Vehicle safety system, control method and vehicle

Abstract

The present application relates to a vehicle safety system, a control method and a vehicle, wherein the vehicle safety system comprises: an airbag device, at least for protecting the head of an occupant; an occupant detection device, for detecting the head space of an occupant; and a controller, for triggering the airbag device to protect the head of an occupant when the head space of the occupant meets a preset condition. The beneficial effect of the present application is that it provides a vehicle safety system, a control method and a vehicle that effectively and accurately trigger the airbag device to protect the head of an occupant based on the head space of the occupant.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle safety system, a control method and a vehicle. Background Art

[0002] The airbag device is part of the vehicle safety system, which quickly inflates and deploys when the vehicle is hit to protect the occupants from injury. However, in the related art, the airbag device does not take into account whether the space for the occupant's head meets the triggering conditions, and the airbag device cannot be effectively deployed or is deployed incorrectly, resulting in injury to the occupants. Summary of the invention

[0003] The embodiments of the present application provide a vehicle safety system, which improves the safety of triggering an airbag device, so as to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned object, according to a first aspect of the present application, a vehicle safety system is provided, comprising:

[0005] An air bag device, at least for protecting the occupant's head;

[0006] An occupant detection device, used to detect the headroom of an occupant;

[0007] The controller is used to trigger the airbag device to protect the occupant's head when the occupant's head space meets preset conditions.

[0008] Optionally, the vehicle safety system includes:

[0009] A posture detection device, at least used to detect the rollover angle of the vehicle;

[0010] Wherein, when a third preset triggering condition is met, the controller triggers the airbag device to protect the occupant's head;

[0011] The third preset trigger condition includes:

[0012] The headroom of the occupants meets the preset conditions;

[0013] The vehicle's rollover angle exceeds the angle threshold.

[0014] Optionally, the vehicle safety system includes:

[0015] A collision detection device, used to detect the collision intensity of the vehicle;

[0016] Wherein, when a fourth preset triggering condition is met, the controller triggers the airbag device to protect the occupant's head;

[0017] The fourth preset trigger condition includes:

[0018] The headroom of the occupants meets the preset conditions;

[0019] The collision intensity of the vehicle exceeds the intensity threshold.

[0020] Optionally, the vehicle safety system includes:

[0021] A seat detection device, used for detecting the seating status of the seat;

[0022] A posture detection device, at least used to detect the rollover angle of the vehicle;

[0023] A collision detection device, used to detect the collision intensity of the vehicle;

[0024] Wherein, when a first preset triggering condition is met, the controller triggers the airbag device to protect the occupant's head;

[0025] The first preset trigger condition includes:

[0026] The headroom of the occupants meets the preset conditions;

[0027] The seat's sitting state meets the preset state;

[0028] The collision intensity of the vehicle exceeds an intensity threshold and / or the rollover angle of the vehicle exceeds an angle threshold.

[0029] Optionally, the occupant detection device includes at least a radar sensor and / or an image sensor.

[0030] Optionally, the airbag device comprises:

[0031] Head airbag module, used to protect the occupant's head;

[0032] When the head space of the occupant meets a preset condition, the controller triggers the head airbag module to protect the occupant's head.

[0033] Optionally, when a first preset trigger condition is met, the controller triggers the head airbag module to protect the occupant's head.

[0034] Optionally, the airbag device comprises:

[0035] Side airbag modules, used to protect the occupants’ sides;

[0036] Wherein, when the seating state of the seat meets a preset state and the collision intensity of the vehicle exceeds an intensity threshold, the controller triggers the side airbag module to protect the side of the occupant.

[0037] Optionally, the airbag device comprises:

[0038] The first type of initiator is used to control the deployment of the side airbag module and / or the head airbag module.

[0039] Optionally, the first type of detonator includes:

[0040] a primary detonation unit connected to the side airbag module;

[0041] Among them, when the seating state of the seat meets the preset state and / or the collision intensity of the vehicle exceeds the intensity threshold, and the occupant's head space does not meet the preset conditions, the controller only triggers the primary detonation unit to control the deployment of the side airbag module.

[0042] Optionally, the first type of detonator includes:

[0043] a secondary detonation unit connected to the head airbag module and / or the side airbag module;

[0044] Wherein, when a first preset trigger condition is met, the controller triggers the secondary detonation unit to control the deployment of the head airbag module.

[0045] Optionally, the airbag device comprises:

[0046] A gas channel is connected between the side airbag module and the head airbag module so that the side airbag module and the head airbag module can be triggered as a whole.

[0047] Optionally, the airbag device comprises:

[0048] a first drawstring, used to control the communication of the gas passage between the side airbag module and the head airbag module;

[0049] A second type of detonator connected to the first draw strap;

[0050] Wherein, when a first preset trigger condition is met, the controller triggers the second type of detonator to control the action of the first pull strap to connect the gas channel between the side airbag module and the head airbag module.

[0051] Optionally, the airbag device comprises:

[0052] A third type of initiator, used to control the deployment of the head airbag module;

[0053] Wherein, when a first preset trigger condition is met, the controller triggers the third type detonator.

[0054] Optionally, the vehicle safety system further includes:

[0055] A seat belt pretensioning module, used to provide pretensioning force to the seat belt;

[0056] Risk detection module, used to obtain the current risk factor of the vehicle;

[0057] Wherein, when a second preset trigger condition is met, the controller triggers the seat belt pretensioning module;

[0058] The second preset trigger condition includes:

[0059] The seat's sitting state meets the preset state;

[0060] The current risk factor of the vehicle exceeds a risk threshold and / or the collision intensity of the vehicle exceeds an intensity threshold.

[0061] According to a second aspect of the present application, a control method for a vehicle safety system is provided, the control method comprising:

[0062] According to the detection result of the occupant detection device, when the head space of the occupant meets the preset conditions, the airbag device is controlled to trigger the protection of the occupant's head.

[0063] Optionally, before controlling the airbag device to trigger the protection of the occupant's head, the control method further includes:

[0064] Determine whether the collision intensity of the vehicle exceeds an intensity threshold;

[0065] When the collision intensity of the vehicle exceeds the intensity threshold, the rollover angle of the vehicle is obtained;

[0066] Determine whether the vehicle's rollover angle exceeds an angle threshold;

[0067] When the rollover angle of the vehicle does not exceed the angle threshold, the airbag device is controlled to trigger the protection of the side of the occupant;

[0068] When the rollover angle of the vehicle exceeds an angle threshold, a detection result of the occupant detection device is obtained.

[0069] Optionally, the control method further includes:

[0070] Determine whether the seat sitting state meets the preset state;

[0071] When the seating state of the seat meets a preset state, the airbag device is triggered to protect the side of the occupant and / or the head of the occupant.

[0072] Optionally, the control method further includes:

[0073] Determine whether the current risk factor of the vehicle exceeds the risk threshold;

[0074] When the current risk factor of the vehicle exceeds a risk threshold, triggering a seat belt pretensioning module according to the seat's seating status; and / or

[0075] Determine whether the collision intensity of the vehicle exceeds an intensity threshold;

[0076] When the collision intensity of the vehicle exceeds the intensity threshold, the seat belt pretensioning module is triggered according to the seat occupancy status.

[0077] According to a third aspect of the present application, a vehicle is also provided, comprising the vehicle safety system as described above.

[0078] The beneficial effects of the present application are: providing a vehicle safety system, a control method and a vehicle that effectively and accurately trigger an airbag device to protect the occupant's head based on the occupant's head space conditions.

[0079] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0080] By providing an occupant detection device to detect the occupant's head space and triggering the airbag device to protect the occupant's head when the occupant's head space meets preset conditions, the airbag device can be effectively and accurately triggered, reducing injuries to the occupant, thereby improving the safety of the airbag device triggering.

[0081] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0083] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0084] Figure 1 is a principle block diagram of a vehicle safety system provided in an exemplary embodiment of the present application;

[0085] Figure 2 is a schematic structural diagram of an airbag device in a retracted state provided in an exemplary embodiment of the present application;

[0086] Figure 3 is an internal schematic diagram of an airbag device provided in an exemplary embodiment of the present application in a deployed state;

[0087] Figure 4 is a schematic installation diagram of an airbag device in an expanded state provided in an exemplary embodiment of the present application;

[0088] Figure 5 is a flow chart of the main steps of the control method provided in the exemplary embodiment of the present application;

[0089] Figure 6 is a flowchart of specific steps of a control method provided in an exemplary embodiment of the present application;

[0090] Figure 7 It is a schematic diagram of the overall structure of a vehicle provided in an exemplary embodiment of the present application.

[0091] Description of reference numerals:

[0092] 100. Vehicle safety system;

[0093] 110. controller; 121. occupant detection device;

[0094] 122. Posture detection device; 123. Collision detection device; 124. Seat detection device;

[0095] 125. Seat belt pre-tensioning module; 126. Risk detection module;

[0096] 130, airbag device; 130c, gas channel;

[0097] 130a, side airbag module; 131, side air curtain; 131a, first air inlet;

[0098] 130b, head airbag module; 132, head protection airbag; 132a, second air inlet;

[0099] 133, first type detonator; 133a, first level detonation unit; 133b, second level detonation unit;

[0100] 134. Second type of detonator; 135. First pull strap;

[0101] 136. The third type of detonator;

[0102] 137, second drawstring;

[0103] 138. Hinge;

[0104] 10. Vehicles;

[0105] 201. Seat; 202. Roof. DETAILED DESCRIPTION

[0106] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0107] According to the first aspect of the present application, referring to Figure 1 and Figure 4 The present application provides a vehicle safety system 100 , including: an airbag device 130 , an occupant detection device 121 and a controller 110 .

[0108] The airbag device 130 is at least used to protect the occupant's head; the occupant detection device 121 is used to detect the occupant's head space; the controller 110 is used to trigger the airbag device 130 to protect the occupant's head when the occupant's head space meets preset conditions.

[0109] It can be understood that the airbag device 130 is rapidly inflated and deployed when triggered to reduce the impact force on the occupants. Based on the working principle of the airbag, its inflation and deployment have certain space requirements. The head space can be understood as the distance from the occupant's head to the vehicle roof, or the distance between the occupant's head and the installation position of the airbag device 130, etc.; accordingly, the occupant's head space meeting the preset conditions can be understood as: the distance from the occupant's head to the vehicle roof is a suitable distance, or the occupant's head and the installation position of the airbag device 130 are a suitable distance, so as to meet the space requirements for airbag deployment and reduce the damage to the occupants when the airbag is deployed.

[0110] The controller 110 may be an ECU (Electronic Control Unit) of the vehicle.

[0111] Through the above technical solution, by setting up the occupant detection device 121 to detect the occupant's head space, and triggering the airbag device 130 to protect the occupant's head when the occupant's head space meets the preset conditions, the airbag device 130 is effectively and accurately triggered, reducing the damage to the occupant, thereby improving the safety of the triggering of the airbag device 130.

[0112] As an optional solution, the occupant detection device 121 includes at least a radar sensor and / or an image sensor. That is, the occupant detection device 121 uses at least one of a radar sensor and an image sensor to detect the head space of the occupant. The radar sensor may be a millimeter wave sensor, an ultrasonic sensor, or a laser radar installed on the roof of the vehicle. The image sensor may be a camera installed inside the vehicle, combined with a visual algorithm to detect the position of the occupant's head.

[0113] In some embodiments, reference Figure 1 The vehicle safety system 100 includes: a posture detection device 122 .

[0114] The posture detection device 122 is at least used to detect the rollover angle of the vehicle. When the third preset trigger condition is met, the controller triggers the airbag device to protect the occupant's head.

[0115] The third preset trigger condition includes: the head space of the occupant meets the preset condition and the rollover angle of the vehicle exceeds the angle threshold.

[0116] That is, when the rollover angle of the vehicle exceeds the angle threshold and the head space of the occupant meets the preset conditions, the controller 110 triggers the airbag device 130 to protect the occupant's head.

[0117] It can be understood that the roll angle of the vehicle indicates the degree of inclination of the vehicle during a roll or tumbling motion; accordingly, the angle threshold is the maximum rollover angle of the vehicle at which the occupants will not collide with the hard interior of the vehicle roof, and the angle threshold can be selected according to the actual design requirements of the vehicle.

[0118] Exemplarily, the posture detection device 122 may be a gyroscope sensor.

[0119] It should be noted that the vehicle rollover in the present application may be caused by a vehicle collision, or by vehicle control factors (such as excessive speed, oversteering, etc.), environmental factors (such as slippery road surface, steep slope, etc.), etc.

[0120] With this solution, the airbag device 130 is triggered by combining the rollover angle and the head space. When the vehicle does not roll over, the protection of the occupant's head will not be triggered, preventing the airbag from accidentally exploding and causing harm to the occupant. At the same time, when the vehicle's rollover angle exceeds the angle threshold and the occupant's head space meets the preset conditions, the airbag device 130 is triggered to protect the occupant's head, so that the airbag device 130 is deployed effectively and accurately, reducing the head and neck injuries of the occupant caused by the vehicle rolling over.

[0121] In some embodiments, reference Figure 1 The vehicle safety system 100 includes: a collision detection device 123 .

[0122] The collision detection device 123 is used to detect the collision intensity of the vehicle. When the fourth preset trigger condition is met, the controller 110 triggers the airbag device 130 to protect the occupant's head.

[0123] The fourth preset trigger condition includes: the head space of the occupant meets the preset condition and the collision intensity of the vehicle exceeds the intensity threshold.

[0124] That is, when the collision intensity of the vehicle exceeds the intensity threshold and the head space of the occupant meets the preset conditions, the controller 110 triggers the airbag device 130 to protect the occupant's head.

[0125] It can be understood that the collision direction detected by the collision detection device 123 of the present application can be the side, front and rear sides or top of the vehicle. The intensity threshold can be selected according to the actual design requirements of the vehicle.

[0126] Exemplarily, the collision detection device 123 may be a collision sensor. The collision sensor for collecting the vehicle side acceleration signal is installed at the lower end of the inner plate of the vehicle center pillar (B pillar).

[0127] It should be noted that not all collisions need to trigger the airbag device 130 to protect the occupant's head, such as front and rear side collisions. In other working conditions, collisions on the top of the vehicle (such as heavy pressure conditions) can trigger the protection of the occupant's head to prevent the vehicle roof from directly hitting the occupant's head.

[0128] With this solution, when the collision intensity of the vehicle exceeds the intensity threshold and the occupant's head space meets the preset conditions, the airbag device 130 is triggered to protect the occupant's head, thereby protecting the occupant and preventing the airbag from accidentally deploying and causing harm to the occupant.

[0129] Taking into account that some collision conditions may originate from the front, rear, left and right sides of the vehicle, these collisions do not need to trigger occupant head protection if they do not cause the vehicle to roll over.

[0130] In some embodiments, the first preset trigger condition includes: the head space of the occupant meets the preset condition, the rollover angle of the vehicle exceeds the angle threshold, and the collision intensity of the vehicle exceeds the intensity threshold.

[0131] That is, when the collision intensity of the vehicle exceeds the intensity threshold, the rollover angle of the vehicle exceeds the angle threshold, and the head space of the occupant meets the preset conditions, the controller 110 triggers the airbag device 130 to protect the occupant's head.

[0132] By adopting such a scheme, the airbag device 130 is triggered to protect the occupant's head by combining the collision intensity of the vehicle, the rolling angle of the vehicle and the head space of the occupant, so that the airbag device 130 can be deployed effectively and accurately, thereby protecting the occupant and avoiding injury to the occupant due to accidental deployment of the airbag.

[0133] In some embodiments, reference Figure 1 The vehicle safety system 100 includes: a seat detection device 124 .

[0134] The seat detection device 124 is used to detect the seating state of the seat 201 ; when a first preset trigger condition is met, the controller 110 triggers the airbag device 130 to protect the occupant's head.

[0135] The first preset trigger condition includes: the head space of the occupant meets the preset condition, the sitting state of the seat meets the preset state, and the collision intensity of the vehicle exceeds the intensity threshold and / or the rollover angle of the vehicle exceeds the angle threshold.

[0136] It can be understood that detecting the sitting state of the seat 201 may be detecting whether there is an occupant in the seat 201, and accordingly, the preset state is that there is an occupant in the seat 201. The seat detection device 124 may be a pressure sensor, an infrared sensor, a camera, or the like.

[0137] It should be noted that the seat detection device 124 not only detects the sitting state of the seat 201 on the collision side, but also detects the sitting state of the seat 201 on the non-collision side, thereby triggering the airbag device 130 to provide protection for the occupants on both the collision side and the non-collision side.

[0138] Exemplarily, when the seating state of seat 201 satisfies a preset state, the collision intensity of the vehicle exceeds an intensity threshold, the rollover angle of the vehicle exceeds an angle threshold, and the occupant's head space meets preset conditions, the controller 110 triggers the airbag device 130 to protect the occupant's head.

[0139] By adopting such a scheme, the seating status of the seat 201 is detected and the airbag device 130 corresponding to the seat 201 where the occupant is located is triggered only when there is an occupant in the seat 201, thereby achieving accurate triggering of the airbag device 130, avoiding replacement of all the airbag devices 130 of the entire vehicle during maintenance, and reducing maintenance costs.

[0140] In some embodiments, the airbag device 130 includes: a side airbag module 130a and a head airbag module 130b. The side airbag module 130a is used to protect the side of the occupant; the head airbag module 130b is used to protect the head of the occupant.

[0141] When the head space of the occupant meets the preset conditions, the controller 110 triggers the head airbag module to protect the occupant's head.

[0142] It is understood that the airbag module of the present application refers to a single airbag or a combination of multiple airbags that achieve the same function (such as side protection, top side protection, etc.). The side airbag module 130a can be independently fixed to the vehicle, or the side airbag module 130a and the head airbag module 130b are integrated to reduce the overall layout space of the airbag device 130 and improve the convenience of installation.

[0143] For example, refer to Figures 2 to 4The side airbag module 130a includes a side air curtain 131, and the head airbag module 130b includes a head protection airbag 132. The side air curtain 131 and the head protection airbag 132 are arranged on both sides of the vehicle roof through a fixed structure (such as a plurality of hinges 138) after being rolled up to prevent the airbag device 130 from falling off. The airbag device 130 is arranged between the side vehicle body roof and the vehicle body roof interior, wherein the side air curtain 131 covers the length from the first row to the last row of the vehicle, and a weakening line is arranged on the vehicle body roof interior to facilitate the deployment of the head protection airbag 132. When the side air curtain 131 is triggered, the side air curtain 131 is quickly deployed along the side of the vehicle window to protect the shoulder, neck and side of the occupant, and reduce the injury to the occupant from the side; when the head protection airbag 132 is triggered, the head protection airbag 132 is deployed along the roof 202 obliquely upward from the top of the occupant's head, and then covers the roof 202, effectively protecting the occupant's head and neck. It should be noted that the above structures of the side airbag module 130a and the head airbag module 130b are provided as an example of the present application and do not constitute a limitation to the present application.

[0144] With such a solution, the side airbag module 130a and the head airbag module 130b can work independently to protect different parts of the occupant's body, thereby achieving precise protection for the occupant. In addition, the head airbag module 130b is triggered when the occupant's head space meets the preset conditions, thereby avoiding the occupant from being injured during the deployment process due to the head airbag module 130b being triggered by mistake, and avoiding the redundancy of the protective effect caused by the simultaneous triggering of all airbag modules, thereby reducing the subsequent replacement and maintenance costs.

[0145] In some embodiments, when a first preset trigger condition is met, the controller 110 triggers the head airbag module to protect the occupant's head.

[0146] In this embodiment, the first preset trigger condition includes: the occupant's head space meets the preset condition, the seat's sitting state meets the preset state, and the vehicle's collision intensity exceeds the intensity threshold and / or the vehicle's rollover angle exceeds the angle threshold.

[0147] By adopting such a scheme, when the first preset trigger condition is met, the head airbag module is triggered to protect the occupant's head, so that the head airbag module is effectively and accurately deployed, thereby protecting the occupant while avoiding injury to the occupant caused by accidental deployment of the head airbag module.

[0148] In some embodiments, when the seating state of the seat meets a preset state and the collision intensity of the vehicle exceeds an intensity threshold, the controller triggers the side airbag module to protect the side of the occupant.

[0149] By adopting such a scheme, when the seating state of the seat meets the preset state and the collision intensity of the vehicle exceeds the intensity threshold, the side airbag module corresponding to seat 201 where the occupant is located will be triggered only when there is an occupant in seat 201, thereby achieving precise triggering of the side airbag module, avoiding replacement of all the side airbag modules of the entire vehicle during maintenance, and reducing maintenance costs.

[0150] In some embodiments, reference Figures 1 to 4 The vehicle safety system 100 includes: a first type detonator 133 .

[0151] The first type of initiator 133 is used to control the deployment of the side airbag module 130 a and / or the head airbag module 130 b .

[0152] It can be understood that the first type of initiator 133 can realize the deployment control of at least one of the side airbag module 130a and the head airbag module 130b.

[0153] In some embodiments, the controller 110 triggers the first type of initiator 133 when the collision intensity of the vehicle 10 exceeds an intensity threshold.

[0154] Exemplarily, when a side collision occurs, the collision detection device 123 sends a collision signal to the controller 110, and the controller 110 determines whether the collision intensity reaches the intensity threshold. If the collision intensity reaches the intensity threshold, a detonation signal is sent to the graded detonator; if the collision intensity does not reach the intensity threshold, no detonation signal is sent.

[0155] In some embodiments, when the seating state of the seat 201 satisfies a preset state and the collision intensity of the vehicle exceeds an intensity threshold, the controller 110 triggers the first type detonator 133 .

[0156] By adopting such a solution, when a collision exceeding a threshold intensity is detected in the vehicle, only the first detonator corresponding to the seat 201 where an occupant is present is triggered, thereby effectively and accurately controlling the deployment of the airbag device 130 .

[0157] In some embodiments, the first type of initiator 133 may be a staged initiator to achieve staged deployment of the side airbag module 130a and the head airbag module 130b, thereby achieving precise control over the side airbag module 130a and the head airbag module 130b.

[0158] In some embodiments, reference Figure 1 The first type of detonator 133 includes: a primary detonation unit 133a.

[0159] The primary detonation unit 133a is connected to the side airbag module 130a. The principle of the primary detonation unit 133a controlling the deployment of the side airbag module 130a adopts the existing technology, and the specific principle is not repeated. When the sitting state of the seat 201 meets the preset state and / or the collision intensity of the vehicle exceeds the intensity threshold, and the head space of the occupant does not meet the preset conditions, the controller 110 only triggers the primary detonation unit to control the deployment of the side airbag module.

[0160] Exemplarily, the primary detonation unit 133a is connected to the side air curtain 131 and is only used to control the deployment of the side air curtain 131; when the head space of the occupant does not meet the preset conditions and a collision exceeding the intensity threshold occurs, the controller 110 only triggers the primary detonation unit 133a to control the deployment of the side air curtain 131 to protect the side of the occupant. Based on the seating state of the seat 201, the controller 110 only triggers the deployment of the side air curtain 131 corresponding to the seat where the occupant is present.

[0161] By adopting such a solution, the side airbag module 130a can be precisely controlled, and while protecting the side of the occupant, the head airbag module 130b can be prevented from being accidentally deployed and causing harm to the occupant.

[0162] In some embodiments, reference Figure 1 The first type of detonator 133 includes a secondary detonator unit 133b. The secondary detonator unit 133b is connected to the head airbag module 130b and / or the side airbag module 130a.

[0163] It can be understood that the secondary detonation unit 133b can be directly connected to the head airbag module 130b to directly control the deployment of the head airbag module 130b; or, the secondary detonation unit 133b is also connected to the side airbag module 130a to control the deployment of the head airbag module 130b through the gas channel 130c between the side airbag module 130a and the head airbag module 130b.

[0164] When the first preset trigger condition is met, the controller 110 triggers the secondary detonation unit 133b to control the deployment of the head airbag module 130b.

[0165] In this embodiment, the first preset trigger condition includes: the head space of the occupant meets the preset condition, the seat sitting state meets the preset state, the rollover angle of the vehicle exceeds the angle threshold, and the collision intensity of the vehicle exceeds the intensity threshold. That is, when all the items in the first preset trigger condition are met, the controller 110 triggers the secondary detonation unit 133b to control the deployment of the head airbag module 130b.

[0166] With this solution, the second detonation unit controls the deployment of the head airbag module 130b, realizes independent control of the head airbag module 130b, and realizes precise control of the airbag device 130. Moreover, when the first preset trigger condition is met, the deployment of the head airbag module 130b corresponding to the position of the occupant is controlled to reduce the occupant's head injury, while realizing precise control of the airbag device 130.

[0167] In some embodiments, the airbag device 130 includes a gas channel 130c. The gas channel 130c is connected between the side airbag module 130a and the head airbag module 130b so that the side airbag module 130a and the head airbag module 130b can be triggered as a whole.

[0168] In some specific embodiments of the present application, refer to Figure 3 The side air curtain 131 has a first air inlet 131a, and the first-stage detonation unit 133a is connected to the first air inlet 131a, so that the side air curtain 131 is inflated through the first air inlet 131a when the first-stage detonation unit 133a is detonated, thereby controlling the deployment of the side air curtain 131.

[0169] The head protection airbag 132 has a second air inlet 132 a , and the secondary detonating unit 133 b is connected to the second air inlet 132 a , so that the head protection airbag 132 is inflated through the second air inlet 132 a when the secondary detonating unit 133 b is detonated, thereby controlling the deployment of the head protection airbag 132 .

[0170] In some other specific embodiments of the present application, a gas channel 130c is provided between the side air curtain 131 and the head protection airbag 132, and the secondary detonation unit 133b is also connected to the first air inlet 131a. On the one hand, the secondary detonation unit 133b can directly inflate the head protection airbag 132 through the second air inlet 132a, and on the other hand, inflate the head protection airbag 132 through the first air inlet 131a, the side air curtain 131 and the gas channel 130c, thereby improving the deployment efficiency of the head protection airbag 132. At the same time, the setting of the gas channel 130c realizes the connection between the side air curtain 131 and the head protection airbag 132, which can provide a buffering effect.

[0171] In some embodiments, reference Figures 2 to 4 The airbag device 130 includes: a first pull strap 135 and a second type detonator 134 .

[0172] The first drawstring 135 is used to control the communication of the gas channel 130c between the side airbag module 130a and the head airbag module 130b; the second type of detonator 134 is connected to the first drawstring 135. When the first preset trigger condition is met, the controller 110 triggers the second type of detonator 134 to control the action of the first drawstring to connect the gas channel 130c between the side airbag module 130a and the head airbag module 130b.

[0173] Exemplarily, the gas channel 130c between the side air curtain 131 and the head protection airbag 132 is in a closed state when the head protection airbag 132 is not deployed; one end of the first pull strap 135 is connected to the outer side wall of the gas channel 130c, and the other end is connected to the second type of detonator 134. The second type of detonator 134 is integrated with the first type of detonator 133. The second type of detonator 134 is a micro detonator, which provides tension to the first pull strap 135 when detonating, so as to open the closed gas channel 130c through the first pull strap 135, so as to realize the connection between the side air curtain 131 and the head protection airbag 132.

[0174] With such a solution, by providing the first pull strap 135 and the second type detonator 134 , airflow can enter the head airbag module 130b through the gas channel 130c, so that the head airbag module 130b can be quickly deployed.

[0175] In some embodiments, the airbag device 130 further includes a second drawstring 137. The second drawstring 137 is used to adjust the deployment posture of the side airbag module 130a so that the side airbag module 130a can effectively protect the side of the occupant.

[0176] For example, refer to Figures 2 to 4 The second pull strap 137 is connected between the end of the side air curtain 131 and the side of the vehicle.

[0177] In some embodiments, reference Figure 1 and Figure 2 The airbag device 130 includes: a third type of initiator 136 .

[0178] The third type of initiator 136 is used to control the deployment of the head airbag module 130 b ; when the first preset trigger condition is met, the controller 110 triggers the third type of initiator 136 .

[0179] Exemplarily, the third type detonator 136 is arranged at a different position from the first type detonator 133. The side air curtain 131 has a plurality of first air inlets 131a arranged in the direction of the side air curtain 131 covering the length, at least one first air inlet 131a is connected to the primary detonator unit 133a, and the remaining first air inlets 131a are connected to the third type detonator 136. The third type detonator 136 can also be directly connected to the head protection airbag 132.

[0180] By adopting such a solution and providing the third type detonator 136 , the deployment speed of the second type airbag module is increased, thereby reducing the injuries to the occupants.

[0181] In some embodiments, reference Figure 1 The vehicle safety system 100 further includes: a seat belt pre-tensioning module 125 and a risk detection module 126 .

[0182] The seat belt pre-tensioning module 125 is used to provide pre-tensioning force to the seat belt; the seat belt pre-tensioning module 125 uses existing technology to provide pre-tensioning force to the seat belt, and the details are not repeated. The risk detection module 126 is used to obtain the current risk coefficient of the vehicle. When the second preset trigger condition is met, the controller 110 triggers the seat belt pre-tensioning module.

[0183] The second preset trigger condition includes: the seating state of the seat meets the preset state, and the current risk coefficient of the vehicle exceeds the risk threshold and / or the collision intensity of the vehicle exceeds the intensity threshold.

[0184] It is understood that the risk detection module 126 can obtain the current risk coefficient of the vehicle based on the vehicle's environmental obstacle information, vehicle speed and acceleration, etc. The specific calculation method adopts the existing technology and will not be described in detail. The risk threshold can be selected according to the actual design requirements of the vehicle.

[0185] In some specific embodiments of the present application, the second preset trigger condition includes: the seating state of the seat satisfies a preset state and the current risk coefficient of the vehicle exceeds a risk threshold.

[0186] That is, when the current risk factor of the vehicle exceeds the risk threshold, the controller 110 only triggers the seat belt pre-tensioning module 125 corresponding to the seat 201 where the occupant is present. With this solution, when a collision risk is detected, the controller 110 triggers the seat belt pre-tensioning module 125, so that the seat belt is pre-tightened in advance to reduce the displacement of the occupant.

[0187] In some other specific embodiments of the present application, the second preset trigger condition includes: the seating state of the seat meets the preset state and the collision intensity of the vehicle exceeds the intensity threshold.

[0188] That is, when the collision intensity of the vehicle exceeds the intensity threshold, the controller 110 only triggers the seat belt pretensioning module 125 corresponding to the seat 201 where the occupant is present. With such a solution, when the collision intensity of the vehicle exceeds the intensity threshold, the controller 110 triggers the seat belt pretensioning module 125, so that the seat belt is pretensioned to reduce the damage to the passenger.

[0189] In some other specific embodiments of the present application, the second preset trigger condition includes: the seat sitting state meets the preset state, the current risk factor of the vehicle exceeds the risk threshold, and the collision intensity of the vehicle exceeds the intensity threshold. With such a solution, in the case of multiple collisions, the controller 110 triggers the seat belt pretensioning module 125 to reduce the damage to the passengers.

[0190] According to a second aspect of the present application, a control method for a vehicle safety system is provided, referring to Figure 5 , the control method includes the following main steps:

[0191] S110: Obtaining a detection result of an occupant detection device;

[0192] S120: According to the detection result of the occupant detection device, when the head space of the occupant meets the preset conditions, the airbag device is controlled to trigger the protection of the occupant's head.

[0193] Through the above technical solution, by controlling the airbag device to trigger the protection of the occupant's head when the occupant's head space meets the preset conditions, the airbag device can be effectively and accurately triggered, reducing the damage to the occupant, thereby improving the safety of the airbag device triggering.

[0194] In some embodiments, before step S120, the control method further includes the following steps:

[0195] S101: Determine whether the collision intensity of the vehicle exceeds an intensity threshold;

[0196] S102: When the collision intensity of the vehicle exceeds the intensity threshold, obtaining the rollover angle of the vehicle;

[0197] S103: Determine whether the rollover angle of the vehicle exceeds an angle threshold;

[0198] S104: When the rollover angle of the vehicle does not exceed the angle threshold, controlling the airbag device to trigger protection for the side of the occupant;

[0199] S105: When the rollover angle of the vehicle exceeds an angle threshold, obtaining a detection result of the occupant detection device.

[0200] With this solution, when the collision intensity exceeds the intensity threshold and the vehicle's rollover angle does not exceed the angle threshold, the airbag device is controlled to trigger the protection of the occupant's side (that is, the deployment of the side airbag). When the collision intensity exceeds the intensity threshold and the vehicle's rollover angle does not exceed the angle threshold, the detection result of the occupant detection device is further obtained to determine whether to trigger the protection of the occupant's head (that is, the deployment of the head airbag module). In this way, while protecting the occupant, the airbag device is prevented from being deployed by mistake and causing harm to the occupant, and the maintenance and replacement costs of the airbag device can be reduced through the precise triggering of the airbag device.

[0201] In some embodiments, the control method comprises the following steps:

[0202] S100a: Determine whether the seat sitting state meets the preset state;

[0203] S100b: When the seat seating state satisfies a preset state, the airbag device is triggered to protect the side of the occupant and / or the head of the occupant.

[0204] By adopting such a scheme, by detecting the seating state of the seat, the corresponding airbag device can be triggered according to the position of the seat where the occupant is present, thereby improving the accuracy of triggering the airbag device and reducing the cost of subsequent replacement or repair of the airbag.

[0205] In some embodiments, the control method further comprises the following steps:

[0206] S11: Determine whether the current risk factor of the vehicle exceeds the risk threshold;

[0207] S12: When the current risk factor of the vehicle exceeds the risk threshold, the seat belt pretensioning module is triggered according to the seating status of the seat.

[0208] With this solution, when a collision risk is detected, the seat belt pretensioning module is triggered to pretension the seat belt in advance, thereby reducing the displacement of the occupant.

[0209] In some embodiments, the control method further comprises the following steps:

[0210] S21: Determine whether the collision intensity of the vehicle exceeds an intensity threshold;

[0211] S22: When the collision intensity of the vehicle exceeds the intensity threshold, the seat belt pretensioning module is triggered according to the seat occupancy status.

[0212] With this solution, when the collision intensity of the vehicle exceeds the intensity threshold, the seat belt pretensioning module is triggered to pretension the seat belt, thereby reducing the damage to the passengers from the side.

[0213] The control method of the vehicle safety system provided in the embodiment of the present application is introduced and explained below with an example.

[0214] Reference Figure 6 A control method for a vehicle safety system provided in an embodiment of the present application includes the following steps:

[0215] St101: The seat detection device continuously monitors whether there is an occupant in the seat position;

[0216] St102: When the current risk factor of the vehicle exceeds the risk threshold, the seat belt pretensioning module is triggered to pretension the seat belt in advance;

[0217] St103: When the collision intensity of the vehicle exceeds the intensity threshold, the primary detonation unit is triggered to deploy the side airbag module to protect the side of the occupant;

[0218] St104: when the rollover angle of the vehicle exceeds the angle threshold, obtaining the detection result of the occupant detection device;

[0219] St105: When the occupant's head space meets the preset conditions, the secondary detonator and the third type detonator are triggered to deploy the head airbag module to protect the occupant's head. At the same time, the second type detonator is triggered to allow the first pull strap to open the closed gas channel.

[0220] According to the third aspect of the present application, referring to Figure 7 , a vehicle 10 is provided, which includes the above-mentioned vehicle safety system. The vehicle 10 has all the beneficial effects of the above-mentioned vehicle safety system, which will not be repeated in this application.

[0221] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0222] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0223] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0224] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0225] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A vehicle safety system, characterized in that: include: An air bag device, at least for protecting the occupant's head; An occupant detection device, used to detect the headroom of an occupant; A controller, used to trigger the airbag device to protect the occupant's head when the occupant's head space meets a preset condition; Wherein, the airbag device comprises: Head airbag module, used to protect the occupant's head; Side airbag modules, used to protect the occupants’ sides; a first drawstring, used to control the communication of the gas passage between the side airbag module and the head airbag module; A second type of detonator connected to the first draw strap; Wherein, when a first preset trigger condition is met, the controller triggers the second type of detonator to control the action of the first pull strap to connect the gas channel between the side airbag module and the head airbag module; The first preset trigger condition includes: The headroom of the occupants meets the preset conditions; The seat's sitting state meets the preset state; The collision intensity of the vehicle exceeds an intensity threshold and / or the rollover angle of the vehicle exceeds an angle threshold.

2. The vehicle safety system according to claim 1, characterized in that: The vehicle safety system comprises: A posture detection device, at least used to detect the rollover angle of the vehicle; Wherein, when a third preset triggering condition is met, the controller triggers the airbag device to protect the occupant's head; The third preset trigger condition includes: The headroom of the occupants meets the preset conditions; The vehicle's rollover angle exceeds the angle threshold.

3. The vehicle safety system according to claim 1, characterized in that: The vehicle safety system comprises: A collision detection device, used to detect the collision intensity of the vehicle; Wherein, when a fourth preset triggering condition is met, the controller triggers the airbag device to protect the occupant's head; The fourth preset trigger condition includes: The headroom of the occupants meets the preset conditions; The collision intensity of the vehicle exceeds the intensity threshold.

4. The vehicle safety system according to claim 1, characterized in that: The vehicle safety system comprises: A seat detection device, used for detecting the seating status of the seat; A posture detection device, at least used to detect the rollover angle of the vehicle; A collision detection device, used to detect the collision intensity of the vehicle; Wherein, when a first preset triggering condition is met, the controller triggers the airbag device to protect the occupant's head; The first preset trigger condition includes: The headroom of the occupants meets the preset conditions; The seat's sitting state meets the preset state; The collision intensity of the vehicle exceeds an intensity threshold and / or the rollover angle of the vehicle exceeds an angle threshold.

5. The vehicle safety system according to any one of claims 1 to 4, characterized in that: The occupant detection device includes at least a radar sensor and / or an image sensor.

6. The vehicle safety system according to claim 4, characterized in that: When the head space of the occupant meets a preset condition, the controller triggers the head airbag module to protect the occupant's head.

7. The vehicle safety system according to claim 6, characterized in that: When a first preset triggering condition is met, the controller triggers the head airbag module to protect the occupant's head.

8. The vehicle safety system according to claim 7, characterized in that: When the seating state of the seat meets a preset state and the collision intensity of the vehicle exceeds an intensity threshold, the controller triggers the side airbag module to protect the side of the occupant.

9. The vehicle safety system according to claim 8, characterized in that: The airbag device comprises: The first type of initiator is used to control the deployment of the side airbag module and / or the head airbag module.

10. The vehicle safety system according to claim 9, characterized in that: The first type of detonator includes: a primary detonation unit connected to the side airbag module; Among them, when the seating state of the seat meets the preset state and / or the collision intensity of the vehicle exceeds the intensity threshold, and the occupant's head space does not meet the preset conditions, the controller only triggers the primary detonation unit to control the deployment of the side airbag module.

11. The vehicle safety system according to claim 9, characterized in that: The first type of detonator includes: a secondary detonation unit connected to the head airbag module and / or the side airbag module; Wherein, when a first preset trigger condition is met, the controller triggers the secondary detonation unit to control the deployment of the head airbag module.

12. The vehicle safety system according to claim 11, characterized in that: The airbag device comprises: A gas channel is connected between the side airbag module and the head airbag module so that the side airbag module and the head airbag module can be triggered as a whole.

13. The vehicle safety system according to claim 7, characterized in that: The airbag device comprises: A third type of initiator, used to control the deployment of the head airbag module; Wherein, when a first preset trigger condition is met, the controller triggers the third type detonator.

14. The vehicle safety system according to claim 4, characterized in that: The vehicle safety system further includes: A seat belt pretensioning module, used to provide pretensioning force to the seat belt; Risk detection module, used to obtain the current risk factor of the vehicle; Wherein, when a second preset trigger condition is met, the controller triggers the seat belt pretensioning module; The second preset trigger condition includes: The seat's sitting state meets the preset state; The current risk factor of the vehicle exceeds a risk threshold and / or the collision intensity of the vehicle exceeds an intensity threshold.

15. A method for controlling a vehicle safety system, characterized in that: The control method comprises: According to the detection result of the occupant detection device, when the head space of the occupant meets the preset conditions, the airbag device is controlled to trigger the protection of the occupant's head; The control method further comprises: When the first preset trigger condition is met, the second type of detonator is triggered to control the action of the first pull strap to connect the gas channel between the side airbag module and the head airbag module; The first preset trigger condition includes: The headroom of the occupants meets the preset conditions; The seat's sitting state meets the preset state; The collision intensity of the vehicle exceeds an intensity threshold and / or the rollover angle of the vehicle exceeds an angle threshold.

16. The control method of the vehicle safety system according to claim 15, characterized in that: Before controlling the airbag device to trigger the protection of the occupant's head, the control method further includes: Determine whether the collision intensity of the vehicle exceeds an intensity threshold; When the collision intensity of the vehicle exceeds the intensity threshold, the rollover angle of the vehicle is obtained; Determine whether the vehicle's rollover angle exceeds an angle threshold; When the rollover angle of the vehicle does not exceed the angle threshold, the airbag device is controlled to trigger the protection of the side of the occupant; When the rollover angle of the vehicle exceeds an angle threshold, a detection result of the occupant detection device is obtained.

17. The control method of the vehicle safety system according to claim 16, characterized in that: The control method further comprises: Determine whether the seat sitting state meets the preset state; When the seating state of the seat meets a preset state, the airbag device is triggered to protect the side of the occupant and / or the head of the occupant.

18. The control method of the vehicle safety system according to claim 17, characterized in that: The control method further comprises: Determine whether the current risk factor of the vehicle exceeds the risk threshold; When the current risk factor of the vehicle exceeds a risk threshold, triggering a seat belt pretensioning module according to the seat's seating status; and / or Determine whether the collision intensity of the vehicle exceeds an intensity threshold; When the collision intensity of the vehicle exceeds the intensity threshold, the seat belt pretensioning module is triggered according to the seat occupancy status.

19. A vehicle, characterized in that: The invention comprises a vehicle safety system as claimed in any one of claims 1 to 14.

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