input / output (I / O) interface 612, a sensor component 614, and a communication component 616.
[0135] The processing component 602 generally controls the overall operations of the airbag control system 600. The processing component 602 can include one or more processors 620 to execute instructions to complete all or part of steps of the above-described methods. In addition, the processing component 602 can include one or more modules to facilitate the interaction between the processing component 602 and other components.
[0136] The memory 604 is configured to store various types of data to support the operations of the airbag control system 600. Examples of these data include instructions for any application or method operating on the airbag control system 600, such as text, pictures, videos, etc. The memory 604 can be implemented by any type of volatile or non-volatile storage devices, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic or optical disk.
[0137] The power supply component 606 supplies power for the various components of the airbag control system 600. The power supply component 606 can include a power supply management system, one or more power supplies, and other related components.
[0138] The audio component 610 is configured to output and / or input audio signals. For example, the audio component 610 includes a microphone (MIC) that is configured to receive an external audio signal when the airbag control system 600 is in an operation mode, such as an alarm mode, a recording mode, a voice recognition mode, and a voice output mode. The received audio signal can be further stored in the memory 604 or transmitted via the communication component 616. In some embodiments, the audio component 610 also includes a speaker for outputting audio signals.
[0139] The I / O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.
[0140] The sensor component 614 includes one or more sensors for providing status assessments of various aspects of the airbag control system 600. For example, the sensor component 614 can include an acoustic sensor. In addition, the sensor component 614 can detect an on / off state of the airbag control system 600, relative positioning of components, such as a display and keypad of the airbag control system 600, an operational state of the airbag control system 600 or a component of the airbag control system 600, an orientation or acceleration / deceleration of the airbag control system 600, and a temperature change of the airbag control system 600. The sensor component 614 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 614 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 614 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, a material build-up thickness sensor, or a temperature sensor.
[0141] The communication component 616 is configured to enable the airbag control system 600 to provide wired or wireless communication capabilities with other devices and cloud platforms. The airbag control system 600 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an example embodiment, the communication component 616 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 616 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
[0142] In example embodiments, the airbag control system 600 can be implemented with one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements for performing the airbag control methods described in any of the embodiments.
[0143] The application also provides a computer readable storage medium, when instructions in the storage medium are executed by a processor corresponding to the airbag control system, the airbag control system is enabled to implement the airbag control method described in any of the embodiments.
[0144] Those skilled in the art will appreciate that embodiments of the application can be supplied as methods, systems, or computer program products. Accordingly, the application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can be embodied in the form of a computer program product on one or more computer readable storage media (including, but not limited to, disk memory and optical memory) having computer usable program code embodied therein.
[0145] The application is described with reference to the flowchart and / or block diagrams of the methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks.
[0146] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart and / or block diagram block or blocks.
[0147] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart and / or block diagram block or blocks.
[0148] Obviously, those skilled in the art can make various modifications and variations to the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application fall within the scope of the claims of the application and their equivalents, the application is also intended to include these modifications and variations.
Claims
1. An airbag control method characterized by, The method comprises the following steps: When a collision event is detected, a control strategy of an internal tether of a target airbag is determined according to a first preset parameter; A gas inflation stage of the target airbag is determined according to a second preset parameter, wherein the second preset parameter comprises at least one of a collision pulse, a space size of a position where a rear passenger is located, and passenger information, the gas inflation stage is positively correlated with the collision pulse, and the gas inflation stage is positively correlated with the space size of the position where the rear passenger is located; The target airbag is controlled according to the control strategy of the internal tether of the airbag and the gas inflation stage.
2. The method of claim 1, wherein, The first preset parameter comprises at least one of the space size of the position where the rear passenger is located and the passenger information, and the control strategy of the internal tether of the target airbag is determined according to the first preset parameter, comprising: When the space size of the position where the rear passenger is located is greater than a first preset value, and a passenger volume in the passenger information is less than a second preset value, the control strategy of the internal tether of the target airbag is determined as releasing the internal tether of the target airbag.
3. The method of claim 1 or 2, wherein, The space size of the position where the rear passenger is located is obtained in the following manner: A front seat track position, a front seat backrest angle, a rear seat position, and a rear seat backrest angle are obtained; The space size of the position where the rear passenger is located is determined according to the front seat track position, the front seat backrest angle, the rear seat position, and the rear seat backrest angle.
4. The method of claim 1, wherein, The gas inflation stage of the target airbag is determined according to the second preset parameter, comprising: When the collision pulse is greater than a third preset value, the space size of the position where the rear passenger is located is greater than a fourth preset value, the passenger volume in the passenger information is greater than the second preset value, the passenger weight in the passenger information is greater than a fifth preset value, and the rear passenger is not wearing a seat belt, the gas inflation stage of the airbag is determined as a highest stage.
5. The method of claim 1, wherein, The gas inflation stage of the target airbag is determined according to the second preset parameter, comprising: When the collision pulse is less than a sixth preset value, the space size of the position where the rear passenger is located is less than the fourth preset value, the passenger volume in the passenger information is less than the second preset value, the passenger weight in the passenger information is less than the fifth preset value, and the rear passenger is wearing a seat belt, the gas inflation stage of the airbag is determined as a lowest stage.
6. The method of claim 1, wherein, The target airbag is provided with an adaptive vent, and the method further comprises: A control strategy of the adaptive vent is determined according to a third preset parameter; The adaptive vent is controlled to be opened or closed according to the control strategy of the adaptive vent.
7. The method of claim 6, wherein, The third preset parameter comprises at least passenger information, and the control strategy of the adaptive vent is determined according to the third preset parameter, comprising: When the passenger volume in the passenger information is greater than a sixth preset value, the control strategy of the adaptive vent is determined as controlling the adaptive vent to be closed; When the passenger volume in the passenger information is less than the sixth preset value, the control strategy of the adaptive vent is determined as controlling the adaptive vent to be opened.
8. An airbag control device characterized by comprising: The method comprises the following steps: A first determination module is configured to determine a control strategy of an internal tether of a target airbag according to a first preset parameter when a collision event is detected; The second determining module is configured to determine the inflation stage of the target airbag according to a second preset parameter, wherein the second preset parameter comprises at least one of a collision pulse, a space size of a position where a rear passenger is located, and rear passenger information, and the inflation stage is positively correlated with the collision pulse and the space size of the position where the rear passenger is located; The control module is configured to control the target airbag according to a control strategy of an internal tether of the airbag and the inflation stage.
9. An airbag control system characterized by comprising: The method comprises: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to implement the airbag control method according to any one of claims 1-7.
10. A computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor corresponding to the airbag control system, the airbag control system can implement the airbag control method according to any one of claims 1-7.